初学Struts2.0笔记

1.
错误信息：

Unable to load configuration. - bean - 

jar:file:/D:/eclipseworkspace/.metadata/.plugins/org.eclipse.wst.server.core/tmp0/wtpwebapps/struts2/WEB-INF/lib/struts2-

core-2.1.6.jar!/struts-default.xml:46:178

解决办法：
加入两个jar包(commons-io.jar commons-fileupload.jar)

2.
错误信息：

2009-08-06 14:23:37,796 WARN [org.apache.struts2.components.ServletUrlRenderer] - No configuration found for the specified 

action: 'login' in namespace: ''. Form action defaulting to 'action' attribute's literal value.
2009-08-06 14:23:40,109 WARN [org.apache.struts2.components.ServletUrlRenderer] - No configuration found for the specified 

action: 'login' in namespace: ''. Form action defaulting to 'action' attribute's literal value.
2009-08-06 14:23:42,828 WARN [org.apache.struts2.dispatcher.Dispatcher] - Could not find action or result
There is no Action mapped for namespace / and action name login. - [unknown location]

解决办法：
将struts.xml文件放在WEB-INF/classes目录下

补充：
struts.xml

   
     
     /welcome.jsp
     /index.jsp
   

jsp页面

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


   


   
   
    

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<%@ taglib uri="struts-tags" prefix="s"%>






Welcome ${member.name}, your password is ${member.password}.

cn.devon.action.LoginAction类

package cn.devon.action;

import org.apache.struts2.ServletActionContext;

import cn.devon.entity.Member;

import com.opensymphony.xwork2.ActionSupport;

public class LoginAction extends ActionSupport {

	private String message;

	private Member member;

	public Member getMember() {
		return member;
	}

	public void setMember(Member member) {
		this.member = member;
	}

	public String getMessage() {
		return message;
	}

	public void setMessage(String message) {
		this.message = message;
	}

	public String login(){
		System.out.println("------login--------");
		if("1".equals(member.getName()) && "1".equals(member.getPassword())){
			ServletActionContext.getRequest().setAttribute("member", member);
			return "loginSuccess";
		}
		message = "Username or password wrong.";
		return "input";
	}
}

cn.devon.entity.Member类

package cn.devon.entity;

public class Member {
	private int id;

	private String name;

	private String password;

	public int getId() {
		return id;
	}

	public void setId(int id) {
		this.id = id;
	}

	public String getName() {
		return name;
	}

	public void setName(String name) {
		this.name = name;
	}

	public String getPassword() {
		return password;
	}

	public void setPassword(String password) {
		this.password = password;
	}	
}