1.自定义方式
1.添加依赖
2.编写配置
3.测试
2.starter方式(推荐)
1.添加依赖
2.编写配置
3.测试
Druid是数据库连接池,它能够提供强大的监控和扩展功能。官方文档
Spring Boot整合第三方技术的两种方式:
自定义
找starter场景
1.自定义方式使用自定义方式整合Druid
1.添加依赖在pom.xml添加相关依赖
<!--数据库相关-->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jdbc</artifactId>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.6</version>
</dependency>
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid</artifactId>
<version>1.2.6</version>
</dependency>
</dependencies>
2.编写配置
application.properties
server.port=8080
spring.datasource.url=jdbc:mysql://localhost:3306/db_springtest?useUnicode=true&characterEncoding=utf8
spring.datasource.username=root
spring.datasource.password=123456
spring.datasource.driver-class-name=com.mysql.jdbc.Driver
配置Druid的监控页功能:
Druid内置提供了一个StatViewServlet用于展示Druid的统计信息。官方文档 - 配置StatViewServlet
这个StatViewServlet的用途包括:
提供监控信息展示的html页面
提供监控信息的JSON API
Druid内置提供一个StatFilter,用于统计监控信息。官方文档 - 配置_StatFilter
WebStatFilter用于采集web-jdbc关联监控的数据,如SQL监控、URI监控。官方文档 - 配置WebStatFilter
Druid提供了WallFilter,它是基于SQL语义分析来实现防御SQL注入攻击的。官方文档 - 配置 wallfilter
DataSourceConfig
package com.limi.springboottest2.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.sql.SQLException;
import java.util.Arrays;
@Configuration
public class DataSourceConfig {
@Bean
@ConfigurationProperties("spring.datasource")//复用配置文件的数据源配置, 这样就不用写代码一个一个set了
public DataSource dataSource() throws SQLException {
DruidDataSource druidDataSource = new DruidDataSource();
//加入监控和防火墙功能功能
druidDataSource.setFilters("stat,wall");
return druidDataSource;
}
/**
* 配置 druid的监控页功能
* @return
*/
@Bean
public ServletRegistrationBean statViewServlet(){
StatViewServlet statViewServlet = new StatViewServlet();
ServletRegistrationBean<StatViewServlet> registrationBean =
new ServletRegistrationBean<>(statViewServlet, "/druid/*");
//监控页账号密码:
registrationBean.addInitParameter("loginUsername","admin");
registrationBean.addInitParameter("loginPassword","123456");
return registrationBean;
}
/**
* WebStatFilter 用于采集web-jdbc关联监控的数据。
*/
@Bean
public FilterRegistrationBean webStatFilter(){
WebStatFilter webStatFilter = new WebStatFilter();
FilterRegistrationBean<WebStatFilter> filterRegistrationBean = new FilterRegistrationBean<>(webStatFilter);
filterRegistrationBean.setUrlPatterns(Arrays.asList("/*"));
filterRegistrationBean.addInitParameter("exclusions","*.js,*.gif,*.jpg,*.png,*.css,*.ico,/druid/*");
return filterRegistrationBean;
}
}
3.测试
HelloController
package com.limi.springboottest2.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;
@Controller
public class HelloController {
@Autowired
private JdbcTemplate jdbcTemplate;
@ResponseBody
@GetMapping("/sql")
public String test1(){
String sql = "select count(*) from t_user";
Long i = jdbcTemplate.queryForObject(sql, Long.class);
return i.toString();
}
}
多次点击刷新进行访问
登录druid后台查看监控信息
账号admin, 密码123456
2.starter方式(推荐)使用场景启动器整合druid, 效果和自定义方式一样, 但更加方便
1.添加依赖在pom.xml添加相关依赖
<!--数据库相关-->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jdbc</artifactId>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.6</version>
</dependency>
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid-spring-boot-starter</artifactId>
<version>1.1.17</version>
</dependency>
pom.xml完整内容如下
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.7.0</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.limi</groupId>
<artifactId>springboot-test2</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>springboot-test2</name>
<description>Demo project for Spring Boot</description>
<properties>
<java.version>1.8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
<scope>runtime</scope>
<optional>true</optional>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<optional>true</optional>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-configuration-processor</artifactId>
<optional>true</optional>
</dependency>
<!--数据库相关-->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jdbc</artifactId>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.6</version>
</dependency>
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid-spring-boot-starter</artifactId>
<version>1.1.17</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
<configuration>
<excludes>
<exclude>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
</exclude>
</excludes>
</configuration>
</plugin>
<!-- 下面插件作用是工程打包时,不将spring-boot-configuration-processor打进包内,让其只在编码的时候有用 -->
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
<configuration>
<excludes>
<exclude>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-configuration-processor</artifactId>
</exclude>
</excludes>
</configuration>
</plugin>
</plugins>
</build>
</project>
2.编写配置
application.properties
3.测试server.port=8080
spring.datasource.url=jdbc:mysql://localhost:3306/db_springtest?useUnicode=true&characterEncoding=utf8
spring.datasource.username=root
spring.datasource.password=123456
spring.datasource.driver-class-name=com.mysql.jdbc.Driver#监控SpringBean
spring.datasource.druid.aop-patterns=com.limi.springboottest2.*
# 底层开启功能,stat(sql监控),wall(防火墙)
spring.datasource.druid.filters=stat,wall# 配置监控页功能
spring.datasource.druid.stat-view-servlet.enabled=true
spring.datasource.druid.stat-view-servlet.login-username=admin
spring.datasource.druid.stat-view-servlet.login-password=123456
spring.datasource.druid.stat-view-servlet.reset-enable=false# 监控web
spring.datasource.druid.web-stat-filter.enabled=true
spring.datasource.druid.web-stat-filter.url-pattern=/*
spring.datasource.druid.web-stat-filter.exclusions='*.js,*.gif,*.jpg,*.png,*.css,*.ico,/druid/*'# 对上面filters里面的stat的详细配置
spring.datasource.druid.filter.stat.slow-sql-millis=1000
spring.datasource.druid.filter.stat.log-slow-sql=true
spring.datasource.druid.filter.stat.enabled=true
spring.datasource.druid.filter.wall.enabled=true
spring.datasource.druid.filter.wall.config.drop-table-allow=false
HelloController
package com.limi.springboottest2.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;
@Controller
public class HelloController {
@Autowired
private JdbcTemplate jdbcTemplate;
@ResponseBody
@GetMapping("/sql")
public String test1(){
String sql = "select count(*) from t_user";
Long i = jdbcTemplate.queryForObject(sql, Long.class);
return i.toString();
}
}
多次点击刷新进行访问
登录druid后台查看监控信息
账号admin, 密码123456
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