[SpringBoot]IDEA快速构建SpringBoot应用项目（二）整合Mybatis + Druid

配置 pom.xml

<dependency>
<groupId>org.mybatis.spring.boot</groupId>
<artifactId>mybatis-spring-boot-starter</artifactId>
<version>1.3.1</version>
</dependency>

<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
</dependency>

hljs xml">        <plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
<!-- mybatis generator 自动生成代码插件 -->
<plugin>
<groupId>org.mybatis.generator</groupId>
<artifactId>mybatis-generator-maven-plugin</artifactId>
<version>1.3.2</version>
<configuration>
<configurationFile>${basedir}/src/main/resources/generator/generatorConfig.xml</configurationFile>
<overwrite>true</overwrite>
<verbose>true</verbose>
</configuration>
</plugin>
</plugins>
</build>

配置 application.yml

server:
port: 8081
spring:
datasource:
name: test
url: jdbc:mysql://101.201.117.102:3306/smb-web?useUnicode=true&useSSL=false&characterEncoding=UTF-8
username: root
password: sp6161266
# 使用druid数据源
type: com.alibaba.druid.pool.DruidDataSource
driver-class-name: com.mysql.jdbc.Driver
filters: stat
maxActive: 20
initialSize: 1
maxWait: 60000
minIdle: 1
timeBetweenEvictionRunsMillis: 60000
minEvictableIdleTimeMillis: 300000
validationQuery: select 'x'
testWhileIdle: true
testOnBorrow: false
testOnReturn: false
poolPreparedStatements: true
maxOpenPreparedStatements: 20

mybatis:
mapper-locations: classpath:mapper/*.xml
type-aliases-package: com.shaonaozu.demo100.*.model

项目完整结构

Test表

CREATE TABLE `test` (
`id` int(11) NOT NULL AUTO_INCREMENT,
`title` varchar(255) DEFAULT '',
`content` varchar(255) DEFAULT '',
PRIMARY KEY (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=6 DEFAULT CHARSET=utf8;

Test实体类

package com.shaonaozu.demo100.test.model;

public class Test {
private Integer id;

private String title;

private String content;

public Integer getId() {
return id;
}

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

public String getTitle() {
return title;
}

public void setTitle(String title) {
this.title = title == null ? null : title.trim();
}

public String getContent() {
return content;
}

public void setContent(String content) {
this.content = content == null ? null : content.trim();
}
}

TestMapper.java

package com.shaonaozu.demo100.test.dao;

import com.shaonaozu.demo100.test.model.Test;
import org.springframework.stereotype.Component;

@Component
public interface TestMapper {
int deleteByPrimaryKey(Integer id);

int insert(Test record);

int insertSelective(Test record);

Test selectByPrimaryKey(Integer id);

int updateByPrimaryKeySelective(Test record);

int updateByPrimaryKey(Test record);
}

TestMapper.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.shaonaozu.demo100.test.dao.TestMapper" >
<resultMap id="BaseResultMap" type="com.shaonaozu.demo100.test.model.Test" >
<id column="id" property="id" jdbcType="INTEGER" />
<result column="title" property="title" jdbcType="VARCHAR" />
<result column="content" property="content" jdbcType="VARCHAR" />
</resultMap>
<sql id="Base_Column_List" >
id, title, content
</sql>
<select id="selectByPrimaryKey" resultMap="BaseResultMap" parameterType="java.lang.Integer" >
select
<include refid="Base_Column_List" />
from test
where id = #{id,jdbcType=INTEGER}
</select>
<delete id="deleteByPrimaryKey" parameterType="java.lang.Integer" >
delete from test
where id = #{id,jdbcType=INTEGER}
</delete>
<insert id="insert" parameterType="com.shaonaozu.demo100.test.model.Test" >
insert into test (id, title, content
)
values (#{id,jdbcType=INTEGER}, #{title,jdbcType=VARCHAR}, #{content,jdbcType=VARCHAR}
)
</insert>
<insert id="insertSelective" parameterType="com.shaonaozu.demo100.test.model.Test" >
insert into test
<trim prefix="(" suffix=")" suffixOverrides="," >
<if test="id != null" >
id,
</if>
<if test="title != null" >
title,
</if>
<if test="content != null" >
content,
</if>
</trim>
<trim prefix="values (" suffix=")" suffixOverrides="," >
<if test="id != null" >
#{id,jdbcType=INTEGER},
</if>
<if test="title != null" >
#{title,jdbcType=VARCHAR},
</if>
<if test="content != null" >
#{content,jdbcType=VARCHAR},
</if>
</trim>
</insert>
<update id="updateByPrimaryKeySelective" parameterType="com.shaonaozu.demo100.test.model.Test" >
update test
<set >
<if test="title != null" >
title = #{title,jdbcType=VARCHAR},
</if>
<if test="content != null" >
content = #{content,jdbcType=VARCHAR},
</if>
</set>
where id = #{id,jdbcType=INTEGER}
</update>
<update id="updateByPrimaryKey" parameterType="com.shaonaozu.demo100.test.model.Test" >
update test
set title = #{title,jdbcType=VARCHAR},
content = #{content,jdbcType=VARCHAR}
where id = #{id,jdbcType=INTEGER}
</update>
</mapper>

TestService

package com.shaonaozu.demo100.test.service;

import com.shaonaozu.demo100.base.R;
import com.shaonaozu.demo100.base.enums.REnums;
import com.shaonaozu.demo100.base.exception.RException;
import com.shaonaozu.demo100.test.dao.TestMapper;
import com.shaonaozu.demo100.test.model.Test;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

@Service
public class TestService {

@Autowired
private TestMapper testMapper;

public R test1(Integer id) throws Exception {
R r = new R();
Test test = testMapper.selectByPrimaryKey(id);
if (test == null) {
throw new RException(REnums.NO_DATA);
}
return r.setData(test);
}

public void test2(Test test) throws Exception {
testMapper.insertSelective(test);
}
}

TestServiceTest.java

package com.shaonaozu.demo100.test.service;

import com.shaonaozu.demo100.base.R;
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;

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

@Autowired
private TestService testService;

@Test
public void test1() throws Exception {
R r = testService.test1(3);
System.out.println(r.toString());
// Assert.assertEquals(new Integer(11), new Integer(9));
}

@Test
public void test2() throws Exception {
com.shaonaozu.demo100.test.model.Test test = new com.shaonaozu.demo100.test.model.Test();
test.setTitle("(*^_^*)");
test.setContent("嘻嘻1111111111");
testService.test2(test);

}

}