資訊專欄INFORMATION COLUMN
摘要：這篇文篇將介紹，如何通過整合數(shù)據(jù)庫鏈接池實(shí)時(shí)監(jiān)控?cái)?shù)據(jù)庫鏈接信息，為優(yōu)化數(shù)據(jù)庫性能提供更好的指導(dǎo)，同樣將通過配置文件形式進(jìn)行配置方便簡(jiǎn)潔。
這篇文篇將介紹，如何通過SpringBoot整合Druid數(shù)據(jù)庫鏈接池,實(shí)時(shí)監(jiān)控?cái)?shù)據(jù)庫鏈接信息，為優(yōu)化數(shù)據(jù)庫性能提供更好的指導(dǎo)，同樣將通過YML配置文件形式進(jìn)行配置,方便簡(jiǎn)潔。
準(zhǔn)備工作環(huán)境：
windows jdk 8 maven 3.0 IDEA創(chuàng)建數(shù)據(jù)庫表
-- ----------------------------
-- Table structure for student
-- ----------------------------
DROP TABLE IF EXISTS `student`;
CREATE TABLE `student` (
`sno` int(15) NOT NULL,
`sname` varchar(50) DEFAULT NULL,
`sex` char(2) DEFAULT NULL,
`dept` varchar(25) DEFAULT NULL,
`birth` date DEFAULT NULL,
`age` int(3) DEFAULT NULL,
PRIMARY KEY (`sno`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;
-- ----------------------------
-- Records of student
-- ----------------------------
INSERT INTO `student` VALUES ("1", "李同學(xué)", "1", "王同學(xué)學(xué)習(xí)成績(jī)很不錯(cuò)", "2010-07-22", "17");
構(gòu)建工程
4.0.0 cn.zhangbox spring-boot-study 1.0-SNAPSHOT cn.zhangbox spring-boot-druid 0.0.1-SNAPSHOT jar spring-boot-druid this project for Spring Boot UTF-8 UTF-8 1.8 3.4 1.10 1.2.0 1.16.14 1.2.41 1.1.2 aliyunmaven http://maven.aliyun.com/nexus/content/groups/public/ org.mybatis.spring.boot mybatis-spring-boot-starter ${mybatis-spring-boot.version} org.springframework.boot spring-boot-starter-web mysql mysql-connector-java runtime org.springframework.boot spring-boot-starter-test test org.apache.commons commons-lang3 ${commons-lang3.version} commons-codec commons-codec ${commons-codec.version} com.alibaba fastjson ${fastjson.version} com.alibaba druid-spring-boot-starter ${druid.version} org.projectlombok lombok ${lombok.version} spring-boot-druid org.apache.maven.plugins maven-compiler-plugin 3.5.1 1.8 1.8 UTF-8 org.apache.maven.plugins maven-surefire-plugin 2.19.1 org.springframework.boot spring-boot-maven-plugin org.springframework springloaded 1.2.4.RELEASE cn.zhangbox.admin.SpringBootDruidApplication -Dfile.encoding=UTF-8 -Xdebug -Xrunjdwp:transport=dt_socket,server=y,suspend=n,address=5005 true true org.springframework.boot spring-boot-maven-plugin cn.zhangbox.admin.SpringBootDruidApplication -Dfile.encoding=UTF-8 -Xdebug -Xrunjdwp:transport=dt_socket,server=y,suspend=n,address=5005 true true
注意：這里引入了lombok插件節(jié)省編寫實(shí)體類時(shí)候?qū)?b>get和set方法,這里在idea中進(jìn)行set和get操作需要下載lombok插件,在設(shè)置頁面的plugins中搜索lombok插件在中央插件庫下載后重啟idea即可,更詳細(xì)的lombok使用教程可以查考:
程序員DD的lombok系列教程:Lombok：讓JAVA代碼更優(yōu)雅
修改YML配置#公共配置
server:
port: 80
tomcat:
uri-encoding: UTF-8
spring:
#激活哪一個(gè)環(huán)境的配置文件
profiles:
active: dev
#連接池配置
datasource:
driver-class-name: com.mysql.jdbc.Driver
# 使用druid數(shù)據(jù)源
type: com.alibaba.druid.pool.DruidDataSource
druid:
# 配置測(cè)試查詢語句
validationQuery: SELECT 1 FROM DUAL
# 初始化大小，最小，最大
initialSize: 10
minIdle: 10
maxActive: 200
# 配置一個(gè)連接在池中最小生存的時(shí)間，單位是毫秒
minEvictableIdleTimeMillis: 180000
testOnBorrow: false
testWhileIdle: true
removeAbandoned: true
removeAbandonedTimeout: 1800
logAbandoned: true
# 打開PSCache，并且指定每個(gè)連接上PSCache的大小
poolPreparedStatements: true
maxOpenPreparedStatements: 100
# 配置監(jiān)控統(tǒng)計(jì)攔截的filters，去掉后監(jiān)控界面sql無法統(tǒng)計(jì)，"wall"用于防火墻
filters: stat,wall,log4j
# 通過connectProperties屬性來打開mergeSql功能；慢SQL記錄
connectionProperties: druid.stat.mergeSql=true;druid.stat.slowSqlMillis=5000
#mybatis
mybatis:
# 實(shí)體類掃描
type-aliases-package: cn.zhangbox.springboot.entity
# 配置映射文件位置
mapper-locations: classpath:mapper/*.xml
# 開啟駝峰匹配
mapUnderscoreToCamelCase: true
---
#開發(fā)環(huán)境配置
server:
#端口
port: 8080
spring:
profiles: dev
# 數(shù)據(jù)源配置
datasource:
url: jdbc:mysql://127.0.0.1:3306/student?useUnicode=true&characterEncoding=utf8&useSSL=false&tinyInt1isBit=true
username: root
password: 123456
#日志
logging:
config: classpath:log/logback.xml
path: log/spring-boot-druid
---
#測(cè)試環(huán)境配置
server:
#端口
port: 80
spring:
profiles: test
# 數(shù)據(jù)源配置
datasource:
url: jdbc:mysql://127.0.0.1:3306/spring-boot-druid?useUnicode=true&characterEncoding=utf8&useSSL=false&tinyInt1isBit=true
username: root
password: 123456
#日志
logging:
config: classpath:log/logback.xml
path: /home/log/spring-boot-druid
---
#生產(chǎn)環(huán)境配置
server:
#端口
port: 8080
spring:
profiles: prod
# 數(shù)據(jù)源配置
datasource:
url: jdbc:mysql://127.0.0.1:3306/spring-boot-druid?useUnicode=true&characterEncoding=utf8&useSSL=false&tinyInt1isBit=true
username: root
password: 123456
#日志
logging:
config: classpath:log/logback.xml
path: /home/log/spring-boot-druid
這里進(jìn)行了mybatis整合,如果不會(huì)mybatis整合可以參考我寫的這篇文章:
SpringBoot非官方教程 | 第六篇：SpringBoot整合mybatis
在工程resources文件夾下新建文件夾log，并在該文件夾下創(chuàng)建logback.xml文件,加入以下配置：
${CONSOLE_LOG_PATTERN} UTF-8 info ${LOG_PATH}/log_debug.log %d{yyyy-MM-dd HH:mm:ss.SSS} [%thread] %-5level %logger{50} - %msg%n UTF-8 ${LOG_PATH}/debug/log-debug-%d{yyyy-MM-dd}.%i.log 500MB 30 debug ACCEPT DENY ${LOG_PATH}/log_info.log %d{yyyy-MM-dd HH:mm:ss.SSS} [%thread] %-5level %logger{50} - %msg%n UTF-8 ${LOG_PATH}/info/log-info-%d{yyyy-MM-dd}.%i.log 500MB 30 info ACCEPT DENY ${LOG_PATH}/log_warn.log %d{yyyy-MM-dd HH:mm:ss.SSS} [%thread] %-5level %logger{50} - %msg%n UTF-8 ${LOG_PATH}/warn/log-warn-%d{yyyy-MM-dd}.%i.log 500MB 30 warn ACCEPT DENY ${LOG_PATH}/log_error.log %d{yyyy-MM-dd HH:mm:ss.SSS} [%thread] %-5level %logger{50} - %msg%n UTF-8 ${LOG_PATH}/error/log-error-%d{yyyy-MM-dd}.%i.log 500MB 30 error ACCEPT DENY
注意：：loback配置文件中
name的屬性值一定要是當(dāng)前工程的java代碼的完整目錄,因?yàn)?b>mybatis打印的日志級(jí)別是debug級(jí)別的，因此需要配置debug級(jí)別日志掃描的目錄。
創(chuàng)建Druid配置類在工程java代碼目錄下創(chuàng)建config的目錄在下面創(chuàng)建DruidDBConfig類加入以下代碼:
@Configuration
public class DruidDBConfig {
@Bean
public ServletRegistrationBean druidServlet() {
ServletRegistrationBean reg = new ServletRegistrationBean();
reg.setServlet(new StatViewServlet());
reg.addUrlMappings("/druid/*");
//設(shè)置控制臺(tái)管理用戶
reg.addInitParameter("loginUsername","root");
reg.addInitParameter("loginPassword","root");
// 禁用HTML頁面上的“Reset All”功能
reg.addInitParameter("resetEnable","false");
//reg.addInitParameter("allow", "127.0.0.1"); //白名單
return reg;
}
@Bean
public FilterRegistrationBean filterRegistrationBean() {
//創(chuàng)建過濾器
FilterRegistrationBean filterRegistrationBean = new FilterRegistrationBean();
filterRegistrationBean.setFilter(new WebStatFilter());
Map initParams = new HashMap();
//忽略過濾的形式
initParams.put("exclusions", "*.js,*.gif,*.jpg,*.bmp,*.png,*.css,*.ico,/druid/*");
filterRegistrationBean.setInitParameters(initParams);
//設(shè)置過濾器過濾路徑
filterRegistrationBean.addUrlPatterns("/*");
return filterRegistrationBean;
}
}
注意：這里ServletRegistrationBean 配置bean中通過addInitParameter設(shè)置了管控臺(tái)的用戶名密碼都是root，可以在這里進(jìn)行自定義配置也可以將這里的用戶名密碼通過轉(zhuǎn)移數(shù)據(jù)庫進(jìn)行定制化配置實(shí)現(xiàn)。
創(chuàng)建實(shí)體在工程java代碼目錄下創(chuàng)建entity的目錄在下面創(chuàng)建Student類加入以下代碼:
@Data
@EqualsAndHashCode(callSuper = false)
public class Student {
private static final long serialVersionUID = 1L;
/**
* 主鍵id
*/
private Integer sno;
/**
* 學(xué)生姓名
*/
private String sname;
/**
* 性別
*/
private String sex;
/**
* 生日
*/
private String birth;
/**
* 年齡
*/
private String age;
/**
* 簡(jiǎn)介
*/
private String dept;
}
創(chuàng)建Controller
在工程java代碼目錄下創(chuàng)建controller的目錄在下面創(chuàng)建StudentConteroller類加入以下代碼:
@Controller
@RequestMapping("/student")
public class StudentConteroller {
private static final Logger LOGGER = LoggerFactory.getLogger(StudentConteroller.class);
@Autowired
protected StudentService studentService;
/**
* 查詢所有的學(xué)生信息
*
* @param sname
* @param age
* @param modelMap
* @return
*/
@ResponseBody
@GetMapping("/list")
public String list(String sname, Integer age, ModelMap modelMap) {
String json = null;
try {
List studentList = studentService.getStudentList(sname, age);
modelMap.put("ren_code", "0");
modelMap.put("ren_msg", "查詢成功");
modelMap.put("studentList", studentList);
json = JSON.toJSONString(modelMap);
} catch (Exception e) {
e.printStackTrace();
modelMap.put("ren_code", "0");
modelMap.put("ren_msg", "查詢失敗===>" + e);
LOGGER.error("查詢失敗===>" + e);
json = JSON.toJSONString(modelMap);
}
return json;
}
}
創(chuàng)建Service
在工程java代碼目錄下面創(chuàng)建service目錄在下面創(chuàng)建StudentService類加入以下代碼:
public interface StudentService {
/**
* 查詢所有的學(xué)生信息
*
* @param sname
* @param age
* @return
*/
List getStudentList(String sname, Integer age);
}
創(chuàng)建ServiceImpl
在工程java代碼目錄下的service的目錄下面創(chuàng)建impl目錄在下面創(chuàng)建StudentServiceImpl類加入以下代碼:
@Service("StudentService")
@Transactional(readOnly = true, rollbackFor = Exception.class)
public class StudentServiceImpl implements StudentService {
@Autowired
StudentDao studentDao;
@Override
public List getStudentList(String sname, Integer age) {
return studentDao.getStudentList(sname,age);
}
}
創(chuàng)建Dao
在工程java代碼目錄下創(chuàng)建dao的目錄在下面創(chuàng)建StudentDao類加入以下代碼:
public interface StudentDao {
List getStudentList(@Param("sname")String sname, @Param("age")Integer age);
}
創(chuàng)建Mapper映射文件
在工程resource目錄下創(chuàng)建mapper的目錄在下面創(chuàng)建StudentMapper.xml映射文件加入以下代碼:
創(chuàng)建啟動(dòng)類
@SpringBootApplication
@MapperScan("cn.zhangbox.springboot.dao")//配置mybatis接口包掃描
public class SpringBootDruidApplication extends SpringBootServletInitializer {
public static void main(String[] args) {
SpringApplication.run(SpringBootDruidApplication.class, args);
}
}
啟動(dòng)項(xiàng)目進(jìn)行測(cè)試：
控制臺(tái)打印
. ____ _ __ _ _
/ / ___"_ __ _ _(_)_ __ __ _
( ( )\___ | "_ | "_| | "_ / _` |
/ ___)| |_)| | | | | || (_| | ) ) ) )
" |____| .__|_| |_|_| |_\__, | / / / /
=========|_|==============|___/=/_/_/_/
:: Spring Boot :: (v1.5.3.RELEASE)
2018-07-07 10:54:52.404 INFO 24084 --- [ main] c.z.s.SpringBootDruidApplication : Starting SpringBootDruidApplication on HP with PID 24084 (C:UsersAdministratorDesktopspring-boot-studyspring-boot-druid argetclasses started by Administrator in C:UsersAdministratorDesktopspring-boot-study)
2018-07-07 10:54:52.445 INFO 24084 --- [ main] c.z.s.SpringBootDruidApplication : The following profiles are active: dev
2018-07-07 10:54:52.570 INFO 24084 --- [ main] ationConfigEmbeddedWebApplicationContext : Refreshing org.springframework.boot.context.embedded.AnnotationConfigEmbeddedWebApplicationContext@53142455: startup date [Sat Jul 07 10:54:52 CST 2018]; root of context hierarchy
2018-07-07 10:54:52.997 INFO 24084 --- [kground-preinit] o.h.validator.internal.util.Version : HV000001: Hibernate Validator 5.3.5.Final
2018-07-07 10:54:53.736 INFO 24084 --- [ main] o.s.b.f.s.DefaultListableBeanFactory : Overriding bean definition for bean "filterRegistrationBean" with a different definition: replacing [Root bean: class [null]; scope=; abstract=false; lazyInit=false; autowireMode=3; dependencyCheck=0; autowireCandidate=true; primary=false; factoryBeanName=druidDBConfig; factoryMethodName=filterRegistrationBean; initMethodName=null; destroyMethodName=(inferred); defined in class path resource [cn/zhangbox/springboot/config/DruidDBConfig.class]] with [Root bean: class [null]; scope=; abstract=false; lazyInit=false; autowireMode=3; dependencyCheck=0; autowireCandidate=true; primary=false; factoryBeanName=com.alibaba.druid.spring.boot.autoconfigure.stat.DruidWebStatFilterConfiguration; factoryMethodName=filterRegistrationBean; initMethodName=null; destroyMethodName=(inferred); defined in class path resource [com/alibaba/druid/spring/boot/autoconfigure/stat/DruidWebStatFilterConfiguration.class]]
2018-07-07 10:54:54.887 INFO 24084 --- [ main] s.b.c.e.t.TomcatEmbeddedServletContainer : Tomcat initialized with port(s): 8080 (http)
2018-07-07 10:54:54.903 INFO 24084 --- [ main] o.apache.catalina.core.StandardService : Starting service Tomcat
2018-07-07 10:54:54.905 INFO 24084 --- [ main] org.apache.catalina.core.StandardEngine : Starting Servlet Engine: Apache Tomcat/8.5.14
2018-07-07 10:54:55.123 INFO 24084 --- [ost-startStop-1] o.a.c.c.C.[Tomcat].[localhost].[/] : Initializing Spring embedded WebApplicationContext
2018-07-07 10:54:55.124 INFO 24084 --- [ost-startStop-1] o.s.web.context.ContextLoader : Root WebApplicationContext: initialization completed in 2554 ms
2018-07-07 10:54:55.522 INFO 24084 --- [ost-startStop-1] o.s.b.w.servlet.ServletRegistrationBean : Mapping servlet: "statViewServlet" to [/druid/*]
2018-07-07 10:54:55.525 INFO 24084 --- [ost-startStop-1] o.s.b.w.servlet.ServletRegistrationBean : Mapping servlet: "dispatcherServlet" to [/]
2018-07-07 10:54:55.525 INFO 24084 --- [ost-startStop-1] o.s.b.w.servlet.ServletRegistrationBean : Mapping servlet: "statViewServlet" to [/druid/*]
2018-07-07 10:54:55.526 INFO 24084 --- [ost-startStop-1] o.s.b.w.servlet.ServletRegistrationBean : Servlet statViewServlet was not registered (possibly already registered?)
2018-07-07 10:54:55.531 INFO 24084 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean : Mapping filter: "characterEncodingFilter" to: [/*]
2018-07-07 10:54:55.531 INFO 24084 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean : Mapping filter: "hiddenHttpMethodFilter" to: [/*]
2018-07-07 10:54:55.532 INFO 24084 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean : Mapping filter: "httpPutFormContentFilter" to: [/*]
2018-07-07 10:54:55.533 INFO 24084 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean : Mapping filter: "requestContextFilter" to: [/*]
2018-07-07 10:54:55.533 INFO 24084 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean : Mapping filter: "webStatFilter" to urls: [/*]
2018-07-07 10:54:57.216 INFO 24084 --- [ main] s.w.s.m.m.a.RequestMappingHandlerAdapter : Looking for @ControllerAdvice: org.springframework.boot.context.embedded.AnnotationConfigEmbeddedWebApplicationContext@53142455: startup date [Sat Jul 07 10:54:52 CST 2018]; root of context hierarchy
2018-07-07 10:54:57.322 INFO 24084 --- [ main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/student/list],methods=[GET]}" onto public java.lang.String cn.zhangbox.springboot.controller.StudentConteroller.list(java.lang.String,java.lang.Integer,org.springframework.ui.ModelMap)
2018-07-07 10:54:57.326 INFO 24084 --- [ main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/error]}" onto public org.springframework.http.ResponseEntity> org.springframework.boot.autoconfigure.web.BasicErrorController.error(javax.servlet.http.HttpServletRequest)
2018-07-07 10:54:57.328 INFO 24084 --- [ main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/error],produces=[text/html]}" onto public org.springframework.web.servlet.ModelAndView org.springframework.boot.autoconfigure.web.BasicErrorController.errorHtml(javax.servlet.http.HttpServletRequest,javax.servlet.http.HttpServletResponse)
2018-07-07 10:54:57.376 INFO 24084 --- [ main] o.s.w.s.handler.SimpleUrlHandlerMapping : Mapped URL path [/webjars/**] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler]
2018-07-07 10:54:57.376 INFO 24084 --- [ main] o.s.w.s.handler.SimpleUrlHandlerMapping : Mapped URL path [/**] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler]
2018-07-07 10:54:57.451 INFO 24084 --- [ main] o.s.w.s.handler.SimpleUrlHandlerMapping : Mapped URL path [/**/favicon.ico] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler]
2018-07-07 10:54:58.066 INFO 24084 --- [ main] o.s.j.e.a.AnnotationMBeanExporter : Registering beans for JMX exposure on startup
2018-07-07 10:54:58.068 INFO 24084 --- [ main] o.s.j.e.a.AnnotationMBeanExporter : Bean with name "statFilter" has been autodetected for JMX exposure
2018-07-07 10:54:58.069 INFO 24084 --- [ main] o.s.j.e.a.AnnotationMBeanExporter : Bean with name "dataSource" has been autodetected for JMX exposure
2018-07-07 10:54:58.077 INFO 24084 --- [ main] o.s.j.e.a.AnnotationMBeanExporter : Located MBean "dataSource": registering with JMX server as MBean [com.alibaba.druid.spring.boot.autoconfigure:name=dataSource,type=DruidDataSourceWrapper]
2018-07-07 10:54:58.081 INFO 24084 --- [ main] o.s.j.e.a.AnnotationMBeanExporter : Located MBean "statFilter": registering with JMX server as MBean [com.alibaba.druid.filter.stat:name=statFilter,type=StatFilter]
2018-07-07 10:54:58.101 INFO 24084 --- [ main] o.a.coyote.http11.Http11NioProtocol : Initializing ProtocolHandler ["http-nio-8080"]
2018-07-07 10:54:58.118 INFO 24084 --- [ main] o.a.coyote.http11.Http11NioProtocol : Starting ProtocolHandler ["http-nio-8080"]
2018-07-07 10:54:58.145 INFO 24084 --- [ main] o.a.tomcat.util.net.NioSelectorPool : Using a shared selector for servlet write/read
2018-07-07 10:54:58.172 INFO 24084 --- [ main] s.b.c.e.t.TomcatEmbeddedServletContainer : Tomcat started on port(s): 8080 (http)
2018-07-07 10:54:58.179 INFO 24084 --- [ main] c.z.s.SpringBootDruidApplication : Started SpringBootDruidApplication in 7.666 seconds (JVM running for 10.386)
2018-07-07 11:00:00.245 INFO 24084 --- [nio-8080-exec-5] o.a.c.c.C.[Tomcat].[localhost].[/] : Initializing Spring FrameworkServlet "dispatcherServlet"
2018-07-07 11:00:00.246 INFO 24084 --- [nio-8080-exec-5] o.s.web.servlet.DispatcherServlet : FrameworkServlet "dispatcherServlet": initialization started
2018-07-07 11:00:00.302 INFO 24084 --- [nio-8080-exec-5] o.s.web.servlet.DispatcherServlet : FrameworkServlet "dispatcherServlet": initialization completed in 56 ms
2018-07-07 11:00:01.606 INFO 24084 --- [nio-8080-exec-5] com.alibaba.druid.pool.DruidDataSource : {dataSource-1} inited
瀏覽器請(qǐng)求測(cè)試
本地日志打印效果
2018-07-07 10:54:52.439 [main] DEBUG cn.zhangbox.springboot.SpringBootDruidApplication - Running with Spring Boot v1.5.3.RELEASE, Spring v4.3.8.RELEASE 2018-07-07 11:00:01.715 [http-nio-8080-exec-5] DEBUG c.z.springboot.dao.StudentDao.getStudentList - ==> Preparing: SELECT s.sno, s.sname, s.sex, s.dept, s.birth, s.age FROM student s WHERE 1 = 1 2018-07-07 11:00:01.881 [http-nio-8080-exec-5] DEBUG c.z.springboot.dao.StudentDao.getStudentList - ==> Parameters: 2018-07-07 11:00:01.931 [http-nio-8080-exec-5] DEBUG c.z.springboot.dao.StudentDao.getStudentList - <== Total: 2
這里使用logback配置中將不同級(jí)別的日志設(shè)置了在不同文件中打印，這樣很大程度上方便項(xiàng)目出問題查找問題。
Druid管控臺(tái)Spring Boot整合Druid連接池以及Druid監(jiān)控源碼
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