想要实现的是获取action返回后跳转到另外的页面(struts.xml控制),并把数据用GridPane输出.也就是用gridpanel替换掉""标签的作用.
例如 getUser.jsp->submit->searchuser.action->(json string)userlist->userlist.jsp(gridpanel显示).
请问,ExtJs是AJAX 实现的话,[color=red]action是否一定是将数据返回到提交页面的?[/color]例如 getUser.jsp->searchuser.action->getUser.jsp.
如果是,那应该怎样将数据转移给我想要跳转的页面(userlist.jsp)?
下面是我做的一个例子,跳转到userlist.jsp后GridPanel[color=red]只看到Grid而没有数据[/color],初学ExtJs,请各位多多指教!!
getUser.jsp(action="searchuser")用于提交用户ID,略过.
struts.xml
[code="xml"]
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE struts PUBLIC
"-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"
"http://struts.apache.org/dtds/struts-2.0.dtd">
method="searchUser">
/userlist.jsp
[/code]
响应searchuser.action的class:userAction
[code="java"]
package com.prodinfo.action;
import java.util.Map;
import java.util.List;
import com.opensymphony.xwork2.ActionContext;
import com.opensymphony.xwork2.ActionSupport;
import java.util.Collection;
import com.prodinfo.biz.*;
import com.prodinfo.common.*;
import com.prodinfo.dao.*;
import com.prodinfo.pojo.Logger;
import com.prodinfo.pojo.SysUsr;
import net.sf.json.JSONArray;
import net.sf.json.JSONObject;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.struts2.ServletActionContext;
public class UserAction extends ActionSupport {
private String userid;
private String password;
private String username;
private String usrpwdques;
private String usrpwdans;
private String usremail;
private ILoggerDao loggerdao;
private IUserOperation uo;
private ComDate comdate;
private ComSession ssn;
private SysUsr sysusr;
public String userlist;
public UserAction() {
comdate = new ComDate();
ssn = new ComSession();
}
public String getUserid() {
return userid;
}
public void setUserid(String userid) {
this.userid = userid;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}
public String getUsrpwdques() {
return usrpwdques;
}
public void setUsrpwdques(String usrpwdques) {
this.usrpwdques = usrpwdques;
}
public String getUsrpwdans() {
return usrpwdans;
}
public void setUsrpwdans(String usrpwdans) {
this.usrpwdans = usrpwdans;
}
public String getUsremail() {
return usremail;
}
public void setUsremail(String usremail) {
this.usremail = usremail;
}
public void setLoggerdao(ILoggerDao loggerdao) {
this.loggerdao = loggerdao;
}
public void setUo(IUserOperation uo) {
this.uo = uo;
}
public String getUserlist() {
return userlist;
}
public void setUserlist(String userlist) {
this.userlist = userlist;
}
public String searchUser() {
try {
ComUserInfo comuserinfo = new ComUserInfo();
if (comuserinfo.getUserid() != "") {
List result = uo.searchUser(getUserid());
JsonUtil ju = new JsonUtil();
String jsresult = ju.collection2json(result);
this.userlist = ("{" + "\"userlist\": " + jsresult + " }");
System.out.println(userlist);
//response.getWriter().println(userlist);
return SUCCESS;
} else {
ssn.add("errmsg", "User not login yet!");
return ERROR;
}
} catch (Exception e) {
ssn.add("errmsg", e.getMessage());
return ERROR;
}
}
}
[/code]
userAction返回的"userlist"数据如下:
{
"userlist": [
{"usrCreateBy":"","usrCreateDate":"","usrDisableDate":"",
"usrEmail":"Frankie@together.com","usrId":"80319474","usrName":"Frankie",
"usrPwd":"1233","usrPwdAns":"1+1","usrPwdQues":"2",
"usrRemark":"","usrUpdateBy":"","usrUpdateDate":""},
{"usrCreateBy":"","usrCreateDate":"","usrDisableDate":"",
"usrEmail":"Justin@together.com","usrId":"80334272","usrName":"Justin",
"usrPwd":"1234","usrPwdAns":"2","usrPwdQues":"1+1",
"usrRemark":"nothing","usrUpdateBy":"","usrUpdateDate":""},
{"usrCreateBy":"","usrCreateDate":"","usrDisableDate":"",
"usrEmail":"Justin@together.com","usrId":"sa","usrName":"sysadmin",
"usrPwd":"a","usrPwdAns":"2","usrPwdQues":"1+1",
"usrRemark":"nothing","usrUpdateBy":"","usrUpdateDate":""}
]
}
输出页面的js:
userlist.js:
[code="java"]
/*
- Ext JS Library 3.0 RC2 Copyright(c) 2006-2009, Ext JS, LLC.
- licensing@extjs.com
- http://extjs.com/license */
Ext.onReady(function() {
Ext.QuickTips.init();
// turn on validation errors beside the field globally
// Ext.form.Field.prototype.msgTarget = 'side';
var cm = new Ext.grid.ColumnModel([{
header : '用户ID',
dataIndex : 'userId'
}, {
header : '用户昵称',
dataIndex : 'usrName'
}, {
header : '密码',
dataIndex : 'usrPwd'
}, {
header : '电子邮件地址',
dataIndex : 'usrEmail'
}, {
header : '密码提示问题',
dataIndex : 'usrPwdQues'
}, {
header : '密码提示问题答案',
dataIndex : 'usrPwdAns'
}]);
var reader = new Ext.data.Store({
root : 'userlist'
}, [{
name : 'usrId',
mapping : 'userId'
}, {
name : 'usrName',
mapping : 'usrName'
}, {
name : 'usrPwd',
mapping : 'usrPwd'
}, {
name : 'usrEmail',
mapping : 'usrEmail'
}, {
name : 'usrPwdQues',
mapping : 'usrPwdQues'
}, {
name : 'usrPwdAns',
mapping : 'usrPwdAns'
}]);
var pxy = new Ext.data.HttpProxy({
url : 'searchuser.action',
method : 'GET'
})
var ds = new Ext.data.JsonStore({
proxy : pxy,
reader : reader
});
var grid = new Ext.grid.GridPanel({
store : ds,
sm : sm,
cm : cm,
loadMask : {
msg : ' 数据加载中...'
},
autoHeight : true
});
var sm = new Ext.grid.CheckboxSelectionModel();
var vp = new Ext.Viewport({
layout : "border",
frame : true,
title : "注册",
autoHeight : true,
items : [{// Viewport
region : "north",
height : 100,
title : "顶部面板"
}, {
region : "south",
height : 50,
title : "底部面板"
}, {
region : "west",
width : "20%",
title : "左边面板"
}, {
region : "east",
width : "20%",
title : "右边面板"
}, {
region : "center",
title : "中央面板",
items : [frm = new Ext.FormPanel({
items : [grid]
} /* Eof formpanel */)
/* Eof border center */]
} /* Eof Viewport */]
});
grid.render();
ds.load();
vp.render(document.body);
});
[/code]
[b]问题补充：[/b]
感谢 yourgame (资深架构师) 的回答
你完全理解错误了..
如果用到了extjs 就不需要什么跳转了.你直接输出out.print(json);
您的意思是否我在问题里提到的"ExtJs是AJAX 实现的话,action是否一定是将数据返回到提交页面的?例如 getUser.jsp->searchuser.action->getUser.jsp."?
可是如果我想把数据放到其他页面的话,我应该怎么做才能把数据送过去呢.请不吝赐教.
[b]问题补充：[/b]
感谢两位的回答,我现在转换了思路,当用户提交了之后,先进行页面跳转到userlist.jsp,然后才在userlist,jsp里去请求action的返回数据,并放到GridPanel里,不知道这种思路是否可行.
即:
getUser.jsp->Submit->redirect->userlist.jsp->searchuser.action->userlist.jsp(Grid展现)
