SpringBoot详解如何进行整合Druid数据源
目录
- 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
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
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
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