Spring Boot integrated SPRING-BOOT-STARTER-DATA-JPA environment setup

1. Create a Spring boot project

2. Save Wait Build complete

3, add SPRING-BOOT-STARTER-DATA-JPA, Memory database dependency package Hsqldb

        <!--Add Data JPA dependency--        <dependency>            <groupId>org.springframework.boot</groupId>            <artifactId>spring-boot-starter-data-jpa</artifactId>        </dependency>        < dependency>            <groupId>org.hsqldb</groupId>            <artifactId>hsqldb</artifactId>            <scope>runtime</scope>        </dependency>

Pom.xml

<?xml version= "1.0" encoding= "UTF-8"? ><project xmlns= "http://maven.apache.org/POM/4.0.0" xmlns:xsi= "http ://www.w3.org/2001/XMLSchema-instance "xsi:schemalocation= "http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd" > <modelversion>4.0.0 </modelVersion> <groupId>com.kevin</groupId> <artifactId>boot</artifactId> <vers ion>0.0.1-snapshot</version> <packaging>jar</packaging> <name>boot</name> <de Scription>demo Project forSpring Boot</description> <!--Spring-boot-starter-inherit from the parent project to obtain a reasonable default value. The parent project provides the following features: Java1. 8 as the default compiler level. UTF-8 Source code. A dependency Management section that initiates dependencies from spring to inherit the Pom, managing a publicly dependent version. This dependency management allows you to ignore these dependencies when you use them in your own pom<version>tags.   Smart resource filtering.   Smart plugin configuration (exec plugin, git commit ID and shadow). Smart resource filtering application.properties and application.yml include profile-specific files such as application-dev.properties and Application-dev.yml)-<parent> &LT;GROUPID&GT;ORG.SPRINGFRAMEWORK.BOOT&LT;/GROUPID&G        T        <artifactId>spring-boot-starter-parent</artifactId> <version>2.0.2.RELEASE</version> <relativePath/> <!--lookup parent from repository to </parent> <properties> &LT;PR Oject.build.sourceencoding>utf-8</project.build.sourceencoding> <project.reporting.outputencoding >UTF-8</project.reporting.outputEncoding> <java.version>1.8</java.version> </properties&    Gt            <dependencies> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> <!--Add Data JPA dependency--&        Gt <dependency> <groupId>org.springframework.boot</groupId> <artifactid>spring- BoOt-starter-data-jpa</artifactid> </dependency> <dependency> <groupid>org. Hsqldb</groupid> <artifactId>hsqldb</artifactId> <scope>runtime</scope&gt        ;            </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-test</artifactId> <scope>test</scope> &LT;/DEP endency> </dependencies> <build> <plugins> <plugin> < Groupid>org.springframework.boot</groupid> <artifactid>spring-boot-maven-plugin</artifact id> </plugin> </plugins> </build></project>

4. Project Structure Chart

5. Related Documents

Applicationcontext.properties

Spring.jpa.hibernate.ddl-auto = Create-drop

Entity class User.java

 PackageCom.kevin.boot.model;ImportJavax.persistence.Column;Importjavax.persistence.Entity;ImportJavax.persistence.GeneratedValue;Importjavax.persistence.Id;Importjava.io.Serializable;/** * @authorPingan.yang * @program SPRINGBOOTJPA * @description * @create 2018-05-29 19:10*/@Entity Public classUserImplementsSerializable {@Id @GeneratedValuePrivate intID; @Column (Nullable=false)    PrivateString name; @Column (Nullable=false)    Private intAge ;  PublicUser () {} PublicUser (String name,intAge ) {         This. Name =name;  This. Age =Age ; }     Public intgetId () {returnID; }     Public voidSetId (intID) { This. ID =ID; }     PublicString GetName () {returnname; }     Public voidsetName (String name) { This. Name =name; }     Public intGetage () {returnAge ; }     Public voidSetage (intAge ) {         This. Age =Age ; }}

Database underlying operations class Userrepository.java

 Package com.kevin.boot.repository; Import Com.kevin.boot.model.User; Import org.springframework.data.jpa.repository.JpaRepository; Import java.util.List;  Public Interface extends Jparepository<user, long> {    User Getuserbyid (int  ID);    List<User> getuserbyname (String name);}

User Business Center Control class

 PackageCom.kevin.boot.controller;ImportCom.kevin.boot.model.User;Importcom.kevin.boot.repository.UserRepository;Importorg.springframework.beans.factory.annotation.Autowired;Importorg.springframework.web.bind.annotation.RequestMapping;ImportOrg.springframework.web.bind.annotation.RequestParam;ImportOrg.springframework.web.bind.annotation.RestController;Importjava.util.List;/** * @authorKevin.yang * @program SPRINGBOOTJPA * @description * @create 2018-05-29 19:11*///Restcontroller = Controller + responsebody@RestController Public classUsercontroller {@AutowiredPrivateuserrepository userrepository; @RequestMapping ("/saveuser")     PublicString Saveuser (@RequestParam ("name") string name, @RequestParam ("age")intAge ) {        Try{User User=NewUser (name, age);        Userrepository.save (user); } Catch(Exception e) {e.printstacktrace (); return"Error"; }        return"Save Success"; } @RequestMapping ("/getuserbyid")     PublicUser Getuserbyid (@RequestParam ("id")intID) {returnUserrepository.getuserbyid (ID); } @RequestMapping ("/getalluser")     PublicList<user>Getalluser () {returnUserrepository.findall (); }}

6. Run the test

Run the spring boot startup class Bootapplication.java

Enter the test address in the browser

1>http://127.0.0.1:8080/saveuser?name=kevin.yang&age=1

2>http://127.0.0.1:8080/getalluser

Test results

1> Test Add user Information

2> Test Query User Information

Spring Boot integrated SPRING-BOOT-STARTER-DATA-JPA environment setup