通过代码示例跟我学Struts框架——利用Eclipse创建Struts应用示例(第6部分)

目录1.1利用Eclipse创建Struts应用示例（第6部分） (2)1.1.1体验多个表单对应一个ActionForm组件 (2)1.1.2修改配置文件struts-config_userManage.xml中的配置项目 (9)1.1.3修改本实例项目中的各个表示层的JSP页面 (10)1.1.4应用DynaActionForm组件技术 (12)1.1.5对我们前面的DynaActionForm类进行定制 (16)1.1.6将多个类似的Action类合成在一个Action类中 (22)1.1.7利用DispatchAction类的技术来实现自动分发请求 (28)1.1利用Eclipse创建Struts应用示例（第6部分）1.1.1体验多个表单对应一个ActionForm组件1、新增一个ActionForm组件（1）设置struts-config_userManage.xml文件可以可视化编辑，文件关联（2）然后再打开struts-config_userManage.xml文件，利用可视化方式添加一个UserInfoActionForm对象名称为userInfoActionForm、基类为org.apache.struts.action.ActionForm，本类为erInfoActionForm（3）在该UserInfoActionForm类中添加如下的成员属性String userNameString userPassWordString departAdminLevelString confirmPassWordString userAdminLevelString userDepartmentString userImageString formType2、编程该ActionForm组件package com.px1987.sshproject.form;import org.apache.struts.action.ActionForm; import org.apache.struts.action.ActionErrors; import org.apache.struts.action.ActionMapping;import javax.servlet.http.HttpServletRequest;import org.apache.struts.action.*;public class UserInfoActionForm extends ActionForm { private String confirmPassWord;private String departAdminLevel;private String formType;private String userAdminLevel;private String userDepartment;private String userImage;private String userName;private String userPassWord;public String getConfirmPassWord() {return confirmPassWord;}public void setConfirmPassWord(String confirmPassWord) { this.confirmPassWord = confirmPassWord;}public void setUserPassWord(String userPassWord) {erPassWord = userPassWord;}public void setUserName(String userName) {erName = userName;}public void setUserImage(String userImage) {erImage = userImage;}public void setUserDepartment(String userDepartment) {erDepartment = userDepartment;}public void setUserAdminLevel(String userAdminLevel) { erAdminLevel = userAdminLevel;}public void setFormType(String formType) {this.formType = formType;}public void setDepartAdminLevel(String departAdminLevel) { this.departAdminLevel = departAdminLevel;}public String getDepartAdminLevel() {return departAdminLevel;}public String getFormType() {return formType;}public String getUserAdminLevel() {return userAdminLevel;}public String getUserDepartment() {return userDepartment;}public String getUserImage() {return userImage;}public String getUserName() {return userName;}public String getUserPassWord() {return userPassWord;}public ActionErrors validate(ActionMapping actionMapping,HttpServletRequest httpServletRequest) { ActionErrors actionErrors=new ActionErrors();int formTypeDigit=Integer.parseInt(formType);switch(formTypeDigit){case 1: //是登录吗？actionErrors=validateUserLogin(actionMapping,httpServletRequest);break;case 2: //是注册吗？actionErrors=validateUserRegister(actionMapping,httpServletRequest);break;case 3: //是修改吗？actionErrors=validateUserUpdate(actionMapping,httpServletRequest);break;}return actionErrors;}public ActionErrors validateUserLogin(ActionMapping actionMapping,HttpServletRequest httpServletRequest) { ActionErrors actionErrors=new ActionErrors();if((userName==null)||(userName=="")||(userName.length()==0)){actionErrors.add("userName",new ActionMessage("userNameEmpty"));}else if((userPassWord==null)||(userPassWord=="")||(userPassWord.length()==0)){ actionErrors.add("userPassWord",new ActionMessage("userPassWordEmpty"));}return actionErrors;}public ActionErrors validateUserRegister(ActionMapping actionMapping,HttpServletRequest httpServletRequest) { ActionErrors actionErrors=new ActionErrors();if((userName==null)||(userName=="")||(userName.length()==0)){actionErrors.add("userName",new ActionMessage("userNameEmpty"));}else if((userPassWord==null)||(userPassWord=="")||(userPassWord.length()==0)){ actionErrors.add("userPassWord",new ActionMessage("userPassWordEmpty"));}return actionErrors;}public ActionErrors validateUserUpdate(ActionMapping actionMapping,HttpServletRequest httpServletRequest) { ActionErrors actionErrors=new ActionErrors();if((userName==null)||(userName=="")||(userName.length()==0)){actionErrors.add("userName",new ActionMessage("userNameEmpty"));}else if((userPassWord==null)||(userPassWord=="")||(userPassWord.length()==0)){ actionErrors.add("userPassWord",new ActionMessage("userPassWordEmpty"));}return actionErrors;}public void reset(ActionMapping actionMapping,HttpServletRequest servletRequest) {confirmPassWord="";departAdminLevel="";formType="";userAdminLevel="";userDepartment="";userImage="";userName="";userPassWord="";}}1.1.2修改配置文件struts-config_userManage.xml中的配置项目<?xml version="1.0" encoding="UTF-8"?><!DOCTYPE struts-config PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 1.2//EN" "/dtds/struts-config_1_2.dtd"><struts-config><form-beans ><form-bean name="userLoginForm" type="erLoginForm" /> <form-bean name="userRegisterForm" type="erRegisterForm" /><form-bean name="userInfoActionForm" type="erInfoActionForm" /></form-beans><action-mappings ><action attribute="userLoginForm" input="/index.jsp" name="userInfoActionForm"path="/userLoginURI" scope="request"type="erLoginAction"><forward name="loginSuccess" path="/loginSuccess.jsp" /><forward name="loginFailure" path="/loginFailure.jsp" /></action><action attribute="userRegisterForm" input="/userManage/userRegister.jsp"name="userInfoActionForm"path="/userRegister" scope="request"type="erRegisterAction"><forward name="registerFailure" path="/userManage/registerFailure.jsp" /><forward name="registerSuccess" path="/userManage/registerSuccess.jsp" /> </action></action-mappings></struts-config>1.1.3修改本实例项目中的各个表示层的JSP页面1、在用户登录页面中添加下面的标签<html:hidden property="formType" value="1"/>2、在用户注册页面中添加下面的标签<html:hidden property="formType" value="2"/>3、修改项目中的各个Action类中的表单对象的类型转换UserLoginForm userLoginForm = (UserLoginForm) form;UserInfoActionForm userLoginForm = (UserInfoActionForm) form;或者4、对现在的系统进行测试（1）继续输入http:/127.0.0.1:8080/SSHStrutsWeb/userManage/userLogin.jsp（2）将应该出现下面的结果（3）如果出现错误时，也能够正确地进行错误类型的判断（4）如果出现错误时，也能够正确地进行错误类型的判1.1.4应用DynaActionForm组件技术1、DynaActionForm技术实现简介Struts框架中的表单可分为两种：一种是ActionForm类型，另外一种是DynaActionForm。