Struts2 configure wildcards for multiple business processing actions

This article will introduce you to notes on configuring wildcards for multiple business processing actions in Struts2. I hope this tutorial will be helpful to you.

1. Action

The Code is as follows:

Copy code

Package org. Rudiment. action; Import javax. servlet. ServletRequest; Import javax. servlet. http. HttpServletRequest; Import org. apache. struts2.ServletActionContext; Import org. apache. struts2.interceptor. ServletRequestAware; Import com. opensymphony. xwork2.ActionContext; Import com. opensymphony. xwork2.ActionSupport; Public class LoginAction extends ActionSupport { @ Override Public String execute () throws Exception { System. out. println ("execute executed "); Return SUCCESS; } Public String test1 () throws Exception { System. out. println ("test1 executed "); Return SUCCESS; } Public String test2 () throws Exception { System. out. println ("test2 executed "); Return SUCCESS; } }

2. struts. xml configuration file content

The Code is as follows:

Copy code

<? Xml version = "1.0" encoding = "UTF-8"?> <! DOCTYPE struts PUBLIC "-// Apache Software Foundation // DTD Struts Configuration 2.1 // EN" "http://struts.apache.org/dtds/struts-2.1.dtd"> <Struts> <Constant name = "struts. custom. i18n. resource" value = "mess"/> <Constant name = "struts. i18n. encoding" value = "GBK"/> <Package name = "default" extends = "struts-default"> <Action name = "* Action" class = "org. Rudiment. action. LoginAction" method = "{1}"> <Result name = "input">/login. jsp </result> <Result name = "error">/error. jsp </result> <Result name = "success">/welcom. jsp </result> </Action> </Package> </Struts>

3. Example of front-end form submission

The current form action = "Action", struts handed the business to execute ()
For the current form action = "test1Action", struts handed the business to test1 () for execution
The current form action = "test2Action", struts handed the business to test2 () for execution
Action = "executeAction" of the current form, struts delivers the business to execute ()

====================================== Extended content ================ ====================

1. still use the above Action, and then change the configuration file to this

The Code is as follows:

Copy code

<? Xml version = "1.0" encoding = "UTF-8"?> <! DOCTYPE struts PUBLIC "-// Apache Software Foundation // DTD Struts Configuration 2.1 // EN" "http://struts.apache.org/dtds/struts-2.1.dtd"> <Struts> <Constant name = "struts. custom. i18n. resource" value = "mess"/> <Constant name = "struts. i18n. encoding" value = "GBK"/> <Package name = "default" extends = "struts-default"> <Action name = "* _ *" class = "org. Rudiment. action. {1}" method = "{2}"> <Result name = "input">/login. jsp </result> <Result name = "error">/error. jsp </result> <Result name = "success">/welcom. jsp </result> </Action> </Package> </Struts>

2. Example of front-end form submission

The current form action = "LoginAction_execute", struts handed over the business to execute ()
The current form action = "LoginAction_test1", struts handed the business to test1 () for execution
The current form action = "LoginAction_test2", struts handed the business to test2 () for execution
 

Note: When the requested action = "LoginAction_test1", struts will send the request to the test1 () method of org. Rudiment. action. LoginAction for processing.

In addition, the {1} expression can be used in both action and result.
When we configure

The Code is as follows:	Copy code
<Action name = "*"> <Result>/*. jsp </result> </Action>

Here, action does not specify the class to be processed. By default, struts uses ActionSuppoer. This class always returns Action. SUCCESS.
Therefore, for the current request action = "index", strtus maps the request to the index. jsp page, that is, the view returned to the user is index. jsp.
Note that if the name attribute is not specified in the result, the default value is name = success.