SpringBoot入門之集成Druid的方法示例

更新時(shí)間：2018年07月19日 11:06:03 作者：小崔的筆記本

這篇文章主要介紹了SpringBoot入門之集成Druid的方法示例，小編覺得挺不錯(cuò)的，現(xiàn)在分享給大家，也給大家做個(gè)參考。一起跟隨小編過來看看吧

Druid：為監(jiān)控而生的數(shù)據(jù)庫連接池.這篇先了解下它的簡單使用,下篇嘗試用它做多數(shù)據(jù)源配置。

主要參考:https://github.com/alibaba/druid/wiki/

常見問題https://github.com/alibaba/druid/tree/master/druid-spring-boot-starter

一、引入依賴

這里看其他博客都是引用的Druid,由于是使用springboot集成，這里參考druid官方文檔，用的是druid-spring-boot-starter。

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

二、設(shè)置屬性

這里用的demo還是在上一博客基礎(chǔ)上進(jìn)行的修改,所以已經(jīng)配置上了數(shù)據(jù)庫連接和mybatis。

spring.mvc.view.prefix=/view/

spring.mvc.view.suffix=.jsp
mybatis.type-aliases-package=com.example.model
mybatis.config-location=classpath:mybatis/mybatis-config.xml
mybatis.mapper-locations=classpath:mybatis/mapper/*.xml

#spring.datasource.driverClassName = com.mysql.cj.jdbc.Driver
#spring.datasource.url = jdbc:mysql://localhost:3306/mybatis
spring.datasource.url =jdbc:mysql://127.0.0.1:3306/mybatis?useUnicode=true&characterEncoding=UTF-8&serverTimezone=UTC
spring.datasource.username = root
spring.datasource.password = 123456
#spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver
spring.datasource.type=com.alibaba.druid.pool.DruidDataSource


spring.datasource.druid.max-active=20

spring.datasource.druid.initial-size=1

spring.datasource.druid.max-wait=60000

spring.datasource.druid.pool-prepared-statements=true
spring.datasource.druid.max-pool-prepared-statement-per-connection-size=20
spring.datasource.druid.connection-properties=druid.stat.mergeSql=true;druid.stat.slowSqlMillis=5000
spring.datasource.druid.min-idle=1
spring.datasource.druid.time-between-eviction-runs-millis=60000
spring.datasource.druid.min-evictable-idle-time-millis=300000
spring.datasource.druid.validation-query=select 1 from dual
spring.datasource.druid.test-while-idle=true
spring.datasource.druid.test-on-borrow=true
spring.datasource.druid.test-on-return=true

這里配置與其他有的博客不太一樣，spring.datasource后面多了個(gè)druid，屬性名稱也有一些變化。

三、配置連接池的監(jiān)控和慢sql處理

這里只需要在啟動(dòng)類同級(jí)目錄下增加一個(gè)class類配置即可。這里創(chuàng)建了DruidConfiguration類，這里配置了WebStatFilter配置和StatViewServlet配置.

package com.example.demo;

import org.springframework.boot.web.servlet.FilterRegistrationBean;
import org.springframework.boot.web.servlet.ServletRegistrationBean;
import org.springframework.context.annotation.*;

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

@Configuration
public class DruidConfiguration {

  @Bean
  public ServletRegistrationBean statViewServlet(){
    //創(chuàng)建servlet注冊實(shí)體
    ServletRegistrationBean servletRegistrationBean = new ServletRegistrationBean(new StatViewServlet(),"/druid/*");
    //設(shè)置ip白名單
    servletRegistrationBean.addInitParameter("allow","127.0.0.1");
    //設(shè)置ip黑名單，如果allow與deny共同存在時(shí),deny優(yōu)先于allow
    servletRegistrationBean.addInitParameter("deny","192.168.0.19");
    //設(shè)置控制臺(tái)管理用戶
    servletRegistrationBean.addInitParameter("loginUsername","druid");
    servletRegistrationBean.addInitParameter("loginPassword","123456");
    //是否可以重置數(shù)據(jù)
    servletRegistrationBean.addInitParameter("resetEnable","false");
    return servletRegistrationBean;
  }

  @Bean
  public FilterRegistrationBean statFilter(){
    //創(chuàng)建過濾器
    FilterRegistrationBean filterRegistrationBean = new FilterRegistrationBean(new WebStatFilter());
    //設(shè)置過濾器過濾路徑
    filterRegistrationBean.addUrlPatterns("/*");
    //忽略過濾的形式
    filterRegistrationBean.addInitParameter("exclusions","*.js,*.gif,*.jpg,*.png,*.css,*.ico,/druid/*");
    return filterRegistrationBean;
  }
}

四、測試

這里先啟動(dòng)應(yīng)用,然后在瀏覽器輸入http://127.0.0.1:8080/druid/index.html，就會(huì)顯示登錄頁面，輸入上面類配置的密碼即可登錄.

然后輸入上一博客顯示用戶列表的url:http://localhost:8080/user/alluser.do，再看到druid頁面，查看SQL監(jiān)控就會(huì)有剛才執(zhí)行的sql信息，URL監(jiān)控和Session監(jiān)控也有對(duì)應(yīng)的信息，由于這沒配置Spring監(jiān)控所以Spring監(jiān)控的信息,對(duì)于Spring監(jiān)控會(huì)在以后補(bǔ)充，下一篇準(zhǔn)備是使用druid配置多數(shù)據(jù)源。