Spring整合Durid数据源

Spring整合Durid数据源

一、导入依赖

<!-- Druid数据源 -->
<dependency>
    <groupId>com.alibaba</groupId>
    <artifactId>druid</artifactId>
    <version>1.1.22</version>
</dependency>

二、写applicatio.yml配置Durid数据源

spring:
  datasource:
    username: root
    password: 123456
    #?serverTimezone=UTC解决时区的报错
    url: jdbc:mysql://localhost:3306/first_test?serverTimezone=UTC&useUnicode=true&characterEncoding=utf-8
    driver-class-name: com.mysql.cj.jdbc.Driver
    #指定数据源为Druid
    type: com.alibaba.druid.pool.DruidDataSource
    #Spring Boot默认是不注入这些属性值的，需要自己绑定
    #druid数据源专有配置
    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，stat: 监控统计、Log4j: 日志记录、wall: 防御sql注入
    #如果允许时报错java. lang. ClassNotFoundException: org. apache. log4j. Priority
    #则导入Log4j 依赖即可，Maven地址: https://mvnrepository. com/artifact/log4j/Log4j
    filters: stat,wa1l,1og4j
    maxPoolPreparedStatementPerConnectionSize: 20
    useGlobalDataSourceStat: true
    connectionProperties: druid.stat.mergeSq1=true;druid.stat.slowSqlMi1lis=500

三、自定义配置Durid数据源，扩展更多功能

DruidConfig.java

package com.config;

import com.alibaba.druid.pool.DruidDataSource;
import com.alibaba.druid.support.http.StatViewServlet;
import org.springframework.boot.context.properties.ConfigurationProperties;
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.HashMap;

@Configuration
public class DruidConfig {
    @ConfigurationProperties(prefix = "spring.datasource")
    @Bean
    public DataSource druidDataSource(){
        System.out.println("@DataDruid");
        return new DruidDataSource();
    }

    //开启后台监控
    @Bean
    public ServletRegistrationBean statViewServlet(){
        ServletRegistrationBean<StatViewServlet> bean = new ServletRegistrationBean<>(new StatViewServlet(), "/druid/*");//此处url就是显示后台监控的url

        //要登陆才能看监控
        HashMap<String, String> map = new HashMap<>();
        map.put("loginUsername","wang");
        map.put("loginPassword","123");
        map.put("allow","localhost");//允许本机访问

        bean.setInitParameters(map);

        return bean;
    }
}