struts2 的问题

pmlxp 2010-05-19 09:00:34

struts2 中跳转的时候报404
路径变为http://localhost:8089/struts2demo20100514/users;jsessionid=68E67AFA8103F3FF6A98CAEA6BA42FA7

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colin_pxx 2010-05-24

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[Quote=引用 9 楼 pmlxp 的回复:]
如下

Java code

严重: Could not find action or result
There is no Action mapped for namespace / and action name users. - [unknown location]
at com.opensymphony.xwork2.DefaultActionProxy.prepare……
[/Quote]
把namespace的/去掉

huangzhichang 2010-05-19

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肯定要一样的拉，要不他怎么知道接受的是哪个表单提交过来的action啊，那个流程是这样的，表单提交之后来到strut.xml,在strut.xml中找到相应的action，然后去action中找到你指定的方法，然后执行，执行之后返回一个值，在strut.xml中通过那个返回值来选择跳转，这样说够清楚了吧

niaowxf 2010-05-19

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struts2中 <form action="user.action(或者就user)" ></form>这样写法在配置文件中就要写方法名，不写就会执行ACTION中默认的execute方法，
如果用<form action="user.action(或者就user)!save" ></form>在配置文件中就不用指定save方法了，他自己就会去找了
ruturn 时候，直接就return "list";如果要注明是跳转页面,就要在strut配置文件中的这个返回参数加上
<result type="redirectAction" name="list">你的页面</result>

pmlxp 2010-05-19

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不可能一样吧

huangzhichang 2010-05-19

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struts2中，<s:form action="users!save" method="post">这样写就OK了，也就是不用写.action的，然后<action name="users!save" class="com.pml.action.UsersAction" method="XXXX">红色的地方要相同的

pmlxp 2010-05-19

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<a href="users!save.action">添加</a>可以執行
<s:form action="users!save.action" method="post">这样写不能执行
我想知道action=""写什么可以执行

pmlxp 2010-05-19

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现在不报错了
但是不管你怎么操作它跳转到success
也应该是这个



if(count>0){  	

		return ("list");  		}  

		else{  			return ("error");  		}

啊
打印也沒有
所以根本沒執行這個方法
怎麼會跳轉到success呢

huangzhichang 2010-05-19

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LZ你的这个struts1的习惯还没丢掉吧，怎么strutss2的好东西你都不用呢，比如接受页面的值，你可以model.属性来获得，还有，你的struts.xml的配置那里，只指到了那个action，并没有说明你用了action里的哪个方法，可以在 <action name="users" class="com.pml.action.UsersAction" method="XXXX">添加你用到的方法，还有web.xml里你配置了拦截器没，你的<s:form action="users!save.action" method="post">改成

<s:form action="users!save" method="post">，然后
</result>
<result name="list" type="redirect">/users!save.action</result>
</action>

LZ还是多看看struts2的帮助吧，你的思想都是struts1的，还没有转过struts2

艾瑞儿 2010-05-19

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<result name="list">/users!method=save.action</result>
改成
<result name="list" type="chain">/users!save</result>
这样试试，应该没有问题的

pmlxp 2010-05-19

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如下



严重: Could not find action or result

There is no Action mapped for namespace / and action name users. - [unknown location]

	at com.opensymphony.xwork2.DefaultActionProxy.prepare(DefaultActionProxy.java:186)

	at org.apache.struts2.impl.StrutsActionProxyFactory.createActionProxy(StrutsActionProxyFactory.java:41)

	at org.apache.struts2.dispatcher.Dispatcher.serviceAction(Dispatcher.java:494)

	at org.apache.struts2.dispatcher.FilterDispatcher.doFilter(FilterDispatcher.java:419)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)

	at com.pml.encoding.EncodingFilter.doFilter(EncodingFilter.java:36)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)

	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:228)

	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)

	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)

	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:104)

	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)

	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:216)

	at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)

	at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:634)

	at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:445)

	at java.lang.Thread.run(Thread.java:619)

pmlxp 2010-05-19

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7楼的大哥
那 <s:form action="users!save.action" method="post">
也要改为users_save
好像也报错耶500

colin_pxx 2010-05-19

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<struts>
<package name="default" namespace="/" extends="struts-default">
<action name="users" class="com.pml.action.UsersAction">
<result name="success">
/success.jsp
</result>
<result name="error">
/error.jsp
</result>
<result name="list">/users!method=save.action</result>
</action>
</package>
</struts>
这里action name="users"改成name="users_"
<s:form action="users!save.action" method="post">
改成action="users_save"这里是指name为"users_"对应的"UsersAction"对应的save方法
不是你的action

redlotus_lyn 2010-05-19

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1>.设置struts.enable.DynamicMethodInvocation = true

2>.<result name="list">/users!save.action</result>

pmlxp 2010-05-19

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还差一个action
UsersAction





package com.pml.action;





import java.util.List;



import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpSession;



import org.apache.struts2.interceptor.ServletRequestAware;



import com.opensymphony.xwork2.ActionSupport;

import com.pml.biz.UsersBiz;

import com.pml.entity.Users;



public class UsersAction extends ActionSupport implements ServletRequestAware{

	private int id;

	private String usersName;

	private String usersPassword;

	private int relation;

	private HttpServletRequest request = null;



	public int getRelation() {

		return relation;

	}



	public void setRelation(int relation) {

		this.relation = relation;

	}



	public int getId() {

		return id;

	}



	public void setId(int id) {

		this.id = id;

	}



	public String getUsersName() {

		return usersName;

	}



	public void setUsersName(String usersName) {

		this.usersName = usersName;

	}



	public String getUsersPassword() {

		return usersPassword;

	}



	public void setUsersPassword(String usersPassword) {

		this.usersPassword = usersPassword;

	}



	public String select() throws Exception {

		UsersBiz ub=new UsersBiz();

		List list=ub.selectAll();

		request.setAttribute("users", list);

		return null;

	}



	public String check() throws Exception {

		if ("pml".equals(this.getUsersName())) {

			return ("success");

		} else {

			return ("error");

		}

	}

	

	public String save() throws Exception {

System.out.println("/////////////////////////////////////////////////////////////");

		Users user = new Users();

		UsersBiz ub=new UsersBiz();

		user.setUsersName(request.getParameter("usersName"));	

System.out.print(request.getParameter("usersName"));

		user.setUsersPassword(request.getParameter("usersPassword"));

		int count=ub.insert(user);

		if(count>0){

			return ("list");

		}

		else{

			return ("error");

		}

	}



	public void setServletRequest(HttpServletRequest request) {

		this.request=request;

	}



}

pmlxp 2010-05-19

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我也知道是配置
帮我看看
这是struts.xml





<?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>

	<package name="default" namespace="/" extends="struts-default">

		<action name="users" class="com.pml.action.UsersAction">

			<result name="success">

				/success.jsp

			</result>

			<result name="error">

				/error.jsp

			</result>

			<result name="list">/users!method=save.action</result>

		</action>

	</package>

</struts>

这是页面





<%@ page language="java" contentType="text/html; charset=ISO-8859-1"

    pageEncoding="GBK"%>

<%@ taglib uri="/struts-tags" prefix="s" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">

<html>

<head>

<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">

<title>Insert title here</title>

</head>

<body>



    <s:form action="users!save.action" method="post">

	<s:textfield name="usersName" label="User Name" />

	<s:password name="usersPassword" label="Password" />

	<s:submit value="添加" />

    </s:form>

</body>

</html>