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  • springboot之整合druid并配置数据源监控

    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 https://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>2.2.4.RELEASE</version>
            <relativePath/> <!-- lookup parent from repository -->
        </parent>
        <groupId>com.gong</groupId>
        <artifactId>springboot-curd</artifactId>
        <version>0.0.1-SNAPSHOT</version>
        <name>springboot-curd</name>
        <description>Demo project for Spring Boot</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.springframework.boot</groupId>
                <artifactId>spring-boot-starter-thymeleaf</artifactId>
            </dependency>
            <dependency>
                <groupId>mysql</groupId>
                <artifactId>mysql-connector-java</artifactId>
                <version>5.1.41</version>
                <scope>runtime</scope>
            </dependency>
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-data-jdbc</artifactId>
            </dependency>
            <dependency>
                <groupId>com.alibaba</groupId>
                <artifactId>druid</artifactId>
                <version>0.2.23</version>
            </dependency>
            <dependency>
                <groupId>org.webjars</groupId>
                <artifactId>bootstrap</artifactId>
                <version>4.1.2</version>
            </dependency>
            <dependency>
                <groupId>junit</groupId>
                <artifactId>junit</artifactId>
                <version>4.12</version>
                <scope>test</scope>
            </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>
        </dependencies>
    
        <build>
            <plugins>
                <plugin>
                    <groupId>org.springframework.boot</groupId>
                    <artifactId>spring-boot-maven-plugin</artifactId>
                </plugin>
            </plugins>
        </build>
    
    </project>

    这里使用druid的jar,当然springboot也有其自己的druid启动器:

    <dependency>
       <groupId>com.alibaba</groupId>
       <artifactId>druid-spring-boot-starter</artifactId>
       <version>1.1.10</version>
    </dependency>

    首先是application.yml里面的配置:

    spring:
      datasource:
        username: root
        password: 123456
        url: jdbc:mysql://192.168.124.22:3306/jdbc?serverTimezone=UTC
        driver-class-name: com.mysql.jdbc.Driver
        type: com.alibaba.druid.pool.DruidDataSource
        # 数据源其它配置
        initialSize: 5
        minIdle: 5
        maxActive: 20
        maxWait: 60000
        timeBetweenEvictionRunsMillis: 60000
        minEvictableIdleTimeMillis: 300000
        validationQuery: SELECT 1 FROM DUAL
        testWhileIdle: true
        testOnBorrow: false
        testOnReturn: false
        poolPreparedStatements: true
        #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
        filters: stat,wall
        maxPoolPreparedStatementPerConnectionSize: 20
        useGlobalDataSourceStat: true
        connectionProperties: druid.stat.mergeSql=true;druid.stat.slowSqlMillis=500

    我们新建一个config包,用于存放druid相关设置:DruidConfig.java

    package com.gong.springbootjdbc.config;
    
    import com.alibaba.druid.pool.DruidDataSource;
    import com.alibaba.druid.support.http.StatViewServlet;
    import com.alibaba.druid.support.http.WebStatFilter;
    import org.springframework.boot.context.properties.ConfigurationProperties;
    import org.springframework.boot.web.servlet.FilterRegistrationBean;
    import org.springframework.boot.web.servlet.ServletRegistrationBean;
    import org.springframework.context.annotation.Bean;
    import org.springframework.context.annotation.Configuration;
    
    import javax.sql.DataSource;
    import java.util.Arrays;
    import java.util.HashMap;
    import java.util.Map;
    
    @Configuration
    public class DruidConfig {
        //将以spring.datasource前缀的属性都绑定上
        @ConfigurationProperties(prefix = "spring.datasource")
        @Bean
        public DataSource druid(){
           return  new DruidDataSource();
        }
    
        //配置Druid的监控
        //1、配置一个管理后台的Servlet
        @Bean
        public ServletRegistrationBean statViewServlet(){
            ServletRegistrationBean bean = new ServletRegistrationBean(new StatViewServlet(), "/druid/*");
            Map<String,String> initParams = new HashMap<>();
            //后台登录账号和密码
            initParams.put("loginUsername","admin");
            initParams.put("loginPassword","123456");
            initParams.put("allow","");//默认就是允许所有访问
            initParams.put("deny","192.168.15.21");
    
            bean.setInitParameters(initParams);
            return bean;
        }
    
    
        //2、配置一个web监控的filter
        @Bean
        public FilterRegistrationBean webStatFilter(){
            FilterRegistrationBean bean = new FilterRegistrationBean();
            bean.setFilter(new WebStatFilter());
    
            Map<String,String> initParams = new HashMap<>();
            initParams.put("exclusions","*.js,*.css,/druid/*");
    
            bean.setInitParameters(initParams);
            //拦截所有请求
            bean.setUrlPatterns(Arrays.asList("/*"));
    
            return  bean;
        }
    }

    新建一个controller包,用于存放测试请求:

    package com.gong.springbootjdbc.controller;
    
    import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.jdbc.core.JdbcTemplate;
    import org.springframework.stereotype.Controller;
    import org.springframework.web.bind.annotation.RequestMapping;
    import org.springframework.web.bind.annotation.RequestParam;
    import org.springframework.web.bind.annotation.ResponseBody;
    
    import java.util.Arrays;
    import java.util.List;
    import java.util.Map;
    
    @Controller
    public class HelloController {
    
        @Autowired
        JdbcTemplate jdbcTemplate;
    
        @ResponseBody
        @RequestMapping("/query")
        public Map<String,Object> testJdbc(){
            List<Map<String, Object>> list = jdbcTemplate.queryForList("select * from department");
            return list.get(0);
        }
    }

    启动服务器:输入localhost:8080/druid

    输入用户名和密码:admin 123456

    然后我们打开另一个窗口,输入localhost:8080/query

    再去druid后台选中sql监控看看:

    成功监听到了sql语句。 

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  • 原文地址:https://www.cnblogs.com/xiximayou/p/12283501.html
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