Struts2学习笔记三——Namespace与访问路径_struts namespace 路径-优快云博客

本文链接：https://blog.youkuaiyun.com/Morandas/article/details/71154503

Namespace决定了action的访问路径

1，如果Namespace不写（默认为""(空)）或者定义为""或者"/"，表示可以接受以下路径的action。

	<package name="default1"  extends="struts-default">
		<action name="namespace" class="action.NamespaceAction">
			<result name="success">/success.jsp</result>
		</action>
	</package>

public class NamespaceAction {
	public String execute() {
		System.out.println("this is NamespaceAction");
		return "success";
	}
}

下面路径都能访问

2，如果Namespace定义为"/path1"，访问路径为/action名称、/path1/action名称（Struts2中.action可以省略）

	<package name="default1" namespace="/aaa"  extends="struts-default">
		<action name="namespace" class="action.NamespaceAction">
			<result name="success">/success.jsp</result>
		</action>
	</package>

异常

3，如果Namespace路径嵌套很多

如：path1/path2/path3与" "

	<package name="default" namespace="" extends="struts-default">
		<action name="namespace" class="action.NamespaceAction">
			<result name="success">/success.jsp</result>
		</action>
	</package> 
	<package name="default1" namespace="/aaa/bbb/ccc" extends="struts-default">
		<action name="namespace" class="action.Namespace1Action">
			<result name="success">/success1.jsp</result>
		</action>
	</package>

success.jsp
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
    <title></title>

  </head>
  
  <body>
	this is NamespceAction,namespace=""
  </body>
</html>

success1.jsp
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
    <title></title>

  </head>
  
  <body>
	this is Namespce1Action,namespace="/aaa/bbb/ccc"
  </body>
</html>

NamespaceAction.java

public class NamespaceAction {
	public String execute() {
		return "success";
	}
}

NamespaceAction1.java

public class Namespace1Action {
	public String execute() {
		return "success";
	}
}

如：/path1/path2 与/path3

	<package name="default" namespace="/bbb/ccc" extends="struts-default">
		<action name="namespace" class="action.NamespaceAction">
			<result name="success">/success.jsp</result>
		</action>
	</package> 
	<package name="default1" namespace="/aaa" extends="struts-default">
		<action name="namespace" class="action.Namespace1Action">
			<result name="success">/success1.jsp</result>
		</action>
	</package>

如：/path1/path2 与 /path1

	<package name="default" namespace="/aaa/bbb" extends="struts-default">
		<action name="namespace" class="action.NamespaceAction">
			<result name="success">/success.jsp</result>
		</action>
	</package> 
	<package name="default1" namespace="/aaa" extends="struts-default">
		<action name="namespace" class="action.Namespace1Action">
			<result name="success">/success1.jsp</result>
		</action>
	</package>