SpringBoot整合Druid資料來源過程詳解
阿新 • • 發佈:2020-01-07
這篇文章主要介紹了SpringBoot整合Druid資料來源過程詳解,文中通過示例程式碼介紹的非常詳細,對大家的學習或者工作具有一定的參考學習價值,需要的朋友可以參考下
1.資料庫結構
2.專案結構
3.pom.xml檔案
<dependencies> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-jdbc</artifactId> </dependency> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <scope>runtime</scope> </dependency> <!--引入druid資料來源 --> <!-- https://mvnrepository.com/artifact/com.alibaba/druid --> <dependency> <groupId>com.alibaba</groupId> <artifactId>druid</artifactId> <version>1.1.8</version> </dependency> <!-- https://mvnrepository.com/artifact/log4j/log4j --> <!-- 如果 不加入這依賴 配置監控統計攔截的filters時 這個會報錯 filters: stat,wall,log4j --> <dependency> <groupId>log4j</groupId> <artifactId>log4j</artifactId> <version>1.2.17</version> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-test</artifactId> <scope>test</scope> </dependency> </dependencies> <build> <plugins> <plugin> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-maven-plugin</artifactId> </plugin> </plugins> </build>
4.application.yml配置檔案
spring: datasource: username: root password: wangqing url: jdbc:mysql://localhost:3306/test?useUnicode=true&characterEncoding=utf-8&serverTimezone=Asia/Shanghai driver-class-name: com.mysql.jdbc.Driver type: com.alibaba.druid.pool.DruidDataSource # 資料來源其他配置 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 # 配置監控統計攔截的filters,去掉後監控介面sql無法統計,'wall'用於防火牆 filters: stat,log4j maxPoolPreparedStatementPerConnectionSize: 20 useGlobalDataSourceStat: true connectionProperties: druid.stat.mergeSql=true;druid.stat.slowSqlMillis=500 # 合併多個DruidDataSource的監控資料 #useGlobalDataSourceStat: true mybatis: # 指定全域性配置檔案位置 #config-location: classpath:mybatis/mybatis-config.xml # 指定sql對映檔案位置 mapper-locations: classpath:mapper/*.xml #如src/main/resources下的mappers檔案下的TUserMapper.xml # schema: # - classpath:sql/department.sql #根據department.sql 的sql語句建立表 # - classpath:sql/employee.sql
5.建立一個DruidConfig的配置類,例項化Druid Datasource
package com.qingfeng.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.Arrays; import java.util.HashMap; import java.util.Map; @Configuration public class DruidConfig { //指定載入appliction.yml檔案裡面的spring.datasource開頭的 // DruidDataSource類裡面的屬性與appliction.yml檔案裡面的spring.datasource開頭的對應對映 @ConfigurationProperties(prefix = "spring.datasource") @Bean public DataSource druid(){ return new DruidDataSource(); } //配置Druid的監控 //1、配置一個管理後臺的Servlet @Bean public ServletRegistrationBean statViewServlet(){ ServletRegistrationBean bean = new ServletRegistrationBean(new StatViewServlet(),"/druid/*"); Map<String,String> initParams = new HashMap<>(); initParams.put("loginUsername","admin"); initParams.put("loginPassword","123456"); initParams.put("allow","");//預設就是允許所有訪問 initParams.put("deny",""); bean.setInitParameters(initParams); return bean; } //2、配置一個web監控的filter @Bean public FilterRegistrationBean webStatFilter(){ FilterRegistrationBean bean = new FilterRegistrationBean(); bean.setFilter(new WebStatFilter()); Map<String,String> initParams = new HashMap<>(); initParams.put("exclusions","*.js,*.css,/druid/*"); bean.setInitParameters(initParams); bean.setUrlPatterns(Arrays.asList("/*")); return bean; } }
6.建立一個UserController類測試
package com.qingfeng.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; import java.util.List; import java.util.Map; @Controller public class UserController { @Autowired JdbcTemplate jdbcTemplate; @ResponseBody @GetMapping("/query") public Map<String,Object> map(){ List<Map<String,Object>> list = jdbcTemplate.queryForList("select * FROM user"); return list.get(0); } }
7.執行專案,通過瀏覽器訪問 http://localhost:8080/query
8.我們DruidConfig類裡配置的下面程式碼可以幫我們實現監控
//配置Druid的監控 //1、配置一個管理後臺的Servlet @Bean public ServletRegistrationBean statViewServlet(){ ServletRegistrationBean bean = new ServletRegistrationBean(new StatViewServlet(),""); bean.setInitParameters(initParams); return bean; }
9.我們啟動專案,開啟網址:http://localhost:8080/druid/login.html 可以通過登入,檢視druid資料來源狀態監控
我們上面設定的是使用者名稱:admin 密碼:123456
以上就是本文的全部內容,希望對大家的學習有所幫助,也希望大家多多支援我們。