(二十二)SpringBoot之使用Druid连接池以及SQL监控和spring监控
一、引入maven依赖
<dependencies> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-data-jpa</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-devtools</artifactId> <scope>runtime</scope> </dependency> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <scope>runtime</scope> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-tomcat</artifactId> <scope>provided</scope> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-test</artifactId> <scope>test</scope> </dependency> <dependency> <groupId>javax.servlet</groupId> <artifactId>javax.servlet-api</artifactId> <scope>provided</scope> </dependency> <dependency> <groupId>com.alibaba</groupId> <artifactId>druid</artifactId> <version>1.0.18</version> </dependency> <dependency> <groupId>org.mybatis.spring.boot</groupId> <artifactId>mybatis-spring-boot-starter</artifactId> <version>1.2.2</version> </dependency> </dependencies>
二、在application.properties配置文件中加入druid配置
########################## mysql ##########################
spring.datasource.url=jdbc:mysql://localhost/db_boot?useUnicode=true&characterEncoding=utf-8
spring.datasource.username=root
spring.datasource.password=
spring.datasource.driver-class-name=com.mysql.jdbc.Driver
logging.level.com.shyroke.mapper=debug
########################## mybatis ##########################
mybatis.mapper-locations=classpath:mybatis/*.xml
########################## druid配置 ##########################
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
三、配置webServlet
package com.shyroke.servlet; import javax.servlet.annotation.WebInitParam; import javax.servlet.annotation.WebServlet; import com.alibaba.druid.support.http.StatViewServlet; @WebServlet(urlPatterns = "/druid/*", initParams={ // @WebInitParam(name="allow",value="192.168.16.110,127.0.0.1"),// IP白名单 (没有配置或者为空,则允许所有访问) // @WebInitParam(name="deny",value="192.168.16.111"),// 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="admin"),// 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; }
四、配置webFitler
package com.shyroke.filter; import javax.servlet.annotation.WebFilter; import javax.servlet.annotation.WebInitParam; import com.alibaba.druid.support.http.WebStatFilter; @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 { }
五、扫描filter和servlet
@SpringBootApplication @ServletComponentScan
@ImportResource(locations = { "classpath:druid-bean.xml" }) public class SpringbootMybatisDruidApplication { public static void main(String[] args) { SpringApplication.run(SpringbootMybatisDruidApplication.class, args); } }
六、不使用spring boot自动配置功能,手动初始化DataSource
- 描如果不使用代码手动初始化DataSource的话,监控界面的SQL监控会没有数据("是spring boot的bug???")
package com.shyroke.configuration; import java.sql.SQLException; import javax.sql.DataSource; import org.springframework.beans.factory.annotation.Value; import org.springframework.context.annotation.Bean; import org.springframework.context.annotation.Configuration; import org.springframework.context.annotation.Primary; import com.alibaba.druid.pool.DruidDataSource; @Configuration 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 //声明其为Bean实例 @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; } }
- 至此,SQL监控完成
八、spring监控之方法名正则匹配拦截配置
<?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"></bean> <!-- 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.shyroke.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>
九、引入配置
@SpringBootApplication @ServletComponentScan @ImportResource(locations = { "classpath:druid-bean.xml" }) public class SpringbootMybatisDruidApplication { public static void main(String[] args) { SpringApplication.run(SpringbootMybatisDruidApplication.class, args); } }
十、controller
package com.shyroke.controller; import java.util.List; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Controller; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.ResponseBody; import com.shyroke.bean.User; import com.shyroke.mapper.UserMapper; @Controller @RequestMapping(value="/user") public class UserController { @Autowired private UserMapper userMapper; @ResponseBody @RequestMapping(value="/get") public User get() { return userMapper.getOne(1); } @ResponseBody @RequestMapping(value="/list") public List<User> list() { return userMapper.list(); } }
十一、Mapper和mapper xml
package com.shyroke.mapper; import java.util.List; import org.apache.ibatis.annotations.Mapper; import org.springframework.data.jpa.repository.JpaRepository; import org.springframework.stereotype.Repository; import com.shyroke.bean.User; @Mapper public interface UserMapper{ List<User> list(); User getOne(int id); }
- 因为application.properties配置了mybatis.mapper-locations=classpath:mybatis/*.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.shyroke.mapper.UserMapper"> <resultMap type="com.shyroke.bean.User" id="userMap"> <id column="id" property="id" /> <result column="user_name" property="userName" /> <result column="pass_word" property="passWord" /> <result column="date" property="date" /> </resultMap> <select id="list" resultMap="userMap"> select * from users </select> <select id="getOne" parameterType="java.lang.Integer" resultMap="userMap"> select * from users where id=#{id} </select> </mapper>
十二、测试
- 先访问“http://localhost:8080/user/list”,再查看SQL监控和spring监控
- 全部代码在: 码云