Your Reading List
9 |
10 |
22 | -
11 |
- 12 | Title by 13 | Author 14 | (ISBN:ISBN) 15 | 16 |
- 17 | Description 18 | No Description Available 19 | 20 |
23 |
25 |
26 | you have no book in you book list
24 |27 |
Add a book
28 | 39 | 40 | -------------------------------------------------------------------------------- /readinglist/src/test/java/com/hisen/ReadinglistApplicationTests.java: -------------------------------------------------------------------------------- 1 | package com.hisen; 2 | 3 | import org.junit.Test; 4 | import org.junit.runner.RunWith; 5 | import org.springframework.boot.test.context.SpringBootTest; 6 | import org.springframework.test.context.junit4.SpringRunner; 7 | 8 | /** 9 | * 集成测试类 10 | */ 11 | @RunWith(SpringRunner.class) 12 | @SpringBootTest 13 | public class ReadinglistApplicationTests { 14 | 15 | @Test 16 | public void contextLoads() { 17 | } 18 | 19 | } 20 | -------------------------------------------------------------------------------- /src/main/java/com/hisen/Objects/bean/Student.java: -------------------------------------------------------------------------------- 1 | package com.hisen.Objects.bean; 2 | 3 | /** 4 | * Created by hisenyuan on 2017/3/21 at 15:07. 5 | */ 6 | public class Student { 7 | 8 | private String name; 9 | private Integer age; 10 | 11 | public Student(String name, Integer age) { 12 | this.name = name; 13 | this.age = age; 14 | } 15 | 16 | public String getName() { 17 | return name; 18 | } 19 | 20 | public void setName(String name) { 21 | this.name = name; 22 | } 23 | 24 | public Integer getAge() { 25 | return age; 26 | } 27 | 28 | public void setAge(Integer age) { 29 | this.age = age; 30 | } 31 | 32 | @Override 33 | public int hashCode() { 34 | return this.getAge(); 35 | } 36 | 37 | @Override 38 | public boolean equals(Object obj) { 39 | if (this == obj) { 40 | return true; 41 | } 42 | if (obj == null) { 43 | return false; 44 | } 45 | if (getClass() != obj.getClass()) { 46 | return false; 47 | } 48 | 49 | Student other = (Student) obj; 50 | if (name == null) { 51 | if (other.name != null) { 52 | return false; 53 | } 54 | } else if (!name.equals(other.name)) { 55 | return false; 56 | } 57 | return true; 58 | } 59 | } 60 | -------------------------------------------------------------------------------- /src/main/java/com/hisen/Reflect/ReflectDemo.java: -------------------------------------------------------------------------------- 1 | package com.hisen.Reflect; 2 | 3 | /** 4 | * 三种获取反射累的方法 5 | * Created by hisenyuan on 2017/4/14 at 10:37. 6 | */ 7 | public class ReflectDemo { 8 | 9 | public static void main(String[] args) throws ClassNotFoundException { 10 | //第一种：Class c1 = Code.class; 11 | Class class1 = ReflectDemo.class; 12 | System.out.println(class1.getName()); 13 | 14 | //第二种：Class c2 = code1.getClass(); 15 | ReflectDemo demo2 = new ReflectDemo(); 16 | Class c2 = demo2.getClass(); 17 | System.out.println(c2.getName()); 18 | 19 | //第三种：Class c3 = Class.forName("com.trigl.reflect.Code"); 20 | Class class3 = Class.forName("com.hisen.Reflect.ReflectDemo"); 21 | System.out.println(class3.getName()); 22 | } 23 | } 24 | -------------------------------------------------------------------------------- /src/main/java/com/hisen/Reflect/get/Person.java: -------------------------------------------------------------------------------- 1 | package com.hisen.Reflect.get; 2 | 3 | /** 4 | * Created by hisenyuan on 2017/4/14 at 10:42. 5 | */ 6 | public class Person { 7 | 8 | private String name; 9 | private int age; 10 | private String msg = "hello wrold"; 11 | 12 | public Person(String name) { 13 | this.name = name; 14 | System.out.println(name); 15 | } 16 | 17 | public Person() { 18 | } 19 | 20 | public String getName() { 21 | 22 | return name; 23 | } 24 | 25 | public void setName(String name) { 26 | this.name = name; 27 | } 28 | 29 | public int getAge() { 30 | return age; 31 | } 32 | 33 | public void setAge(int age) { 34 | this.age = age; 35 | } 36 | 37 | public void fun() { 38 | System.out.println("这是一个没有参数的fun方法"); 39 | } 40 | 41 | public void fun(String name, int age) { 42 | System.out.println("我叫" + name + ",今年" + age + "岁"); 43 | } 44 | } 45 | -------------------------------------------------------------------------------- /src/main/java/com/hisen/algorithms/Permutations.java: -------------------------------------------------------------------------------- 1 | package com.hisen.algorithms; 2 | 3 | /** 4 | * @Author hisenyuan 5 | * @Description 全排列 6 | * @Date 2019/4/7 22:02 7 | */ 8 | public class Permutations { 9 | public static void main(String[] args) { 10 | int[] arr = {1, 2, 3, 4}; 11 | fullPermutation(arr, 0, arr.length - 1); 12 | } 13 | 14 | private static void fullPermutation(int[] data, int start, int end) { 15 | if (start == end) { 16 | final StringBuilder sb = new StringBuilder(); 17 | for (int i : data) { 18 | sb.append(i); 19 | } 20 | System.out.println(sb.toString()); 21 | return; 22 | } 23 | for (int i = start; i <= end; i++) { 24 | swap(data, i, start); 25 | fullPermutation(data, start + 1, end); 26 | swap(data, i, start); 27 | } 28 | } 29 | 30 | private static void swap(int[] arr, int i, int j) { 31 | if (i == j) { 32 | return; 33 | } 34 | int tmp = arr[i]; 35 | arr[i] = arr[j]; 36 | arr[j] = tmp; 37 | } 38 | } 39 | -------------------------------------------------------------------------------- /src/main/java/com/hisen/algorithms/RotateArray.java: -------------------------------------------------------------------------------- 1 | package com.hisen.algorithms; 2 | 3 | import org.junit.Test; 4 | 5 | import java.util.Arrays; 6 | 7 | /** 8 | * @Author hisenyuan 9 | * @Description Rotate Array https://leetcode.com/explore/interview/card/top-interview-questions-easy/92/array/646/ 10 | * @Date 2019/4/26 16:02 11 | */ 12 | public class RotateArray { 13 | @Test 14 | public void testRotate() { 15 | int[] nums = {1, 2, 3, 4, 5, 6, 7}; 16 | int k = 9; 17 | rotate(nums, k); 18 | System.out.println(Arrays.toString(nums)); 19 | } 20 | 21 | private void rotate(int[] nums, int k) { 22 | final int length = nums.length; 23 | if (k > length) { 24 | k = k % length; 25 | } 26 | 27 | int[] tmp = new int[k]; 28 | 29 | System.arraycopy(nums, length - k, tmp, 0, k); 30 | 31 | for (int i = length - 1; i >= 0; i--) { 32 | if (i >= k) { 33 | nums[i] = nums[i - k]; 34 | } else { 35 | nums[i] = tmp[i]; 36 | } 37 | } 38 | } 39 | } 40 | -------------------------------------------------------------------------------- /src/main/java/com/hisen/algorithms/leetcode/MoveZeroes.java: -------------------------------------------------------------------------------- 1 | package com.hisen.algorithms.leetcode; 2 | 3 | import org.junit.Test; 4 | 5 | import java.util.Arrays; 6 | 7 | /** 8 | * @author hisenyuan 9 | * @date 2019-10-23 17:40 10 | * url:https://leetcode.com/explore/interview/card/top-interview-questions-easy/92/array/567/ 11 | */ 12 | public class MoveZeroes { 13 | @Test 14 | public void testMoveZeros() { 15 | int[] oriArray = {0, 0, 0, 0, 12, 0}; 16 | moveZeroes(oriArray); 17 | System.out.println(Arrays.toString(oriArray)); 18 | } 19 | 20 | private void moveZeroes(int[] nums) { 21 | int zeroCount = 0; 22 | for (int value : nums) { 23 | if (value == 0) { 24 | zeroCount = zeroCount + 1; 25 | } 26 | } 27 | while (zeroCount-- >= 0) { 28 | for (int i = 0; i < nums.length; i++) { 29 | if (nums[i] == 0 && i + 1 < nums.length) { 30 | int tmp = nums[i + 1]; 31 | nums[i + 1] = nums[i]; 32 | nums[i] = tmp; 33 | } 34 | } 35 | } 36 | } 37 | } 38 | -------------------------------------------------------------------------------- /src/main/java/com/hisen/algorithms/sort/SortingAlgorithms.java: -------------------------------------------------------------------------------- 1 | package com.hisen.algorithms.sort; 2 | 3 | import java.util.Arrays; 4 | 5 | import org.junit.Test; 6 | 7 | /** 8 | * @author : yhx 9 | * @date : 2017/11/7 16:24 10 | * @descriptor : 排序算法 11 | */ 12 | public class SortingAlgorithms { 13 | 14 | /** 15 | * 最简单的冒泡排序 16 | */ 17 | @Test 18 | public void bubbleSort() { 19 | int[] numbers = {3, 6, 2, 4, 5, 1, 7, 9, 8}; 20 | int temp = 0; 21 | int len = numbers.length; 22 | for (int i = 0; i < len - 1; i++) { 23 | for (int j = 0; j < len - 1 - i; j++) { 24 | if (numbers[j] > numbers[j + 1]) { 25 | temp = numbers[j]; 26 | numbers[j] = numbers[j + 1]; 27 | numbers[j + 1] = temp; 28 | } 29 | } 30 | } 31 | System.out.println(Arrays.toString(numbers)); 32 | } 33 | } 34 | -------------------------------------------------------------------------------- /src/main/java/com/hisen/algorithms/sort/java8Test.java: -------------------------------------------------------------------------------- 1 | package com.hisen.algorithms.sort; 2 | 3 | import java.util.ArrayList; 4 | import java.util.Collections; 5 | import java.util.Comparator; 6 | import java.util.List; 7 | /** 8 | * @author : yhx 9 | * @date : 2017/11/26 22:29 10 | * @descriptor : lambda表达式排序算法 11 | */ 12 | public class java8Test { 13 | 14 | public static void main(String args[]) { 15 | 16 | List
8 | * Created by hisenyuan on 2017/5/11 at 18:44.
9 | */
10 | public class ShowImageByBase64 {
11 | public static String showimage(){
12 | //写相对路径会报错，暂时不知道如何解决
13 | String imagePath = "C:\\1\\830.jpg";
14 | byte[] bytes = File2ByteArraysUtil.file2Bytes(imagePath);
15 | String s = Base64Util.encodeBase64(bytes);
16 | return s;
17 | }
18 | }
19 |
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/src/main/java/com/hisen/interview/AboutExtends.java:
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1 | package com.hisen.interview;
2 |
3 | /**
4 | * 变量不能被重写
5 | *
6 | * @author hisenyuan 2017年1月18日 下午10:33:33
7 | */
8 | public class AboutExtends {
9 |
10 | public static void main(String[] args) {
11 | // 里面的static块方法，new了就会执行
12 | // new B()两个都执行，new A()执行A的
13 | // static代码块在{}代码块后面执行
14 | A classA = new B();
15 | System.out.println(classA.a);
16 | classA.fun();
17 | // 输出信息
18 | // Astatic
19 | // Bstatic
20 | // I'm A class
21 | // I'm B class
22 | // 0
23 | // B
24 |
25 | // 多态记忆口诀
26 | // 变量多态看左边
27 | // 方法多态看右边
28 | // 静态多态看左边
29 | }
30 |
31 | public static class A {
32 |
33 | static {
34 | System.out.println("Astatic");
35 | }
36 |
37 | public int a = 0;
38 |
39 | {
40 | System.out.println("I'm A class");
41 | }
42 |
43 | public void fun() {
44 | System.out.println("A");
45 | }
46 | }
47 |
48 | public static class B extends A {
49 |
50 | static {
51 | System.out.println("Bstatic");
52 | }
53 |
54 | public int a = 1;
55 |
56 | {
57 | System.out.println("I'm B class");
58 | }
59 |
60 | public void fun() {
61 | System.out.println("B");
62 | }
63 | }
64 | }
65 |
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/src/main/java/com/hisen/interview/AboutNewObject.java:
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1 | package com.hisen.interview;
2 |
3 | /**
4 | * 有时候可能会遇到关于String 的一些问题
5 | * Created by hisenyuan on 2017/7/5 at 1:09.
6 | */
7 | public class AboutNewObject {
8 |
9 |
10 | public static void main(String[] args) {
11 | User m = new User();
12 | User w = new User();
13 | m.setAdd("北京");
14 | System.out.println(w.getAdd());
15 |
16 | String a = "xxx";
17 | //b指向a所指向的同一个对象
18 | String b = "xxx";
19 | //c是一个新对象
20 | String c = new String("xxx");
21 | System.out.println(a == b);
22 | System.out.println(a == c);
23 | //c.intern()，取c的值
24 | System.out.println(a == c.intern());
25 | }
26 |
27 | static class User {
28 |
29 | private String name;
30 | private String add;
31 |
32 | public String getName() {
33 | return name;
34 | }
35 |
36 | public void setName(String name) {
37 | this.name = name;
38 | }
39 |
40 | public String getAdd() {
41 | return add;
42 | }
43 |
44 | public void setAdd(String add) {
45 | this.add = add;
46 | }
47 | }
48 | }
49 |
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/src/main/java/com/hisen/interview/CreateNumberByRMB.java:
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1 | package com.hisen.interview;
2 |
3 | import org.junit.Test;
4 |
5 | /**
6 | * 动态规划问题
7 | * 根据人民币的币值 1、5、20、50、100
8 | * 判断一个特定的金额有多少中组合
9 | * Created by hisenyuan on 2017/7/15 at 22:34.
10 | */
11 | public class CreateNumberByRMB {
12 | @Test
13 | public void test3() {
14 | int[] rmb = {1, 5, 10, 20, 50, 100};
15 | int i = countWays(rmb, 5, 1000000);
16 | System.out.println(i);
17 | }
18 | /**
19 | * 第三组 - 动态规划
20 | * @param penny
21 | * @param n
22 | * @param aim
23 | * @return
24 | */
25 | public int countWays(int[] penny, int n, int aim) {
26 | // write code here
27 | if(n==0||penny==null||aim<0){
28 | return 0;
29 | }
30 | int[][] pd = new int[n][aim+1];
31 | for(int i=0;i\n" 23 | + "\t解压密码：www.250sb.cn__1324\n" 24 | + "
"; 25 | //匹配 26 | String regex = "解压密码.*\\s"; 27 | Pattern p = Pattern.compile(regex); 28 | Matcher matcher = p.matcher(s); 29 | String t = "\\s"; 30 | if (matcher.find()){ 31 | System.out.println(matcher.group()); 32 | }else { 33 | System.out.println(t); 34 | } 35 | } 36 | 37 | @Test 38 | public void isHaveUrl(){ 39 | String url = "这是京东官网：www.jd.com"; 40 | Pattern pattern = Pattern.compile(".*www.jd.com.*"); 41 | Matcher matcher = pattern.matcher(url); 42 | if (matcher.find()){ 43 | System.out.println(matcher.group()); 44 | }else { 45 | System.out.println("未匹配"); 46 | } 47 | } 48 | } 49 | -------------------------------------------------------------------------------- /src/main/java/com/hisen/string/File2Base64.java: -------------------------------------------------------------------------------- 1 | package com.hisen.string; 2 | 3 | import com.hisen.utils.Base64Util; 4 | import com.hisen.utils.File2ByteArraysUtil; 5 | 6 | /** 7 | * Created by hisenyuan on 2017/4/18 at 18:13. 8 | */ 9 | public class File2Base64 { 10 | 11 | public static void main(String[] args) { 12 | byte[] bytes = File2ByteArraysUtil.file2Bytes("src/main/java/com/hisen/string/text/tomcat.png"); 13 | //图片加密为base64 14 | String s = Base64Util.encodeBase64(bytes); 15 | System.out.println("图片经Base64加密后的字符：" + s); 16 | //解密 17 | byte[] s1 = Base64Util.decodeBase64(s); 18 | //字符串转换回图片 19 | File2ByteArraysUtil.bytes2File(s1, "src/main/java/com/hisen/string/text/build.png"); 20 | } 21 | 22 | } 23 | -------------------------------------------------------------------------------- /src/main/java/com/hisen/string/StringSpecharsHandle.java: -------------------------------------------------------------------------------- 1 | package com.hisen.string; 2 | 3 | public class StringSpecharsHandle { 4 | 5 | public static void main(String[] args) { 6 | String s = "\\大/家\\好\b我\f是\n李\r刚\t"; 7 | System.out.println(string2Json(s)); 8 | } 9 | 10 | /** 11 | * 特殊字符处理，比如：“\A1;1300” 12 | * 13 | * @return string 14 | */ 15 | public static String string2Json(String s) { 16 | StringBuffer sb = new StringBuffer(); 17 | for (int i = 0; i < s.length(); i++) { 18 | char c = s.charAt(i); 19 | switch (c) { 20 | case '\"': 21 | sb.append("\\\""); 22 | break; 23 | case '\\': 24 | sb.append("\\\\"); 25 | break; 26 | case '/': 27 | sb.append("\\/"); 28 | break; 29 | case '\b': 30 | sb.append("\\b"); 31 | break; 32 | case '\f': 33 | sb.append("\\f"); 34 | break; 35 | case '\n': 36 | sb.append("\\n"); 37 | break; 38 | case '\r': 39 | sb.append("\\r"); 40 | break; 41 | case '\t': 42 | sb.append("\\t"); 43 | break; 44 | default: 45 | sb.append(c); 46 | } 47 | } 48 | return sb.toString(); 49 | } 50 | } -------------------------------------------------------------------------------- /src/main/java/com/hisen/string/split/ReplacePhoneNumber.java: -------------------------------------------------------------------------------- 1 | package com.hisen.string.split; 2 | 3 | /** 4 | * 手机号中间四位脱敏 5 | * Created by hisenyuan on 2017/8/22 at 19:24. 6 | */ 7 | public class ReplacePhoneNumber { 8 | 9 | public static void main(String[] args) { 10 | String p = "15520080808"; 11 | String s = p.replaceAll("(\\d{3})\\d{4}(\\d{4})", "$1****$2"); 12 | System.out.println(s); 13 | } 14 | } 15 | -------------------------------------------------------------------------------- /src/main/java/com/hisen/string/split/SplitLength.java: -------------------------------------------------------------------------------- 1 | package com.hisen.string.split; 2 | 3 | public class SplitLength { 4 | 5 | public static void main(String[] args) { 6 | String s = "5||1||||||||||||"; 7 | int i = s.split("\\|", -1).length; 8 | System.out.println(i);//15 9 | } 10 | } 11 | -------------------------------------------------------------------------------- /src/main/java/com/hisen/string/split/SplitString.java: -------------------------------------------------------------------------------- 1 | package com.hisen.string.split; 2 | 3 | import java.util.regex.Matcher; 4 | import java.util.regex.Pattern; 5 | 6 | /** 7 | * string line = "20E WED 01PM 0E"; 8 | * 转换为下面的输出结果 9 | * 10 | * @author hisenyuan 2016年4月7日 下午3:16:36 11 | */ 12 | public class SplitString { 13 | 14 | public static void main(String[] args) { 15 | Pattern p = Pattern.compile("(\\d+)(\\w+)\\s+(\\w+)\\s+(\\d+)(\\w+)\\s+(\\d+)(\\w+)"); 16 | 17 | String line = "20E WED 01PM 0E"; 18 | Matcher m = p.matcher(line); 19 | if (!m.matches()) { 20 | throw new IllegalArgumentException("Bad input: " + line); 21 | } else { 22 | int fDegree = Integer.parseInt(m.group(1)); 23 | String fDegreeEW = m.group(2); 24 | String day = m.group(3); 25 | int time = Integer.parseInt(m.group(4)); 26 | String amPm = m.group(5); 27 | int sDegree = Integer.parseInt(m.group(6)); 28 | String sDegreeEW = m.group(7); 29 | 30 | System.out.println("1：" + fDegree); 31 | System.out.println("2：" + fDegreeEW); 32 | System.out.println("3：" + day); 33 | System.out.println("4：" + time); 34 | System.out.println("5：" + amPm); 35 | System.out.println("6：" + sDegree); 36 | System.out.println("7：" + sDegreeEW); 37 | // 输出结果 38 | // 1：20 39 | // 2：E 40 | // 3：WED 41 | // 4：1 42 | // 5：PM 43 | // 6：0 44 | // 7：E 45 | } 46 | 47 | } 48 | } 49 | -------------------------------------------------------------------------------- /src/main/java/com/hisen/string/split/Str2List.java: -------------------------------------------------------------------------------- 1 | package com.hisen.string.split; 2 | 3 | import java.util.ArrayList; 4 | import java.util.Arrays; 5 | import java.util.List; 6 | import java.util.regex.Matcher; 7 | import java.util.regex.Pattern; 8 | 9 | /** 10 | * 特殊字符串转arraylist 利用正则表达式 11 | * 12 | * @author hisenyuan 13 | */ 14 | public class Str2List { 15 | 16 | public static void main(String[] args) { 17 | function1(); 18 | System.out.println("=====分割线====="); 19 | function2(); 20 | 21 | } 22 | 23 | /* 24 | * 利用正则表达式 25 | */ 26 | public static void function1() { 27 | String st = "[\"2.2.2.2\",\"1.1.1.1\",\"6.6.6.6\",\"4.4.4.4\"]"; 28 | String patternString = "(\\d\\.\\d\\.\\d\\.\\d)"; 29 | Pattern pattern = Pattern.compile(patternString); 30 | Matcher matcher = pattern.matcher(st); 31 | ArrayListDo you come in?
16 | 24 | 25 | 26 | -------------------------------------------------------------------------------- /src/main/webapp/index.jsp: -------------------------------------------------------------------------------- 1 | <%@ page import="com.hisen.image.ShowImageByBase64" %><%-- 2 | Created by IntelliJ IDEA. 3 | User: Administrator 4 | Date: 2017/5/11 5 | Time: 18:55 6 | To change this template use File | Settings | File Templates. 7 | --%> 8 | <%@ page contentType="text/html;charset=UTF-8" language="java" %> 9 | <% String imageStr = ShowImageByBase64.showimage();%> 10 | 11 | 12 |
16 |
17 |
18 |
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/ssm_study/src/main/java/com/hisen/dao/AppointmentDao.java:
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1 | package com.hisen.dao;
2 |
3 | import com.hisen.entity.Appointment;
4 | import org.apache.ibatis.annotations.Param;
5 |
6 | /**
7 | * Created by hisenyuan on 2017/4/6 at 16:59.
8 | */
9 | public interface AppointmentDao {
10 |
11 | /**
12 | * 插入预约图书记录
13 | *
14 | * @param bookId
15 | * @param studentId
16 | * @return 插入的行数
17 | */
18 | int insertAppointment(@Param("bookId") long bookId, @Param("studentId") long studentId);
19 |
20 | /**
21 | * 通过主键查询预约图书记录，并且携带图书实体
22 | *
23 | * @param bookId
24 | * @param studentId
25 | * @return
26 | */
27 | Appointment queryByKeyWithBook(@Param("bookId") long bookId, @Param("studentId") long studentId);
28 |
29 | }
30 |
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/ssm_study/src/main/java/com/hisen/dao/BookDao.java:
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1 | package com.hisen.dao;
2 |
3 | import com.hisen.entity.Book;
4 | import java.util.List;
5 | import org.apache.ibatis.annotations.Param;
6 |
7 | /**
8 | * Created by hisenyuan on 2017/4/6 at 16:58.
9 | */
10 | public interface BookDao {
11 |
12 | /**
13 | * 通过ID查询单本图书
14 | *
15 | * @param id
16 | * @return
17 | */
18 | Book queryById(long id);
19 |
20 | /**
21 | * 查询所有图书
22 | *
23 | * @param offset 查询起始位置
24 | * @param limit 查询条数
25 | * @return
26 | */
27 | List