SpringBoot之使用Druid连接池,SQL监控和spring监控
项目结构
1.引入maven依赖
- <dependencies>
- <dependency>
- <groupId>org.springframework.boot</groupId>
- <artifactId>spring-boot-starter</artifactId>
- </dependency>
- <dependency>
- <groupId>org.springframework.boot</groupId>
- <artifactId>spring-boot-starter-web</artifactId>
- </dependency>
- <dependency>
- <groupId>com.alibaba</groupId>
- <artifactId>druid</artifactId>
- <version>1.1.10</version>
- </dependency>
- <dependency>
- <groupId>mysql</groupId>
- <artifactId>mysql-connector-java</artifactId>
- <scope>runtime</scope>
- </dependency>
- <dependency>
- <groupId>javax.servlet</groupId>
- <artifactId>javax.servlet-api</artifactId>
- <scope>provided</scope>
- </dependency>
- <dependency>
- <groupId>org.mybatis.spring.boot</groupId>
- <artifactId>mybatis-spring-boot-starter</artifactId>
- <version>1.2.2</version>
- </dependency>
- <dependency>
- <groupId>org.springframework.boot</groupId>
- <artifactId>spring-boot-starter-test</artifactId>
- <scope>test</scope>
- <exclusions>
- <exclusion>
- <groupId>org.junit.vintage</groupId>
- <artifactId>junit-vintage-engine</artifactId>
- </exclusion>
- </exclusions>
- </dependency>
2.在application.properties配置文件中加入druid配置
- ### mysql ###
- spring.datasource.url=jdbc:mysql://localhost:3306/lw_test?useUnicode=true&characterEncoding=utf-8&serverTimezone=GMT
- spring.datasource.username=root
- spring.datasource.password=123456
- spring.datasource.driver-class-name=com.mysql.jdbc.Driver
- ### mybatis ###
- mybatis.mapper-locations=classpath:mybatis/*.xml
- ### durid ###
- spring.datasource.type=com.alibaba.druid.pool.DruidDataSource
- # 初始化大小,最小,最大
- spring.datasource.initialSize=5
- spring.datasource.minIdle=5
- spring.datasource.maxActive=20
- # 配置获取连接等待超时的时间
- spring.datasource.maxWait=60000
- # 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
- spring.datasource.timeBetweenEvictionRunsMillis=60000
- # 配置一个连接在池中最小生存的时间,单位是毫秒
- spring.datasource.minEvictableIdleTimeMillis=300000
- # 校验SQL,Oracle配置 spring.datasource.validationQuery=SELECT 1 FROM DUAL,如果不配validationQuery项,则下面三项配置无用
- spring.datasource.validationQuery=SELECT 'x'
- spring.datasource.testWhileIdle=true
- spring.datasource.testOnBorrow=false
- spring.datasource.testOnReturn=false
- # 打开PSCache,并且指定每个连接上PSCache的大小
- spring.datasource.poolPreparedStatements=true
- spring.datasource.maxPoolPreparedStatementPerConnectionSize=20
- # 配置监控统计拦截的filters,去掉后监控界面sql无法统计,'wall'用于防火墙
- spring.datasource.filters=stat,wall,log4j
- # 通过connectProperties属性来打开mergeSql功能;慢SQL记录
- spring.datasource.connectionProperties=druid.stat.mergeSql=true;druid.stat.slowSqlMillis=5000
- # 合并多个DruidDataSource的监控数据
- spring.datasource.useGlobalDataSourceStat=true
- ### log4j ###
- log4j.rootLogger=DEBUG,Console
- log4j.appender.Console=org.apache.log4j.ConsoleAppenderlog4j.appender.Console.layout=org.apache.log4j.PatternLayout
- og4j.appender.Console.layout.ConversionPattern=%d [%t] %-5p [%c] - %m%n
- log4j.logger.org.apache=INFO
3.配置webServlet
- package com.lw.coodydruid.servlet;
- import com.alibaba.druid.support.http.StatViewServlet;
- import javax.servlet.annotation.WebInitParam;
- import javax.servlet.annotation.WebServlet;
- @WebServlet(urlPatterns = "/druid/*",
- initParams = {
- // @WebInitParam(name="allow",value="172.16.10.128,127.0.0.1"),// IP白名单 (没有配置或者为空,则允许所有访问)
- // @WebInitParam(name="deny",value="172.16.10.129"),// IP黑名单 (存在共同时,deny优先于allow)
- @WebInitParam(name = "loginUsername", value = "admin"),// 用户名
- @WebInitParam(name = "loginPassword", value = "123456"),// 密码
- @WebInitParam(name = "resetEnable", value = "false")// 禁用HTML页面上的“Reset All”功能
- })
- public class DruidServlet extends StatViewServlet {
- private static final long serialVersionUID = 1L;
- }
4.配置webFitler
- package com.lw.coodydruid.filter;
- import com.alibaba.druid.support.http.WebStatFilter;
- import javax.servlet.annotation.WebFilter;
- import javax.servlet.annotation.WebInitParam;
- @WebFilter(filterName = "druidWebStatFilter", urlPatterns = "/*",
- initParams = {
- @WebInitParam(name = "exclusions", value = "*.js,*.gif,*.jpg,*.bmp,*.png,*.css,*.ico,/druid/*") // 忽略资源
- })
- public class DruidFilter extends WebStatFilter {
- }
5.在springboot启动类上,加上注解@ServletComponentScan,扫描filter和servlet
- package com.lw.coodydruid;
- import org.springframework.boot.SpringApplication;
- import org.springframework.boot.autoconfigure.SpringBootApplication;
- import org.springframework.boot.web.servlet.ServletComponentScan;
- import org.springframework.context.annotation.ImportResource;
- @SpringBootApplication
- @ServletComponentScan
- @ImportResource(locations = { "classpath:druid-bean.xml" })
- public class CoodyDruidApplication {
- public static void main(String[] args) {
- SpringApplication.run(CoodyDruidApplication.class, args);
- }
- }
6.此处为手动初始化DataSource,也可以采用spring boot自动配置功能
- package com.lw.coodydruid.configuration;
- import com.alibaba.druid.pool.DruidDataSource;
- import org.springframework.beans.factory.annotation.Value;
- import org.springframework.context.annotation.Bean;
- import org.springframework.context.annotation.Primary;
- import org.springframework.stereotype.Component;
- import javax.sql.DataSource;
- import java.sql.SQLException;
- /**
- * @Classname DruidConfigration
- * @Description 手动初始化DataSource
- * @Date 2019/11/5 8:48
- * @Created by lw
- */
- @Component
- public class DruidConfigration {
- @Value("${spring.datasource.url}")
- private String dbUrl;
- @Value("${spring.datasource.username}")
- private String username;
- @Value("${spring.datasource.password}")
- private String password;
- @Value("${spring.datasource.driver-class-name}")
- private String driverClassName;
- @Value("${spring.datasource.initialSize}")
- private int initialSize;
- @Value("${spring.datasource.minIdle}")
- private int minIdle;
- @Value("${spring.datasource.maxActive}")
- private int maxActive;
- @Value("${spring.datasource.maxWait}")
- private int maxWait;
- @Value("${spring.datasource.timeBetweenEvictionRunsMillis}")
- private int timeBetweenEvictionRunsMillis;
- @Value("${spring.datasource.minEvictableIdleTimeMillis}")
- private int minEvictableIdleTimeMillis;
- @Value("${spring.datasource.validationQuery}")
- private String validationQuery;
- @Value("${spring.datasource.testWhileIdle}")
- private boolean testWhileIdle;
- @Value("${spring.datasource.testOnBorrow}")
- private boolean testOnBorrow;
- @Value("${spring.datasource.testOnReturn}")
- private boolean testOnReturn;
- @Value("${spring.datasource.poolPreparedStatements}")
- private boolean poolPreparedStatements;
- @Value("${spring.datasource.maxPoolPreparedStatementPerConnectionSize}")
- private int maxPoolPreparedStatementPerConnectionSize;
- @Value("${spring.datasource.filters}")
- private String filters;
- @Value("${spring.datasource.connectionProperties}")
- private String connectionProperties;
- @Value("${spring.datasource.useGlobalDataSourceStat}")
- private boolean useGlobalDataSourceStat;
- @Bean
- @Primary //在同样的DataSource中,首先使用被标注的DataSource
- public DataSource dataSource() {
- DruidDataSource datasource = new DruidDataSource();
- datasource.setUrl(this.dbUrl);
- datasource.setUsername(username);
- datasource.setPassword(password);
- datasource.setDriverClassName(driverClassName);
- //configuration
- datasource.setInitialSize(initialSize);
- datasource.setMinIdle(minIdle);
- datasource.setMaxActive(maxActive);
- datasource.setMaxWait(maxWait);
- datasource.setTimeBetweenEvictionRunsMillis(timeBetweenEvictionRunsMillis);
- datasource.setMinEvictableIdleTimeMillis(minEvictableIdleTimeMillis);
- datasource.setValidationQuery(validationQuery);
- datasource.setTestWhileIdle(testWhileIdle);
- datasource.setTestOnBorrow(testOnBorrow);
- datasource.setTestOnReturn(testOnReturn);
- datasource.setPoolPreparedStatements(poolPreparedStatements);
- datasource.setMaxPoolPreparedStatementPerConnectionSize(maxPoolPreparedStatementPerConnectionSize);
- datasource.setUseGlobalDataSourceStat(useGlobalDataSourceStat);
- try {
- datasource.setFilters(filters);
- } catch (SQLException e) {
- System.err.println("druid configuration initialization filter: " + e);
- }
- datasource.setConnectionProperties(connectionProperties);
- return datasource;
- }
- }
7.spring监控之方法名正则匹配拦截配置druid-bean.xml
- <?xml version="1.0" encoding="UTF-8"?>
- <beans xmlns="http://www.springframework.org/schema/beans"
- xmlns:aop="http://www.springframework.org/schema/aop" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
- xsi:schemaLocation="
- http://www.springframework.org/schema/beans
- http://www.springframework.org/schema/beans/spring-beans.xsd
- http://www.springframework.org/schema/aop
- http://www.springframework.org/schema/aop/spring-aop.xsd">
- <!-- 配置_Druid和Spring关联监控配置 -->
- <bean id="druid-stat-interceptor"
- class="com.alibaba.druid.support.spring.stat.DruidStatInterceptor"/>
- <!-- 方法名正则匹配拦截配置 -->
- <bean id="druid-stat-pointcut" class="org.springframework.aop.support.JdkRegexpMethodPointcut"
- scope="prototype">
- <property name="patterns">
- <list>
- <value>com.lw.coodydruid.mapper.*</value>
- </list>
- </property>
- </bean>
- <aop:config proxy-target-class="true">
- <aop:advisor advice-ref="druid-stat-interceptor" pointcut-ref="druid-stat-pointcut"/>
- </aop:config>
- </beans>
8.在springboot启动类上,引入配置druid-bean.xml
@ImportResource(locations = { "classpath:druid-bean.xml" })
9.controller类
- package com.lw.coodydruid.controller;
- import com.lw.coodydruid.entity.User;
- import com.lw.coodydruid.mapper.UserMapper;
- import org.springframework.beans.factory.annotation.Autowired;
- import org.springframework.web.bind.annotation.GetMapping;
- import org.springframework.web.bind.annotation.RequestMapping;
- import org.springframework.web.bind.annotation.RestController;
- import java.util.List;
- @RestController
- @RequestMapping("/user")
- public class UserController {
- @Autowired
- private UserMapper userMapper;
- @GetMapping(value = "/get")
- public User get() {
- return userMapper.getById(1);
- }
- @GetMapping(value = "/list")
- public List<User> list() {
- return userMapper.getList();
- }
- }
10.Mapper和mapper xml
- package com.lw.coodydruid.mapper;
- import com.lw.coodydruid.entity.User;
- import org.apache.ibatis.annotations.Mapper;
- import java.util.List;
- @Mapper
- public interface UserMapper {
- public List<User> getList();
- public User getById(int id);
- }
- <?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.lw.coodydruid.mapper.UserMapper">
- <resultMap type="com.lw.coodydruid.entity.User" id="userMap">
- <id column="id" property="id"/>
- <result column="name" property="name"/>
- <result column="sex" property="sex"/>
- <result column="age" property="age"/>
- <result column="address" property="address"/>
- <result column="date_created" property="dateCreated"/>
- </resultMap>
- <select id="getList" resultMap="userMap">
- select * from user
- </select>
- <select id="getById" parameterType="java.lang.Integer" resultMap="userMap">
- select * from user where id=#{id}
- </select>
- </mapper>
11.测试
- 1.启动springboot启动类,在浏览器上输入http://localhost:8080/druid/index.html,进入Druid登录页面
输入用户名和密码,点击Sign in登录
- 2.访问controller中的方法,http://localhost:8080/user/get
- 3.Druid监控页面---SQL监控
- 4.Druid监控页面---spring监控
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