這篇文章主要介紹“SpringBoot中如何整合Druid數(shù)據(jù)源”,在日常操作中,相信很多人在SpringBoot中如何整合Druid數(shù)據(jù)源問題上存在疑惑,小編查閱了各式資料,整理出簡單好用的操作方法,希望對大家解答”SpringBoot中如何整合Druid數(shù)據(jù)源”的疑惑有所幫助!接下來,請跟著小編一起來學習吧!
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1.數(shù)據(jù)庫結(jié)構(gòu)
2.項目結(jié)構(gòu)
3.pom.xml文件
<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數(shù)據(jù)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(jiān)控統(tǒng)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配置文件
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 # 數(shù)據(jù)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(jiān)控統(tǒng)計攔截的filters,去掉后監(jiān)控界面sql無法統(tǒng)計,'wall'用于防火墻 filters: stat,wall,log4j maxPoolPreparedStatementPerConnectionSize: 20 useGlobalDataSourceStat: true connectionProperties: druid.stat.mergeSql=true;druid.stat.slowSqlMillis=500 # 合并多個DruidDataSource的監(jiān)控數(shù)據(jù) #useGlobalDataSourceStat: true mybatis: # 指定全局配置文件位置 #config-location: classpath:mybatis/mybatis-config.xml # 指定sql映射文件位置 mapper-locations: classpath:mapper/*.xml #如src/main/resources下的mappers文件下的TUserMapper.xml # schema: # - classpath:sql/department.sql #根據(jù)department.sql 的sql語句創(chuàng)建表 # - classpath:sql/employee.sql
5.創(chuàng)建一個DruidConfig的配置類,實例化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 { //指定加載appliction.yml文件里面的spring.datasource開頭的 // DruidDataSource類里面的屬性與appliction.yml文件里面的spring.datasource開頭的對應(yīng)映射 @ConfigurationProperties(prefix = "spring.datasource") @Bean public DataSource druid(){ return new DruidDataSource(); } //配置Druid的監(jiān)控 //1、配置一個管理后臺的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","");//默認就是允許所有訪問 initParams.put("deny",""); bean.setInitParameters(initParams); return bean; } //2、配置一個web監(jiān)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.創(chuàng)建一個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.運行項目,通過瀏覽器訪問 http://localhost:8080/query
8.我們DruidConfig類里配置的下面代碼可以幫我們實現(xiàn)監(jiān)控
//配置Druid的監(jiān)控 //1、配置一個管理后臺的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","");//默認就是允許所有訪問 initParams.put("deny",""); bean.setInitParameters(initParams); return bean; }
9.我們啟動項目,打開網(wǎng)址:http://localhost:8080/druid/login.html 可以通過登錄,查看druid數(shù)據(jù)源狀態(tài)監(jiān)控
我們上面設(shè)置的是用戶名:admin 密碼:123456
到此,關(guān)于“SpringBoot中如何整合Druid數(shù)據(jù)源”的學習就結(jié)束了,希望能夠解決大家的疑惑。理論與實踐的搭配能更好的幫助大家學習,快去試試吧!若想繼續(xù)學習更多相關(guān)知識,請繼續(xù)關(guān)注創(chuàng)新互聯(lián)網(wǎng)站,小編會繼續(xù)努力為大家?guī)砀鄬嵱玫奈恼拢?/p>
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