SpringBoot整合Druid数据库连接池的方法

一，Druid是什么？

Druid是Java语言中最好的数据库连接池。Druid能够提供强大的监控和扩展功能。

二， 在哪里下载druid

maven中央仓库: http://central.maven.org/maven2/com/alibaba/druid/

三， 怎么获取Druid的源码

Druid是一个开源项目，源码托管在github上，源代码仓库地址是 https://github.com/alibaba/druid。同时每次Druid发布正式版本和快照的时候，都会把源码打包，你可以从上面的下载地址中找到相关版本的源码

项目配置

pom.xml

 <dependency>
      <groupId>com.alibaba</groupId>
      <artifactId>druid</artifactId>
      <version>1.1.10</version>
    </dependency>
    <!--自启动Druid管理后台-->
    <dependency>
      <groupId>com.alibaba</groupId>
      <artifactId>druid-spring-boot-starter</artifactId>
      <version>1.1.10</version>
    </dependency>

application.yml

server:
 port: 8080

spring:
 datasource:
  username: root
  password: root
  url: jdbc:mysql://localhost:3306/mybatis?useUnicode=true&characterEncoding=utf-8&useSSL=true&serverTimezone=UTC
  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
  maxPoolPreparedStatementPerConnectionSize: 25
  filters: stat,wall,slf4j
  connectionProperties: druid.stat.mergeSql=true;druid.stat.slowSqlMillis=500
  useGlobalDataSourceStat: true

 cache:
  type: redis
 redis:
  host: 127.0.0.1
  port: 6379
  password:
  pool:
   max-active: 100
   max-idle: 10
   max-wait: 100000
  lettuce:
   shutdown-timeout: 0
  timeout: 5000
  database: 0

thymeleaf:
 cache: false;

mybatis:
 mapper-locations: classpath:zhw.example.zhw.loginModule.loginDao/*.xml

配置JdbcConfig

package zhw.example.zhw.loginModule.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.Collections;
import java.util.HashMap;
import java.util.Map;

@Configuration
public class JdbcConfig {
  @ConfigurationProperties(prefix = "spring.datasource")
  @Bean
  public DataSource dataSource(){
    return new DruidDataSource();
  }

  /**
   * 配置Druid监控
   *
   * @return StatViewServlet
   */
  @Bean
  public ServletRegistrationBean servletRegistrationBean() {
    ServletRegistrationBean<StatViewServlet> bean = new ServletRegistrationBean<>(new StatViewServlet(), "/druid/*");
    Map<String, String> map = new HashMap<>();
    //访问的用户名密码
    map.put(StatViewServlet.PARAM_NAME_USERNAME, "root");
    map.put(StatViewServlet.PARAM_NAME_PASSWORD, "root");
    //允许访问的ip，默认是所有ip
    map.put(StatViewServlet.PARAM_NAME_ALLOW, "");
    //禁止访问的ip
    map.put(StatViewServlet.PARAM_NAME_DENY, "192.168.1.1");
    bean.setInitParameters(map);
    return bean;
  }

  /**
   * 配置一个监控的filter
   *
   * @return WebStatFilter
   */
  @Bean
  public FilterRegistrationBean filterRegistrationBean() {
    FilterRegistrationBean<WebStatFilter> bean = new FilterRegistrationBean<>();
    bean.setFilter(new WebStatFilter());
    Map<String, String> map = new HashMap<>();
    //移除这些监听
    map.put(WebStatFilter.PARAM_NAME_EXCLUSIONS, "*.js,*.css,/druid/*,*.gif,*.jpg,*.png");
    bean.setInitParameters(map);
    //拦截所有请求，全部都要走druid监听
    bean.setUrlPatterns(Collections.singletonList("/*"));
    return bean;
  }

}

测试配置url白名单

如果工程中配置了Apache Shiro，需要在配置类中添加白名单

监控界面

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