Configuring log4j logs in the SSH framework and STRUTS2 configuration exception handling methods

Last Update:2018-07-26 Source: Internet

Author: User

Tags exception handling log4j

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1. log4j.properties File Configuration Example

# Default properties to initialise log4j
log4j.rootlogger=error,file,a1

log4j.appender.a1= Org.apache.log4j.ConsoleAppender
log4j.appender.a1.layout=org.apache.log4j.patternlayout
Log4j.appender.a1.layout.conversionpattern=[%d{mm-dd HH:mm:ss}]%-5p%c{1} [%t]:%m%n

# file
Log4j.appender.file=org.apache.log4j.rollingfileappender
log4j.appender.file.file=${webapp.root}/web-inf/ Log/sshtest.log
log4j.appender.file.layout=org.apache.log4j.patternlayout
LOG4J.APPENDER.FILE.LAYOUT.CONVERSIONPATTERN=%D{HH:MM:SS}%-5p [%c] (%f:%l)-%m%n
log4j.appender.file.maxfilesize=4096kb

2. web.xml File Configuration Example

<web-app version= "3.0" xmlns= Http://java.sun.com/xml/ns/javaee "xmlns:xsi=" http://www.w3.org/2001/ Xmlschema-instance "xsi:schemalocation=" Http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/ Web-app_3_0.xsd "> <display-name></display-name> <welcome-file-list> <welcome-file>inde x.jsp</welcome-file> </welcome-file-list> <filter> &LT;FILTER-NAME&GT;STRUTS2&LT;/FILTER-NAME&G
  	T <filter-class> Org.apache.struts2.dispatcher.FilterDispatcher </filter-class> </filter> < filter-mapping> <filter-name>struts2</filter-name> <url-pattern>/*</url-pattern> </ Filter-mapping> <!--pay attention to the order of each listener, otherwise there may be the above ${webapp.root}/web-inf/log/sshtest.log anomaly--> <!--log4j con Fig path--> <context-param> <param-name>log4jConfigLocation</param-name> <param-value>/ web-inf/classes/log4j.properties</param-value&Gt </context-param> <!--webapp Root path--> <context-param> <param-name>webapprootkey</p Aram-name> <param-value>webapp.root</param-value> </context-param> <!--spring Config path --> <context-param> <param-name>contextConfigLocation</param-name> <param-value>/web-i
  Nf/classes/applicationcontext.xml</param-value> </context-param> <!--log4j Config listener-->
  <listener> <listener-class> Org.springframework.web.util.Log4jConfigListener </listener-class> </listener> <!--spring Contextloader listener--> <listener> <listener-class> org. Springframework.web.context.ContextLoaderListener </listener-class> </listener> </web-app>

3. struts2.xml File Configuration Example
The following configuration allows you to automatically go to the Exception display page when an unexpected exception is applied; Note the order of each node

<struts> <package name= "its" extends= "Struts-default" > <interceptors> <interceptor-stack name= "Globalstack" > <interceptor-ref name= "defaultstack" > <param name= "exception.logenabled" >true</p aram> <param name= "Exception.loglevel" >ERROR</param> </interceptor-ref> </interceptor- stack> </interceptors> <default-interceptor-ref name= "Globalstack" ></default-interceptor-ref > <global-results> <result name= "error" >/error.jsp</result> </global-results> <glob Al-exception-mappings> <!--Here you can set up multiple exception types--> <exception-mapping result= "error" exception= " Java.lang.Exception "></exception-mapping> </global-exception-mappings> <action name=" Login " class= "Com.inspur.its.action.LoginAction" > <result name= "Success" >/Result.jsp</result> </action    
 > </package> </struts>

4. error.jsp page sample (only show the body part, import the struts2 tablib)

<body>
	<div align= "CENTER" >
		An example of a truncated diagram following an exception appears:

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