struts1改struts2

Question

AdminBaseAction.java如下
package cn.sign_up.web.struts.actions;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;public abstract class AdminBaseAction extends Action {
@Override
public ActionForward execute(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response)
throws Exception {
// TODO Auto-generated method stub
return doExecute(mapping, form, request, response);
}

public abstract ActionForward doExecute(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response)
throws Exception ;
}
AjaxDeptDataAction如下
package cn.sign_up.web.struts.actions;import java.io.PrintWriter;
import java.util.Iterator;
import java.util.Set;import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;import cn.sign_up.domain.Academy;
import cn.sign_up.domain.Department;
import cn.sign_up.web.daoimpl.AdminDaoImpl;public class AjaxDeptDataAction extends AdminBaseAction{
public ActionForward doExecute(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response)
throws Exception {
AdminDaoImpl dao = AdminDaoImpl.getInstance();
String ano = request.getParameter("ano");
Academy academy = dao.findAcademyById(ano);
Set<Department> set = academy.getDepts();
String content = ""; for( Iterator<Department> iterator = set.iterator(); iterator.hasNext();) {
Department dept = iterator.next();
content += dept.getDno();
content += "$";
content += dept.getName();
content += "$"; }
response.setCharacterEncoding("GBK");
PrintWriter out = response.getWriter();
out.println(content);
return null;
}
}
请问如何把这个struts1写的改成struts2 给思路就行  具体我自己写  struts2中没有action类可继承  最好能给出doExecute（）跟Execute（）两个方法的参数

Answer 1

继承ActionSupport，定义成员变量content，ano，AdminDaoImpl ，页面使用struts标签，改改配置文件，其余的和struts1差不多了

Answer 2

 AdminDaoImpl.getInstance();这里的getInstance（）方法用什么替换

Answer 3

是的。ActionSupport，你没有务业层吗？就直接到Dao了呀。

Answer 4

package com.sign_up.action;import java.io.PrintWriter;
import java.util.Iterator;
import java.util.Set;import com.sign_up.bean.Academy;
import com.sign_up.bean.Department;
import com.sign_up.service.AcademyService;  public class AjaxDepartmentDataAction{
private AcademyService academyservice;
private Academy academy;
private static final long serialVersionUID = 1L; public AcademyService getAcademyservice() {
return academyservice;
}
public void setAcademyservice(AcademyService academyservice) {
this.academyservice = academyservice;
}
public Academy getAcademy() {
return academy;
}
public void setAcademy(Academy academy) {
this.academy = academy;
}
public String execute(){
academy = academyservice.findById(academy.getAcaId());
Set<Department> departments = academy.getDepartments();
String content = ""; for( Iterator<Department> iterator = departments.iterator(); iterator.hasNext();) {
Department department = iterator.next();
content += department.getDepId();
content += "$";
content += department.getDepName();
content += "$";
}

response.setCharacterEncoding("GBK");
PrintWriter out = response.getWriter();
out.println(content);
return null;
}
}
我改成了这样    但是response下面有红线提示，请问怎么处理   还有就是这是个2级下拉框的联动处理，struts配置是不是不要配置result只要写action就可以？execute()方法的返回类型是不是写string

Answer 5

execute()方法的返回类型是string,和result中的name对应；
struts2中response=ServletActionContext.getResponse();

Answer 6

Map response = (Map) ActionContext.getContext().get("response");
这个response类型写什么好    PrintWriter out = response.getWriter();
getWriter（）下面老有红线说类型不对

Answer 7

LZ，Struts2不只是改下action吧。最重要的struts配置文件呢？Struts2已经脱离Web容器了，没有了httprequest和rsp了。

Answer 8

struts2不用拿response，直接定义成员变量，加上get(),set()方法，jsp就能拿到对应的值了

Answer 9

谢楼上两位    不过我还是没实现二级下拉框级联 贴两段代码
public String execute() throws Exception {
//id = academy.getAcaId();
//System.out.println("id=" + id);

academy = academyservice.findById(academy.getAcaId());
departments = academy.getDepartments();
String content = ""; for (Iterator<Department> iterator = departments.iterator(); iterator
.hasNext();) {
Department department = iterator.next();
content += department.getDepId();
content += "$";
content += department.getDepName();
content += "$";
}
//HttpServletResponse response = (HttpServletResponse) ActionContext
//.getContext().get("response");

//response.setCharacterEncoding("GBK");
//PrintWriter out = response.getWriter();
//out.println(content);
return null; }
struts.xml配置 <action name="getDepartmentData" class="ajaxDepartmentDataAction"></action>
下面是add_world.jsp
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%@ taglib prefix="s" uri="/struts-tags"%>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%><%
String path = request.getContextPath();
String basePath = request.getScheme() + "://"
+ request.getServerName() + ":" + request.getServerPort()
+ path + "/";
%><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<script type="text/javascript">
var xmlrequest;
function createXMLHttpRequest() {
if (window.XMLHttpRequest) {
xmlrequest = new XMLHttpRequest();
} else if (window.ActiveXObject) {
try {
xmlrequest = new ActiveXObject("Msxml2.XMLHTTP");
} catch (e) {
try {
xmlrequest = new ActiveXObject("Microsoft.XMLHTTP");
} catch (e) {
}
}
}
}
function change(id) {
createXMLHttpRequest();

var uri = "getDepartmentData.action?acaId="+id;

xmlrequest.open("POST", uri, true);
xmlrequest.setRequestHeader("Content-Type",
"application/x-www-form-urlencoded");
xmlrequest.onreadystatechange = processResponse;
xmlrequest.send(null);
}
function processResponse() {
if (xmlrequest.readyState == 4) {
if (xmlrequest.status == 200) {

var departments = xmlrequest.responseText.split("$")
var displaySelect = document.getElementById("department");
displaySelect.innerHTML = null;
for ( var i = 0; i < departments.length - 2;) {
var op = document.createElement("option");
op.value = departments[i];
op.innerHTML = departments[i + 1];
displaySelect.appendChild(op);
i += 2;
}
} 
else {
window.alert("您所请求的页面有异常:"+ xmlrequest.status);
}
}
}function trim(s) {
return s.replace(/^\s*/, "").replace(/\s*$/, "");
}
function check() {
var errStr = "";
if(trim(document.getElementById("name").value) == null || trim(document.getElementById("name").value) == ""){
errStr += "\n年级名称不能为空";
}

if(errStr == "") {
return true;
}

alert(errStr);
return false;
}
</script>
<base href="<%=basePath%>"> <title>增加年级</title> </head> <body>
<br>
<br>
<br>
<center>
<h1>
增加年级
</h1>
</center>
<center>
<form action="saveWorld" method="post" onsubmit="return check();">
<table>
<tr>
<td>
所在学院：
</td>
<td> <select name="world.department.academy.acaId"
onchange="change(this.value);">
<c:forEach items="${academy}" var="academy">
<option value="${academy.acaId }">
${academy.acaName}
</option>
</c:forEach>
</select> </td>
</tr>
<tr>
<td>
所在专业：
</td>
<td>
<select name="world.department.depId" id="department">
<c:forEach items="${departments}" var="department">
<option value="${department.depId }">
${department.depName}
</option>
</c:forEach>
</select>
</td>
</tr>
<tr>
<td>
年级名称：
</td>
<td>
<input type="text" id="name" name="world.worName" />
</td>
</tr>
<tr>
<td colspan="2" align="center">
<input type="submit" value="提交">
<input type="reset" value="重置">
</td>
</tr>
</table>
</form>
</center>
</body>
</html>
自己先慢慢弄，也请高手指教

Answer 10

选择学院后弹出“您所请求的页面有异常 500” 500是status

Answer 11

这个错误时window.alert（）弹出来的~~！

Answer 12

我觉得主要问题就是<SCRIPT>怎么去接收action传回来的Set<Department>类型的department，不过我不会弄 呵呵

Answer 13

看看struts2教程把。这个比较简单的。

Answer 14

var uri = "getDepartmentData.action?acaId="+id;有没什么办法查看id是否传进去了 我在action中设置一个打印输出没有反应

Answer 15

getDepartmentData.action  老感觉这个action没执行  没一点反应   晕的死

Answer 16

应该确实没有执行，struts.xml配置应该<action name="getDepartmentData" class="cn.sign_up.web.struts.actions.ajaxDepartmentDataAction"></action>

Answer 17

action 是return null 不进行页面跳转  所以这么写了 大侠们救救我   

Answer 18

要么大家给我个struts2  ajax做的二级下拉框联动的例子   万分感激

Answer 19

public class AjaxDepartmentDataAction implements ServletResponseAware{
......
private HttpServletResponse response;
......
public void setServletResponse(HttpServletResponse reresponse) {
this.response = reresponse;
}
......
public String execute(){
response.setCharacterEncoding("GBK");
PrintWriter out = response.getWriter();
out.println("你要输出的内容");
return null;
}}

Answer 20

我要struts2 ajax做的二级下拉框联动的例子

Answer 21

改前台struts + ajax的工作量还是有点大啊，标签要改，配置文件也要改，搞不好ajax对象名称，方法也要改。

Answer 22

继承了baseActionSurport
httpRequest  rs=ServletActionContext.getRequest();
response同上

Answer 23

这是我现在改好的  现在别的地方都没问题了  就是返回第二个下拉框的值这里还没写好，现在action返回一个content    他的内容是"4$数学$1$计算机科学与技术$"这个形式  再研究下怎么接收就ok了，先发一下action怎么写的  到时弄完整了再把整个struts2跟ajax结合的二级联动下拉框发给大家
package com.sign_up.action;import java.util.Iterator;
import java.util.Set;import com.sign_up.bean.Academy;
import com.sign_up.bean.Department;
import com.sign_up.service.AcademyService;public class AjaxDepartmentDataAction {
private Academy academy;
private Integer acaId;
private AcademyService academyservice;
private Set<Department> departments;
private String content; public Academy getAcademy() {
return academy;
} public void setAcademy(Academy academy) {
this.academy = academy;
} public AcademyService getAcademyservice() {
return academyservice;
} public void setAcademyservice(AcademyService academyservice) {
this.academyservice = academyservice;
} public String execute() throws Exception { // academy = academyservice.findById(academy.getAcaId());
academy = academyservice.findById(this.getAcaId());
departments = academy.getDepartments();
content = "";
for (Iterator<Department> iterator = departments.iterator(); iterator
.hasNext();) {
Department department = iterator.next();
content += department.getDepId();
content += "$";
content += department.getDepName();
content += "$"; }
System.out.println(content); return null;
} public Integer getAcaId() {
return acaId;
} public void setAcaId(Integer acaId) {
this.acaId = acaId;
} public Set<Department> getDepartments() {
return departments;
} public void setDepartments(Set<Department> departments) {
this.departments = departments;
} public String getContent() {
return content;
} public void setContent(String content) {
this.content = content;
}}

Answer 24

script该如何接收形如“4$数学$1$计算机科学与技术$”的content，我用下面的代码接收不到，var departments = xmlrequest.responseText.split("$")，该怎么写 高手指教

Answer 25

各位牛人好像都忽略了一个问题，struts1改为struts2除了配置文件（struts.xml,web.xml），action当中的变量，方法等，它们的jar包可不一样，这都不换，改了你也启动不了啊

Answer 26

现在成功了，把代码都贴一下 ，方便大家学习。package com.sign_up.action;import java.util.Iterator;
import java.util.Set;import javax.servlet.http.HttpServletResponse;import org.apache.struts2.ServletActionContext;import com.opensymphony.xwork2.ActionSupport;
import com.sign_up.bean.Academy;
import com.sign_up.bean.Department;
import com.sign_up.service.AcademyService;public class AjaxDepartmentDataAction extends ActionSupport{
private Academy academy;
private Integer acaId;
private AcademyService academyservice;
private Set<Department> departments;
private String content;
private HttpServletResponse response;  public Academy getAcademy() {
return academy;
} public void setAcademy(Academy academy) {
this.academy = academy;
} public AcademyService getAcademyservice() {
return academyservice;
} public void setAcademyservice(AcademyService academyservice) {
this.academyservice = academyservice;
} public String execute() throws Exception {
academy = academyservice.findById(this.getAcaId());
departments = academy.getDepartments();
content = "";
for (Iterator<Department> iterator = departments.iterator(); iterator
.hasNext();) {
Department department = iterator.next();
content += department.getDepId();
content += "$";
content += department.getDepName();
content += "$"; }
System.out.println(content);
response = ServletActionContext.getResponse(); 
response.setContentType("application/xml;charset=UTF-8"); 
response.getWriter().write(content);  return null;
} public Integer getAcaId() {
return acaId;
} public void setAcaId(Integer acaId) {
this.acaId = acaId;
} public Set<Department> getDepartments() {
return departments;
} public void setDepartments(Set<Department> departments) {
this.departments = departments;
} public String getContent() {
return content;
} public void setContent(String content) {
this.content = content;
} public HttpServletResponse getResponse() {
return response;
} public void setResponse(HttpServletResponse response) {
this.response = response;
}}
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%@ taglib prefix="s" uri="/struts-tags"%>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%><%
String path = request.getContextPath();
String basePath = request.getScheme() + "://"
+ request.getServerName() + ":" + request.getServerPort()
+ path + "/";
%><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<script type="text/javascript">
var xmlrequest;
function createXMLHttpRequest() {
if (window.XMLHttpRequest) {
xmlrequest = new XMLHttpRequest();
} else if (window.ActiveXObject) {
try {
xmlrequest = new ActiveXObject("Msxml2.XMLHTTP");
} catch (e) {
try {
xmlrequest = new ActiveXObject("Microsoft.XMLHTTP");
} catch (e) {
}
}
}
}
function change(id) {
createXMLHttpRequest();

var uri = "ajaxDepartmentData.action?acaId="+id;
     //  document.write(id);
       
xmlrequest.open("POST", uri, true);
xmlrequest.setRequestHeader("Content-Type",
"application/x-www-form-urlencoded");
xmlrequest.onreadystatechange = processResponse;
xmlrequest.send(null);
}
function processResponse() {
if (xmlrequest.readyState == 4) {
if (xmlrequest.status == 200) {
  //  document.write("ok");
var departments = xmlrequest.responseText.split("$")

var displaySelect = document.getElementById("department");

displaySelect.innerHTML = null;

for ( var i = 0; i < departments.length - 2;) {
var op = document.createElement("option");
op.value = departments[i];
op.innerHTML = departments[i + 1];
displaySelect.appendChild(op);
i += 2;
}
} 
else {
window.alert("您所请求的页面有异常:"+ xmlrequest.status);
}
}
}function trim(s) {
return s.replace(/^\s*/, "").replace(/\s*$/, "");
}
function check() {
var errStr = "";
if(trim(document.getElementById("name").value) == null || trim(document.getElementById("name").value) == ""){
errStr += "\n年级名称不能为空";
}

if(errStr == "") {
return true;
}

alert(errStr);
return false;
}
</script>
<base href="<%=basePath%>"> <title>增加年级</title> </head> <body>
<br>
<br>
<br>
<center>
<h1>
增加年级
</h1>
</center>
<center>
<form action="saveWorld" method="post" onsubmit="return check();">
<table>
<tr>
<td>
所在学院：
</td>
<td> <select name="world.department.academy.acaId"
onchange="change(this.value);">
<c:forEach items="${academy}" var="academy">
<option value="${academy.acaId }">
${academy.acaName}
</option>
</c:forEach>
</select> </td>
</tr>
<tr>
<td>
所在专业：
</td>
<td>
<select name="world.department.depId" id="department">
<c:forEach items="${departments}" var="department">
<option value="${department.depId }">
${department.depName}
</option>
</c:forEach>
</select>
</td>
</tr>
<tr>
<td>
年级名称：
</td>
<td>
<input type="text" id="name" name="world.worName" />
</td>
</tr>
<tr>
<td colspan="2" align="center">
<input type="submit" value="提交">
<input type="reset" value="重置">
</td>
</tr>
</table>
</form>
</center>
</body>
</html>

Answer 27

academy = academyservice.findAll();// academy
departments = academy.get(0).getDepartments();// departments for (Iterator<Department> iterator = departments.iterator(); iterator
.hasNext();) {
Department department = iterator.next();
//System.out.println("depsize" + departments.size());

worlds = department.get(0).getWorlds(); // worlds
//System.out.println("worsize" + worlds.size());
}请问怎么 department转换成一个list  我现在这么做worlds这个list有时候有值有时候没有值private List<Academy> academy;
private List<Department> department;
private AcademyService academyservice;
private Set<Department> departments;
private Set<World> worlds;
private String content;