├── .gitignore ├── SpringBoot_Annotation_Practical_Implementation ├── src │ ├── main │ │ ├── resources │ │ │ └── application.properties │ │ └── java │ │ │ └── com │ │ │ ├── masai2 │ │ │ └── Example.java │ │ │ └── masai │ │ │ ├── entity │ │ │ ├── Student.java │ │ │ └── Employee.java │ │ │ ├── controller │ │ │ └── MyController.java │ │ │ ├── MyConfig.java │ │ │ └── SpringAnnotationPracticalImplementationApplication.java │ └── test │ │ └── java │ │ └── com │ │ └── masai │ │ └── SpringAnnotationPracticalImplementationApplicationTests.java ├── .mvn │ └── wrapper │ │ ├── maven-wrapper.jar │ │ └── maven-wrapper.properties ├── .gitignore ├── pom.xml ├── mvnw.cmd └── mvnw └── README.md /.gitignore: -------------------------------------------------------------------------------- 1 | /.metadata/ 2 | -------------------------------------------------------------------------------- /SpringBoot_Annotation_Practical_Implementation/src/main/resources/application.properties: -------------------------------------------------------------------------------- 1 | 2 | -------------------------------------------------------------------------------- /SpringBoot_Annotation_Practical_Implementation/.mvn/wrapper/maven-wrapper.jar: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/Shubh2-0/SpringBoot_Annotations/HEAD/SpringBoot_Annotation_Practical_Implementation/.mvn/wrapper/maven-wrapper.jar -------------------------------------------------------------------------------- /SpringBoot_Annotation_Practical_Implementation/src/main/java/com/masai2/Example.java: -------------------------------------------------------------------------------- 1 | package com.masai2; 2 | 3 | import org.springframework.stereotype.Component; 4 | 5 | @Component 6 | public class Example { 7 | 8 | 9 | public void eating() { 10 | System.out.println(); 11 | } 12 | 13 | } 14 | -------------------------------------------------------------------------------- /SpringBoot_Annotation_Practical_Implementation/.mvn/wrapper/maven-wrapper.properties: -------------------------------------------------------------------------------- 1 | distributionUrl=https://repo.maven.apache.org/maven2/org/apache/maven/apache-maven/3.9.3/apache-maven-3.9.3-bin.zip 2 | wrapperUrl=https://repo.maven.apache.org/maven2/org/apache/maven/wrapper/maven-wrapper/3.2.0/maven-wrapper-3.2.0.jar 3 | -------------------------------------------------------------------------------- /SpringBoot_Annotation_Practical_Implementation/src/main/java/com/masai/entity/Student.java: -------------------------------------------------------------------------------- 1 | package com.masai.entity; 2 | 3 | import lombok.Data; 4 | 5 | @Data 6 | public class Student { 7 | 8 | int rollNo; 9 | String name; 10 | 11 | 12 | public void study() { 13 | 14 | System.out.println("LEARNING SPRING BOOT ANNOTATIONS"); 15 | } 16 | 17 | } 18 | -------------------------------------------------------------------------------- /SpringBoot_Annotation_Practical_Implementation/src/test/java/com/masai/SpringAnnotationPracticalImplementationApplicationTests.java: -------------------------------------------------------------------------------- 1 | package com.masai; 2 | 3 | import org.junit.jupiter.api.Test; 4 | import org.springframework.boot.test.context.SpringBootTest; 5 | 6 | @SpringBootTest 7 | class SpringAnnotationPracticalImplementationApplicationTests { 8 | 9 | @Test 10 | void contextLoads() { 11 | } 12 | 13 | } 14 | -------------------------------------------------------------------------------- /SpringBoot_Annotation_Practical_Implementation/.gitignore: -------------------------------------------------------------------------------- 1 | HELP.md 2 | target/ 3 | !.mvn/wrapper/maven-wrapper.jar 4 | !**/src/main/**/target/ 5 | !**/src/test/**/target/ 6 | 7 | ### STS ### 8 | .apt_generated 9 | .classpath 10 | .factorypath 11 | .project 12 | .settings 13 | .springBeans 14 | .sts4-cache 15 | 16 | ### IntelliJ IDEA ### 17 | .idea 18 | *.iws 19 | *.iml 20 | *.ipr 21 | 22 | ### NetBeans ### 23 | /nbproject/private/ 24 | /nbbuild/ 25 | /dist/ 26 | /nbdist/ 27 | /.nb-gradle/ 28 | build/ 29 | !**/src/main/**/build/ 30 | !**/src/test/**/build/ 31 | 32 | ### VS Code ### 33 | .vscode/ 34 | -------------------------------------------------------------------------------- /SpringBoot_Annotation_Practical_Implementation/src/main/java/com/masai/entity/Employee.java: -------------------------------------------------------------------------------- 1 | package com.masai.entity; 2 | 3 | import org.springframework.stereotype.Component; 4 | 5 | 6 | /* 7 | * THESE IS USED DECLARED THE CLASS AS A COMPONENT OF 8 | * IOC CONTAINER MEANS NOW THE CYCLE AND DEPENDENCIES 9 | * INJECTION IS MANAGED BY SPRING CONTAINER 10 | * 11 | */ 12 | @Component 13 | /* |_ @Controller (Component, MVC Controller) 14 | * |_ @Service (Component, Service Basically Business Logic) 15 | * |_ @Repository (Component, DAO ) 16 | */ 17 | public class Employee { 18 | 19 | 20 | public void sell() { 21 | 22 | System.out.println("SELLING ITEMS"); 23 | } 24 | 25 | } 26 | -------------------------------------------------------------------------------- /SpringBoot_Annotation_Practical_Implementation/src/main/java/com/masai/controller/MyController.java: -------------------------------------------------------------------------------- 1 | package com.masai.controller; 2 | 3 | import org.springframework.web.bind.annotation.GetMapping; 4 | import org.springframework.web.bind.annotation.PathVariable; 5 | import org.springframework.web.bind.annotation.RestController; 6 | 7 | @RestController 8 | public class MyController { 9 | 10 | 11 | @GetMapping("/home") 12 | public String homeHandler() { 13 | 14 | return "LEARNING SPRING BOOT ANNOTATIONS"; 15 | 16 | 17 | } 18 | 19 | 20 | @GetMapping("/add/{roll}") 21 | public String getRoll(@PathVariable("roll") String roll) { 22 | 23 | 24 | System.out.println(roll); 25 | return roll; 26 | } 27 | 28 | 29 | } 30 | -------------------------------------------------------------------------------- /SpringBoot_Annotation_Practical_Implementation/src/main/java/com/masai/MyConfig.java: -------------------------------------------------------------------------------- 1 | package com.masai; 2 | 3 | 4 | import org.springframework.context.annotation.Bean; 5 | import org.springframework.context.annotation.ComponentScan; 6 | import org.springframework.context.annotation.Configuration; 7 | import org.springframework.context.annotation.Lazy; 8 | 9 | import com.masai.entity.Student; 10 | 11 | 12 | /* 13 | * RETURN THE SPRING BEANS 14 | */ 15 | @Configuration 16 | @ComponentScan(basePackages = {"com"}) 17 | public class MyConfig { 18 | 19 | 20 | 21 | /* 22 | * THESE ANNOTATION USE IS WHERE WE A CLASS WHICH ANNOTATED WITH 23 | * @Configuration ANNOTATION 24 | * REPRESENT THAT BY THESE METHOD 25 | * WE RETURN ANY BEAN 26 | */ 27 | @Bean("student 1") 28 | @Lazy 29 | public Student getStudent() { 30 | System.out.println("CRETING STUDEN 1"); 31 | Student s = new Student(); 32 | s.setName("Student 1"); 33 | return s; 34 | 35 | } 36 | 37 | @Bean("student 2") 38 | /* 39 | * WHEN WE NEEDED THE THEN SPRING CONTAINER CREATED ONLY 40 | */ 41 | @Lazy 42 | public Student getStudent2() { 43 | System.out.println("CRETING STUDEN 2"); 44 | Student s = new Student(); 45 | s.setName("Student 2"); 46 | return s; 47 | 48 | } 49 | 50 | } 51 | -------------------------------------------------------------------------------- /SpringBoot_Annotation_Practical_Implementation/pom.xml: -------------------------------------------------------------------------------- 1 | 2 | 4 | 4.0.0 5 | 6 | org.springframework.boot 7 | spring-boot-starter-parent 8 | 3.1.2 9 | 10 | 11 | com.masai 12 | Spring_Annotation_Practical_Implementation 13 | 0.0.1-SNAPSHOT 14 | Spring_Annotation_Practical_Implementation 15 | Demo project for Spring Boot 16 | 17 | 17 18 | 19 | 20 | 21 | 22 | org.springframework.boot 23 | spring-boot-starter-web 24 | 25 | 26 | 27 | org.projectlombok 28 | lombok 29 | true 30 | 31 | 32 | org.springframework.boot 33 | spring-boot-starter-test 34 | test 35 | 36 | 37 | 38 | 39 | 40 | 41 | 42 | org.springframework.boot 43 | spring-boot-maven-plugin 44 | 45 | 46 | 47 | org.projectlombok 48 | lombok 49 | 50 | 51 | 52 | 53 | 54 | 55 | 56 | 57 | -------------------------------------------------------------------------------- /SpringBoot_Annotation_Practical_Implementation/src/main/java/com/masai/SpringAnnotationPracticalImplementationApplication.java: -------------------------------------------------------------------------------- 1 | package com.masai; 2 | 3 | import org.springframework.beans.factory.annotation.Autowired; 4 | import org.springframework.beans.factory.annotation.Qualifier; 5 | import org.springframework.boot.SpringApplication; 6 | import org.springframework.boot.autoconfigure.SpringBootApplication; 7 | 8 | import com.masai.entity.Employee; 9 | import com.masai.entity.Student; 10 | import com.masai2.Example; 11 | 12 | 13 | 14 | /* 15 | * MAIN CLASS IS ANNOTATED WITH THESE ANNOTATION 16 | * MEANS THESE ANNOTATION MARKED SPRING BOOT MAIN CLASS 17 | * 18 | * @SpringBootApplication = @EnableAutoConfiguration + 19 | * @ComponentScane + 20 | * @Configuration 21 | * 22 | * @EnableAutoConfiguration => WHEN WE CREATE ANY NORMAL APPLICATION USING SPRING FRAMEWORK 23 | * SO WE HAVE TO DO MANUAL CONFIGRATION (LIKE XML , JAVA BASED) 24 | * 25 | * 26 | * @ComponentScane => THESE ANNOTATION BASICALLY SCAN THE PACKAGE AND THIER 27 | * SUB PACKAGE FOR SPRING BEAN 28 | * 29 | * 30 | * @Configuration => WHERE OUR BEANS IS DECLARED AND RETURN 31 | * SOURCE WHERE WE GET THE BEANS 32 | * 33 | * 34 | * 35 | * 36 | * 37 | * 38 | * 39 | * 40 | * 41 | * 42 | * 43 | * 44 | * 45 | * 46 | * 47 | * * 48 | * 49 | * 50 | */ 51 | @SpringBootApplication 52 | public class SpringAnnotationPracticalImplementationApplication { 53 | 54 | 55 | /* 56 | * BASICALLY THESE ANNOTATION 57 | * IS USED AUTOWIRING (INJECT) 58 | * THE DEPENDENCIES THAT WE HAVE 59 | * 60 | */ 61 | @Autowired 62 | @Qualifier("student 2") 63 | private Student st; 64 | 65 | @Autowired 66 | private Employee emp; 67 | 68 | @Autowired 69 | private Example ex; 70 | 71 | 72 | /* 73 | * WHEN WE EXECUTE OUR APPLICATION THESE 74 | * MAIN METHOD IS EXECUTED 75 | */ 76 | 77 | public static void main(String[] args) { 78 | SpringApplication.run(SpringAnnotationPracticalImplementationApplication.class, args); 79 | } 80 | 81 | // @Override 82 | // public void run(String... args) throws Exception { 83 | // 84 | // emp.sell(); 85 | // st.study(); 86 | // System.out.println(st); 87 | // ex.eating(); 88 | // 89 | // } 90 | 91 | } 92 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # SpringBoot_Annotations 2 | 3 | ![image](https://github.com/Shubh2-0/SpringBoot_Annotations/assets/112773220/95dbb7aa-8639-45e5-89ba-b832fb332f35) 4 | 5 | This repository contains examples and explanations of various Spring Boot annotations. Spring Boot is a powerful framework for building Java applications with minimal configuration. Annotations play a crucial role in configuring and customizing Spring Boot applications. 6 | 7 | ## Table of Contents 8 | 9 | 1. [Introduction](#introduction) 10 | 2. [Getting Started](#getting-started) 11 | 3. [Annotations](#annotations) 12 | - 3.1 [**@RestController**](#restcontroller) 13 | - 3.2 [**@RequestMapping**](#requestmapping) 14 | - 3.3 [**@Autowired**](#autowired) 15 | - 3.4 [**@Service**](#service) 16 | - 3.5 [**@Repository**](#repository) 17 | - 3.6 [**@Component**](#component) 18 | 4. [Usage](#usage) 19 | 5. [Contributing](#contributing) 20 | ## Introduction 21 | 22 | Spring Boot is an opinionated framework that aims to simplify the development of production-ready applications using the Spring ecosystem. One of the core features of Spring Boot is its extensive use of annotations. These annotations help configure the behavior of various components, simplify dependency injection, and enable features like web service endpoints. 23 | 24 | This repository serves as a reference for developers who want to understand the different annotations provided by Spring Boot and how they can be used in their projects. 25 | 26 | ## Getting Started 27 | 28 | To get started, you need to have Java and Maven installed on your system. Clone this repository to your local machine and import it into your preferred Java IDE. 29 | 30 | ```bash 31 | git clone https://github.com/Shubh2-0/SpringBoot_Annotations.git 32 | ``` 33 | 34 | ## Annotations 35 | 36 | This section covers some of the essential annotations used in Spring Boot applications. 37 | 38 | ### @RestController 39 | 40 | The `@RestController` annotation combines `@Controller` and `@ResponseBody`. It is used to define RESTful web service endpoints that directly return JSON or XML responses. 41 | 42 | ```java 43 | @RestController 44 | public class ExampleController { 45 | // Controller methods... 46 | } 47 | ``` 48 | 49 | ### @RequestMapping 50 | 51 | The `@RequestMapping` annotation maps HTTP requests to specific controller methods. It allows you to define the URL paths and HTTP methods that trigger the corresponding methods. 52 | 53 | ```java 54 | @RestController 55 | @RequestMapping("/api") 56 | public class ExampleController { 57 | @RequestMapping(value = "/hello", method = RequestMethod.GET) 58 | public String sayHello() { 59 | return "Hello, World!"; 60 | } 61 | } 62 | ``` 63 | 64 | ### @Autowired 65 | 66 | The `@Autowired` annotation is used for automatic dependency injection. It allows Spring to automatically wire beans into dependent objects. 67 | 68 | ```java 69 | @Service 70 | public class ExampleService { 71 | // Service methods... 72 | } 73 | 74 | @RestController 75 | public class ExampleController { 76 | private final ExampleService exampleService; 77 | 78 | @Autowired 79 | public ExampleController(ExampleService exampleService) { 80 | this.exampleService = exampleService; 81 | } 82 | 83 | // Controller methods using exampleService... 84 | } 85 | ``` 86 | 87 | ### @Service 88 | 89 | The `@Service` annotation is used to mark a class as a service bean in Spring. Service beans typically hold business logic and are used to perform various operations. 90 | 91 | ```java 92 | @Service 93 | public class ExampleService { 94 | // Service methods... 95 | } 96 | ``` 97 | 98 | ### @Repository 99 | 100 | The `@Repository` annotation is used to indicate that a class is a repository (data access) bean. Repositories are responsible for database operations. 101 | 102 | ```java 103 | @Repository 104 | public class ExampleRepository { 105 | // Repository methods... 106 | } 107 | ``` 108 | 109 | ### @Component 110 | 111 | The `@Component` annotation is a generic stereotype for any Spring-managed component. It indicates that a class is a Spring component and should be auto-detected during classpath scanning. 112 | 113 | ```java 114 | @Component 115 | public class ExampleComponent { 116 | // Component methods... 117 | } 118 | ``` 119 | 120 | ## Usage 121 | 122 | To use this repository, clone it to your local machine and explore the examples provided for each annotation. You can run the Spring Boot application using Maven: 123 | 124 | ```bash 125 | cd SpringBoot_Annotations 126 | mvn spring-boot:run 127 | ``` 128 | 129 | Feel free to modify the examples or add your own annotations to experiment with Spring Boot's capabilities. 130 | 131 | ## Contributing 132 | 133 | Contributions are welcome! If you find any issues or want to add more examples, feel free to open a pull request. 134 | 135 | ## 📬 Contact 136 | 137 | If you want to contact me, you can reach me through below handles. 138 | 139 |

140 | linkedin  141 | mail-me  142 | whatsapp-me  143 |

144 | 145 |
146 | 147 |
148 | 💓 149 | We hope you find this repository helpful in understanding Spring Boot annotations. If you have any questions or need further assistance, please don't hesitate to reach out. Happy coding 150 |
151 | 152 | 153 | 154 | 155 | -------------------------------------------------------------------------------- /SpringBoot_Annotation_Practical_Implementation/mvnw.cmd: -------------------------------------------------------------------------------- 1 | @REM ---------------------------------------------------------------------------- 2 | @REM Licensed to the Apache Software Foundation (ASF) under one 3 | @REM or more contributor license agreements. See the NOTICE file 4 | @REM distributed with this work for additional information 5 | @REM regarding copyright ownership. The ASF licenses this file 6 | @REM to you under the Apache License, Version 2.0 (the 7 | @REM "License"); you may not use this file except in compliance 8 | @REM with the License. You may obtain a copy of the License at 9 | @REM 10 | @REM https://www.apache.org/licenses/LICENSE-2.0 11 | @REM 12 | @REM Unless required by applicable law or agreed to in writing, 13 | @REM software distributed under the License is distributed on an 14 | @REM "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 15 | @REM KIND, either express or implied. See the License for the 16 | @REM specific language governing permissions and limitations 17 | @REM under the License. 18 | @REM ---------------------------------------------------------------------------- 19 | 20 | @REM ---------------------------------------------------------------------------- 21 | @REM Apache Maven Wrapper startup batch script, version 3.2.0 22 | @REM 23 | @REM Required ENV vars: 24 | @REM JAVA_HOME - location of a JDK home dir 25 | @REM 26 | @REM Optional ENV vars 27 | @REM MAVEN_BATCH_ECHO - set to 'on' to enable the echoing of the batch commands 28 | @REM MAVEN_BATCH_PAUSE - set to 'on' to wait for a keystroke before ending 29 | @REM MAVEN_OPTS - parameters passed to the Java VM when running Maven 30 | @REM e.g. to debug Maven itself, use 31 | @REM set MAVEN_OPTS=-Xdebug -Xrunjdwp:transport=dt_socket,server=y,suspend=y,address=8000 32 | @REM MAVEN_SKIP_RC - flag to disable loading of mavenrc files 33 | @REM ---------------------------------------------------------------------------- 34 | 35 | @REM Begin all REM lines with '@' in case MAVEN_BATCH_ECHO is 'on' 36 | @echo off 37 | @REM set title of command window 38 | title %0 39 | @REM enable echoing by setting MAVEN_BATCH_ECHO to 'on' 40 | @if "%MAVEN_BATCH_ECHO%" == "on" echo %MAVEN_BATCH_ECHO% 41 | 42 | @REM set %HOME% to equivalent of $HOME 43 | if "%HOME%" == "" (set "HOME=%HOMEDRIVE%%HOMEPATH%") 44 | 45 | @REM Execute a user defined script before this one 46 | if not "%MAVEN_SKIP_RC%" == "" goto skipRcPre 47 | @REM check for pre script, once with legacy .bat ending and once with .cmd ending 48 | if exist "%USERPROFILE%\mavenrc_pre.bat" call "%USERPROFILE%\mavenrc_pre.bat" %* 49 | if exist "%USERPROFILE%\mavenrc_pre.cmd" call "%USERPROFILE%\mavenrc_pre.cmd" %* 50 | :skipRcPre 51 | 52 | @setlocal 53 | 54 | set ERROR_CODE=0 55 | 56 | @REM To isolate internal variables from possible post scripts, we use another setlocal 57 | @setlocal 58 | 59 | @REM ==== START VALIDATION ==== 60 | if not "%JAVA_HOME%" == "" goto OkJHome 61 | 62 | echo. 63 | echo Error: JAVA_HOME not found in your environment. >&2 64 | echo Please set the JAVA_HOME variable in your environment to match the >&2 65 | echo location of your Java installation. >&2 66 | echo. 67 | goto error 68 | 69 | :OkJHome 70 | if exist "%JAVA_HOME%\bin\java.exe" goto init 71 | 72 | echo. 73 | echo Error: JAVA_HOME is set to an invalid directory. >&2 74 | echo JAVA_HOME = "%JAVA_HOME%" >&2 75 | echo Please set the JAVA_HOME variable in your environment to match the >&2 76 | echo location of your Java installation. >&2 77 | echo. 78 | goto error 79 | 80 | @REM ==== END VALIDATION ==== 81 | 82 | :init 83 | 84 | @REM Find the project base dir, i.e. the directory that contains the folder ".mvn". 85 | @REM Fallback to current working directory if not found. 86 | 87 | set MAVEN_PROJECTBASEDIR=%MAVEN_BASEDIR% 88 | IF NOT "%MAVEN_PROJECTBASEDIR%"=="" goto endDetectBaseDir 89 | 90 | set EXEC_DIR=%CD% 91 | set WDIR=%EXEC_DIR% 92 | :findBaseDir 93 | IF EXIST "%WDIR%"\.mvn goto baseDirFound 94 | cd .. 95 | IF "%WDIR%"=="%CD%" goto baseDirNotFound 96 | set WDIR=%CD% 97 | goto findBaseDir 98 | 99 | :baseDirFound 100 | set MAVEN_PROJECTBASEDIR=%WDIR% 101 | cd "%EXEC_DIR%" 102 | goto endDetectBaseDir 103 | 104 | :baseDirNotFound 105 | set MAVEN_PROJECTBASEDIR=%EXEC_DIR% 106 | cd "%EXEC_DIR%" 107 | 108 | :endDetectBaseDir 109 | 110 | IF NOT EXIST "%MAVEN_PROJECTBASEDIR%\.mvn\jvm.config" goto endReadAdditionalConfig 111 | 112 | @setlocal EnableExtensions EnableDelayedExpansion 113 | for /F "usebackq delims=" %%a in ("%MAVEN_PROJECTBASEDIR%\.mvn\jvm.config") do set JVM_CONFIG_MAVEN_PROPS=!JVM_CONFIG_MAVEN_PROPS! %%a 114 | @endlocal & set JVM_CONFIG_MAVEN_PROPS=%JVM_CONFIG_MAVEN_PROPS% 115 | 116 | :endReadAdditionalConfig 117 | 118 | SET MAVEN_JAVA_EXE="%JAVA_HOME%\bin\java.exe" 119 | set WRAPPER_JAR="%MAVEN_PROJECTBASEDIR%\.mvn\wrapper\maven-wrapper.jar" 120 | set WRAPPER_LAUNCHER=org.apache.maven.wrapper.MavenWrapperMain 121 | 122 | set WRAPPER_URL="https://repo.maven.apache.org/maven2/org/apache/maven/wrapper/maven-wrapper/3.2.0/maven-wrapper-3.2.0.jar" 123 | 124 | FOR /F "usebackq tokens=1,2 delims==" %%A IN ("%MAVEN_PROJECTBASEDIR%\.mvn\wrapper\maven-wrapper.properties") DO ( 125 | IF "%%A"=="wrapperUrl" SET WRAPPER_URL=%%B 126 | ) 127 | 128 | @REM Extension to allow automatically downloading the maven-wrapper.jar from Maven-central 129 | @REM This allows using the maven wrapper in projects that prohibit checking in binary data. 130 | if exist %WRAPPER_JAR% ( 131 | if "%MVNW_VERBOSE%" == "true" ( 132 | echo Found %WRAPPER_JAR% 133 | ) 134 | ) else ( 135 | if not "%MVNW_REPOURL%" == "" ( 136 | SET WRAPPER_URL="%MVNW_REPOURL%/org/apache/maven/wrapper/maven-wrapper/3.2.0/maven-wrapper-3.2.0.jar" 137 | ) 138 | if "%MVNW_VERBOSE%" == "true" ( 139 | echo Couldn't find %WRAPPER_JAR%, downloading it ... 140 | echo Downloading from: %WRAPPER_URL% 141 | ) 142 | 143 | powershell -Command "&{"^ 144 | "$webclient = new-object System.Net.WebClient;"^ 145 | "if (-not ([string]::IsNullOrEmpty('%MVNW_USERNAME%') -and [string]::IsNullOrEmpty('%MVNW_PASSWORD%'))) {"^ 146 | "$webclient.Credentials = new-object System.Net.NetworkCredential('%MVNW_USERNAME%', '%MVNW_PASSWORD%');"^ 147 | "}"^ 148 | "[Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12; $webclient.DownloadFile('%WRAPPER_URL%', '%WRAPPER_JAR%')"^ 149 | "}" 150 | if "%MVNW_VERBOSE%" == "true" ( 151 | echo Finished downloading %WRAPPER_JAR% 152 | ) 153 | ) 154 | @REM End of extension 155 | 156 | @REM If specified, validate the SHA-256 sum of the Maven wrapper jar file 157 | SET WRAPPER_SHA_256_SUM="" 158 | FOR /F "usebackq tokens=1,2 delims==" %%A IN ("%MAVEN_PROJECTBASEDIR%\.mvn\wrapper\maven-wrapper.properties") DO ( 159 | IF "%%A"=="wrapperSha256Sum" SET WRAPPER_SHA_256_SUM=%%B 160 | ) 161 | IF NOT %WRAPPER_SHA_256_SUM%=="" ( 162 | powershell -Command "&{"^ 163 | "$hash = (Get-FileHash \"%WRAPPER_JAR%\" -Algorithm SHA256).Hash.ToLower();"^ 164 | "If('%WRAPPER_SHA_256_SUM%' -ne $hash){"^ 165 | " Write-Output 'Error: Failed to validate Maven wrapper SHA-256, your Maven wrapper might be compromised.';"^ 166 | " Write-Output 'Investigate or delete %WRAPPER_JAR% to attempt a clean download.';"^ 167 | " Write-Output 'If you updated your Maven version, you need to update the specified wrapperSha256Sum property.';"^ 168 | " exit 1;"^ 169 | "}"^ 170 | "}" 171 | if ERRORLEVEL 1 goto error 172 | ) 173 | 174 | @REM Provide a "standardized" way to retrieve the CLI args that will 175 | @REM work with both Windows and non-Windows executions. 176 | set MAVEN_CMD_LINE_ARGS=%* 177 | 178 | %MAVEN_JAVA_EXE% ^ 179 | %JVM_CONFIG_MAVEN_PROPS% ^ 180 | %MAVEN_OPTS% ^ 181 | %MAVEN_DEBUG_OPTS% ^ 182 | -classpath %WRAPPER_JAR% ^ 183 | "-Dmaven.multiModuleProjectDirectory=%MAVEN_PROJECTBASEDIR%" ^ 184 | %WRAPPER_LAUNCHER% %MAVEN_CONFIG% %* 185 | if ERRORLEVEL 1 goto error 186 | goto end 187 | 188 | :error 189 | set ERROR_CODE=1 190 | 191 | :end 192 | @endlocal & set ERROR_CODE=%ERROR_CODE% 193 | 194 | if not "%MAVEN_SKIP_RC%"=="" goto skipRcPost 195 | @REM check for post script, once with legacy .bat ending and once with .cmd ending 196 | if exist "%USERPROFILE%\mavenrc_post.bat" call "%USERPROFILE%\mavenrc_post.bat" 197 | if exist "%USERPROFILE%\mavenrc_post.cmd" call "%USERPROFILE%\mavenrc_post.cmd" 198 | :skipRcPost 199 | 200 | @REM pause the script if MAVEN_BATCH_PAUSE is set to 'on' 201 | if "%MAVEN_BATCH_PAUSE%"=="on" pause 202 | 203 | if "%MAVEN_TERMINATE_CMD%"=="on" exit %ERROR_CODE% 204 | 205 | cmd /C exit /B %ERROR_CODE% 206 | -------------------------------------------------------------------------------- /SpringBoot_Annotation_Practical_Implementation/mvnw: -------------------------------------------------------------------------------- 1 | #!/bin/sh 2 | # ---------------------------------------------------------------------------- 3 | # Licensed to the Apache Software Foundation (ASF) under one 4 | # or more contributor license agreements. See the NOTICE file 5 | # distributed with this work for additional information 6 | # regarding copyright ownership. The ASF licenses this file 7 | # to you under the Apache License, Version 2.0 (the 8 | # "License"); you may not use this file except in compliance 9 | # with the License. You may obtain a copy of the License at 10 | # 11 | # https://www.apache.org/licenses/LICENSE-2.0 12 | # 13 | # Unless required by applicable law or agreed to in writing, 14 | # software distributed under the License is distributed on an 15 | # "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 16 | # KIND, either express or implied. See the License for the 17 | # specific language governing permissions and limitations 18 | # under the License. 19 | # ---------------------------------------------------------------------------- 20 | 21 | # ---------------------------------------------------------------------------- 22 | # Apache Maven Wrapper startup batch script, version 3.2.0 23 | # 24 | # Required ENV vars: 25 | # ------------------ 26 | # JAVA_HOME - location of a JDK home dir 27 | # 28 | # Optional ENV vars 29 | # ----------------- 30 | # MAVEN_OPTS - parameters passed to the Java VM when running Maven 31 | # e.g. to debug Maven itself, use 32 | # set MAVEN_OPTS=-Xdebug -Xrunjdwp:transport=dt_socket,server=y,suspend=y,address=8000 33 | # MAVEN_SKIP_RC - flag to disable loading of mavenrc files 34 | # ---------------------------------------------------------------------------- 35 | 36 | if [ -z "$MAVEN_SKIP_RC" ] ; then 37 | 38 | if [ -f /usr/local/etc/mavenrc ] ; then 39 | . /usr/local/etc/mavenrc 40 | fi 41 | 42 | if [ -f /etc/mavenrc ] ; then 43 | . /etc/mavenrc 44 | fi 45 | 46 | if [ -f "$HOME/.mavenrc" ] ; then 47 | . "$HOME/.mavenrc" 48 | fi 49 | 50 | fi 51 | 52 | # OS specific support. $var _must_ be set to either true or false. 53 | cygwin=false; 54 | darwin=false; 55 | mingw=false 56 | case "$(uname)" in 57 | CYGWIN*) cygwin=true ;; 58 | MINGW*) mingw=true;; 59 | Darwin*) darwin=true 60 | # Use /usr/libexec/java_home if available, otherwise fall back to /Library/Java/Home 61 | # See https://developer.apple.com/library/mac/qa/qa1170/_index.html 62 | if [ -z "$JAVA_HOME" ]; then 63 | if [ -x "/usr/libexec/java_home" ]; then 64 | JAVA_HOME="$(/usr/libexec/java_home)"; export JAVA_HOME 65 | else 66 | JAVA_HOME="/Library/Java/Home"; export JAVA_HOME 67 | fi 68 | fi 69 | ;; 70 | esac 71 | 72 | if [ -z "$JAVA_HOME" ] ; then 73 | if [ -r /etc/gentoo-release ] ; then 74 | JAVA_HOME=$(java-config --jre-home) 75 | fi 76 | fi 77 | 78 | # For Cygwin, ensure paths are in UNIX format before anything is touched 79 | if $cygwin ; then 80 | [ -n "$JAVA_HOME" ] && 81 | JAVA_HOME=$(cygpath --unix "$JAVA_HOME") 82 | [ -n "$CLASSPATH" ] && 83 | CLASSPATH=$(cygpath --path --unix "$CLASSPATH") 84 | fi 85 | 86 | # For Mingw, ensure paths are in UNIX format before anything is touched 87 | if $mingw ; then 88 | [ -n "$JAVA_HOME" ] && [ -d "$JAVA_HOME" ] && 89 | JAVA_HOME="$(cd "$JAVA_HOME" || (echo "cannot cd into $JAVA_HOME."; exit 1); pwd)" 90 | fi 91 | 92 | if [ -z "$JAVA_HOME" ]; then 93 | javaExecutable="$(which javac)" 94 | if [ -n "$javaExecutable" ] && ! [ "$(expr "\"$javaExecutable\"" : '\([^ ]*\)')" = "no" ]; then 95 | # readlink(1) is not available as standard on Solaris 10. 96 | readLink=$(which readlink) 97 | if [ ! "$(expr "$readLink" : '\([^ ]*\)')" = "no" ]; then 98 | if $darwin ; then 99 | javaHome="$(dirname "\"$javaExecutable\"")" 100 | javaExecutable="$(cd "\"$javaHome\"" && pwd -P)/javac" 101 | else 102 | javaExecutable="$(readlink -f "\"$javaExecutable\"")" 103 | fi 104 | javaHome="$(dirname "\"$javaExecutable\"")" 105 | javaHome=$(expr "$javaHome" : '\(.*\)/bin') 106 | JAVA_HOME="$javaHome" 107 | export JAVA_HOME 108 | fi 109 | fi 110 | fi 111 | 112 | if [ -z "$JAVACMD" ] ; then 113 | if [ -n "$JAVA_HOME" ] ; then 114 | if [ -x "$JAVA_HOME/jre/sh/java" ] ; then 115 | # IBM's JDK on AIX uses strange locations for the executables 116 | JAVACMD="$JAVA_HOME/jre/sh/java" 117 | else 118 | JAVACMD="$JAVA_HOME/bin/java" 119 | fi 120 | else 121 | JAVACMD="$(\unset -f command 2>/dev/null; \command -v java)" 122 | fi 123 | fi 124 | 125 | if [ ! -x "$JAVACMD" ] ; then 126 | echo "Error: JAVA_HOME is not defined correctly." >&2 127 | echo " We cannot execute $JAVACMD" >&2 128 | exit 1 129 | fi 130 | 131 | if [ -z "$JAVA_HOME" ] ; then 132 | echo "Warning: JAVA_HOME environment variable is not set." 133 | fi 134 | 135 | # traverses directory structure from process work directory to filesystem root 136 | # first directory with .mvn subdirectory is considered project base directory 137 | find_maven_basedir() { 138 | if [ -z "$1" ] 139 | then 140 | echo "Path not specified to find_maven_basedir" 141 | return 1 142 | fi 143 | 144 | basedir="$1" 145 | wdir="$1" 146 | while [ "$wdir" != '/' ] ; do 147 | if [ -d "$wdir"/.mvn ] ; then 148 | basedir=$wdir 149 | break 150 | fi 151 | # workaround for JBEAP-8937 (on Solaris 10/Sparc) 152 | if [ -d "${wdir}" ]; then 153 | wdir=$(cd "$wdir/.." || exit 1; pwd) 154 | fi 155 | # end of workaround 156 | done 157 | printf '%s' "$(cd "$basedir" || exit 1; pwd)" 158 | } 159 | 160 | # concatenates all lines of a file 161 | concat_lines() { 162 | if [ -f "$1" ]; then 163 | # Remove \r in case we run on Windows within Git Bash 164 | # and check out the repository with auto CRLF management 165 | # enabled. Otherwise, we may read lines that are delimited with 166 | # \r\n and produce $'-Xarg\r' rather than -Xarg due to word 167 | # splitting rules. 168 | tr -s '\r\n' ' ' < "$1" 169 | fi 170 | } 171 | 172 | log() { 173 | if [ "$MVNW_VERBOSE" = true ]; then 174 | printf '%s\n' "$1" 175 | fi 176 | } 177 | 178 | BASE_DIR=$(find_maven_basedir "$(dirname "$0")") 179 | if [ -z "$BASE_DIR" ]; then 180 | exit 1; 181 | fi 182 | 183 | MAVEN_PROJECTBASEDIR=${MAVEN_BASEDIR:-"$BASE_DIR"}; export MAVEN_PROJECTBASEDIR 184 | log "$MAVEN_PROJECTBASEDIR" 185 | 186 | ########################################################################################## 187 | # Extension to allow automatically downloading the maven-wrapper.jar from Maven-central 188 | # This allows using the maven wrapper in projects that prohibit checking in binary data. 189 | ########################################################################################## 190 | wrapperJarPath="$MAVEN_PROJECTBASEDIR/.mvn/wrapper/maven-wrapper.jar" 191 | if [ -r "$wrapperJarPath" ]; then 192 | log "Found $wrapperJarPath" 193 | else 194 | log "Couldn't find $wrapperJarPath, downloading it ..." 195 | 196 | if [ -n "$MVNW_REPOURL" ]; then 197 | wrapperUrl="$MVNW_REPOURL/org/apache/maven/wrapper/maven-wrapper/3.2.0/maven-wrapper-3.2.0.jar" 198 | else 199 | wrapperUrl="https://repo.maven.apache.org/maven2/org/apache/maven/wrapper/maven-wrapper/3.2.0/maven-wrapper-3.2.0.jar" 200 | fi 201 | while IFS="=" read -r key value; do 202 | # Remove '\r' from value to allow usage on windows as IFS does not consider '\r' as a separator ( considers space, tab, new line ('\n'), and custom '=' ) 203 | safeValue=$(echo "$value" | tr -d '\r') 204 | case "$key" in (wrapperUrl) wrapperUrl="$safeValue"; break ;; 205 | esac 206 | done < "$MAVEN_PROJECTBASEDIR/.mvn/wrapper/maven-wrapper.properties" 207 | log "Downloading from: $wrapperUrl" 208 | 209 | if $cygwin; then 210 | wrapperJarPath=$(cygpath --path --windows "$wrapperJarPath") 211 | fi 212 | 213 | if command -v wget > /dev/null; then 214 | log "Found wget ... using wget" 215 | [ "$MVNW_VERBOSE" = true ] && QUIET="" || QUIET="--quiet" 216 | if [ -z "$MVNW_USERNAME" ] || [ -z "$MVNW_PASSWORD" ]; then 217 | wget $QUIET "$wrapperUrl" -O "$wrapperJarPath" || rm -f "$wrapperJarPath" 218 | else 219 | wget $QUIET --http-user="$MVNW_USERNAME" --http-password="$MVNW_PASSWORD" "$wrapperUrl" -O "$wrapperJarPath" || rm -f "$wrapperJarPath" 220 | fi 221 | elif command -v curl > /dev/null; then 222 | log "Found curl ... using curl" 223 | [ "$MVNW_VERBOSE" = true ] && QUIET="" || QUIET="--silent" 224 | if [ -z "$MVNW_USERNAME" ] || [ -z "$MVNW_PASSWORD" ]; then 225 | curl $QUIET -o "$wrapperJarPath" "$wrapperUrl" -f -L || rm -f "$wrapperJarPath" 226 | else 227 | curl $QUIET --user "$MVNW_USERNAME:$MVNW_PASSWORD" -o "$wrapperJarPath" "$wrapperUrl" -f -L || rm -f "$wrapperJarPath" 228 | fi 229 | else 230 | log "Falling back to using Java to download" 231 | javaSource="$MAVEN_PROJECTBASEDIR/.mvn/wrapper/MavenWrapperDownloader.java" 232 | javaClass="$MAVEN_PROJECTBASEDIR/.mvn/wrapper/MavenWrapperDownloader.class" 233 | # For Cygwin, switch paths to Windows format before running javac 234 | if $cygwin; then 235 | javaSource=$(cygpath --path --windows "$javaSource") 236 | javaClass=$(cygpath --path --windows "$javaClass") 237 | fi 238 | if [ -e "$javaSource" ]; then 239 | if [ ! -e "$javaClass" ]; then 240 | log " - Compiling MavenWrapperDownloader.java ..." 241 | ("$JAVA_HOME/bin/javac" "$javaSource") 242 | fi 243 | if [ -e "$javaClass" ]; then 244 | log " - Running MavenWrapperDownloader.java ..." 245 | ("$JAVA_HOME/bin/java" -cp .mvn/wrapper MavenWrapperDownloader "$wrapperUrl" "$wrapperJarPath") || rm -f "$wrapperJarPath" 246 | fi 247 | fi 248 | fi 249 | fi 250 | ########################################################################################## 251 | # End of extension 252 | ########################################################################################## 253 | 254 | # If specified, validate the SHA-256 sum of the Maven wrapper jar file 255 | wrapperSha256Sum="" 256 | while IFS="=" read -r key value; do 257 | case "$key" in (wrapperSha256Sum) wrapperSha256Sum=$value; break ;; 258 | esac 259 | done < "$MAVEN_PROJECTBASEDIR/.mvn/wrapper/maven-wrapper.properties" 260 | if [ -n "$wrapperSha256Sum" ]; then 261 | wrapperSha256Result=false 262 | if command -v sha256sum > /dev/null; then 263 | if echo "$wrapperSha256Sum $wrapperJarPath" | sha256sum -c > /dev/null 2>&1; then 264 | wrapperSha256Result=true 265 | fi 266 | elif command -v shasum > /dev/null; then 267 | if echo "$wrapperSha256Sum $wrapperJarPath" | shasum -a 256 -c > /dev/null 2>&1; then 268 | wrapperSha256Result=true 269 | fi 270 | else 271 | echo "Checksum validation was requested but neither 'sha256sum' or 'shasum' are available." 272 | echo "Please install either command, or disable validation by removing 'wrapperSha256Sum' from your maven-wrapper.properties." 273 | exit 1 274 | fi 275 | if [ $wrapperSha256Result = false ]; then 276 | echo "Error: Failed to validate Maven wrapper SHA-256, your Maven wrapper might be compromised." >&2 277 | echo "Investigate or delete $wrapperJarPath to attempt a clean download." >&2 278 | echo "If you updated your Maven version, you need to update the specified wrapperSha256Sum property." >&2 279 | exit 1 280 | fi 281 | fi 282 | 283 | MAVEN_OPTS="$(concat_lines "$MAVEN_PROJECTBASEDIR/.mvn/jvm.config") $MAVEN_OPTS" 284 | 285 | # For Cygwin, switch paths to Windows format before running java 286 | if $cygwin; then 287 | [ -n "$JAVA_HOME" ] && 288 | JAVA_HOME=$(cygpath --path --windows "$JAVA_HOME") 289 | [ -n "$CLASSPATH" ] && 290 | CLASSPATH=$(cygpath --path --windows "$CLASSPATH") 291 | [ -n "$MAVEN_PROJECTBASEDIR" ] && 292 | MAVEN_PROJECTBASEDIR=$(cygpath --path --windows "$MAVEN_PROJECTBASEDIR") 293 | fi 294 | 295 | # Provide a "standardized" way to retrieve the CLI args that will 296 | # work with both Windows and non-Windows executions. 297 | MAVEN_CMD_LINE_ARGS="$MAVEN_CONFIG $*" 298 | export MAVEN_CMD_LINE_ARGS 299 | 300 | WRAPPER_LAUNCHER=org.apache.maven.wrapper.MavenWrapperMain 301 | 302 | # shellcheck disable=SC2086 # safe args 303 | exec "$JAVACMD" \ 304 | $MAVEN_OPTS \ 305 | $MAVEN_DEBUG_OPTS \ 306 | -classpath "$MAVEN_PROJECTBASEDIR/.mvn/wrapper/maven-wrapper.jar" \ 307 | "-Dmaven.multiModuleProjectDirectory=${MAVEN_PROJECTBASEDIR}" \ 308 | ${WRAPPER_LAUNCHER} $MAVEN_CONFIG "$@" 309 | --------------------------------------------------------------------------------