SpringBoot当中使用JDBC配置druid数据源

我就是我 2022-10-23 01:48 10阅读 0赞

本篇文章主要讲解SpringBoot当中使用JDBC配置druid数据源，感兴趣的跟小编一起来学习呀！

### 目录 ###

*   *  1、导入依赖
     *  2、application.yml配置
     *  3、DruidConfig配置
     *  4、controller
     *  5、测试

## 1、导入依赖 ##

<dependencies>
    	<dependency>
    		<groupId>org.springframework.boot</groupId>
    		<artifactId>spring-boot-starter-data-jdbc</artifactId>
    	</dependency>
    	<dependency>
    		<groupId>org.springframework.boot</groupId>
    		<artifactId>spring-boot-starter-web</artifactId>
    	</dependency>
    	
    	
    	<dependency>
    		<groupId>com.alibaba</groupId>
    		<artifactId>druid</artifactId>
    		<version>1.1.8</version>
    	</dependency>
    	<dependency>
    	    <groupId>log4j</groupId>
    	    <artifactId>log4j</artifactId>
    	    <version>1.2.17</version>
    	</dependency>
    	<dependency>
    		<groupId>mysql</groupId>
    		<artifactId>mysql-connector-java</artifactId>
    		<scope>runtime</scope>
    	</dependency>
    </dependencies>

## 2、application.yml配置 ##

spring:
      datasource:
        username: root
        password: 123456
        url: jdbc:mysql://192.168.0.104:3306/jdbc
        driver-class-name: com.mysql.cj.jdbc.Driver
        type: com.alibaba.druid.pool.DruidDataSource
    
        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
        filters: stat,wall,log4j
        maxPoolPreparedStatementPerConnectionSize: 20
        useGlobalDataSourceStat: true
        connectionProperties: druid.stat.mergeSql=true;druid.stat.slowSqlMillis=500

## 3、DruidConfig配置 ##

package com.gzl.cn.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 { 
    
        @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<>();
    
            initParams.put("loginUsername","admin");
            initParams.put("loginPassword","123456");
            initParams.put("allow","");//默认就是允许所有访问
            initParams.put("deny","192.168.0.104");
    
            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);
    
            bean.setUrlPatterns(Arrays.asList("/*"));
    
            return  bean;
        }
    }

## 4、controller ##

package com.gzl.cn.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.GetMapping;
    import org.springframework.web.bind.annotation.ResponseBody;
    
    import java.util.List;
    import java.util.Map;
    
    @Controller
    public class TestController { 
    
        @Autowired
        JdbcTemplate jdbcTemplate;
    
    
        @ResponseBody
        @GetMapping("/query")
        public Map<String,Object> map(){ 
            List<Map<String, Object>> list = jdbcTemplate.queryForList("select * FROM department");
            return list.get(0);
        }
    }

## 5、测试 ##

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sql监控平台

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