├── .classpath
├── .gitignore
├── .project
├── .settings
    ├── .jsdtscope
    ├── org.eclipse.core.resources.prefs
    ├── org.eclipse.jdt.core.prefs
    ├── org.eclipse.wst.common.component
    ├── org.eclipse.wst.common.project.facet.core.xml
    ├── org.eclipse.wst.jsdt.ui.superType.container
    └── org.eclipse.wst.jsdt.ui.superType.name
├── LICENSE
├── README.md
├── WebContent
    ├── META-INF
    │   └── MANIFEST.MF
    ├── async
    │   └── asyncThread.jsp
    ├── component
    │   └── uploadfile
    │   │   └── upload.jsp
    ├── counter.jsp
    └── jspC.jsp
└── src
    └── org
        ├── component
            └── uploadfile
            │   └── UploadServlet.java
        ├── jsp
            └── Counter.java
        ├── servlet
            ├── HttpServletService.java
            ├── async
            │   ├── AsyncServlet.java
            │   └── AsyncThread.java
            ├── reqAndresp
            │   ├── HelloWorldServletT.java
            │   ├── LifeCircleServletT.java
            │   └── SuperServiceServletT.java
            └── sessionMngmt
            │   ├── HttpSessionByCookieServletT.java
            │   ├── HttpSessionMethodsServletT.java
            │   └── HttpSessionServletT.java
        └── tomcat
            └── jsp
                └── jasper
                    └── JspCompilerT.java


/.classpath:
--------------------------------------------------------------------------------
 1 | <?xml version="1.0" encoding="UTF-8"?>
 2 | <classpath>
 3 | 	<classpathentry kind="src" path="src"/>
 4 | 	<classpathentry kind="src" path="test"/>
 5 | 	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER">
 6 | 		<attributes>
 7 | 			<attribute name="owner.project.facets" value="java"/>
 8 | 		</attributes>
 9 | 	</classpathentry>
10 | 	<classpathentry kind="con" path="org.eclipse.jst.j2ee.internal.web.container"/>
11 | 	<classpathentry kind="con" path="org.eclipse.jst.j2ee.internal.module.container"/>
12 | 	<classpathentry kind="con" path="org.eclipse.jst.server.core.container/org.eclipse.jst.server.tomcat.runtimeTarget/Apache Tomcat v8.0"/>
13 | 	<classpathentry kind="con" path="org.eclipse.jdt.USER_LIBRARY/Ant"/>
14 | 	<classpathentry kind="output" path="build/classes"/>
15 | </classpath>
16 | 


--------------------------------------------------------------------------------
/.gitignore:
--------------------------------------------------------------------------------
 1 | *.class
 2 | 
 3 | # Mobile Tools for Java (J2ME)
 4 | .mtj.tmp/
 5 | 
 6 | # Package Files #
 7 | *.jar
 8 | *.war
 9 | *.ear
10 | 
11 | # virtual machine crash logs, see http://www.java.com/en/download/help/error_hotspot.xml
12 | hs_err_pid*
13 | 


--------------------------------------------------------------------------------
/.project:
--------------------------------------------------------------------------------
 1 | <?xml version="1.0" encoding="UTF-8"?>
 2 | <projectDescription>
 3 | 	<name>servlet-core-learning</name>
 4 | 	<comment></comment>
 5 | 	<projects>
 6 | 	</projects>
 7 | 	<buildSpec>
 8 | 		<buildCommand>
 9 | 			<name>org.eclipse.wst.jsdt.core.javascriptValidator</name>
10 | 			<arguments>
11 | 			</arguments>
12 | 		</buildCommand>
13 | 		<buildCommand>
14 | 			<name>org.eclipse.jdt.core.javabuilder</name>
15 | 			<arguments>
16 | 			</arguments>
17 | 		</buildCommand>
18 | 		<buildCommand>
19 | 			<name>org.eclipse.wst.common.project.facet.core.builder</name>
20 | 			<arguments>
21 | 			</arguments>
22 | 		</buildCommand>
23 | 		<buildCommand>
24 | 			<name>org.eclipse.wst.validation.validationbuilder</name>
25 | 			<arguments>
26 | 			</arguments>
27 | 		</buildCommand>
28 | 	</buildSpec>
29 | 	<natures>
30 | 		<nature>org.eclipse.jem.workbench.JavaEMFNature</nature>
31 | 		<nature>org.eclipse.wst.common.modulecore.ModuleCoreNature</nature>
32 | 		<nature>org.eclipse.wst.common.project.facet.core.nature</nature>
33 | 		<nature>org.eclipse.jdt.core.javanature</nature>
34 | 		<nature>org.eclipse.wst.jsdt.core.jsNature</nature>
35 | 	</natures>
36 | </projectDescription>
37 | 


--------------------------------------------------------------------------------
/.settings/.jsdtscope:
--------------------------------------------------------------------------------
 1 | <?xml version="1.0" encoding="UTF-8"?>
 2 | <classpath>
 3 | 	<classpathentry kind="src" path="WebContent"/>
 4 | 	<classpathentry kind="con" path="org.eclipse.wst.jsdt.launching.JRE_CONTAINER"/>
 5 | 	<classpathentry kind="con" path="org.eclipse.wst.jsdt.launching.WebProject">
 6 | 		<attributes>
 7 | 			<attribute name="hide" value="true"/>
 8 | 		</attributes>
 9 | 	</classpathentry>
10 | 	<classpathentry kind="con" path="org.eclipse.wst.jsdt.launching.baseBrowserLibrary"/>
11 | 	<classpathentry kind="output" path=""/>
12 | </classpath>
13 | 


--------------------------------------------------------------------------------
/.settings/org.eclipse.core.resources.prefs:
--------------------------------------------------------------------------------
1 | eclipse.preferences.version=1
2 | encoding//WebContent/jspC.jsp=UTF-8
3 | encoding/<project>=UTF-8
4 | 


--------------------------------------------------------------------------------
/.settings/org.eclipse.jdt.core.prefs:
--------------------------------------------------------------------------------
1 | eclipse.preferences.version=1
2 | org.eclipse.jdt.core.compiler.codegen.inlineJsrBytecode=enabled
3 | org.eclipse.jdt.core.compiler.codegen.targetPlatform=1.7
4 | org.eclipse.jdt.core.compiler.compliance=1.7
5 | org.eclipse.jdt.core.compiler.problem.assertIdentifier=error
6 | org.eclipse.jdt.core.compiler.problem.enumIdentifier=error
7 | org.eclipse.jdt.core.compiler.source=1.7
8 | 


--------------------------------------------------------------------------------
/.settings/org.eclipse.wst.common.component:
--------------------------------------------------------------------------------
 1 | <?xml version="1.0" encoding="UTF-8"?><project-modules id="moduleCoreId" project-version="1.5.0">
 2 |     <wb-module deploy-name="servlet-core-learning">
 3 |         <wb-resource deploy-path="/" source-path="/WebContent" tag="defaultRootSource"/>
 4 |         <wb-resource deploy-path="/WEB-INF/classes" source-path="/src"/>
 5 |         <wb-resource deploy-path="/WEB-INF/classes" source-path="/test"/>
 6 |         <property name="context-root" value="servlet-core-learning"/>
 7 |         <property name="java-output-path" value="/servlet-core-learning/build/classes"/>
 8 |     </wb-module>
 9 | </project-modules>
10 | 


--------------------------------------------------------------------------------
/.settings/org.eclipse.wst.common.project.facet.core.xml:
--------------------------------------------------------------------------------
 1 | <?xml version="1.0" encoding="UTF-8"?>
 2 | <faceted-project>
 3 |   <fixed facet="wst.jsdt.web"/>
 4 |   <fixed facet="java"/>
 5 |   <fixed facet="jst.web"/>
 6 |   <installed facet="java" version="1.7"/>
 7 |   <installed facet="jst.web" version="3.0"/>
 8 |   <installed facet="wst.jsdt.web" version="1.0"/>
 9 | </faceted-project>
10 | 


--------------------------------------------------------------------------------
/.settings/org.eclipse.wst.jsdt.ui.superType.container:
--------------------------------------------------------------------------------
1 | org.eclipse.wst.jsdt.launching.baseBrowserLibrary


--------------------------------------------------------------------------------
/.settings/org.eclipse.wst.jsdt.ui.superType.name:
--------------------------------------------------------------------------------
1 | Window


--------------------------------------------------------------------------------
/LICENSE:
--------------------------------------------------------------------------------
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--------------------------------------------------------------------------------
/README.md:
--------------------------------------------------------------------------------
 1 | # servlet-core-learning
 2 | Servlet/JSP学习积累的例子，是Java EE初学者及Servlet/JSP核心技术巩固的最佳实践。<br>
 3 | 补充：还有Tomcat容器相关
 4 | 
 5 | ## 作者与学习乐园
 6 | 源码地址:我的[GitHub地址](https://github.com/JeffLi1993 "GitHub")<br>
 7 | 作者： [李强强](http://www.bysocket.com/ "李强强")<br>
 8 | QQ群：编程之美 365234583 [立即加入](http://jq.qq.com/?_wv=1027&k=Sx4s4U "编程之美")
 9 | 
10 | ## 项目结构
11 | - src 目录<br>
12 | Servlet/JSP核心技术学习代码兼测试案例<br>
13 | - test目录(测试包名与src目录保持一致)<br>
14 | 对应学习代码包的详细测试案例<br>
15 | 
16 | 包目录：
17 | 
18 | 	├── 插件
19 | 	├── org.component					// 插件相关
20 | 	├── Servlet JSP
21 | 	├── org.jsp						// jsp相关
22 | 	├── org.servlet					// Servlet相关
23 | 	├── org.servlet.async				// 异步调用
24 | 	├── org.servlet.reqAndresp		// 请求与响应
25 | 	├── org.servlet.sessionMngmt		// 会话管理
26 | 	├── Tomcat 
27 | 	├── org.tomcat					// tomcat相关
28 | 	│
29 | 	拼命更新！顶！d=====(￣▽￣*)b
30 | 
31 | 插件相关详细目录：
32 | 
33 | 	├── README.md						// 项目唯一详细文档
34 | 	├── org.component					// 插件相关
35 | 	├── org.component.uploadfile		// 插件-文件上传下载
36 | 	├── 	UploadServlet.java				// 	文件上传类
37 | 	拼命更新！顶！d=====(￣▽￣*)b
38 | 
39 | Servlet/Jsp相关详细目录：
40 | 
41 | 	├── README.md								// 项目唯一详细文档
42 | 	├── org.jsp							// jsp相关
43 | 	├── 	Counter.java						// 	page指令之计数器累加器
44 | 	├── org.servlet						// Servlet相关
45 | 	├── 	HttpServletService.java				// 	HttpServlet的service方法实现
46 | 	├── org.servlet.async					// 异步调用
47 | 	├── 	AsyncServlet.java					// 	Servlet3.0提供的异步处理案例
48 | 	├── 	AsyncThread.java					// 	Servlet3.0提供的异步处理案例
49 | 	├── org.servlet.reqAndresp			// 请求与响应
50 | 	├── 	HelloWorldServletT.java				// 	HelloWrold案例
51 | 	├── 	LifeCircleServletT.java				// 	Servlet生命周期演示案例
52 | 	├── 	SuperServiceServletT.java			// 	super.service测试案例
53 | 	├── org.servlet.sessionMngmt			// 会话管理
54 | 	├── 	HttpSessionByCookieServletT.java	// HttpSession的默认Cookie实现案例
55 | 	├── 	HttpSessionMethodsServletT.java		// HttpSession的详细案例
56 | 	├── 	HttpSessionServletT.java			// HttpSession简单案例
57 | 	拼命更新！顶！d=====(￣▽￣*)b
58 | 
59 | Tomcat相关详细目录：
60 | 
61 | 	├── README.md							// 项目唯一详细文档
62 | 	├── org.tomcat.jsp.jasper				// Japser引擎
63 | 	├── 	JspCompilerT.java					// 	Jasper引擎编译JSP
64 | 	拼命更新！顶！d=====(￣▽￣*)b
65 | 
66 | WebContent相关详细目录：
67 | 
68 | 	├── README.md							// 项目唯一详细文档
69 | 	├── /component						// 插件相关
70 | 	├── /component/uploadfile				// 文件上传下载
71 | 	├── 	upload.jsp							// 文件上传JSP
72 | 	├── /async							// 异步调用
73 | 	├── 	asyncThread.jsp						// 异步调用JSP	
74 | 	├── counter.jsp							// page指令之计数器累加器显示JSP
75 | 	├── jspC.jsp								// 	Jasper引擎编译JSP所需的JSP
76 | 	拼命更新！顶！d=====(￣▽￣*)b
77 | 
78 | 


--------------------------------------------------------------------------------
/WebContent/META-INF/MANIFEST.MF:
--------------------------------------------------------------------------------
1 | Manifest-Version: 1.0
2 | Class-Path: 
3 | 
4 | 


--------------------------------------------------------------------------------
/WebContent/async/asyncThread.jsp:
--------------------------------------------------------------------------------
 1 | <%@ page language="java" contentType="text/html; charset=UTF-8"
 2 |     pageEncoding="UTF-8"%>
 3 | <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
 4 | <%@ page import="java.util.Date" %>
 5 | <html>
 6 | <head>
 7 | <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
 8 | <title>异步调用界面</title>
 9 | </head>
10 | <body>
11 | 	<h1>
12 | 		Hello,${name}
13 | 	</h1>
14 | 	异步业务开始时间 --- ${startDate} <br>
15 | 	异步业务结束时间 --- ${endDate}
16 | </body>
17 | </html>


--------------------------------------------------------------------------------
/WebContent/component/uploadfile/upload.jsp:
--------------------------------------------------------------------------------
 1 | <%@ page language="java" contentType="text/html; charset=UTF-8"
 2 |     pageEncoding="UTF-8"%>
 3 | <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" 
 4 | 	"http://www.w3.org/TR/html4/loose.dtd">
 5 | <html>
 6 | 	<head>
 7 | 		<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
 8 | 		<title>上传文件</title>
 9 | 	</head>
10 | 	<body>
11 | 		<h2>文件上传</h2>
12 | 		<!-- action 指向 UploadServlet.java -->
13 | 		<form action="/servlet-core-learning/upload3.html" method="post" 
14 | 				enctype="multipart/form-data">
15 | 			请选择文件路径：
16 | 			<input type="file" name="myfile"/><br>
17 | 			<input type="submit" value="点击上传">
18 | 		</form>
19 | 	</body>
20 | </html>


--------------------------------------------------------------------------------
/WebContent/counter.jsp:
--------------------------------------------------------------------------------
 1 | <%@ page language="java" contentType="text/html; charset=UTF-8"
 2 |     pageEncoding="UTF-8"%>
 3 | <%@page import="org.jsp.Counter" %> <!-- 利用page指令导入jar包或者类对象 -->
 4 | <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
 5 | <html>
 6 | <head>
 7 | <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
 8 | <title>Insert title here</title>
 9 | </head>
10 | <body>
11 | 	<H2>
12 | 		计数点 -> 
13 | 		<%= Counter.getCount() %> <!-- 表达式，会成为out.print()的参数，顾没分号 -->
14 | 		<!--等价于  <% out.println(Counter.getCount()); %> -->
15 | 	</H2>
16 | </body>
17 | </html>


--------------------------------------------------------------------------------
/WebContent/jspC.jsp:
--------------------------------------------------------------------------------
 1 | <%@ page language="java" contentType="text/html; charset=UTF-8"
 2 |     pageEncoding="ISO-8859-1"%>
 3 | <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
 4 | <html>
 5 | <head>
 6 | <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
 7 | <title>当前日期</title>
 8 | </head>
 9 | <body>
10 | 	当前的日期是：<%=new java.text.SimpleDateFormat("yyyy-MM-dd").format(new java.util.Date())%> 
11 | </body>
12 | </html>


--------------------------------------------------------------------------------
/src/org/component/uploadfile/UploadServlet.java:
--------------------------------------------------------------------------------
  1 | package org.component.uploadfile;
  2 | 
  3 | import java.io.File;
  4 | import java.io.FileOutputStream;
  5 | import java.io.IOException;
  6 | import java.io.InputStream;
  7 | import java.io.PrintWriter;
  8 | import java.io.RandomAccessFile;
  9 | 
 10 | import javax.servlet.ServletException;
 11 | import javax.servlet.annotation.WebServlet;
 12 | import javax.servlet.http.HttpServlet;
 13 | import javax.servlet.http.HttpServletRequest;
 14 | import javax.servlet.http.HttpServletResponse;
 15 | /*
 16 |  * Copyright [2015] [Jeff Lee]
 17 |  *
 18 |  * Licensed under the Apache License, Version 2.0 (the "License");
 19 |  * you may not use this file except in compliance with the License.
 20 |  * You may obtain a copy of the License at
 21 |  * 
 22 |  *   http://www.apache.org/licenses/LICENSE-2.0
 23 |  * 
 24 |  * Unless required by applicable law or agreed to in writing, software
 25 |  * distributed under the License is distributed on an "AS IS" BASIS,
 26 |  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 27 |  * See the License for the specific language governing permissions and
 28 |  * limitations under the License.
 29 |  */
 30 | 
 31 | /**
 32 |  * @author Jeff Lee
 33 |  * @since 2015-7-20 21:45:25
 34 |  * 	文件上传类
 35 |  * 		访问目标：/WebContent/component/uploadfile/upload.jsp
 36 |  */
 37 | @WebServlet( urlPatterns = "/upload.html" ) 
 38 | public class UploadServlet extends HttpServlet {
 39 | 
 40 | 	private static final long serialVersionUID = 1L;
 41 | 
 42 | 	@Override
 43 | 	protected void doPost(HttpServletRequest req, HttpServletResponse resp) 
 44 | 			throws ServletException, IOException {
 45 | 		//////
 46 | 		//	首先请求中的输入流，通过输出流输出到临时文件tempFileName
 47 | 		//////
 48 | 		// 从request中获取流信息
 49 | 		InputStream fileStream = req.getInputStream();
 50 | 		String tempFileName = "D:/tempFileName";
 51 | 		File tempFile = new File(tempFileName);
 52 | 		
 53 | 		// 文件输出流指向这个临时文件
 54 | 		FileOutputStream outputStream = new FileOutputStream(tempFile);
 55 | 		byte[] buff = new byte[1024];// 分配1024个字节大小的内存给buff byte数组
 56 | 		int n;
 57 | 		while((n = fileStream.read(buff)) != -1) {
 58 | 			outputStream.write(buff,0, n); // 读取1024个字节放到buff byte数组中
 59 | 		}
 60 | 		
 61 | 		// 关闭输出流、输入流
 62 | 		outputStream.close();
 63 | 		fileStream.close();
 64 | 		
 65 | 		//////
 66 | 		//	RandomAccessFile 进行操作临时文件tempFileName
 67 | 		//		RandomAccessFile的使用在开源项目java-core-learning中有介绍使用
 68 | 		//////
 69 | 		// 读取临时文件
 70 | 		RandomAccessFile randomAccessFile = new RandomAccessFile(tempFile, "r");
 71 | 		// 读取文件第二行，为了读取文件名
 72 | 		int second = 1;
 73 | 		String secondLine = null;
 74 | 		while(second <= 2) {
 75 | 			secondLine = randomAccessFile.readLine();
 76 | 			second++;
 77 | 		}
 78 | 		// 获取文件名的位置
 79 | 		int fileNamePosition = secondLine.lastIndexOf("filename");
 80 | 		// 获取文件名称
 81 | 		String fileName = secondLine.substring(fileNamePosition + 10,// "filename='" 十个字符
 82 | 				secondLine.length() - 1);
 83 | 		
 84 | 		// 重定向文件指针到文件头
 85 | 		randomAccessFile.seek(0);
 86 | 		long startPosition = 0;
 87 | 		int i = 1;
 88 | 		// 获取文件内容起始位置
 89 | 		while ((n = randomAccessFile.readByte()) != -1 
 90 | 				&& i <= 4) { // 临时文件前面4行为表单属性
 91 | 			if (n == '\n') {
 92 | 				startPosition = randomAccessFile.getFilePointer();
 93 | 				i++;
 94 | 			}
 95 | 		}
 96 | 		
 97 | 		// 重定向到临时文件末尾
 98 | 		randomAccessFile.seek(randomAccessFile.length());
 99 | 		long endPosition = randomAccessFile.getFilePointer();
100 | 		int j = 1;
101 | 		while ( endPosition > 0 
102 | 				&& j <= 2 ) { // 临时文件后面2行为表单属性
103 | 			endPosition--;
104 | 			randomAccessFile.seek(endPosition);
105 | 			if (randomAccessFile.readByte() == '\n') {
106 | 				j++;
107 | 			}
108 | 		}
109 | 		
110 | 		//////
111 | 		//	保存文件到上传文件路径
112 | 		//////
113 | 		// 设置保存上传文件路径目录
114 | 		String realPath = getServletContext().getRealPath("/") + "upload";
115 | 		File uploadDir = new File(realPath);
116 | 		// 如果路径不存在，创建路径
117 | 		if (!uploadDir.exists()) {
118 | 			uploadDir.mkdirs();
119 | 		}
120 | 		File uploadFile = new File(uploadDir,fileName);
121 | 		RandomAccessFile randomAccessFile2 = new RandomAccessFile(uploadFile, "rw");
122 | 		
123 | 		// 从临时文件中读取文件内容（从起始位置开始获取）
124 | 		randomAccessFile.seek(startPosition);
125 | 		while (startPosition < endPosition -1) {
126 | 			randomAccessFile2.write(randomAccessFile.readByte());
127 | 			startPosition = randomAccessFile.getFilePointer();
128 | 		}
129 | 		
130 | 		// 关输出输入流，删除临时文件
131 | 		randomAccessFile.close();
132 | 		randomAccessFile2.close();
133 | 		tempFile.delete();
134 | 
135 | 		//////
136 | 		//	输出信息
137 | 		//////
138 | 		resp.setContentType("text/html;");
139 | 		resp.setCharacterEncoding("UTF-8");
140 | 		resp.setHeader("content-type","text/html;charset=UTF-8");
141 | 		PrintWriter out = resp.getWriter();
142 | 		out.println(" 绝对路径：" + uploadFile.getAbsolutePath());
143 | 		out.println("<br> 可读：" + uploadFile.canRead());
144 | 		out.println("<br> 可写：" + uploadFile.canWrite());
145 | 		out.println("<br> 文件名：" + uploadFile.getName());
146 | 		out.println("<br> 上级目录：" + uploadFile.getParent());
147 | 		out.println("<br> 相对地址：" + uploadFile.getPath());
148 | 		out.println("<br> 长度：" + uploadFile.length());
149 | 		out.println("<br> 最近修改时间：" + uploadFile.lastModified());
150 | 	}	
151 | 
152 | 	
153 | }
154 | 


--------------------------------------------------------------------------------
/src/org/jsp/Counter.java:
--------------------------------------------------------------------------------
 1 | package org.jsp;
 2 | /*
 3 |  * Copyright [2015] [Jeff Lee]
 4 |  *
 5 |  * Licensed under the Apache License, Version 2.0 (the "License");
 6 |  * you may not use this file except in compliance with the License.
 7 |  * You may obtain a copy of the License at
 8 |  * 
 9 |  *   http://www.apache.org/licenses/LICENSE-2.0
10 |  * 
11 |  * Unless required by applicable law or agreed to in writing, software
12 |  * distributed under the License is distributed on an "AS IS" BASIS,
13 |  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 |  * See the License for the specific language governing permissions and
15 |  * limitations under the License.
16 |  */
17 | 
18 | /**
19 |  * @author Jeff Lee
20 |  * @since 2015-7-20 21:45:25
21 |  * 	page指令之计数器累加器
22 |  * 		文件目标：WebContent/counter.jsp
23 |  */
24 | public class Counter {
25 | 	private static int count;
26 | 	
27 | 	public static synchronized int getCount() {
28 | 		count++;
29 | 		return count;
30 | 	}
31 | 	
32 | }
33 | 


--------------------------------------------------------------------------------
/src/org/servlet/HttpServletService.java:
--------------------------------------------------------------------------------
  1 | package org.servlet;
  2 | 
  3 | import java.io.IOException;
  4 | import java.text.MessageFormat;
  5 | import java.util.ResourceBundle;
  6 | 
  7 | import javax.servlet.ServletException;
  8 | import javax.servlet.http.HttpServlet;
  9 | import javax.servlet.http.HttpServletRequest;
 10 | import javax.servlet.http.HttpServletResponse;
 11 | /*
 12 |  * Copyright [2015] [Jeff Lee]
 13 |  *
 14 |  * Licensed under the Apache License, Version 2.0 (the "License");
 15 |  * you may not use this file except in compliance with the License.
 16 |  * You may obtain a copy of the License at
 17 |  * 
 18 |  *   http://www.apache.org/licenses/LICENSE-2.0
 19 |  * 
 20 |  * Unless required by applicable law or agreed to in writing, software
 21 |  * distributed under the License is distributed on an "AS IS" BASIS,
 22 |  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 23 |  * See the License for the specific language governing permissions and
 24 |  * limitations under the License.
 25 |  */
 26 | 
 27 | /**
 28 |  * @author Jeff Lee
 29 |  * @since 2015-9-3 19:30:56
 30 |  * 	HttpServlet的service方法实现
 31 |  */
 32 | public class HttpServletService extends HttpServlet{
 33 | 	private static final long serialVersionUID = -5630942344912714108L;
 34 | 	
 35 |     private static final String METHOD_DELETE = "DELETE";
 36 |     private static final String METHOD_HEAD = "HEAD";
 37 |     private static final String METHOD_GET = "GET";
 38 |     private static final String METHOD_OPTIONS = "OPTIONS";
 39 |     private static final String METHOD_POST = "POST";
 40 |     private static final String METHOD_PUT = "PUT";
 41 |     private static final String METHOD_TRACE = "TRACE";
 42 | 
 43 |     private static final String HEADER_IFMODSINCE = "If-Modified-Since";
 44 | 
 45 |     private static final String LSTRING_FILE =
 46 |             "javax.servlet.http.LocalStrings";
 47 |     private static ResourceBundle lStrings =
 48 |             ResourceBundle.getBundle(LSTRING_FILE);
 49 |     /**
 50 |      * HTTP状态码304
 51 |      */
 52 |     public static final int SC_NOT_MODIFIED = 304;
 53 |     
 54 | 	/**
 55 | 	 * 接收来自 public service方法的标准HTTP请求，
 56 | 	 * 并将它们分发给此类中定义的doXXX方法。
 57 | 	 */
 58 | 	@SuppressWarnings("unused")
 59 | 	protected void service(HttpServletRequest req, HttpServletResponse resp) 
 60 | 			throws ServletException, IOException {
 61 | 		// 获取请求方法名
 62 | 		String method = req.getMethod();
 63 | 		// 如果是GET请求
 64 | 		if (method.equals(METHOD_GET)) {
 65 | 			// 上一次修改HttpServletRequest对象的时间
 66 | 			long lastModified = getLastModified(req);
 67 | 			// 没有改变
 68 | 			if (lastModified == -1) {
 69 | 				doGet(req, resp);
 70 | 			} else {
 71 | 				long ifModifiedSince;
 72 | 				try {
 73 | 					// 获取请求头中服务器修改时间
 74 | 					ifModifiedSince = req.getDateHeader(HEADER_IFMODSINCE);
 75 | 				} catch (IllegalArgumentException iae) {
 76 | 					// 获取无效
 77 | 					ifModifiedSince = -1;
 78 | 				}
 79 | 				// 如果请求头服务器修改时间迟
 80 | 				if (ifModifiedSince < (lastModified / 1000 * 1000)) {
 81 | 					// 设置修改HttpServletResponse对象的时间,重新设置浏览器的参数
 82 |                   //maybeSetLastModified(resp, lastModified);
 83 | 					// 调用doGet方法
 84 |                     doGet(req, resp);
 85 | 				} else {
 86 | 					// 304 HTTP状态码
 87 | 					resp.setStatus(SC_NOT_MODIFIED);
 88 | 				}
 89 | 			}
 90 | 		} else if (method.equals(METHOD_HEAD)) {
 91 |             long lastModified = getLastModified(req);
 92 |           //maybeSetLastModified(resp, lastModified);
 93 |             doHead(req, resp);
 94 |         } else if (method.equals(METHOD_POST)) {
 95 |             doPost(req, resp);
 96 |         } else if (method.equals(METHOD_PUT)) {
 97 |             doPut(req, resp);
 98 |         } else if (method.equals(METHOD_DELETE)) {
 99 |             doDelete(req, resp);
100 |         } else if (method.equals(METHOD_OPTIONS)) {
101 |             doOptions(req,resp);
102 |         } else if (method.equals(METHOD_TRACE)) {
103 |             doTrace(req,resp);
104 |         } else {
105 |             // 如果没有被请求到的话
106 |             String errMsg = lStrings.getString("http.method_not_implemented");
107 |             Object[] errArgs = new Object[1];
108 |             errArgs[0] = method;
109 |             errMsg = MessageFormat.format(errMsg, errArgs);
110 |             // 501 HTTP状态码
111 |             resp.sendError(HttpServletResponse.SC_NOT_IMPLEMENTED, errMsg);
112 |         }
113 | 	}
114 | 	
115 | }
116 | 


--------------------------------------------------------------------------------
/src/org/servlet/async/AsyncServlet.java:
--------------------------------------------------------------------------------
 1 | package org.servlet.async;
 2 | 
 3 | import java.io.IOException;
 4 | import java.util.Date;
 5 | 
 6 | import javax.servlet.AsyncContext;
 7 | import javax.servlet.ServletException;
 8 | import javax.servlet.annotation.WebServlet;
 9 | import javax.servlet.http.HttpServlet;
10 | import javax.servlet.http.HttpServletRequest;
11 | import javax.servlet.http.HttpServletResponse;
12 | /*
13 |  * Copyright [2015] [Jeff Lee]
14 |  *
15 |  * Licensed under the Apache License, Version 2.0 (the "License");
16 |  * you may not use this file except in compliance with the License.
17 |  * You may obtain a copy of the License at
18 |  * 
19 |  *   http://www.apache.org/licenses/LICENSE-2.0
20 |  * 
21 |  * Unless required by applicable law or agreed to in writing, software
22 |  * distributed under the License is distributed on an "AS IS" BASIS,
23 |  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
24 |  * See the License for the specific language governing permissions and
25 |  * limitations under the License.
26 |  */
27 | 
28 | /**
29 |  * @author Jeff Lee
30 |  * @since 2015-9-3 20:30:19
31 |  * 	Servlet 3.0提供的异步处理
32 |  * 		通过AsyncContext类实现，该对象从请求Request的startAsync方法获取。
33 |  */
34 | @WebServlet(urlPatterns="/async",asyncSupported=true)// 开始异步调用
35 | public class AsyncServlet extends HttpServlet {
36 | 	
37 | 	private static final long serialVersionUID = -6795872120748178723L;
38 | 
39 | 	@Override
40 | 	protected void doGet(HttpServletRequest req, HttpServletResponse resp)
41 | 		throws ServletException,IOException {
42 | 		resp.setContentType("text/html;charset=UTF-8");
43 | 		Date startDate = new Date();
44 | 		System.out.println("Servlet当前时间 --- " + startDate );
45 | 		
46 | 		// 从请求中获取AsyncContext
47 | 		AsyncContext asyncContext = req.startAsync();
48 | 		// 设置异步调用的超时时长
49 | 		asyncContext.setTimeout(30*1000);// 30秒
50 | 		// 开始异步调用
51 | 		asyncContext.start(new AsyncThread(asyncContext));
52 | 		
53 | 		Date endDate = new Date();
54 | 		System.out.println("Servlet结束时间 --- " + endDate);
55 | 		
56 | 		// startDate和endDate时间差不多相等。
57 | 		// 说明Servlet重新发起了一条线程去掉用耗时业务方法，避免了阻塞式调用
58 | 	}
59 | }
60 | 


--------------------------------------------------------------------------------
/src/org/servlet/async/AsyncThread.java:
--------------------------------------------------------------------------------
 1 | package org.servlet.async;
 2 | 
 3 | import java.util.Date;
 4 | 
 5 | import javax.servlet.AsyncContext;
 6 | import javax.servlet.ServletRequest;
 7 | 
 8 | /*
 9 |  * Copyright [2015] [Jeff Lee]
10 |  *
11 |  * Licensed under the Apache License, Version 2.0 (the "License");
12 |  * you may not use this file except in compliance with the License.
13 |  * You may obtain a copy of the License at
14 |  * 
15 |  *   http://www.apache.org/licenses/LICENSE-2.0
16 |  * 
17 |  * Unless required by applicable law or agreed to in writing, software
18 |  * distributed under the License is distributed on an "AS IS" BASIS,
19 |  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
20 |  * See the License for the specific language governing permissions and
21 |  * limitations under the License.
22 |  */
23 | 
24 | /**
25 |  * @author Jeff Lee
26 |  * @since 2015-9-3 20:30:19
27 |  * 	Servlet 3.0提供的异步处理
28 |  * 		通过AsyncContext类实现，该对象从请求Request的startAsync方法获取。
29 |  */
30 | public class AsyncThread implements Runnable {
31 | 
32 | 	// 异步上下文
33 | 	private AsyncContext asyncContext = null;
34 | 	
35 | 	public AsyncThread(AsyncContext asyncContext) {
36 | 		this.asyncContext = asyncContext;
37 | 	}
38 | 
39 | 	@Override
40 | 	public void run() {
41 | 		try {
42 | 			// 开始时间
43 | 			Date startDate = new Date();
44 | 			// 暂停5秒
45 | 			Thread.sleep(5 * 1000);
46 | 			// 开始时间
47 | 			Date endDate = new Date();
48 | 						
49 | 			// 从异步上下文获取请求对象
50 | 			ServletRequest request = asyncContext.getRequest();
51 | 			request.setAttribute("name", "BYSocket");
52 | 			request.setAttribute("startDate", startDate);
53 | 			request.setAttribute("endDate", endDate);
54 | 			asyncContext.dispatch("/async/asyncThread.jsp");
55 | 		} catch (InterruptedException e) {
56 | 			e.printStackTrace();
57 | 		}
58 | 	}
59 | 
60 | }
61 | 


--------------------------------------------------------------------------------
/src/org/servlet/reqAndresp/HelloWorldServletT.java:
--------------------------------------------------------------------------------
 1 | package org.servlet.reqAndresp;
 2 | 
 3 | import java.io.IOException;
 4 | import java.io.PrintWriter;
 5 | 
 6 | import javax.servlet.ServletException;
 7 | import javax.servlet.annotation.WebServlet;
 8 | import javax.servlet.http.HttpServlet;
 9 | import javax.servlet.http.HttpServletRequest;
10 | import javax.servlet.http.HttpServletResponse;
11 | /*
12 |  * Copyright [2015] [Jeff Lee]
13 |  *
14 |  * Licensed under the Apache License, Version 2.0 (the "License");
15 |  * you may not use this file except in compliance with the License.
16 |  * You may obtain a copy of the License at
17 |  * 
18 |  *   http://www.apache.org/licenses/LICENSE-2.0
19 |  * 
20 |  * Unless required by applicable law or agreed to in writing, software
21 |  * distributed under the License is distributed on an "AS IS" BASIS,
22 |  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
23 |  * See the License for the specific language governing permissions and
24 |  * limitations under the License.
25 |  */
26 | 
27 | /**
28 |  * @author Jeff Lee
29 |  * @since 2015-6-25 19:46:45
30 |  * 	HelloWrold案例
31 |  */
32 | @WebServlet(urlPatterns = "/helloWorld.html")
33 | public class HelloWorldServletT extends HttpServlet{
34 | 	
35 | 	private static final long serialVersionUID = 1L;
36 | 
37 | 	@Override
38 | 	protected void doGet(HttpServletRequest req, HttpServletResponse resp)
39 | 			throws ServletException, IOException{
40 | 		// 获取输出打印对象
41 | 		PrintWriter out = resp.getWriter();
42 | 		out.println("Hello,Servlet/JSP World!");
43 | 	}
44 | }
45 | 


--------------------------------------------------------------------------------
/src/org/servlet/reqAndresp/LifeCircleServletT.java:
--------------------------------------------------------------------------------
 1 | package org.servlet.reqAndresp;
 2 | 
 3 | import java.io.IOException;
 4 | 
 5 | import javax.servlet.ServletException;
 6 | import javax.servlet.annotation.WebServlet;
 7 | import javax.servlet.http.HttpServlet;
 8 | import javax.servlet.http.HttpServletRequest;
 9 | import javax.servlet.http.HttpServletResponse;
10 | 
11 | /*
12 |  * Copyright [2015] [Jeff Lee]
13 |  *
14 |  * Licensed under the Apache License, Version 2.0 (the "License");
15 |  * you may not use this file except in compliance with the License.
16 |  * You may obtain a copy of the License at
17 |  * 
18 |  *   http://www.apache.org/licenses/LICENSE-2.0
19 |  * 
20 |  * Unless required by applicable law or agreed to in writing, software
21 |  * distributed under the License is distributed on an "AS IS" BASIS,
22 |  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
23 |  * See the License for the specific language governing permissions and
24 |  * limitations under the License.
25 |  */
26 | 
27 | /**
28 |  * @author Jeff Lee
29 |  * @since 2015-7-10 21:40:41
30 |  * 	Servlet生命周期演示案例
31 |  */
32 | @WebServlet(urlPatterns = "/lifeCircle")
33 | public class LifeCircleServletT extends HttpServlet {
34 | 
35 | 	private static final long serialVersionUID = 1L;
36 | 
37 | 	@Override
38 | 	protected void service(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
39 | 		resp.setContentType("text/html;");
40 | 		resp.setCharacterEncoding("UTF-8");
41 | 		resp.setHeader("content-type","text/html;charset=UTF-8");
42 | 		
43 | 		System.out.println("Servlet 执行了。");
44 | 		resp.getWriter().println("Servlet生命周期案例。<br> Servlet 执行了！");
45 | 	}
46 | 
47 | 	@Override
48 | 	public void destroy() {
49 | 		System.out.println("Servlet 被卸载了！");
50 | 	}
51 | 
52 | 	@Override
53 | 	public void init() throws ServletException {
54 | 		System.out.println("Servlet 初始化了！\t（初始化只有一次，Servlet是单例的。）ps:不信可再次访问。");
55 | 	}
56 | 
57 | 	
58 | }
59 | 


--------------------------------------------------------------------------------
/src/org/servlet/reqAndresp/SuperServiceServletT.java:
--------------------------------------------------------------------------------
 1 | package org.servlet.reqAndresp;
 2 | 
 3 | import java.io.IOException;
 4 | 
 5 | import javax.servlet.ServletException;
 6 | import javax.servlet.annotation.WebServlet;
 7 | import javax.servlet.http.HttpServlet;
 8 | import javax.servlet.http.HttpServletRequest;
 9 | import javax.servlet.http.HttpServletResponse;
10 | /*
11 |  * Copyright [2015] [Jeff Lee]
12 |  *
13 |  * Licensed under the Apache License, Version 2.0 (the "License");
14 |  * you may not use this file except in compliance with the License.
15 |  * You may obtain a copy of the License at
16 |  * 
17 |  *   http://www.apache.org/licenses/LICENSE-2.0
18 |  * 
19 |  * Unless required by applicable law or agreed to in writing, software
20 |  * distributed under the License is distributed on an "AS IS" BASIS,
21 |  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
22 |  * See the License for the specific language governing permissions and
23 |  * limitations under the License.
24 |  */
25 | 
26 | /**
27 |  * @author Jeff Lee
28 |  * @since 2015-7-10 23:11:57
29 |  * 	super.service测试案例
30 |  */
31 | @WebServlet("/superService")
32 | public class SuperServiceServletT extends HttpServlet {
33 | 
34 | 	private static final long serialVersionUID = 1L;
35 | 
36 | 	@Override
37 | 	protected void doGet(HttpServletRequest req, HttpServletResponse resp) 
38 | 			throws ServletException, IOException {
39 | 		System.out.println("第三步：ServiceServletT.doGet()");
40 | 		
41 | 		resp.setContentType("text/html;");
42 | 		resp.setCharacterEncoding("UTF-8");
43 | 		resp.setHeader("content-type","text/html;charset=UTF-8");
44 | 		
45 | 		resp.getWriter().println("super.service测试案例");
46 | 	}
47 | 
48 | 	@Override
49 | 	protected void service(HttpServletRequest req, HttpServletResponse resp) 
50 | 			throws ServletException, IOException {
51 | 		System.out.println("第一步：ServiceServletT.service()");
52 | 		// 第二步：调用父类{@Link BaseServlet}的service方法
53 | 		super.service(req, resp);
54 | 		// 第三步：父类{@Link HttpServlet.doGet} 调用{@Link ServiceServletT.doGet}
55 | 		// 因为父类doGet被Override，如果调用父类doGet需要 super。doGet()
56 | 	}
57 | 
58 | 	
59 | }
60 | 


--------------------------------------------------------------------------------
/src/org/servlet/sessionMngmt/HttpSessionByCookieServletT.java:
--------------------------------------------------------------------------------
 1 | package org.servlet.sessionMngmt;
 2 | 
 3 | import java.io.IOException;
 4 | import java.io.PrintWriter;
 5 | 
 6 | import javax.servlet.ServletException;
 7 | import javax.servlet.annotation.WebServlet;
 8 | import javax.servlet.http.HttpServlet;
 9 | import javax.servlet.http.HttpServletRequest;
10 | import javax.servlet.http.HttpServletResponse;
11 | import javax.servlet.http.HttpSession;
12 | /*
13 |  * Copyright [2015] [Jeff Lee]
14 |  *
15 |  * Licensed under the Apache License, Version 2.0 (the "License");
16 |  * you may not use this file except in compliance with the License.
17 |  * You may obtain a copy of the License at
18 |  * 
19 |  *   http://www.apache.org/licenses/LICENSE-2.0
20 |  * 
21 |  * Unless required by applicable law or agreed to in writing, software
22 |  * distributed under the License is distributed on an "AS IS" BASIS,
23 |  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
24 |  * See the License for the specific language governing permissions and
25 |  * limitations under the License.
26 |  */
27 | 
28 | /**
29 |  * @author Jeff Lee
30 |  * @since 2015-7-12 10:58:28
31 |  * 	HttpSession的默认Cookie实现案例
32 |  */
33 | @WebServlet(urlPatterns = "/sessionByCookie")
34 | public class HttpSessionByCookieServletT extends HttpServlet {
35 | 
36 | 	private static final long serialVersionUID = 1L;
37 | 
38 | 	@Override
39 | 	protected void doGet(HttpServletRequest req, HttpServletResponse resp) 
40 | 			throws ServletException, IOException {
41 | 		
42 | 		// 获取session
43 | 		// 如果是第一次请求的话，会创建一个HttpSeesion，等同于 req.getSession(true);
44 | 		// 如果已存在session，则会获取session。
45 | 		HttpSession session = req.getSession();
46 | 		
47 | 		if (session.isNew()) {
48 | 			// 设置session属性值	
49 | 			session.setAttribute("name", "Jeff");
50 | 		}
51 | 		// 获取SessionId
52 | 		String sessionId = session.getId();
53 | 		
54 | 		PrintWriter out = resp.getWriter();
55 | 		// 如果HttpSeesion是新建的话
56 | 		if (session.isNew()) {
57 | 			out.println("Hello,HttpSession! <br>The first response - SeesionId=" 
58 | 					+ sessionId + " <br>");
59 | 		} else {
60 | 			out.println("Hello,HttpSession! <br>The second response - SeesionId=" 
61 | 					+ sessionId + " <br>");
62 | 			// 从Session获取属性值
63 | 			out.println("The second-response - name: " 
64 | 					+ session.getAttribute("name"));
65 | 		}
66 | 		
67 | 	}
68 | 	
69 | }
70 | 


--------------------------------------------------------------------------------
/src/org/servlet/sessionMngmt/HttpSessionMethodsServletT.java:
--------------------------------------------------------------------------------
 1 | package org.servlet.sessionMngmt;
 2 | 
 3 | import java.io.IOException;
 4 | import java.io.PrintWriter;
 5 | 
 6 | import javax.servlet.ServletException;
 7 | import javax.servlet.annotation.WebServlet;
 8 | import javax.servlet.http.HttpServlet;
 9 | import javax.servlet.http.HttpServletRequest;
10 | import javax.servlet.http.HttpServletResponse;
11 | import javax.servlet.http.HttpSession;
12 | 
13 | /*
14 |  * Copyright [2015] [Jeff Lee]
15 |  *
16 |  * Licensed under the Apache License, Version 2.0 (the "License");
17 |  * you may not use this file except in compliance with the License.
18 |  * You may obtain a copy of the License at
19 |  * 
20 |  *   http://www.apache.org/licenses/LICENSE-2.0
21 |  * 
22 |  * Unless required by applicable law or agreed to in writing, software
23 |  * distributed under the License is distributed on an "AS IS" BASIS,
24 |  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
25 |  * See the License for the specific language governing permissions and
26 |  * limitations under the License.
27 |  */
28 | 
29 | /**
30 |  * @author Jeff Lee
31 |  * @since 2015-6-25 19:46:45
32 |  * 	HttpSession的详细案例
33 |  */
34 | @WebServlet(urlPatterns = "/sessionMethods")
35 | public class HttpSessionMethodsServletT extends HttpServlet{
36 | 
37 | 	private static final long serialVersionUID = 1L;
38 | 
39 | 	@Override
40 | 	protected void doGet(HttpServletRequest req, HttpServletResponse resp) 
41 | 			throws ServletException, IOException {
42 | 		resp.setContentType("text/html;");
43 | 		resp.setCharacterEncoding("UTF-8");
44 | 		resp.setHeader("content-type","text/html;charset=UTF-8");
45 | 		PrintWriter out = resp.getWriter();
46 | 		
47 | 		// 从请求中获取Session
48 | 		HttpSession session = req.getSession();
49 | 		// 绑定对象到Session
50 | 		session.setAttribute("sessionName", "sessionValue");
51 | 		
52 | 		// 返回第一次创建Session的时间
53 | 		out.println("创建会话时间：" + session.getCreationTime() + "<br>");
54 | 		// 返回离最近一次会话操作的间隔
55 | 		out.println("离最近一次会话操作的间隔：" + session.getLastAccessedTime() + "<br>");
56 | 		// 设置会话最大时间间隔
57 | 		session.setMaxInactiveInterval(10 * 60); // 10分钟，默认20分钟
58 | 		// 返回会话最大时间间隔
59 | 		out.println("会话最大时间间隔：" + session.getMaxInactiveInterval() + "<br>");
60 | 		
61 | 		// 结束会话
62 | 		//session.invalidate();
63 | 		//session.setMaxInactiveInterval(0);
64 | 	}
65 | 	
66 | 	
67 | }
68 | 


--------------------------------------------------------------------------------
/src/org/servlet/sessionMngmt/HttpSessionServletT.java:
--------------------------------------------------------------------------------
 1 | package org.servlet.sessionMngmt;
 2 | 
 3 | import java.io.IOException;
 4 | import java.io.PrintWriter;
 5 | 
 6 | import javax.servlet.ServletException;
 7 | import javax.servlet.annotation.WebServlet;
 8 | import javax.servlet.http.HttpServlet;
 9 | /*
10 |  * Copyright [2015] [Jeff Lee]
11 |  *
12 |  * Licensed under the Apache License, Version 2.0 (the "License");
13 |  * you may not use this file except in compliance with the License.
14 |  * You may obtain a copy of the License at
15 |  * 
16 |  *   http://www.apache.org/licenses/LICENSE-2.0
17 |  * 
18 |  * Unless required by applicable law or agreed to in writing, software
19 |  * distributed under the License is distributed on an "AS IS" BASIS,
20 |  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
21 |  * See the License for the specific language governing permissions and
22 |  * limitations under the License.
23 |  */
24 | import javax.servlet.http.HttpServletRequest;
25 | import javax.servlet.http.HttpServletResponse;
26 | import javax.servlet.http.HttpSession;
27 | /*
28 |  * Copyright [2015] [Jeff Lee]
29 |  *
30 |  * Licensed under the Apache License, Version 2.0 (the "License");
31 |  * you may not use this file except in compliance with the License.
32 |  * You may obtain a copy of the License at
33 |  * 
34 |  *   http://www.apache.org/licenses/LICENSE-2.0
35 |  * 
36 |  * Unless required by applicable law or agreed to in writing, software
37 |  * distributed under the License is distributed on an "AS IS" BASIS,
38 |  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
39 |  * See the License for the specific language governing permissions and
40 |  * limitations under the License.
41 |  */
42 | 
43 | /**
44 |  * @author Jeff Lee
45 |  * @since 2015-6-25 19:46:45
46 |  * 	HttpSession的简单案例
47 |  */
48 | @WebServlet(urlPatterns = "/session")
49 | public class HttpSessionServletT extends HttpServlet{
50 | 
51 | 	private static final long serialVersionUID = 1L;
52 | 
53 | 	@Override
54 | 	protected void doGet(HttpServletRequest req, HttpServletResponse resp) 
55 | 			throws ServletException, IOException {
56 | 		// 从请求中获取Session
57 | 		HttpSession session = req.getSession();
58 | 		// 绑定对象到Session
59 | 		session.setAttribute("sessionName", "sessionValue");
60 | 		
61 | 		PrintWriter out = resp.getWriter();
62 | 		out.println("Hello,HttpSession!SeesionId" + session.getId() + " <br>");
63 | 		// 从Session获取对象
64 | 		out.println("sessionName: " + session.getAttribute("sessionName"));
65 | 	}
66 | 
67 | }
68 | 


--------------------------------------------------------------------------------
/src/org/tomcat/jsp/jasper/JspCompilerT.java:
--------------------------------------------------------------------------------
 1 | package org.tomcat.jsp.jasper;
 2 | 
 3 | import org.apache.jasper.JspC;
 4 | 
 5 | /*
 6 |  * Copyright [2015] [Jeff Lee]
 7 |  *
 8 |  * Licensed under the Apache License, Version 2.0 (the "License");
 9 |  * you may not use this file except in compliance with the License.
10 |  * You may obtain a copy of the License at
11 |  * 
12 |  *   http://www.apache.org/licenses/LICENSE-2.0
13 |  * 
14 |  * Unless required by applicable law or agreed to in writing, software
15 |  * distributed under the License is distributed on an "AS IS" BASIS,
16 |  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
17 |  * See the License for the specific language governing permissions and
18 |  * limitations under the License.
19 |  */
20 | 
21 | /**
22 |  * @author Jeff Lee
23 |  * @since 2015-7-16 13:32:04
24 |  * 	Jasper引擎编译JSP
25 |  * 		jar：Ant相关 + tomcat-juli.jar
26 |  */
27 | public class JspCompilerT {
28 | 	
29 | 	/**
30 | 	 * 编译Jsp文件，并输出
31 | 	 * @param uriRoot web应用的root目录
32 | 	 * @param outPutDir .java和.class文件输出目录
33 | 	 * @param jspFileName 要编译的jsp
34 | 	 * @return
35 | 	 */
36 | 	public static String jspCompiler(
37 | 			String uriRoot,
38 | 			String outPutDir,
39 | 			String jspFileName){
40 | 		String errorMsg = "";
41 | 		try {
42 | 			// 创建一个Jsp编译器
43 | 			JspC jspC = new JspC();
44 | 			
45 | 			// 设置相关属性，参加方法
46 | 			jspC.setUriroot(uriRoot);
47 | 			jspC.setOutputDir(outPutDir);
48 | 			jspC.setJspFiles(jspFileName);
49 | 			
50 | 			// 是否编译，是会包含.class文件
51 | 			jspC.setCompile(true);
52 | 			jspC.execute();
53 | 		} catch (Exception e) {
54 | 			errorMsg = e.toString();
55 | 		}
56 | 		return errorMsg;
57 | 	}
58 | 
59 | 	public static void main(String[] args) {
60 | 		System.out.println(
61 | 			JspCompilerT.jspCompiler(
62 | 					"./WebContent",
63 | 					"E:/", 
64 | 					"jspC.jsp")// 文件目标：WebContent/jspC.jsp
65 | 				);
66 | 	}
67 | }
68 | 


--------------------------------------------------------------------------------