《基于J2EE Struts框架的課程設(shè)計(jì)實(shí)訓(xùn)項(xiàng)目——BBS論壇系統(tǒng)——構(gòu)建控制層中實(shí)現(xiàn)頁面跳轉(zhuǎn)的 Action程序類》由會員分享，可在線閱讀，更多相關(guān)《基于J2EE Struts框架的課程設(shè)計(jì)實(shí)訓(xùn)項(xiàng)目——BBS論壇系統(tǒng)——構(gòu)建控制層中實(shí)現(xiàn)頁面跳轉(zhuǎn)的 Action程序類（29頁珍藏版）》請?jiān)谘b配圖網(wǎng)上搜索。
1、楊教授大學(xué)堂 精心創(chuàng)作的優(yōu)秀程序員 職業(yè)提升必讀系列資料
基于J2EE Struts框架的課程設(shè)計(jì)實(shí)訓(xùn)項(xiàng)目——《BBS論壇系統(tǒng)》——構(gòu)建控制層中實(shí)現(xiàn)頁面跳轉(zhuǎn)的 Action程序類
1.1.1 頁面跳轉(zhuǎn)的 Action程序類PageForwordAction
1、添加一個實(shí)現(xiàn)頁面跳轉(zhuǎn)的 Action類PageForwordAction
（1）新建一個Action類
1) Path為/pageForwordAction
2) 基類：org.apache.struts.actions.DispatchAction
3) 類型：com.px1987.webbbs.action.Pag
2、eForwordAction
4) /WebBBS/WebRoot/WEB-INF/struts-config_pageForward.xml
（2）并在parameter中輸入action
（3）并為它添加各個 Forward目標(biāo)
（4）也就是下面的狀態(tài)
4、name="showIndexContent" path="goWebBBSIndex" />
5、
2、編程該Action類
package com.px1987.webbbs.action;
import java.io.UnsupportedEncodingException;
import ja
8、va.util.ArrayList;
import javax.servlet.ServletContext;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apa
9、che.struts.action.ActionMapping;
import org.apache.struts.actions.DispatchAction;
import org.apache.struts.validator.DynaValidatorForm;
import com.px1987.webbbs.constant.WebBankAllConstants;
import com.px1987.webbbs.exception.WebBBSException;
import com.px1987.webbbs.model.BBSInfoManageInterfac
10、e;
import com.px1987.webbbs.model.BBSInfoVO;
import com.px1987.webbbs.model.BBSTitleVO;
import com.px1987.webbbs.model.UserInfoManageInterface;
import com.px1987.webbbs.model.UserInfoVO;
public class PageForwordAction extends DispatchAction {
BBSInfoManageInterface bbsInfoManagerBean=null;
11、UserInfoManageInterface userInfoManageBean=null;
public void setBbsInfoManagerBean(BBSInfoManageInterface bbsInfoManagerBean) {
this.bbsInfoManagerBean = bbsInfoManagerBean;
}
public void setUserInfoManageBean(UserInfoManageInterface userInfoManageBean) {
this.userInfoManageBean = userIn
12、foManageBean;
}
public PageForwordAction() {
//本構(gòu)造方法是在利用 Spring IOC獲得目標(biāo)對象時被應(yīng)用
super();
}
/*
String bbsInfoManageBeanClassName=null;
String userInfoManageBeanClassName=null;
public PageForwordAction() throws WebBBSException{
//本構(gòu)造方法是在利用 可配置化的工廠時被應(yīng)用
super();
newUserAndBBS
13、ManageBean();
}
public void newUserAndBBSManageBean() throws WebBBSException{
bbsInfoManageBeanClassName=ClassNameConfig.
getProperty("bbsInfoManageImple.className");
bbsInfoManagerBean=BBSInfoManageFactory.newBBSInfoManageBean(
bbsInfoManageBeanClassName);
userInfoManageBeanClassNam
14、e=
ClassNameConfig.getProperty("userInfoManageImple.className");
userInfoManageBean=UserInfoManageFactory.
newUserInfoManageBean(userInfoManageBeanClassName);
}
*/
public ActionForward indexShowPattern_BarMethod(ActionMapping mapping, ActionForm form,HttpServletRequest request, HttpServle
15、tResponse response){
return mapping.findForward("showIndexContent_BarMethod");
}
public ActionForward indexShowPattern_PlainMethod(ActionMapping mapping, ActionForm form,HttpServletRequest request, HttpServletResponse response){
return mapping.findForward("showIndexContent_PlainMethod");
16、 }
public ActionForward indexLeftMenuBar(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response){
return mapping.findForward("showIndexLeftMenuBar");
}
public ActionForward indexSwitchMenu(ActionMapping mapping, ActionForm form,
HttpServletR
17、equest request, HttpServletResponse response){
return mapping.findForward("showIndexSwitchMenu");
}
public ActionForward indexDefaultContent(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response){
return mapping.findForward("showIndexDefaultCo
18、ntent");
}
public ActionForward showIndexContent(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response){
ArrayList titleInfoVOArrayList_10 = null;
ArrayList allHothitsBBSInfoVOArrayList = null;
int totalCounterOfTitleInfo;
int totalCount
19、erOfTodayBBSInfo;
int titleCounte=10; //只返回前10個分類元素對象
try{
// newUserAndBBSManageBean(); //創(chuàng)建用戶和BBS信息管理業(yè)務(wù)類的對象實(shí)例
titleInfoVOArrayList_10 = bbsInfoManagerBean.doGetBBSTitleInfo(titleCounte);
}
catch (WebBBSException e) {
request.setAttribute("errorText", "出現(xiàn)如下的錯誤：" +e.getMess
20、age());
return mapping.findForward("showWebAppError");
}
//獲得總的分類數(shù)目
try{
totalCounterOfTitleInfo = bbsInfoManagerBean.doGetTotalBBSTitleInfoCounter();
}
catch (WebBBSException e){
request.setAttribute("errorText", "出現(xiàn)如下的錯誤：" +e.getMessage());
return mapping.findFo
21、rward("showWebAppError");
}
int hitBBSCounte=10; //只返回前10個熱門的BBS信息
try{
allHothitsBBSInfoVOArrayList =
bbsInfoManagerBean.doGetBBSInfoByHits(hitBBSCounte);
}
catch (WebBBSException e){
request.setAttribute("errorText", "出現(xiàn)如下的錯誤：" +e.getMessage());
return mapping.f
22、indForward("showWebAppError");
}
/*
下面的代碼是獲得今日帖數(shù)目
*/
ArrayList newBBSInfoList = null;
String keyText = "";
java.util.Date rightNow = new java.util.Date();
keyText = (1900 + rightNow.getYear()) + "-" + (rightNow.getMonth() + 1) +
"-" + rightNow.g
23、etDate();
/*
try{
// 此時在ArrayList中將包含有今天的新貼（BBSInfoVO類型）的對象集合
newBBSInfoList = bbsInfoManageImple.doGetTodayAllBBSInfo();
}
catch (WebBBSException e){
request.setAttribute("errorText", "出現(xiàn)如下的錯誤：" +e.getMessage());
oneRequestDispatcher=request.getRequestDispatcher("/
24、errorDeal/showWebAppError.jsp");
oneRequestDispatcher.forward(request, response);
return;
}
totalCounterOfTodayBBSInfo = newBBSInfoList.size();
*/
try {
totalCounterOfTodayBBSInfo =bbsInfoManagerBean.doGetTodayAllBBSInfoCount();
}
catch (WebBBSExcepti
25、on e){
request.setAttribute("errorText", "出現(xiàn)如下的錯誤：" +e.getMessage());
return mapping.findForward("showWebAppError");
}
int totalBBSInfoCounter = 0;
try{
totalBBSInfoCounter = bbsInfoManagerBean.doGetTotalBBSInfoCounter();
}
catch (WebBBSException e){
26、 request.setAttribute("errorText", "出現(xiàn)如下的錯誤：" +e.getMessage());
return mapping.findForward("showWebAppError");
}
int totalUserCounter = 0;
try {
totalUserCounter = userInfoManageBean.doGetTotalRegisterUserCounter();
}
catch (WebBBSException e){
request.s
27、etAttribute("errorText", "出現(xiàn)如下的錯誤：" +e.getMessage());
return mapping.findForward("showWebAppError");
}
UserInfoVO oneMaxIDUserInfoVO = null;
try{
oneMaxIDUserInfoVO = userInfoManageBean.doGetMaxIDUserInfo();
}
catch (WebBBSException e){
request.setAttrib
28、ute("errorText", "出現(xiàn)如下的錯誤：" +e.getMessage());
return mapping.findForward("showWebAppError");
}
request.setAttribute("oneMaxIDUserInfoVO", oneMaxIDUserInfoVO);
request.setAttribute("totalUserCounter",
new Integer(totalUserCounter).toString(
29、));
request.setAttribute("totalBBSInfoCounter",
new Integer(totalBBSInfoCounter).toString());
request.setAttribute("titleInfoVOArrayList_10", titleInfoVOArrayList_10);
request.setAttribute("totalCounterOfTitleInfo",
new In
30、teger(totalCounterOfTitleInfo). toString());
request.setAttribute("totalCounterOfTodayBBSInfo",
new Integer(totalCounterOfTodayBBSInfo). toString());
request.setAttribute("allHothitsBBSInfoVOArrayList",
allHothitsBBSInfoVOArrayList);
return mapping.f
31、indForward("showIndexContent");
}
public ActionForward showRegisterForm(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response){
this.saveToken(request); //(1)
return mapping.findForward("showRegisterForm");
}
public ActionForward show
32、UserLogoutForDWR(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response){
HttpSession session=request.getSession();
session.removeAttribute("oneUserInfoVO");
session.invalidate();
return null;
}
public ActionForward showUserLogout(ActionM
33、apping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response) {
HttpSession session=request.getSession();
session.removeAttribute("oneUserInfoVO");
// session.invalidate();
request.setAttribute("errorText","您已經(jīng)從本系統(tǒng)中在線退出，因此您將失除所有的權(quán)限。
如果您還需要做其它的行為，請重新
34、登錄！");
return mapping.findForward("showWebAppError");
}
public ActionForward showUpdateUserInfo(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response) {
String targetPage=null;
HttpSession session=request.getSession();
//下面為跳轉(zhuǎn)到修改用戶的信
35、息的頁面中
Object oneUserInfoVOObject=session.getAttribute("oneUserInfoVO");
UserInfoVO oneUserInfoVO=(UserInfoVO)oneUserInfoVOObject;
Integer type_User_Admin=oneUserInfoVO.getType_User_Admin();
switch(type_User_Admin.intValue()) {
case 1: //轉(zhuǎn)到前臺用戶
targetPage="showUpdateUse
36、rInfo";
break;
case 2: //轉(zhuǎn)到后臺管理員用戶
targetPage="showUpdateAdminUserInfo";
break;
}
return mapping.findForward(targetPage);
}
public ActionForward doShowOnLineUserInfo(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse re
37、sponse) {
return mapping.findForward("showOnLineUserInfo");
}
public ActionForward doGetUserPassWord(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response) {
return mapping.findForward("doGetUserPassWord");
}
public ActionForward goSendOrP
38、reView(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response) {
HttpSession session = request.getSession();
UserInfoVO oneUserInfoVO=(UserInfoVO)session.getAttribute("oneUserInfoVO");
String userName=oneUserInfoVO.getUserName();
String userI
39、D=oneUserInfoVO.getId();
DynaValidatorForm pageForwordActionForm = (DynaValidatorForm) form;
String bbsTitleID=(String)pageForwordActionForm.get("bbsTitleID");
String bbsTitleText=(String)pageForwordActionForm.get("bbsTitleText");
try{
/**
由于bbsTitleText參數(shù)是通過get方法傳遞來的，因此ActionServl
40、et無法進(jìn)行正確遞編碼轉(zhuǎn)換，需要手動轉(zhuǎn)換
*/
bbsTitleText=new String(bbsTitleText.getBytes("ISO-8859-1"),"gb2312");
}
catch (UnsupportedEncodingException e){
request.setAttribute("errorText", "在PageForwordAction類中showDigestBBSInfo方法出現(xiàn)如下的錯誤：" +e.getMessage());
return mapping.findForward("showWebApp
41、Error");
}
request.setAttribute("userName",userName);
request.setAttribute("userID",userID);
request.setAttribute("bbsTitleID",bbsTitleID);
request.setAttribute("bbsTitleText",bbsTitleText);
return mapping.findForward("doSendBBSInfo");
}
public ActionForward goReplyOrPreView(Ac
42、tionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response) {
HttpSession session = request.getSession();
UserInfoVO oneUserInfoVO=(UserInfoVO)session.getAttribute("oneUserInfoVO");
String userName=oneUserInfoVO.getUserName();
String userID=oneUser
43、InfoVO.getId();
DynaValidatorForm pageForwordActionForm = (DynaValidatorForm) form;
String bbsTitleID=(String)pageForwordActionForm.get("bbsTitleID");
String bbsTitleText=(String)pageForwordActionForm.get("bbsTitleText");
String bbsID=(String)pageForwordActionForm.get("bbsID");
Str
44、ing bbsTitle=(String)pageForwordActionForm.get("bbsTitle");
try{
/**
由于bbsTitleText參數(shù)是通過get方法傳遞來的，因此ActionServlet無法進(jìn)行正確遞編碼轉(zhuǎn)換，需要手動轉(zhuǎn)換
*/
bbsTitleText=new String(bbsTitleText.getBytes("ISO-8859-1"),"gb2312");
}
catch (UnsupportedEncodingException e){
request.setAttribute("errorTex
45、t", "在PageForwordAction類中showDigestBBSInfo方法出現(xiàn)如下的錯誤：" +e.getMessage());
return mapping.findForward("showWebAppError");
}
request.setAttribute("userName",userName);
request.setAttribute("userID",userID);
request.setAttribute("bbsTitle",bbsTitle);
request.setAttribute("bbsID",bbs
46、ID);
request.setAttribute("bbsTitleID",bbsTitleID);
request.setAttribute("bbsTitleText",bbsTitleText);
return mapping.findForward("doReplyBBSInfo");
}
public ActionForward doSystemManage(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response
47、) {
return mapping.findForward("doSystemManage");
}
public ActionForward doReplyBBSInfo(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response){
return mapping.findForward("doReplyBBSInfo");
}
public ActionForward showAllClassInfo(ActionMap
48、ping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response) {
// newUserAndBBSManageBean(); //創(chuàng)建用戶和BBS信息管理業(yè)務(wù)類的對象實(shí)例
ArrayList allBBSTitleVOArrayList=null;
try{
allBBSTitleVOArrayList=bbsInfoManagerBean.doGetBBSTitleInfo();
}
catch(WebBBSException e)
49、{
request.setAttribute("errorText", "出現(xiàn)如下的錯誤：" +e.getMessage());
return mapping.findForward("showWebAppError");
}
request.setAttribute("allBBSTitleVOArrayList",allBBSTitleVOArrayList);
return mapping.findForward("showAllBBSClassInfo");
}
public ActionForward showAllHotBB
50、SInfo(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response) {
ArrayList allBBSInfoVOList = null;
int totalBBSInfoCounter, totalBBSInfoPageCounter;
// newUserAndBBSManageBean(); //創(chuàng)建用戶和BBS信息管理業(yè)務(wù)類的對象實(shí)例
try{ //獲得總數(shù)
int hotCounter=1;
51、 totalBBSInfoCounter = bbsInfoManagerBean.
doGetTotalHotBBSInfoCounter(hotCounter);
}
catch (WebBBSException e) {
request.setAttribute("errorText", "出現(xiàn)如下的錯誤：" +e.getMessage());
return mapping.findForward("showWebAppError");
}
if(totalBBSInfoCounter==0){
request.setA
52、ttribute("errorText", "很對不起！目前系統(tǒng)中還沒有產(chǎn)生熱門信息帖，我們會繼續(xù)努力的！");
return mapping.findForward("showWebAppError");
}
int currentPage = 1; //當(dāng)前正在顯示的頁數(shù)目
int firstResult = (currentPage - 1) * WebBankAllConstants.hotBBSCounterPerPageDigit; //根據(jù)當(dāng)前的頁數(shù)計(jì)算出的開始的行號（從0 計(jì)數(shù)）
totalBBSInfoPageCount
53、er = (totalBBSInfoCounter +
WebBankAllConstants.hotBBSCounterPerPageDigit - 1)
/WebBankAllConstants.hotBBSCounterPerPageDigit;
int actualHotBBSCounterPerPageDigit=
WebBankAllConstants.hotBBSCounterPerPageDigit;
if (totalBBSInfoCounter < WebBankAllConstants.hotBBS
54、CounterPerPageDigit){
actualHotBBSCounterPerPageDigit = totalBBSInfoCounter;
}
try{
allBBSInfoVOList = bbsInfoManagerBean.
doGetBBSInfoByHits(firstResult,actualHotBBSCounterPerPageDigit);
}
catch (WebBBSException e){
request.setAttribute("errorText", "出現(xiàn)如下的錯誤：" +e.ge
55、tMessage());
return mapping.findForward("showWebAppError");
}
request.setAttribute("allBBSInfoVOList", allBBSInfoVOList);
request.setAttribute("totalBBSInfoPageCounter",
new Integer(totalBBSInfoPageCounter).toString());
request.setAttribute("currentPage", new Integer(
56、currentPage).toString());
return mapping.findForward("showAllHotBBSInfo");
}
public ActionForward showAllBBSInClass(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response){
ArrayList allBBSInfoVOList = null;
int totalBBSInfoCounter, totalBBS
57、InfoPageCounter;
/*
* 本功能是通過get提交的請求，因此不能通過DynaValidatorForm獲得請求的參數(shù)，而只能通過request
*/
String bbsTitleID=request.getParameter("bbsTitleID");
String bbsTitleText=request.getParameter("bbsTitleText");
try{
/**
由于bbsTitleText參數(shù)是通過get方法傳遞來的，因此ActionServlet無法進(jìn)行正確遞編碼轉(zhuǎn)換，需要手動轉(zhuǎn)換
*/
bbsT
58、itleText=new String(bbsTitleText.getBytes("ISO-8859-1"),"gb2312");
}
catch (UnsupportedEncodingException e) {
request.setAttribute("errorText", "在PageForwordAction類中showAllBBSInClass方法出現(xiàn)如下的錯誤：" +e.getMessage());
return mapping.findForward("showWebAppError");
}
// newUserAndBBS
59、ManageBean(); //創(chuàng)建用戶和BBS信息管理業(yè)務(wù)類的對象實(shí)例
try { //獲得總數(shù)
totalBBSInfoCounter = bbsInfoManagerBean.
doGetPageTotalBBSInfoCounterByTitleID(Integer.parseInt(bbsTitleID));
}
catch (WebBBSException e){
request.setAttribute("errorText", "出現(xiàn)如下的錯誤：" +e.getMessage());
return mappin
60、g.findForward("showWebAppError");
}
int currentPage = 1; //當(dāng)前正在顯示的頁數(shù)目
//根據(jù)當(dāng)前的頁數(shù)計(jì)算出的開始的行號（從0 計(jì)數(shù)）
int firstResult = (currentPage - 1) * WebBankAllConstants.objectCounterPerPageDigit;
totalBBSInfoPageCounter = (totalBBSInfoCounter +
WebBankAllConstants.objectCounte
61、rPerPageDigit - 1)
/WebBankAllConstants.objectCounterPerPageDigit;
int actualHotBBSCounterPerPageDigit=
WebBankAllConstants.hotBBSCounterPerPageDigit;
if (totalBBSInfoCounter < WebBankAllConstants.hotBBSCounterPerPageDigit){
actualHotBBSCounterPerPageDigit = totalBBSInfoCounter
62、;
}
try {
allBBSInfoVOList = bbsInfoManagerBean.
doGetPageBBSInfoByTitleID(Integer.parseInt(bbsTitleID),
firstResult,actualHotBBSCounterPerPageDigit);
}
catch (WebBBSException e) {
request.setAttribute("errorText", "出現(xiàn)如下的錯誤：" +e.getMessage());
return mappin
63、g.findForward("showWebAppError");
}
// 下面的代碼是獲得該分類的完整信息（也包括版主信息）
BBSTitleVO oneBBSTitleVO = null;
try{
oneBBSTitleVO = bbsInfoManagerBean.
doGetBBSTitleInfoByTitleID(Integer.parseInt(bbsTitleID));
}
catch (WebBBSException e) {
request.setAttribute("errorText", "出現(xiàn)如下的錯
64、誤：" +e.getMessage());
return mapping.findForward("showWebAppError");
}
request.setAttribute("allBBSInfoVOList", allBBSInfoVOList);
request.setAttribute("bbsTitleID", bbsTitleID);
request.setAttribute("bbsTitleText", bbsTitleText);
request.setAttribute("oneBBSTitleVO", oneBBST
65、itleVO);
request.setAttribute("totalBBSInfoPageCounter",
new Integer(totalBBSInfoPageCounter).toString());
request.setAttribute("currentPage", new Integer(currentPage).toString());
return mapping.findForward("showAllBBSInClass");
}
public ActionForward showOneBBSInfo(ActionMapp
66、ing mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response) {
BBSInfoVO oneBBSInfoVO = null;
ArrayList allBBSReplyInfoListByOneBBS = null;
DynaValidatorForm pageForwordActionForm = (DynaValidatorForm) form;
String bbsID=(String)pageForwordActionForm.get("bbsID"); //獲得該BBS的ID號
//獲得該BBS所在的分類的標(biāo)題文字
String bbsTitleText=(String)pageForwordActionForm.get("bbsTitleText");
//獲得該BBS所在的分類的ID
String bbsTitleID=(String)pageForwordActionForm.
基于J2EE Struts框架的課程設(shè)計(jì)實(shí)訓(xùn)項(xiàng)目——BBS論壇系統(tǒng)——構(gòu)建控制層中實(shí)現(xiàn)頁面跳轉(zhuǎn)的 Action程序類
