Original link: https://blog.csdn.net/u014427391/article/details/70890506
Druid
Druid: a framework for monitoring database connection pool born, the entire project by the database connection pool, plug-in framework and SQL parser components.
Druid function between PowerDrill and Dremel, almost all the features of the Dremel, and from PowerDrill absorb some interesting data format. Druid allows a similar manner PowerDrill Dremel and single-table queries, but also adds new features, such as providing a column storage format is a partially nested data structure, indexing is quickly filtered, and the real-time query uptake, distribution of high fault tolerance style architecture and so on.
The Boot Spring
the Spring Framework as an important field of JavaEE framework of open-source framework has a very important role in enterprise application development, while the Spring Framework and its many sub-frame, so the amount of knowledge is very broad.
Spring Boot: a sub-frame Spring framework can also be called Micro Framework, launched in 2014, is a framework for the development of the Spring framework easier. Learned all the knowledge of the Spring Framework, Spring Framework is difficult to avoid the need to configure a lot of XMl, while using Spring Boot framework, then you can use annotations development, greatly simplifying the Spring Framework-based development. Spring Boot JavaConfig full advantage of the patterns and the philosophy of "convention over configuration", can greatly simplify the REST-based Web applications and services development for Spring MVC.
Then this blog introduces Spring Boot project-based IDEA editor to create and deploy.
Spring Boot monitor the use of Druid
maven configuration
To configure the spring Boot achieve a Demo, then just add spring-boot-starter (core modules) and spring-boot-starter-web (because this a Web project), can refer to my configuration, where the use of Spring Boot heat deployment, we need to search jar on github: springloaded-1.2.4.RELEASE.jar, and then download the lib folder of the project where you can refer to my configuration
<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/maven-v4_0_0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.example</groupId>
<artifactId>demo</artifactId>
<packaging>war</packaging>
<version>1.0-SNAPSHOT</version>
<name>demo Maven Webapp</name>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<java.version>1.8</java.version>
<druid.version>1.0.24</druid.version>
<mysql.version>5.1.27</mysql.version>
<spring-boot-admin.version>1.4.5</spring-boot-admin.version>
</properties>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.5.1.RELEASE</version>
<relativePath/>
</parent>
<dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>3.8.1</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-actuator</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>de.codecentric</groupId>
<artifactId>spring-boot-admin-starter-client</artifactId>
<version>${spring-boot-admin.version}</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter</artifactId>
</dependency>
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid</artifactId>
<version>${druid.version}</version>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>${mysql.version}</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin </artifactId>
<dependencies>
<!--springloaded hot deploy -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>springloaded</artifactId>
<systemPath>${basedir}/src/main/webapp/WEB-INF/lib/springloaded-1.2.5.RELEASE.jar</systemPath>
</dependency>
</dependencies>
<executions>
<execution>
<goals>
<goal>repackage</goal>
</goals>
<configuration>
<classifier>exec</classifier>
</configuration>
</execution>
</executions>
</plugin>
</plugins>
</build>
</project>
application.properties Configuration
server.context-path=/springbootdemo
#数据库访问配置
spring.datasource.type=com.alibaba.druid.pool.DruidDataSource
spring.datasource.driver-class-name=com.mysql.jdbc.Driver
spring.datasource.url=jdbc:mysql://localhost:3306/myblog
spring.datasource.username=root
spring.datasource.password=root
#数据源配置，初始化大小、最小、最大
spring.datasource.initialSize=5
spring.datasource.minIdle=5
spring.datasource.maxActive=20
#连接等待超时时间
spring.datasource.maxWait=60000
#配置隔多久进行一次检测(检测可以关闭的空闲连接)
spring.datasource.timeBetweenEvictionRunsMillis=60000
#配置连接在池中的最小生存时间
spring.datasource.minEvictableIdleTimeMillis=300000
spring.datasource.validationQuery=SELECT 1 FROM DUAL
spring.datasource.testWhileIdle=true
spring.datasource.testOnBorrow=false
spring.datasource.testOnReturn=false
# 打开PSCache，并且指定每个连接上PSCache的大小
spring.datasource.poolPreparedStatements=true
spring.datasource.maxPoolPreparedStatementPerConnectionSize=20
# 配置监控统计拦截的filters，去掉后监控界面sql无法统计，'wall'用于防火墙
spring.datasource.filters=stat,wall,log4j
# 通过connectProperties属性来打开mergeSql功能；慢SQL记录
spring.datasource.connectionProperties=druid.stat.mergeSql=true;druid.stat.slowSqlMillis=5000
Method 1: native servlet and filter mode
package com.example.web.servlet;
import com.alibaba.druid.support.http.StatViewServlet;
import javax.servlet.annotation.WebInitParam;
import javax.servlet.annotation.WebServlet;
/**
* Created by Administrator on 2017/4/28.
*/
@WebServlet(urlPatterns = "/druid/*",
initParams = {
@WebInitParam(name = "allow", value = "192.168.10.25,127.0.0.1"),// IP白名单 (没有配置或者为空，则允许所有访问)
@WebInitParam(name = "deny", value = "192.168.1.73"),// IP黑名单 (存在共同时，deny优先于allow)
@WebInitParam(name = "loginUsername", value = "admin"),// 用户名
@WebInitParam(name = "loginPassword", value = "123"),// 密码
@WebInitParam(name = "resetEnable", value = "false")// 禁用HTML页面上的“Reset All”功能)
}
)
public class DruidStatViewServlet extends StatViewServlet{
}
Filter categories:
package com.example.web.filter;
import com.alibaba.druid.support.http.WebStatFilter;
import javax.servlet.annotation.WebFilter;
import javax.servlet.annotation.WebInitParam;
/**
* Created by Administrator on 2017/4/28.
*/
@WebFilter(filterName="druidWebStatFilter",urlPatterns="/*",
initParams={
@WebInitParam(name="exclusions",value="*.js,*.gif,*.jpg,*.bmp,*.png,*.css,*.ico,/druid/*")// 忽略资源
}
)
public class DruidWebStatFilter extends WebStatFilter{
}
Then, you need to set Servlet automatically scan start in Spring Boot class, or 404 page not found error occurs, use @ServletComponentScan comment
package com;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.builder.SpringApplicationBuilder;
import org.springframework.boot.context.embedded.ConfigurableEmbeddedServletContainer;
import org.springframework.boot.context.embedded.EmbeddedServletContainerCustomizer;
import org.springframework.boot.web.servlet.ServletComponentScan;
import org.springframework.boot.web.support.SpringBootServletInitializer;
import org.springframework.scheduling.annotation.EnableAsync;
@SpringBootApplication
@ServletComponentScan
@EnableAsync
public class Application implements EmbeddedServletContainerCustomizer {
public static void main(String[] args) {
SpringApplication.run(Application.class, args);
}
@Override
public void customize(ConfigurableEmbeddedServletContainer configurableEmbeddedServletContainer) {
configurableEmbeddedServletContainer.setPort(8087);
}
}
Second way: Using the code registration Servlet and Filter
package com.example.config;
import com.alibaba.druid.support.http.StatViewServlet;
import com.alibaba.druid.support.http.WebStatFilter;
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;
/**
* Created by Administrator on 2017/4/28.
*/
@Configuration
public class DruidConfiguration {
/**
* 注册ServletRegistrationBean
* @return
*/
@Bean
public ServletRegistrationBean registrationBean() {
ServletRegistrationBean bean = new ServletRegistrationBean(new StatViewServlet(), "/druid1/*");
/** 初始化参数配置，initParams**/
//白名单
bean.addInitParameter("allow", "127.0.0.1");
//IP黑名单 (存在共同时，deny优先于allow) : 如果满足deny的话提示:Sorry, you are not permitted to view this page.
bean.addInitParameter("deny", "192.168.1.73");
//登录查看信息的账号密码.
bean.addInitParameter("loginUsername", "admin2");
bean.addInitParameter("loginPassword", "123");
//是否能够重置数据.
bean.addInitParameter("resetEnable", "false");
return bean;
}
/**
* 注册FilterRegistrationBean
* @return
*/
@Bean
public FilterRegistrationBean druidStatFilter() {
FilterRegistrationBean bean = new FilterRegistrationBean(new WebStatFilter());
//添加过滤规则.
bean.addUrlPatterns("/*");
//添加不需要忽略的格式信息.
bean.addInitParameter("exclusions","*.js,*.gif,*.jpg,*.png,*.css,*.ico,/druid2/*");
return bean;
}
}
Project Monitoring
and enter the url visit, my project access path: HTTP: // localhost: 8080 / springbootdemo / Druid / login.html
