- 本地环境
JDK 版本: 1.8.0_202
系统: MacOS Mojave 10.14.4
工具 IDEA 2019.1.2
Github: https://github.com/ilssio/spring-boot-mybatis-druid
- 注意: 解释较少,直接看注释就好,
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>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.1.4.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>io.ilss</groupId>
<artifactId>spring-boot-mybatis-druid</artifactId>
<version>1.0</version>
<name>spring-boot-mybatis-druid</name>
<description>spring-boot-mybatis-druid</description>
<properties>
<java.version>1.8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.mybatis.spring.boot</groupId>
<artifactId>mybatis-spring-boot-starter</artifactId>
<version>2.0.1</version>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<optional>true</optional>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid-spring-boot-starter</artifactId>
<version>1.1.10</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
application.yml
spring:
application:
name: spring-boot-mybatis-druid
datasource:
druid:
url: jdbc:mysql://localhost:3306/test?useSSL=true&characterEncoding=UTF-8
username: root
password: feng1104
# 配置初始化大小(默认0)、最小、最大(默认8)
initial-size: 1
min-idle: 1
max-active: 20
# 配置获取连接等待超时的时间
max-wait: 60000
# 是否缓存preparedStatement,也就是PSCache。PSCache对支持游标的数据库性能提升巨大。 默认为false
pool-prepared-statements: true
# 要启用PSCache,必须配置大于0,当大于0时,poolPreparedStatements自动触发修改为true。
max-open-prepared-statements: 20
# 配置间隔多久才进行一次检测,检测需要关闭的空闲连接,单位是毫秒
time-between-eviction-runs-millis: 60000
# 配置一个连接在池中最小和最大生存的时间,单位是毫秒
min-evictable-idle-time-millis: 300000
max-evictable-idle-time-millis: 900000
# 用来检测连接是否有效的sql,要求是一个查询语句,常用select 'x'。
# 如果validationQuery为null,testOnBorrow、testOnReturn、testWhileIdle都不会起作用。
validation-query: SELECT 1
# 申请连接时执行validationQuery检测连接是否有效 默认为true
test-on-borrow: true
# 归还连接时执行validationQuery检测连接是否有效 默认为false
test-on-return: false
# 申请连接的时候检测,如果空闲时间大于timeBetweenEvictionRunsMillis,执行validationQuery检测连接是否有效。
test-while-idle: true
mybatis:
mapper-locations: classpath:mapper/*.xml
数据库对应类:User
package io.ilss.dataobject;
import lombok.Data;
import org.apache.ibatis.type.Alias;
/**
* @author : feng
* @description: User
* @date : 2019-05-13 11:44
* @version: : 1.0
*/
@Data
public class User {
private Integer id;
private String username;
private String password;
}
DAO层:UserDAO.java 和 UserMapper.xml
- UserDAO.java
package io.ilss.dao;
import io.ilss.dataobject.User;
import org.springframework.stereotype.Repository;
import java.util.List;
/**
* @author : feng
* @description: UserDAO
* @date : 2019-05-13 11:46
* @version: : 1.0
*/
@Repository
public interface UserDAO {
List<User> listAll();
}
- 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="io.ilss.dao.UserDAO">
<select id="listAll" resultType="io.ilss.dataobject.User">
select * from user
</select>
</mapper>
测试接口
package io.ilss.controller;
import com.alibaba.druid.stat.DruidStatManagerFacade;
import io.ilss.dao.UserDAO;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;
/**
* @author : feng
* @description: DruidStatController
* @date : 2019-05-13 11:42
* @version: : 1.0
*/
@RestController
public class TestController {
@Autowired
UserDAO userDAO;
@GetMapping("/druid/stat")
public Object druidStat(){
return DruidStatManagerFacade.getInstance().getDataSourceStatDataList();
}
@GetMapping("/list/user")
public Object listUser() {
return userDAO.listAll();
}
}
Notice:
- 网上有的整合示例,有@Bean 然后 创建Datasource ,实测,使用druid-spring-boot-starter依赖不需要去创建
- 另外datasource配置下 加不加druid都可以。多一层而已。druid对两个都支持。(官方说的)
- 访问
localhost:8080/druid/stat
可以进入Druid Monitor 如下:
Druid Monitor
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