Package com.alibaba.druid.support.jakarta

Class StatViewServlet

java.lang.Object

jakarta.servlet.GenericServlet

jakarta.servlet.http.HttpServlet

com.alibaba.druid.support.jakarta.ResourceServlet

com.alibaba.druid.support.jakarta.StatViewServlet

All Implemented Interfaces:

jakarta.servlet.Servlet, jakarta.servlet.ServletConfig, Serializable

public class StatViewServlet
extends ResourceServlet

注意：避免直接调用Druid相关对象例如DruidDataSource等，相关调用要到DruidStatManagerFacade里用反射实现

Author:

sandzhang[sandzhangtoo@gmail.com]

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class com.alibaba.druid.support.jakarta.ResourceServlet

ResourceServlet.ProcessCallback, ResourceServlet.ResourceHandler

Field Summary

Fields

Modifier and Type	Field	Description
static String	PARAM_NAME_JMX_PASSWORD
static String	PARAM_NAME_JMX_URL
static String	PARAM_NAME_JMX_USERNAME
static String	PARAM_NAME_RESET_ENABLE

Fields inherited from class com.alibaba.druid.support.jakarta.ResourceServlet

handler, PARAM_NAME_ALLOW, PARAM_NAME_DENY, PARAM_NAME_PASSWORD, PARAM_NAME_USERNAME, PARAM_REMOTE_ADDR, SESSION_USER_KEY

Constructor Summary

Constructors

Constructor	Description
StatViewServlet()

Method Summary

Modifier and Type	Method	Description
void	init()
protected String	process(String url)	程序首先判断是否存在jmx连接地址，如果不存在，则直接调用本地的druid服务； 如果存在，则调用远程jmx服务。
void	service(jakarta.servlet.http.HttpServletRequest request, jakarta.servlet.http.HttpServletResponse response)

Methods inherited from class com.alibaba.druid.support.jakarta.ResourceServlet

checkLoginParam, ContainsUser, getFilePath, getRemoteAddress, isPermittedRequest, isPermittedRequest, isRequireAuth, returnResourceFile

Methods inherited from class jakarta.servlet.http.HttpServlet

doDelete, doGet, doHead, doOptions, doPost, doPut, doTrace, getLastModified, service

Methods inherited from class jakarta.servlet.GenericServlet

destroy, getInitParameter, getInitParameterNames, getServletConfig, getServletContext, getServletInfo, getServletName, init, log, log

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

PARAM_NAME_RESET_ENABLE

public static final String PARAM_NAME_RESET_ENABLE

See Also:

Constant Field Values

PARAM_NAME_JMX_URL

public static final String PARAM_NAME_JMX_URL

See Also:

Constant Field Values

PARAM_NAME_JMX_USERNAME

public static final String PARAM_NAME_JMX_USERNAME

See Also:

Constant Field Values

PARAM_NAME_JMX_PASSWORD

public static final String PARAM_NAME_JMX_PASSWORD

See Also:

Constant Field Values

Constructor Detail

StatViewServlet

public StatViewServlet()

Method Detail

init

public void init()
          throws jakarta.servlet.ServletException

Overrides:

init in class ResourceServlet

Throws:

jakarta.servlet.ServletException

process

protected String process(String url)

程序首先判断是否存在jmx连接地址，如果不存在，则直接调用本地的druid服务； 如果存在，则调用远程jmx服务。在进行jmx通信，首先判断一下jmx连接是否已经建立成功，如果已经 建立成功，则直接进行通信，如果之前没有成功建立，则会尝试重新建立一遍。.

Specified by:

process in class ResourceServlet

Parameters:

url - 要连接的服务地址

Returns:

调用服务后返回的json字符串

service

public void service(jakarta.servlet.http.HttpServletRequest request,
                    jakarta.servlet.http.HttpServletResponse response)
             throws jakarta.servlet.ServletException,
                    IOException

Overrides:

service in class ResourceServlet

Throws:

jakarta.servlet.ServletException

IOException