SpringBoot集成阿里巴巴Druid監(jiān)控的示例代碼
druid是阿里巴巴開源的數(shù)據(jù)庫連接池,提供了優(yōu)秀的對數(shù)據(jù)庫操作的監(jiān)控功能,本文要講解一下springboot項目怎么集成druid。
本文在基于jpa的項目下開發(fā),首先在pom文件中額外加入druid依賴,pom文件如下:
<?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 http://maven.apache.org/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion> <groupId>com.dalaoyang</groupId> <artifactId>springboot_druid</artifactId> <version>0.0.1-SNAPSHOT</version> <packaging>jar</packaging> <name>springboot_druid</name> <description>springboot_druid</description> <parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>1.5.12.RELEASE</version> <relativePath/> <!-- lookup parent from repository --> </parent> <properties> <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding> <java.version>1.8</java.version> </properties> <dependencies> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-data-jpa</artifactId> </dependency> <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> </dependency> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <scope>runtime</scope> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-test</artifactId> <scope>test</scope> </dependency> <dependency> <groupId>com.alibaba</groupId> <artifactId>druid</artifactId> <version>1.0.28</version> </dependency> </dependencies> <build> <plugins> <plugin> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-maven-plugin</artifactId> </plugin> </plugins> </build> </project>
application.properties上半段和整合jpa一點沒變,下面加入了一些druid的配置,如果對druid的配置有什么不理解的,可以去網(wǎng)上查一下。(這篇文章我覺得寫的很好,傳送門)
#端口號 server.port=8888 ##validate 加載hibernate時,驗證創(chuàng)建數(shù)據(jù)庫表結(jié)構(gòu) ##create 每次加載hibernate,重新創(chuàng)建數(shù)據(jù)庫表結(jié)構(gòu),這就是導致數(shù)據(jù)庫表數(shù)據(jù)丟失的原因。 ##create-drop 加載hibernate時創(chuàng)建,退出是刪除表結(jié)構(gòu) ##update 加載hibernate自動更新數(shù)據(jù)庫結(jié)構(gòu) ##validate 啟動時驗證表的結(jié)構(gòu),不會創(chuàng)建表 ##none 啟動時不做任何操作 spring.jpa.hibernate.ddl-auto=create ##控制臺打印sql spring.jpa.show-sql=true ##數(shù)據(jù)庫配置 ##數(shù)據(jù)庫地址 spring.datasource.url=jdbc:mysql://localhost:3306/test?characterEncoding=utf8&useSSL=false ##數(shù)據(jù)庫用戶名 spring.datasource.username=root ##數(shù)據(jù)庫密碼 spring.datasource.password=root ##數(shù)據(jù)庫驅(qū)動 spring.datasource.driver-class-name=com.mysql.jdbc.Driver #這里是不同的 #使用druid的話 需要多配置一個屬性spring.datasource.type spring.datasource.type=com.alibaba.druid.pool.DruidDataSource # 連接池的配置信息 # 初始化大小,最小,最大 spring.datasource.initialSize=5 spring.datasource.minIdle=5 spring.datasource.maxActive=20 # 配置獲取連接等待超時的時間 spring.datasource.maxWait=60000 # 配置間隔多久才進行一次檢測,檢測需要關(guān)閉的空閑連接,單位是毫秒 spring.datasource.timeBetweenEvictionRunsMillis=60000 # 配置一個連接在池中最小生存的時間,單位是毫秒 spring.datasource.minEvictableIdleTimeMillis=300000 spring.datasource.validationQuery=SELECT 1 FROM DUAL spring.datasource.testWhileIdle=true spring.datasource.testOnBorrow=false spring.datasource.testOnReturn=false # 打開PSCache,并且指定每個連接上PSCache的大小 spring.datasource.poolPreparedStatements=true spring.datasource.maxPoolPreparedStatementPerConnectionSize=20 # 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 spring.datasource.filters=stat,wall,log4j # 通過connectProperties屬性來打開mergeSql功能;慢SQL記錄
然后在項目中加入DruidConfig,簡單講解一下,這個配置文件主要是加載application.properties的配置,代碼如下:
package com.dalaoyang.config; import java.sql.SQLException; import javax.sql.DataSource; import org.apache.log4j.Logger; import org.springframework.beans.factory.annotation.Value; import org.springframework.context.annotation.Bean; import org.springframework.context.annotation.Configuration; import org.springframework.context.annotation.Primary; import com.alibaba.druid.pool.DruidDataSource; /** * @author dalaoyang * @Description * @project springboot_learn * @package com.dalaoyang.config * @email yangyang@dalaoyang.cn * @date 2018/4/12 */ @Configuration public class DruidConfig { private Logger logger = Logger.getLogger(this.getClass()); @Value("${spring.datasource.url}") private String dbUrl; @Value("${spring.datasource.username}") private String username; @Value("${spring.datasource.password}") private String password; @Value("${spring.datasource.driver-class-name}") private String driverClassName; @Value("${spring.datasource.initialSize}") private int initialSize; @Value("${spring.datasource.minIdle}") private int minIdle; @Value("${spring.datasource.maxActive}") private int maxActive; @Value("${spring.datasource.maxWait}") private int maxWait; @Value("${spring.datasource.timeBetweenEvictionRunsMillis}") private int timeBetweenEvictionRunsMillis; @Value("${spring.datasource.minEvictableIdleTimeMillis}") private int minEvictableIdleTimeMillis; @Value("${spring.datasource.validationQuery}") private String validationQuery; @Value("${spring.datasource.testWhileIdle}") private boolean testWhileIdle; @Value("${spring.datasource.testOnBorrow}") private boolean testOnBorrow; @Value("${spring.datasource.testOnReturn}") private boolean testOnReturn; @Value("${spring.datasource.poolPreparedStatements}") private boolean poolPreparedStatements; @Value("${spring.datasource.maxPoolPreparedStatementPerConnectionSize}") private int maxPoolPreparedStatementPerConnectionSize; @Value("${spring.datasource.filters}") private String filters; @Value("{spring.datasource.connectionProperties}") private String connectionProperties; @Bean @Primary //主數(shù)據(jù)源 public DataSource dataSource(){ DruidDataSource datasource = new DruidDataSource(); datasource.setUrl(this.dbUrl); datasource.setUsername(username); datasource.setPassword(password); datasource.setDriverClassName(driverClassName); //configuration datasource.setInitialSize(initialSize); datasource.setMinIdle(minIdle); datasource.setMaxActive(maxActive); datasource.setMaxWait(maxWait); datasource.setTimeBetweenEvictionRunsMillis(timeBetweenEvictionRunsMillis); datasource.setMinEvictableIdleTimeMillis(minEvictableIdleTimeMillis); datasource.setValidationQuery(validationQuery); datasource.setTestWhileIdle(testWhileIdle); datasource.setTestOnBorrow(testOnBorrow); datasource.setTestOnReturn(testOnReturn); datasource.setPoolPreparedStatements(poolPreparedStatements); datasource.setMaxPoolPreparedStatementPerConnectionSize(maxPoolPreparedStatementPerConnectionSize); try { datasource.setFilters(filters); } catch (SQLException e) { logger.error("druid configuration Exception", e); } datasource.setConnectionProperties(connectionProperties); return datasource; } }
然后創(chuàng)建DruidFilter,代碼如下:
package com.dalaoyang.filter; import javax.servlet.annotation.WebFilter; import javax.servlet.annotation.WebInitParam; import com.alibaba.druid.support.http.WebStatFilter; /** * @author dalaoyang * @Description * @project springboot_learn * @package com.dalaoyang.filter * @email yangyang@dalaoyang.cn * @date 2018/4/12 */ @WebFilter(filterName="druidWebStatFilter",urlPatterns="/*", initParams={ @WebInitParam(name="exclusions",value="*.js,*.gif,*.jpg,*.bmp,*.png,*.css,*.ico,/druid/*")//忽略資源 } ) public class DruidFilter extends WebStatFilter { }
新建DruidServlet,在類上面加注解@WebServlet,其中配置了登錄druid監(jiān)控頁面的賬號密碼,白名單黑名單之類的配置,代碼如下:
package com.dalaoyang.servlet; import javax.servlet.annotation.WebInitParam; import javax.servlet.annotation.WebServlet; import com.alibaba.druid.support.http.StatViewServlet; /** * @author dalaoyang * @Description * @project springboot_learn * @package com.dalaoyang.servlet * @email yangyang@dalaoyang.cn * @date 2018/4/12 */ @WebServlet(urlPatterns="/druid/*", initParams={ @WebInitParam(name="allow",value=""),// IP白名單(沒有配置或者為空,則允許所有訪問) @WebInitParam(name="deny",value=""),// IP黑名單 (deny優(yōu)先于allow) @WebInitParam(name="loginUsername",value="admin"),// 登錄druid管理頁面用戶名 @WebInitParam(name="loginPassword",value="admin")// 登錄druid管理頁面密碼 }) public class DruidServlet extends StatViewServlet { }
然后在啟動類加入注解@ServletComponentScan,讓項目掃描到servlet,代碼如下:
package com.dalaoyang; import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; import org.springframework.boot.web.servlet.ServletComponentScan; @SpringBootApplication // 啟動類必須加入@ServletComponentScan注解,否則無法掃描到servlet @ServletComponentScan public class SpringbootDruidApplication { public static void main(String[] args) { SpringApplication.run(SpringbootDruidApplication.class, args); } }
剩余的就是和整合jpa一樣的entity(實體類),repository(數(shù)據(jù)操作層),controller(測試使用的controller),直接展示代碼。
City
package com.dalaoyang.entity; import javax.persistence.*; /** * @author dalaoyang * @Description * @project springboot_learn * @package com.dalaoyang.Entity * @email 397600342@qq.com * @date 2018/4/7 */ @Entity @Table(name="city") public class City { @Id @GeneratedValue(strategy=GenerationType.AUTO) private int cityId; private String cityName; private String cityIntroduce; public City(int cityId, String cityName, String cityIntroduce) { this.cityId = cityId; this.cityName = cityName; this.cityIntroduce = cityIntroduce; } public City(String cityName, String cityIntroduce) { this.cityName = cityName; this.cityIntroduce = cityIntroduce; } public City() { } public int getCityId() { return cityId; } public void setCityId(int cityId) { this.cityId = cityId; } public String getCityName() { return cityName; } public void setCityName(String cityName) { this.cityName = cityName; } public String getCityIntroduce() { return cityIntroduce; } public void setCityIntroduce(String cityIntroduce) { this.cityIntroduce = cityIntroduce; } }
CityRepository
package com.dalaoyang.repository; import com.dalaoyang.entity.City; import org.springframework.data.jpa.repository.JpaRepository; /** * @author dalaoyang * @Description * @project springboot_learn * @package com.dalaoyang.Repository * @email 397600342@qq.com * @date 2018/4/7 */ public interface CityRepository extends JpaRepository<City,Integer> { }
CityController
package com.dalaoyang.controller; import com.dalaoyang.entity.City; import com.dalaoyang.repository.CityRepository; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.web.bind.annotation.GetMapping; import org.springframework.web.bind.annotation.RestController; /** * @author dalaoyang * @Description * @project springboot_learn * @package com.dalaoyang.controller * @email 397600342@qq.com * @date 2018/4/7 */ @RestController public class CityController { @Autowired private CityRepository cityRepository; //http://localhost:8888/saveCity?cityName=北京&cityIntroduce=中國首都 @GetMapping(value = "saveCity") public String saveCity(String cityName,String cityIntroduce){ City city = new City(cityName,cityIntroduce); cityRepository.save(city); return "success"; } //http://localhost:8888/deleteCity?cityId=2 @GetMapping(value = "deleteCity") public String deleteCity(int cityId){ cityRepository.delete(cityId); return "success"; } //http://localhost:8888/updateCity?cityId=3&cityName=沈陽&cityIntroduce=遼寧省省會 @GetMapping(value = "updateCity") public String updateCity(int cityId,String cityName,String cityIntroduce){ City city = new City(cityId,cityName,cityIntroduce); cityRepository.save(city); return "success"; } //http://localhost:8888/getCityById?cityId=3 @GetMapping(value = "getCityById") public City getCityById(int cityId){ City city = cityRepository.findOne(cityId); return city; } }
然后啟動項目,可以看到控制臺已經(jīng)創(chuàng)建了city表。
然后訪問http://localhost:8888/druid,可以看到如下圖:
輸入賬號密碼admin,admin,如下圖
然后這時我們可以訪問http://localhost:8888/saveCity?cityName=北京&cityIntroduce=中國首都
然后點擊導航上面的SQL監(jiān)控,如下圖,
從上圖可以看到啟動項目創(chuàng)建表的sql已經(jīng)剛剛執(zhí)行的sql。到這里整合已經(jīng)完成了。
源碼下載 :https://gitee.com/dalaoyang/springboot_learn
以上就是本文的全部內(nèi)容,希望對大家的學習有所幫助,也希望大家多多支持腳本之家。
- 使用SpringBoot簡單了解Druid的監(jiān)控系統(tǒng)的配置方法
- SpringBoot配置Druid數(shù)據(jù)監(jiān)控代碼實例
- SpringBoot集成Druid監(jiān)控頁面最小化配置操作
- SpringBoot對Druid配置SQL監(jiān)控功能失效問題及解決方法
- springboot項目中實現(xiàn)訪問druid內(nèi)置監(jiān)控頁面
- SpringBoot集成Druid連接池進行SQL監(jiān)控的問題解析
- SpringBoot整合Druid實現(xiàn)數(shù)據(jù)庫連接池和監(jiān)控
- SpringBoot3整合Druid監(jiān)控功能的項目實踐
- SpringBoot集成Druid實現(xiàn)監(jiān)控功能的示例代碼
- springboot關(guān)閉druid監(jiān)控 druid2改配置文件無效的解決
- Springboot整合Druid實現(xiàn)對訪問的監(jiān)控方式
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