增加mybatis样例
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mybatis-test/pom.xml
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71
mybatis-test/pom.xml
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<?xml version="1.0" encoding="UTF-8"?>
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<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
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<modelVersion>4.0.0</modelVersion>
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<groupId>com.example</groupId>
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<artifactId>mybatis-test</artifactId>
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<version>0.0.1-SNAPSHOT</version>
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<packaging>jar</packaging>
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<name>mybatis-test</name>
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<description>Demo project for Spring Boot</description>
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<parent>
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<groupId>org.springframework.boot</groupId>
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<artifactId>spring-boot-starter-parent</artifactId>
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<version>2.0.3.RELEASE</version>
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<relativePath/> <!-- lookup parent from repository -->
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</parent>
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<properties>
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<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
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<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
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<java.version>1.8</java.version>
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</properties>
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<dependencies>
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<dependency>
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<groupId>org.springframework.boot</groupId>
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<artifactId>spring-boot-starter-web</artifactId>
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</dependency>
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<dependency>
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<groupId>mysql</groupId>
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<artifactId>mysql-connector-java</artifactId>
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<scope>runtime</scope>
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</dependency>
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<dependency>
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<groupId>org.mybatis.spring.boot</groupId>
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<artifactId>mybatis-spring-boot-starter</artifactId>
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<version>1.3.2</version>
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</dependency>
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<!--ali连接池依赖-->
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<dependency>
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<groupId>com.alibaba</groupId>
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<artifactId>druid-spring-boot-starter</artifactId>
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<version>1.1.9</version>
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</dependency>
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<!--分页依赖-->
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<dependency>
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<groupId>com.github.pagehelper</groupId>
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<artifactId>pagehelper-spring-boot-starter</artifactId>
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<version>1.2.5</version>
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</dependency>
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<dependency>
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<groupId>org.springframework.boot</groupId>
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<artifactId>spring-boot-starter-test</artifactId>
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<scope>test</scope>
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</dependency>
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</dependencies>
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<build>
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<plugins>
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<plugin>
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<groupId>org.springframework.boot</groupId>
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<artifactId>spring-boot-maven-plugin</artifactId>
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</plugin>
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</plugins>
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</build>
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</project>
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package com.example.mybatistest;
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import org.mybatis.spring.annotation.MapperScan;
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import org.springframework.boot.SpringApplication;
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import org.springframework.boot.autoconfigure.SpringBootApplication;
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@SpringBootApplication
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@MapperScan("com.example.mybatistest.dao")
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public class MybatisTestApplication {
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public static void main(String[] args) {
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SpringApplication.run(MybatisTestApplication.class, args);
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}
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}
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package com.example.mybatistest.controller;
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import com.example.mybatistest.entity.User;
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import com.example.mybatistest.service.UserService;
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import org.springframework.beans.factory.annotation.Autowired;
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import org.springframework.web.bind.annotation.*;
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import java.util.List;
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/**
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* Created with IntelliJ IDEA.
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* Description:
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* User: ${fxb}
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* Email: fanxb.tl@gmail.com
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* Date: 2018-07-30
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*/
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@RestController
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public class UserController {
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@Autowired
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private UserService userService;
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@GetMapping("/user/{userId}")
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public User getUser(@PathVariable String userId){
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return userService.getByUserId(userId);
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}
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@GetMapping("/user")
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public List<User> getAll(){
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return userService.getAll();
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}
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@GetMapping("/user/page/{pageNum}")
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public Object getPage(@PathVariable int pageNum,
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@RequestParam(name = "pageSize",required = false,defaultValue = "10") int pageSize){
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return userService.getAll(pageNum,pageSize);
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}
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@PostMapping("/user")
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public Object addOne(User user){
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userService.insert(user);
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return user;
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}
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}
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package com.example.mybatistest.dao;
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import com.example.mybatistest.entity.User;
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import org.apache.ibatis.annotations.Insert;
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import org.apache.ibatis.annotations.Options;
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import org.apache.ibatis.annotations.Select;
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import java.util.List;
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/**
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* Created with IntelliJ IDEA.
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* Description:
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* User: ${fxb}
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* Email: fanxb.tl@gmail.com
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* Date: 2018-07-30
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*/
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public interface UserDao {
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//插入用户
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@Insert("insert into user(name,age,password) value(#{name},#{age},#{password})")
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@Options(useGeneratedKeys=true,keyColumn="id",keyProperty="id")
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int insert(User user);
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//根据id查询
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@Select("select * from user where id=#{id}")
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User selectById(String id);
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//查询所有
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@Select("select * from user")
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List<User> selectAll();
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}
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package com.example.mybatistest.entity;
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/**
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* Created with IntelliJ IDEA.
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* Description:
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* User: ${fxb}
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* Email: fanxb.tl@gmail.com
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* Date: 2018-07-30
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*/
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public class User {
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private int id;
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private String name;
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private int age;
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private String password;
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public User(int id, String name, int age, String password) {
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this.id = id;
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this.name = name;
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this.age = age;
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this.password = password;
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}
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public User(){}
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public int getId() {
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return id;
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}
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public void setId(int id) {
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this.id = id;
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}
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public String getName() {
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return name;
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}
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public void setName(String name) {
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this.name = name;
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}
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public int getAge() {
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return age;
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}
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public void setAge(int age) {
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this.age = age;
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}
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public String getPassword() {
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return password;
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}
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public void setPassword(String password) {
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this.password = password;
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}
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}
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package com.example.mybatistest.service;
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import com.example.mybatistest.dao.UserDao;
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import com.example.mybatistest.entity.User;
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import com.github.pagehelper.PageHelper;
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import com.github.pagehelper.PageInfo;
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import org.springframework.beans.factory.annotation.Autowired;
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import org.springframework.stereotype.Component;
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import java.util.List;
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/**
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* Created with IntelliJ IDEA.
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* Description:
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* User: ${fxb}
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* Email: fanxb.tl@gmail.com
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* Date: 2018-07-30
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*/
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@Component
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public class UserService {
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@Autowired
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private UserDao userDao;
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public User getByUserId(String id){
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return userDao.selectById(id);
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}
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//获取全部用户
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public List<User> getAll(){
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return userDao.selectAll();
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}
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//测试分页
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public PageInfo<User> getAll(int pageNum,int pageSize){
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PageHelper.startPage(pageNum,pageSize);
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List<User> users = userDao.selectAll();
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System.out.println(users.size());
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PageInfo<User> result = new PageInfo<>(users);
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return result;
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}
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public int insert(User user){
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return userDao.insert(user);
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}
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}
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46
mybatis-test/src/main/resources/application.yml
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46
mybatis-test/src/main/resources/application.yml
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mybatis:
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#对应实体类路径
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type-aliases-package: com.example.mybatistest.entity
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#对应mapper映射文件路径
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# mapper-locations: classpath:mapper/*.xml
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#pagehelper配置
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pagehelper:
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helper-dialect: mysql
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reasonable: true
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support-methods-arguments: true
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params: count=countSql
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returnPageInfo: check
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server:
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port: 8081
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spring:
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datasource:
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name: mysqlTest
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type: com.alibaba.druid.pool.DruidDataSource
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#druid相关配置
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druid:
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#监控拦截统计的filters
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filters: stat
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driver-class-name: com.mysql.jdbc.Driver
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url: jdbc:mysql://localhost:3306/test?useUnicode=true&characterEncoding=utf-8&useSSL=true
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username: root
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password: 123456
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#配置初始化大小，最小，最大
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initial-size: 1
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min-idle: 1
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max-active: 20
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#获取连接等待超时时间
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max-wait: 6000
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#间隔多久检测一次需要关闭的空闲连接
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time-between-eviction-runs-millis: 60000
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#一个连接在池中的最小生存时间
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min-evictable-idle-time-millis: 300000
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#打开PSCache，并指定每个连接上PSCache的大小。oracle设置为true，mysql设置为false。分库分表设置较多推荐设置
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pool-prepared-statements: false
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max-pool-prepared-statement-per-connection-size: 20
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http:
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encoding:
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charset: utf-8
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enabled: true
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41
mybatis-test/src/main/resources/mapper/UserMapper.xml
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41
mybatis-test/src/main/resources/mapper/UserMapper.xml
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<?xml version="1.0" encoding="utf-8" ?>
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<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd" >
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<mapper namespace="com.example.mybatistest.dao.UserDao">
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<sql id="BASE_TABLE">
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user
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</sql>
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<sql id="BASE_COLUMN">
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id,name,age,password
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</sql>
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<insert id="insert" parameterType="com.example.mybatistest.entity.User" useGeneratedKeys="true" keyProperty="id">
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INSERT INTO <include refid="BASE_TABLE"/>
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<trim prefix="(" suffix=")" suffixOverrides=",">
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name,password,
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<if test="age!=null">
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age
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</if>
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</trim>
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<trim prefix=" VALUE(" suffix=")" suffixOverrides=",">
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#{name,jdbcType=VARCHAR},#{password},
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<if test="age!=null">
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#{age}
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</if>
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</trim>
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</insert>
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<select id="selectById" resultType="com.example.mybatistest.entity.User">
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select
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<include refid="BASE_COLUMN"/>
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from
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<include refid="BASE_TABLE"/>
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where id=#{id}
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</select>
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<select id="selectAll" resultType="com.example.mybatistest.entity.User">
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select
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<include refid="BASE_COLUMN"/>
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from
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<include refid="BASE_TABLE"/>
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</select>
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</mapper>
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package com.example.mybatistest;
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import org.junit.Test;
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import org.junit.runner.RunWith;
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import org.springframework.boot.test.context.SpringBootTest;
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import org.springframework.test.context.junit4.SpringRunner;
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@RunWith(SpringRunner.class)
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@SpringBootTest
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public class MybatisTestApplicationTests {
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@Test
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public void contextLoads() {
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}
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}
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