SpringBoot+MySQL+c3p0项目搭建

参考

http://www.ityouknow.com/springboot/2016/11/06/springboot(%E5%85%AD)-%E5%A6%82%E4%BD%95%E4%BC%98%E9%9B%85%E7%9A%84%E4%BD%BF%E7%94%A8mybatis.html

http://www.jb51.net/article/124077.htm (详解springboot 使用c3p0数据库连接池的方法)

结构

数据库需要自己创建，项目中没有写Service层

CREATE TABLE `users` (
  `id` bigint(20) NOT NULL AUTO_INCREMENT COMMENT '主键id',
  `userName` varchar(32) DEFAULT NULL COMMENT '用户名',
  `passWord` varchar(32) DEFAULT NULL COMMENT '密码',
  `user_sex` varchar(32) DEFAULT NULL,
  `nick_name` varchar(32) DEFAULT NULL,
  PRIMARY KEY (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=31 DEFAULT CHARSET=utf8;

代码

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.jxust</groupId>
    <artifactId>springboot-mybatis-xml</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <packaging>jar</packaging>

    <name>springboot-mybatis-xml</name>
    <description>Demo project for Spring Boot</description>

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>1.5.9.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
        <java.version>1.8</java.version>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>org.mybatis.spring.boot</groupId>
            <artifactId>mybatis-spring-boot-starter</artifactId>
            <version>1.1.1</version>
        </dependency>
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-devtools</artifactId>
            <optional>true</optional>
        </dependency>
        <dependency>
            <groupId>c3p0</groupId>
            <artifactId>c3p0</artifactId>
            <version>0.9.1.2</version>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>


</project>

application.properties

#spring.datasource.driverClassName = com.mysql.jdbc.Driver
#spring.datasource.url = jdbc:mysql://localhost:3306/jpa?useUnicode=true&characterEncoding=utf-8
#spring.datasource.username = root
#spring.datasource.password = root

#mybatis.config-location=classpath:mybatis/mybatis-config.xml
mybatis.mapper-locations=classpath:mybatis/mapper/*.xml

c3p0.jdbcUrl=jdbc:mysql://localhost:3306/jpa?useUnicode=true&characterEncoding=utf-8&useSSL=true
c3p0.user=root
c3p0.password=root
c3p0.driverClass=com.mysql.jdbc.Driver
c3p0.minPoolSize=2
c3p0.maxPoolSize=10
c3p0.maxIdleTime=1800000
c3p0.acquireIncrement=3
c3p0.maxStatements=1000
c3p0.initialPoolSize=3
c3p0.idleConnectionTestPeriod=60
c3p0.acquireRetryAttempts=30
c3p0.acquireRetryDelay=1000
c3p0.breakAfterAcquireFailure=false
c3p0.testConnectionOnCheckout=false

DataSourceConfig.java

package com.jxust;

import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.boot.autoconfigure.jdbc.DataSourceBuilder;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Primary;

import javax.sql.DataSource;

/**
 * \* Created with IntelliJ IDEA.
 * \* User: Peng
 * \* Date: 2018-01-22
 * \* Time: 15:13
 * \* Description:c3p0数据源配置
 * \
 */
@Configuration
public class DataSourceConfig {

    @Bean(name = "dataSource")
    @Qualifier(value = "dataSource")
    @Primary
    @ConfigurationProperties(prefix = "c3p0")
    public DataSource dataSource(){
        return DataSourceBuilder.create().type(com.mchange.v2.c3p0.ComboPooledDataSource.class).build();
    }
}

SpringbootMybatisXmlApplication.java

package com.jxust;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

@SpringBootApplication
public class SpringbootMybatisXmlApplication {

    public static void main(String[] args) {
        SpringApplication.run(SpringbootMybatisXmlApplication.class, args);
    }
}

UserMapper.xml

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd" >
<mapper namespace="com.jxust.mapper.UserMapper" >
    <resultMap id="BaseResultMap" type="com.jxust.entity.UserEntity" >
        <id column="id" property="id" jdbcType="BIGINT" />
        <result column="userName" property="userName" jdbcType="VARCHAR" />
        <result column="passWord" property="passWord" jdbcType="VARCHAR" />
        <result column="user_sex" property="userSex" javaType="com.jxust.enums.UserSexEnum"/>
        <result column="nick_name" property="nickName" jdbcType="VARCHAR" />
    </resultMap>

    <sql id="Base_Column_List" >
        id, userName, passWord, user_sex, nick_name
    </sql>

    <select id="getAll" resultMap="BaseResultMap"  >
       SELECT 
       <include refid="Base_Column_List" />
       FROM users
    </select>

    <select id="getOne" parameterType="java.lang.Long" resultMap="BaseResultMap" >
        SELECT 
       <include refid="Base_Column_List" />
       FROM users
       WHERE id = #{id}
    </select>

    <insert id="insert" parameterType="com.jxust.entity.UserEntity" >
       INSERT INTO 
            users
            (userName,passWord,user_sex) 
        VALUES
            (#{userName}, #{passWord}, #{userSex})
    </insert>

    <update id="update" parameterType="com.jxust.entity.UserEntity" >
       UPDATE 
            users 
       SET 
        <if test="userName != null">userName = #{userName},</if>
        <if test="passWord != null">passWord = #{passWord},</if>
        nick_name = #{nickName}
       WHERE 
            id = #{id}
    </update>

    <delete id="delete" parameterType="java.lang.Long" >
       DELETE FROM
             users 
       WHERE 
             id =#{id}
    </delete>
</mapper>

mybatis-config.xml

mybatis的配置文件，项目中没有使用到

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE configuration PUBLIC "-//mybatis.org//DTD Config 3.0//EN" "http://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>
    <typeAliases>
        <typeAlias alias="Integer" type="java.lang.Integer" />
        <typeAlias alias="Long" type="java.lang.Long" />
        <typeAlias alias="HashMap" type="java.util.HashMap" />
        <typeAlias alias="LinkedHashMap" type="java.util.LinkedHashMap" />
        <typeAlias alias="ArrayList" type="java.util.ArrayList" />
        <typeAlias alias="LinkedList" type="java.util.LinkedList" />
    </typeAliases>
</configuration>

UserEntity.java

package com.jxust.entity;

import com.jxust.enums.UserSexEnum;

import java.io.Serializable;

public class UserEntity implements Serializable {

    private static final long serialVersionUID = 1L;
    private Long id;
    private String userName;
    private String passWord;
    private UserSexEnum userSex;
    private String nickName;

    public UserEntity() {
        super();
    }

    public UserEntity(String userName, String passWord, UserSexEnum userSex) {
        super();
        this.passWord = passWord;
        this.userName = userName;
        this.userSex = userSex;
    }

    public Long getId() {
        return id;
    }

    public void setId(Long id) {
        this.id = id;
    }

    public String getUserName() {
        return userName;
    }

    public void setUserName(String userName) {
        this.userName = userName;
    }

    public String getPassWord() {
        return passWord;
    }

    public void setPassWord(String passWord) {
        this.passWord = passWord;
    }

    public UserSexEnum getUserSex() {
        return userSex;
    }

    public void setUserSex(UserSexEnum userSex) {
        this.userSex = userSex;
    }

    public String getNickName() {
        return nickName;
    }

    public void setNickName(String nickName) {
        this.nickName = nickName;
    }

    @Override
    public String toString() {
        return "UserEntity{" +
                "id=" + id +
                ", userName='" + userName + '\'' +
                ", passWord='" + passWord + '\'' +
                ", userSex=" + userSex +
                ", nickName='" + nickName + '\'' +
                '}';
    }
}

UserSexEnum.java

package com.jxust.enums;

public enum UserSexEnum {
    MAN, WOMAN
}

UserMapper.java

package com.jxust.controller;


import com.jxust.entity.UserEntity;
import com.jxust.mapper.UserMapper;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.*;

import java.util.List;

@RestController
public class UserController {

    @Autowired
    private UserMapper userMapper;

    @GetMapping("/getUsers")
    public List<UserEntity> getUsers() {
        List<UserEntity> users=userMapper.getAll();
        return users;
    }

    @GetMapping("/getUser")
    public UserEntity getUser(Long id) {
        UserEntity user=userMapper.getOne(id);
        return user;
    }

    @PostMapping("/add")
    public void save(UserEntity user) {
        userMapper.insert(user);
    }

    @PutMapping(value="update")
    public void update(UserEntity user) {
        userMapper.update(user);
    }

    @DeleteMapping(value="/delete/{id}")
    public void delete(@PathVariable("id") Long id) {
        userMapper.delete(id);
    }


}

UserController.java

package com.jxust.controller;


import com.jxust.entity.UserEntity;
import com.jxust.mapper.UserMapper;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.*;

import java.util.List;

@RestController
public class UserController {

    @Autowired
    private UserMapper userMapper;

    @GetMapping("/getUsers")
    public List<UserEntity> getUsers() {
        List<UserEntity> users=userMapper.getAll();
        return users;
    }

    @GetMapping("/getUser")
    public UserEntity getUser(Long id) {
        UserEntity user=userMapper.getOne(id);
        return user;
    }

    @PostMapping("/add")
    public void save(UserEntity user) {
        userMapper.insert(user);
    }

    @PutMapping(value="update")
    public void update(UserEntity user) {
        userMapper.update(user);
    }

    @DeleteMapping(value="/delete/{id}")
    public void delete(@PathVariable("id") Long id) {
        userMapper.delete(id);
    }


}

测试类

UserMapperTest.java

package com.jxust.mapper;

import com.jxust.entity.UserEntity;
import com.jxust.enums.UserSexEnum;
import org.junit.Assert;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.test.context.junit4.SpringRunner;

import java.util.List;

@RunWith(SpringRunner.class)
@SpringBootTest
public class UserMapperTest {

    @Autowired
    private UserMapper UserMapper;

    @Test
    public void testInsert() throws Exception {
        UserMapper.insert(new UserEntity("aa", "a123456", UserSexEnum.MAN));
        UserMapper.insert(new UserEntity("bb", "b123456", UserSexEnum.WOMAN));
        UserMapper.insert(new UserEntity("cc", "b123456", UserSexEnum.WOMAN));

        Assert.assertEquals(3, UserMapper.getAll().size());
    }

    @Test
    public void testQuery() throws Exception {
        List<UserEntity> users = UserMapper.getAll();
        if(users==null || users.size()==0){
            System.out.println("is null");
        }else{
            System.out.println(users.toString());
        }
    }


    @Test
    public void testUpdate() throws Exception {
        UserEntity user = UserMapper.getOne(29l);
        System.out.println(user.toString());
        user.setNickName("neo");
        UserMapper.update(user);
        Assert.assertTrue(("neo".equals(UserMapper.getOne(6l).getNickName())));
    }

}