前言

前提是在springboot上已经使用了druid，但是没有监控。因此怎么使用druid不在本文范围内，或者如果不是通过springboot使用druid的也不在本文范围内。

增加druid连接池监控

增加servlet

import javax.servlet.annotation.WebInitParam;
import javax.servlet.annotation.WebServlet;

import com.alibaba.druid.support.http.StatViewServlet;
@WebServlet(urlPatterns = "/druid/*", 
    initParams={
            @WebInitParam(name="loginUsername",value="admin"),// 用户名
            @WebInitParam(name="loginPassword",value="druid"),// 密码
            @WebInitParam(name="resetEnable",value="false")// 禁用HTML页面上的“Reset All”功能
    })
public class DruidServlet extends StatViewServlet {

    private static final long serialVersionUID = 1L;

}

增加filter

import javax.servlet.annotation.WebFilter;
import javax.servlet.annotation.WebInitParam;

import com.alibaba.druid.support.http.WebStatFilter;

@WebFilter(filterName="druidWebStatFilter",urlPatterns="/*",
initParams={
    @WebInitParam(name="exclusions",value="*.js,*.gif,*.jpg,*.bmp,*.png,*.css,*.ico,/druid/*")// 忽略资源
})
public class DruidFilter extends WebStatFilter {

}

增加ServletComponentScan

...
@ServletComponentScan
public class ServerApplication{
    public static void main(String[] args) throws Exception {
        SpringApplication.run(ServerApplication.class, args);
    }
}