ActionWildcard通配符

新建web project：struts2_0500_actionwildcard Build Path 项目图： src： StudentAction.java TeacherAction.java struts.xml WebRoot: index.jsp Student_add.jsp Student_delete.jsp Student_edit.jsp Student_find.jsp Teacher_add.jsp Teacher_

新建web project：struts2_0500_actionwildcard

Build Path

项目图：

　　src：

　　　　StudentAction.java

　　　　TeacherAction.java

　　　　struts.xml

　　WebRoot:

　　　　index.jsp

　　　　Student_add.jsp

　　　　Student_delete.jsp

　　　　Student_edit.jsp

　　　　Student_find.jsp

　　　　Teacher_add.jsp

　　　　Teacher_delete.jsp

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struts.xml

代码：

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE struts PUBLIC
 "-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"
 "http://struts.apache.org/dtds/struts-2.0.dtd">
<struts>
<constant name="struts.devMode" value="http://www.cnblogs.com/hongten/archive/2011/07/31/true" />
<package name="Student" namespace="/" extends="struts-default">
 <action name="*_*" class="com.b510.hongten.{1}Action">
 <result>
 /{1}_{2}.jsp
 </result>
 </action>


 <action name="Student_add" class="com.b510.hongten.StudentAction"
 method="add">
 <result>
 /Student_delete.jsp
 </result>
 </action>
</package>
</struts>

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在这里，我们没有去添加Teacher_edit.jsp和Teacher_find.jsp,要想申明的是，如不美不雅我们要添加的时辰

直接添加便可，不会因为我们又添加了新的的文件，而影响整个法度模范的运行。可是添加的时辰

必定要遵守"约定优于设置装备安排"的原则。如：Teacher的首字母必定要大年夜写，Teacher_edit.jsp就得必定要以

这种形式去写。不然我们还是免不了去改削设置装备安排文件；

还有一个就是，我们看到struts.xml文件中有两个action，其拭魅这里只是为了做一个小测试二用的：

我们的法度模范中只用：

就足可使我们的法度模范很好的运行起来，可是添加了第二个action后：

<action name="Student_add" class="com.b510.hongten.StudentAction"
 method="add">
 <result>/Student_delete.jsp</result>
 　</action>

这时辰就会显现我们访谒一个url：http://localhost:1000/struts2_0500_actionwildcard/Student_add

的时辰，是去的是：Student_delete.jsp 这个页面，而不是我们的Student_add.jsp页面，这是为甚么呢？

原因是：在struts2中，当我们访谒的url来到的时辰，处事器就会在struts.xml文件中找最接近这个url的action(如不美不雅

是同一个包中)，我们很等闲发现：

　　"*_*"和"Student_add" 和url对角力计较，显然是后者要接近，所以选择了Student_delete.jsp,而非Student_add.jsp

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StudentAction.java

代码：

package com.b510.hongten;

import com.opensymphony.xwork2.ActionSupport;

/**
*
* @author XHW
*
* @date 2011-7-30
*
*/
public class StudentAction extends ActionSupport {
private static final long serialVersionUID = -5023520095036169842L;

public String add() {
return SUCCESS;
}

public String delete() {
return SUCCESS;
}

public String edit() {
return SUCCESS;
}

public String find() {
return SUCCESS;
}
}

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TeacherAction.java

代码；

package com.b510.hongten;

import com.opensymphony.xwork2.ActionSupport;

/**
*
* @author XHW
*
* @date 2011-7-30
*
*/
public class TeacherAction extends ActionSupport {
private static final long serialVersionUID = -5023520095036169843L;

public String add() {
return SUCCESS;
}

public String delete() {
return SUCCESS;
}

public String edit() {
return SUCCESS;
}

public String find() {
return SUCCESS;
}
}

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index.jsp

代码；

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
 <base href="http://www.cnblogs.com/hongten/archive/2011/07/31/<%=basePath%>">

 <title>My JSP 'index.jsp' starting page</title>
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">

</head>

<body>
 My JSP 'index.jsp' starting page 
 <a href="http://www.cnblogs.com/hongten/archive/2011/07/31/<%=basePath %>Student_add">增添学生</a>
 <a href="http://www.cnblogs.com/hongten/archive/2011/07/31/<%=basePath %>Student_delete">删除学生</a> 
 <a href="http://www.cnblogs.com/hongten/archive/2011/07/31/<%=basePath %>Student_edit">编辑学生</a>
 <a href="http://www.cnblogs.com/hongten/archive/2011/07/31/<%=basePath %>Student_find">查看学生</a> 
 <a href="http://www.cnblogs.com/hongten/archive/2011/07/31/<%=basePath %>Teacher_add">增添教员</a>
 <a href="http://www.cnblogs.com/hongten/archive/2011/07/31/<%=basePath %>Teacher_delete">删除教员</a> 
 <a href="http://www.cnblogs.com/hongten/archive/2011/07/31/<%=basePath %>Teacher_edit">编辑教员</a>
 <a href="http://www.cnblogs.com/hongten/archive/2011/07/31/<%=basePath %>Teacher_find">查看教员</a> 
</body>
</html>

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Student_add.jsp

代码：

</head>

<body>
My JSP 'Student_add.jsp' starting page 
<a href="http://www.cnblogs.com/hongten/archive/2011/07/31/<%=basePath %>index.jsp">home</a>
</body>
</html>

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Student_delete.jsp

代码：

</head>

<body>
 My JSP 'Student_delete.jsp' starting page 
 <a href="http://www.cnblogs.com/hongten/archive/2011/07/31/<%=basePath %>index.jsp">home</a>
</body>
</html>

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Student_edit.jsp

代码：

</head>

<body>
 My JSP 'Student_edit.jsp' starting page 
 <a href="http://www.cnblogs.com/hongten/archive/2011/07/31/<%=basePath %>index.jsp">home</a>
</body>
</html>

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Student_find.jsp

代码：

-->

</head>

<body>
My JSP 'Student_find.jsp' starting page 
<a href="http://www.cnblogs.com/hongten/archive/2011/07/31/<%=basePath %>index.jsp">home</a>
</body>
</html>

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Teacher_add.jsp

代码：

</head>

<body>
 My JSP 'Teacher_add.jsp' starting page 
 <a href="http://www.cnblogs.com/hongten/archive/2011/07/31/<%=basePath %>index.jsp">home</a>
</body>
</html>

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Teacher_delete.jsp

代码；

</head>

<body>
My JSP 'Teacher_delete.jsp' starting page 
<a href="http://www.cnblogs.com/hongten/archive/2011/07/31/<%=basePath %>index.jsp">home</a>
</body>
</html>