这个DEMO供大家一起探讨学习Struts，因为工作太累，没精力给大家解释实现原理。如果看不懂，没关系。只是说明JSP基础还没有到火候，不要心急，回去强化下JSP Servlet,基础扎实了，自然能够看懂我写的代码。这个DEMO借鉴了网上很多前人的经验，在此一并谢谢。
web.xml文件：
Struts-config.xml文件：
"https://www.doczj.com/doc/1413459109.html,/struts/dtds/struts-config_1_1.dtd">
path="/operatorAction" scope="session" type="com.bookshop.action.OperatorAction" validate="false"> path="/operatorAction.do?operator=showPreviousPage"/> redirect="true"/>
tiles-defs文件：
"https://www.doczj.com/doc/1413459109.html,/struts/dtds/tiles-config_1_1.dtd">
camel-define文件：
上面几个文件和struts-bean.tld，struts-html.tld，struts-tiles.tld，struts-logic.tld都一起位于WEB-INF的根目录下面。
以下是三个Action文件：
/*FindRecordAction.java*/
package com.bookshop.action;
import org.apache.struts.action.ActionMapping;
import org.apache.struts.action.ActionForm;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.struts.action.ActionForward;
import com.bookshop.form.FindRecordForm;
import org.apache.struts.action.Action;
import java.util.List;
import java.util.ArrayList;
import com.bookshop.model.Operator;
import com.bookshop.util.PageInfo;
import org.apache.struts.action.ActionErrors;
import org.apache.struts.action.ActionError;
public class FindRecordAction
extends Action {
public ActionForward execute(ActionMapping actionMapping, ActionForm actionForm,
HttpServletRequest servletRequest,
HttpServletResponse servletResponse) {
FindRecordForm findRecordForm = (FindRecordForm) actionForm; String key = findRecordForm.getFindByKey().trim();
String value = findRecordForm.getFindByValue().trim();
List list = new ArrayList();
list = Operator.getRecords(key, value, 0);
servletRequest.getSession().setAttribute("books", list);
if (!list.isEmpty()) {
servletRequest.getSession().setAttribute("pageinfo",
new PageInfo(Operator.
getRecordsNumber(), 1));
}
else {
ActionErrors messages = new ActionErrors();
messages.add(ActionErrors.GLOBAL_MESSAGE,
new ActionError("findrecord.jsp.notfound")); servletRequest.getSession().setAttribute("pageinfo",
new PageInfo(0, 1));
}
return actionMapping.findForward("browser");
}
}
/*GenericAction.java*/
package com.bookshop.action;
import org.apache.struts.action.ActionMapping;
import org.apache.struts.action.ActionForm;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.struts.action.ActionForward;
import org.apache.struts.actions.DispatchAction;
import org.apache.struts.action.ActionErrors;
import org.apache.struts.action.ActionError;
public class GenericAction
extends DispatchAction {
/*
public ActionForward execute(ActionMapping actionMapping,
ActionForm actionForm,
HttpServletRequest servletRequest,
HttpServletResponse servletResponse) {
throw new https://www.doczj.com/doc/1413459109.html,ng.UnsupportedOperationException(
"Method $execute() not yet implemented.");
}
*/
public void saveGlobalErrors(HttpServletRequest httpServletRequest, String errorKey) {
ActionErrors errors = new ActionErrors();
errors.add(ActionErrors.GLOBAL_ERROR, new ActionError(errorKey));
if (errors != null) {
saveErrors(httpServletRequest, errors);
}
}
public ActionForward getIndexForward(ActionMapping actionMapping) { return actionMapping.findForward("index");
}
public ActionForward getBrowserForward(ActionMapping actionMapping) { return actionMapping.findForward("browser");
}
public ActionForward showDeleteForward(ActionMapping actionMapping) { return actionMapping.findForward("showDelete");
}
public ActionForward getOperatorOkForward(ActionMapping actionMapping) { return actionMapping.findForward("operatorok");
}
public ActionForward getErrorForward(ActionMapping actionMapping) { return actionMapping.findForward("global_error");
}
public ActionForward getShowAddForward(ActionMapping actionMapping) { return actionMapping.findForward("showAddRecord");
}
public ActionForward getShowModifyForward(ActionMapping actionMapping) { return actionMapping.findForward("showModifyRecord");
}
public ActionForward getShowDeleteForward(ActionMapping actionMapping) { return actionMapping.findForward("showDeleteRecord");
}
public ActionForward getShowFindForward(ActionMapping actionMapping) { return actionMapping.findForward("showFindRecord");
}
}
/*OperatorAction.java*/
package com.bookshop.action;
import org.apache.struts.action.ActionMapping;
import org.apache.struts.action.ActionForm;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.struts.action.ActionForward;
import com.bookshop.form.OperatorForm;
import org.apache.struts.action.Action;
import java.util.List;
import org.apache.struts.Globals;
import com.bookshop.util.DBUtil;
import com.bookshop.util.ApplicationUtil;
import com.bookshop.model.Operator;
import java.util.ArrayList;
import com.bookshop.util.PageInfo;
import org.apache.struts.actions.DispatchAction;
import java.util.Map;
import java.util.HashMap;
import com.bookshop.form.BookForm;
import java.util.Locale;
import org.apache.struts.action.ActionErrors;
import org.apache.struts.action.ActionError;
import com.bookshop.util.BookBean;
public class OperatorAction
extends GenericAction {
/*
public ActionForward execute(ActionMapping actionMapping,
ActionForm actionForm,
HttpServletRequest servletRequest,
HttpServletResponse servletResponse) {
throw new https://www.doczj.com/doc/1413459109.html,ng.UnsupportedOperationException(
"Method $execute() not yet implemented.");
}
*/
//转换为中文页面
public ActionForward ChangeCH(ActionMapping actionMapping,
ActionForm actionForm,
HttpServletRequest servletRequest,
HttpServletResponse servletResponse) {
servletRequest.getSession().setAttribute(Globals.LOCALE_KEY, Locale.CHINA); return this.getIndexForward(actionMapping);
}
//转换为英文页面
public ActionForward ChangeEN(ActionMapping actionMapping,
ActionForm actionForm,
HttpServletRequest servletRequest,
HttpServletResponse servletResponse) {
servletRequest.getSession().setAttribute(Globals.LOCALE_KEY, Locale.ENGLISH); return this.getIndexForward(actionMapping);
}
//链接到首页记录
public ActionForward showFirstPage(ActionMapping actionMapping,
ActionForm actionForm,
HttpServletRequest httpServletRequest,
HttpServletResponse httpServletResponse) {
List list = new ArrayList();
list = Operator.getRecords(0);
httpServletRequest.getSession().setAttribute("books", list); httpServletRequest.getSession().setAttribute("pageinfo",
new PageInfo(Operator.
getRecordsNumber(), 1));
return this.getBrowserForward(actionMapping);
}
//链接到上一页记录
public ActionForward showPreviousPage(ActionMapping actionMapping, ActionForm actionForm,
HttpServletRequest httpServletRequest,
HttpServletResponse httpServletResponse) {
List list = new ArrayList();
PageInfo pageInfo = (PageInfo) httpServletRequest.getSession().getAttribute( "pageinfo");
list = Operator.getRecords( (pageInfo.getPreviousPageNumber() - 1) * ApplicationUtil.recordPerPage);
httpServletRequest.getSession().setAttribute("books", list); httpServletRequest.getSession().setAttribute("pageinfo",
new PageInfo(Operator.
getRecordsNumber(), pageInfo.getPreviousPageNumber()));
return this.getBrowserForward(actionMapping);
}
//链接到下一页记录
public ActionForward showNextPage(ActionMapping actionMapping,
ActionForm actionForm,
HttpServletRequest httpServletRequest,
HttpServletResponse httpServletResponse) {
List list = new ArrayList();
PageInfo pageInfo = (PageInfo) httpServletRequest.getSession().getAttribute( "pageinfo");
list = Operator.getRecords(pageInfo.getCurrentlyPage() *
ApplicationUtil.recordPerPage);
httpServletRequest.getSession().setAttribute("books", list); httpServletRequest.getSession().setAttribute("pageinfo",
new PageInfo(Operator.
getRecordsNumber(), pageInfo.getNextPageNumber()));
return this.getBrowserForward(actionMapping);
}
//链接到末页记录
public ActionForward showLastPage(ActionMapping actionMapping,
ActionForm actionForm,
HttpServletRequest httpServletRequest,
HttpServletResponse httpServletResponse) {
List list = new ArrayList();
PageInfo pageInfo = (PageInfo) httpServletRequest.getSession().getAttribute( "pageinfo");
list = Operator.getRecords( (pageInfo.getPageCountNumber() - 1) * ApplicationUtil.recordPerPage);
httpServletRequest.getSession().setAttribute("books", list); httpServletRequest.getSession().setAttribute("pageinfo",
new PageInfo(Operator.
getRecordsNumber(), pageInfo.getLastPageNumber()));
return this.getBrowserForward(actionMapping);
}
//取消操作的转向
public ActionForward cancel(ActionMapping actionMapping,
ActionForm actionForm,
HttpServletRequest httpServletRequest,
HttpServletResponse httpServletResponse) {
if (isCancelled(httpServletRequest)) {
return this.getOperatorOkForward(actionMapping);
}
return null;
}
//查看所有记录
public ActionForward browser(ActionMapping actionMapping,
ActionForm actionForm,
HttpServletRequest httpServletRequest,
HttpServletResponse httpServletResponse) {
return this.showFirstPage(actionMapping, actionForm, httpServletRequest, httpServletResponse);
}
//执行添加记录
public ActionForward addRecord(ActionMapping actionMapping,
ActionForm actionForm,
HttpServletRequest httpServletRequest,
HttpServletResponse httpServletResponse) {
BookForm bookForm = (BookForm) actionForm;
if (Operator.addRecord(bookForm.loadBook()) >= 1) {
return this.getOperatorOkForward(actionMapping);
}
else {
this.saveGlobalErrors(httpServletRequest, "editrecord.jsp.adderror");
return this.getErrorForward(actionMapping);
}
}
//提交更新操作
public ActionForward SubmitRecord(ActionMapping actionMapping,
ActionForm actionForm,
HttpServletRequest httpServletRequest,
HttpServletResponse httpServletResponse) {
String str = (String) httpServletRequest.getSession().getAttribute("method"); if (str.equals("addRecord")) {
return addRecord(actionMapping, actionForm, httpServletRequest, httpServletResponse);
}
if (str.equals("modifyRecord")) {
return modifyRecord(actionMapping, actionForm, httpServletRequest, httpServletResponse);
}
else {
this.saveGlobalErrors(httpServletRequest, "edit.body.error");
return this.getErrorForward(actionMapping);
}
}
//执行修改操作
public ActionForward modifyRecord(ActionMapping actionMapping, ActionForm actionForm,
HttpServletRequest httpServletRequest,
HttpServletResponse httpServletResponse) {
BookForm bookForm = (BookForm) actionForm;
if (Operator.modifyRecord(bookForm.loadBook()) != -1) {
return this.getOperatorOkForward(actionMapping);
}
else {
this.saveGlobalErrors(httpServletRequest, "editrecord.jsp.modifyerror"); return this.getErrorForward(actionMapping);
}
}
//跳转到添加记录编辑页面
public ActionForward showAdd(ActionMapping actionMapping,
ActionForm actionForm,
HttpServletRequest httpServletRequest,
HttpServletResponse httpServletResponse) {
httpServletRequest.getSession().setAttribute("bookBean", new BookForm()); httpServletRequest.getSession().setAttribute("method",
new String("addRecord"));
return this.getShowAddForward(actionMapping);
}
//跳转到修改记录编辑页面
public ActionForward showModify(ActionMapping actionMapping,
ActionForm actionForm,
HttpServletRequest httpServletRequest,
HttpServletResponse httpServletResponse) {
BookBean book = new BookBean();
String str = httpServletRequest.getParameter("bookid").toString();
book = Operator.getRecord(str);
httpServletRequest.getSession().setAttribute("bookBean",
new BookForm(book.getBookId(),
book.getBookName(), book.getAuthor(), book.getPublish(), book.getPrice())); httpServletRequest.getSession().setAttribute("method",
new String("modifyRecord"));
return this.getShowModifyForward(actionMapping);
}
//删除记录
public ActionForward showDelete(ActionMapping actionMapping,
ActionForm actionForm,
HttpServletRequest httpServletRequest,
HttpServletResponse httpServletResponse) {
String str = httpServletRequest.getParameter("bookid").toString();
if (Operator.deleteRecord(str) != -1) {
return this.getOperatorOkForward(actionMapping);
}
else {
this.saveGlobalErrors(httpServletRequest, "edit.body.error");
return this.getErrorForward(actionMapping);
}
}
public ActionForward showFind(ActionMapping actionMapping,
ActionForm actionForm,
HttpServletRequest httpServletRequest,
HttpServletResponse httpServletResponse) {
//传递参数
httpServletRequest.getSession().setAttribute("bookBean", new BookForm()); httpServletRequest.getSession().setAttribute("method",
new String("findRecord"));
return this.getShowFindForward(actionMapping);
}
}
以下是三个ActionForm文件：
package com.bookshop.form;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionErrors;
import org.apache.struts.action.ActionError;
import org.apache.struts.action.ActionMapping;
import javax.servlet.http.HttpServletRequest;
import java.util.Map;
import java.util.HashMap;
public class BookForm
extends ActionForm {
private String author;
private String bookId;
private String bookName;
private String price;
private String publish;
private String beanId;
public BookForm() {
this.bookId = "";
this.bookName = "";
this.author = "";
this.publish = "";
this.price = "";
this.beanId = "";
}
public BookForm(String id, String name, String author, String publish, String price) {
this.bookId = id;
this.bookName = name;
this.author = author;
this.publish = publish;
this.price = price;
this.beanId = id;
}
public String getAuthor() {
return author;
}
public void setAuthor(String author) { this.author = author;
}
public void setPublish(String publish) { this.publish = publish;
}
public void setPrice(String price) {
this.price = price;
}
public void setBookName(String bookName) { this.bookName = bookName;
}
public void setBookId(String bookId) { this.bookId = bookId;
}
public String getBookId() {
return bookId;
}
public String getBookName() {
return bookName;
}
public String getPrice() {
return price;
}
public String getPublish() {
return publish;
}
public String getBeanId() {
return this.beanId;
}
public void setBeanId(String beanId) {
this.beanId = beanId;
}
public Map loadBook() {
Map record = new HashMap();
record.put("column1", this.getBookId().trim());
record.put("column2", this.getBookName().trim()); record.put("column3", this.getAuthor().trim());
record.put("column4", this.getPublish().trim());
record.put("column5", this.getPrice().trim());
return record;
}
public ActionErrors validate(ActionMapping actionMapping, HttpServletRequest httpServletRequest) {
ActionErrors errors = new ActionErrors();
if (this.bookId == null || this.bookId.equals("") ||
this.bookId.length() < 1) {
errors.add(ActionErrors.GLOBAL_ERROR, new ActionError("book.bookid.error")); }
if (this.bookName == null || this.bookName.equals("") ||
this.bookName.length() < 1) {
errors.add(ActionErrors.GLOBAL_ERROR,
new ActionError("book.bookname.error"));
}
if (this.author == null || this.author.equals("") ||
this.author.length() < 1) {
errors.add(ActionErrors.GLOBAL_ERROR, new ActionError("book.author.error")); }
if (this.publish == null || this.publish.equals("") ||
this.publish.length() < 1) {
errors.add(ActionErrors.GLOBAL_ERROR,
new ActionError("book.publish.error"));
}
// if ( (Float.isNaN(this.price)) && (this.price < 0)) {
if ( (Float.isNaN(Float.parseFloat(this.price))) &&
(Float.parseFloat(this.price) < 0)) {
errors.add(ActionErrors.GLOBAL_ERROR, new ActionError("book.price.error")); }
return errors;
}
}
/**/
package com.bookshop.form;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionErrors;
import org.apache.struts.action.ActionError;
import org.apache.struts.action.ActionMapping;
import javax.servlet.http.HttpServletRequest;
public class FindRecordForm
extends ActionForm {
private String findByKey;
private String findByValue;
public String getFindByKey() {
return findByKey;
}
public void setFindByKey(String findByKey) {
this.findByKey = findByKey;
}
public void setFindByValue(String findByValue) {
this.findByValue = findByValue;
}
public String getFindByValue() {
return findByValue;
}
public ActionErrors validate(ActionMapping actionMapping, HttpServletRequest httpServletRequest) {
/** @todo: finish this method, this is just the skeleton.*/ ActionErrors errors = null;
if (this.findByKey.equals("") || this.findByValue.equals("")) { errors = new ActionErrors();
errors.add(ActionErrors.GLOBAL_ERROR,
new ActionError("find.jsp.error"));
}
return errors;
}
public void reset(ActionMapping actionMapping, HttpServletRequest servletRequest) {
}
}
/**/
package com.bookshop.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.ActionError;
public class OperatorForm
extends ActionForm {
private String operator;
public String getOperator() {
return operator;
}
public void setOperator(String operator) {
this.operator = operator;
}
public ActionErrors validate(ActionMapping actionMapping, HttpServletRequest httpServletRequest) {
ActionErrors errors = new ActionErrors();
if (httpServletRequest.getParameter("operator") != null) { String lang = httpServletRequest.getParameter("operator"); /* if ( (lang.length() < 6) || (lang.length() > 6)) { errors.add(ActionErrors.GLOBAL_ERROR, new
ActionError("index.jsp.operator.error"));
}
*/
}
else {
errors.add(ActionErrors.GLOBAL_ERROR,
new ActionError("index.jsp.operator.null"));
}
return errors;
}
public void reset(ActionMapping actionMapping, HttpServletRequest servletRequest) {