整合Druid数据源

整合Druid数据源

1. 导入依赖
2. 配置yml文件
3. 编写DruidConfig.java配置类

------依赖

<!-- mysql驱动 -->
    <dependency>
        <groupId>mysql</groupId>
        <artifactId>mysql-connector-java</artifactId>
        <version>5.1.46</version>
    </dependency>

<!-- Druid -->
	<dependency>
	    <groupId>com.alibaba</groupId>
	    <artifactId>druid</artifactId>
	    <version>1.1.11</version>
	</dependency>

<!--log4j-->
        <dependency>
            <groupId>log4j</groupId>
            <artifactId>log4j</artifactId>
            <version>1.2.17</version>
        </dependency>

配置yml文件

spring:
	datasource:
	    driver-class-name: com.mysql.jdbc.Driver
	    url: jdbc:mysql://地址:3306/数据库名?useUnicode=true&characterEncoding=utf8
	    username: 账号
	    password: 密码
	    type: com.alibaba.druid.pool.DruidDataSource
	    # 数据源其他配置
	    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,log4j
	    maxPoolPreparedStatementPerConnectionSize: 20
	    useGlobalDataSourceStat: true
	    connectionProperties: druid.stat.mergeSql=true;druid.stat.slowSqlMillis=500

编写DruidConfig.java配置类

package com.config;

import java.util.Arrays;
import java.util.HashMap;
import java.util.Map;

import javax.sql.DataSource;

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 com.alibaba.druid.pool.DruidDataSource;
import com.alibaba.druid.support.http.StatViewServlet;
import com.alibaba.druid.support.http.WebStatFilter;

/**
 * @email [e-mail]
 * @author:刘俊秦
 * @date: 2018/10/4 0004
 * @time: 下午 8:23
 */

@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");
        //默认就是允许所有访问
        initParams.put("allow", "");
        initParams.put("deny", "");

        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;
    }

}