SpringBoot怎么进行整合Druid数据源

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;@Configurationpublic 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;@Controllerpublic 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