手把手教你在Eclipse中配置开发Struts

﹤?xml version="1.0" encoding="UTF-8"?>
﹤!DOCTYPE struts-config PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 1.2//EN" "http://struts.apache.org/dtds/struts-config_1_2.dtd">

﹤struts-config>

﹤data-sources />

﹤form-beans >

﹤!--这里是ActionForm的配置信息，ActionForm Bean的name为logonForm，对应的类为com.mystruts.struts.form.LogonForm-->

﹤form-bean name="logonForm" type="com.mystruts.struts.form.LogonForm" />

﹤/form-beans>

﹤global-exceptions />

﹤global-forwards />

﹤action-mappings >

﹤!--这里是Action组件的配置信息，描述了从特定的请求路径到响应的Action的映射-->

﹤!--attribute设置Action关联的ActionForm在request或者session范围内的key.就是在request或者session共享内的名称-->

﹤!--input指定包含表单的URL,当表单验证失败的时候发送的URL-->

﹤!--name指定和该Action关联的Form名字.该名字必须是在form-bean中定义过的,可写可不写-->

﹤!--path指定请求访问Action的路径，必须以/开头-->

﹤!--scope指定Form的存在范围，例如request-->

﹤!--type指定Action组件对应的类-->

﹤action

attribute="logonForm"

input="/form/logon.jsp"

name="logonForm"

path="/logon"

scope="request"

type="com.mystruts.struts.action.LogonAction">

﹤!--这里是forward，即局部转发配置信息，登录成功后转向/success.jsp，name为logon_sc-->

﹤forward

name="logon_sc"

path="/success.jsp"

/>

﹤/action>

﹤/action-mappings>

﹤!--这里是消息资源文件的配置信息，用来配置Resource Bundle.用于存放本地文本消息文件。parameter指定文件名，不包含后缀名。-->

﹤message-resources parameter="com.mystruts.struts.ApplicationResources" />

﹤/struts-config>

# 这里是注释
logon.page.title = 我的第一个Struts

logon.username.error = 请输入用户名！

logon.userpassword.error = 请输入密码！

logon.badusername.error = 用户名不能为admin！

logon.baduserpassword.error = 密码不能为123456！

logon.success = 欢迎您登录！

﹤%@ page contentType="text/html;charset=UTF-8" language="java"%>
﹤%@ taglib uri="/WEB-INF/struts-bean.tld" prefix="bean"%>

﹤%@ taglib uri="/WEB-INF/struts-html.tld" prefix="html"%>

﹤%@ taglib uri="/WEB-INF/struts-logic.tld" prefix="logic"%>

﹤html>

﹤head>

﹤!--title使用客户化标签，文本内容对应的是消息资源文件中logon.page.title的值-->

﹤title>﹤bean:message key="logon.page.title"/>﹤/title>

﹤/head>

﹤body>

﹤html:form action="/logon" method="POST">

用户名：﹤html:text property="username"/>﹤html:errors property="username"/>﹤br/>

密　码：﹤html:password property="userpassword"/>﹤html:errors property="userpassword"/>﹤br/>

﹤html:submit value="登录"/>﹤html:reset value="取消"/>

﹤/html:form>

﹤/body>

﹤/html>　

﹤%@ page language="java" pageEncoding="UTF-8"%>
﹤%@ taglib uri="/WEB-INF/struts-bean.tld" prefix="bean"%>

﹤%@ taglib uri="/WEB-INF/struts-html.tld" prefix="html"%>

﹤%@ taglib uri="/WEB-INF/struts-logic.tld" prefix="logic"%>

﹤html:html lang="true">

﹤head>

﹤html:base />

﹤title>success.jsp﹤/title>

﹤/head>

﹤body>

﹤logic:present name="savelogon" scope="request">

﹤bean:write name="savelogon" property="username"/>

﹤bean:message key="logon.success"/>

﹤/logic:present>

﹤/body>

﹤/html:html>

package com.mystruts.struts.form;

import javax.servlet.http.HttpServletRequest;

import org.apache.struts.action.ActionErrors;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionMapping;
import org.apache.struts.action.ActionMessage;

/**
* MyEclipse Struts
* Creation date: 02-27-2006
*
* XDoclet definition:
* @struts.form name="logonForm"
*/
public class LogonForm extends ActionForm {

// --------------------------------------------------------- Instance Variables

/** userpassword property */
private String userpassword;

/** username property */
private String username;

// --------------------------------------------------------- Methods

/**
* Method validate
* @param mapping
* @param request
* @return ActionErrors
*/
//用于表单验证的validate方法
public ActionErrors validate(
ActionMapping mapping,
HttpServletRequest request) {

//声明一个ActionErrors对象
ActionErrors errors = new ActionErrors();

//如果用户名验证失败，将ActionMessage对象保存到ActionErrors对象errors中。logon.username.error对应消息资源文件中的logon.username.error的值。
if(username==null || username.length()<3){
errors.add("username", new ActionMessage("logon.username.error"));
}

//如果密码验证失败，将ActionMessage对象保存到ActionErrors对象errors中。logon.userpassword.error对应消息资源文件中的logon.userpassword.error的值。
if(userpassword==null || userpassword.length()<3){
errors.add("userpassword", new ActionMessage("logon.userpassword.error"));
}
// TODO Auto-generated method stub

//返回ActionErrors对象errors，Struts框架会把errors保存在request范围内，并将请求转发到视图组件logon.jsp中，通过来显示错误信息
return errors;
}

/**
* Method reset
* @param mapping
* @param request
*/
public void reset(ActionMapping mapping, HttpServletRequest request) {

// TODO Auto-generated method stub
this.username = null;
this.userpassword = null;
}

/**
* Returns the userpassword.
* @return String
*/
public String getUserpassword() {
return userpassword;
}

/**
* Set the userpassword.
* @param userpassword The userpassword to set
*/
public void setUserpassword(String userpassword) {
this.userpassword = userpassword;
}

/**
* Returns the username.
* @return String
*/
public String getUsername() {
return username;
}

/**
* Set the username.
* @param username The username to set
*/
public void setUsername(String username) {
this.username = username;
}

}

package com.mystruts.struts.action;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.struts.action.Action;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
import org.apache.struts.action.ActionMessage;
import org.apache.struts.action.ActionMessages;

import com.mystruts.struts.SaveLogon;
import com.mystruts.struts.form.LogonForm;

/**
* MyEclipse Struts
* Creation date: 02-27-2006
*
* XDoclet definition:
* @struts.action path="/logon" name="logonForm" input="/form/logon.jsp" scope="request" validate="true"
* @struts.action-forward name="logon_sc" path="/success.jsp"
*/
public class LogonAction extends Action {

// --------------------------------------------------------- Instance Variables

// --------------------------------------------------------- Methods

/**
* Method execute
* @param mapping
* @param form
* @param request
* @param response
* @return ActionForward
*/
//通过ActionForm Bean的验证后，Struts框架会自动调用execute方法
public ActionForward execute(
ActionMapping mapping,
ActionForm form,
HttpServletRequest request,
HttpServletResponse response) {
// TODO Auto-generated method stub

//获得表单数据中的username
String username = (String)((LogonForm)form).getUsername();

//获得表单数据中的userpassword
String userpassword = (String)((LogonForm)form).getUserpassword();

//定义非法用户名
String badusername = "admin";

//定义非法密码
String baduserpassword = "123456";

//声明一个ActionMessages对象
ActionMessages errors = new ActionMessages();

if(badusername.equals(username)){

//如果用户名验证失败，将ActionMessage对象保存到ActionMessages对象errors中。logon.badusername.error对应消息资源文件中的logon.badusername.error的值。
errors.add("username",new ActionMessage("logon.badusername.error",badusername));

//保存ActionMessages对象errors到request范围。
saveErrors(request,errors);

//返回ActionForward对象，Struts框架会把请求转发到视图组件logon.jsp中，通过来显示错误信息。
return(new ActionForward(mapping.getInput()));
}

if(userpassword.equals(baduserpassword)){
errors.add("userpassword",new ActionMessage("logon.baduserpassword.error",baduserpassword));
saveErrors(request,errors);
return(new ActionForward(mapping.getInput()));
}

//定义模型组件SaveLogon
SaveLogon sl = new SaveLogon();
sl.setUsername(username);
sl.setUserpassword(userpassword);
sl.saveToDb();

//控制器组件将SavaLogon对象保存到request范围，savalogon对应视图组件success.jsp中﹤?xml:namespace prefix = login />﹤login:present>标签的name以及﹤?xml:namespace prefix = bear />﹤bear:write>标签的name
request.setAttribute("savelogon",sl);

//清除request范围内的ActionForm Bean，因为后面的请求已经不需要了
request.removeAttribute(mapping.getAttribute());

//控制器组件将信息转交到视图组件logon.jsp，logon_sc对应struts-config.xml中的forward元素的name
return(mapping.findForward("logon_sc"));
}

}

package com.mystruts.struts;

/**
* @author Administrator
*
*/
public class SaveLogon {

private String username = null;
private String userpassword = null;

public void setUsername(String username){
this.username = username;
}

public String getUsername(){
return this.username;
}

public void setUserpassword(String userpassword){
this.userpassword = userpassword;
}

public String getUserpassword(){
return this.userpassword;
}

public void saveToDb(){

}

}