EXT读取后台json数据的问题

kehuo

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EXT json JSP JavaScript HTML

刚开始接触EXT，可以搞了2天了，一个小小的测试都没有搞出来
大侠们帮忙看看吧 ~~~ 后台能取到数据，可前台怎么都取不到json，页面上能显示出grid框和列但是没有数据；大家看我的代码可能会发现我的列都是中文的，这是由于我们的项目的原因，我查过资料EXT对中文取值是支持的

我的jsp也是UTF-8的

json的后台打印：{"pageInfo":1,"data":[{"签发人":"","归档":"","登记号":"001","保管期限":"10年","文件标题":"关于什么的测试情况","原文路径":"","份数":"","主题词":"啊","备注":"","正文":"","归档份数":"","处理单":"","密级":"机密","责任者":"啊","拟稿人":"","办结提示":"","分类号":"020","成文日期":"20081009","页数":"1","全宗号":"","缓急程度":"","签发时间":"","拟稿部门":"","主办部门":"","文号":"综[2008]1号","附件":"","登记日期":"20081009"}]}

java（action）的写法：

JSONArray ary = new JSONArray(recodList);
		JSONObject jo = new JSONObject();
		jo.put("data", ary);
		jo.put("pageInfo",recodList.size());
		String jstr=jo==null?"":jo.toString();
		boolean scriptTag = false;
		String cb = request.getParameter("callback");
		if (cb != null) {
		    scriptTag = true;
		    response.setContentType("text/html;charset=UTF-8");
		} else {//"text/html;charset=UTF-8"  "text/javascript;charset=UTF-8"  "application/x-json;charset=UTF-8"
		    response.setContentType("text/html;charset=UTF-8");
		}
		if (scriptTag) {
			jstr = cb + "("+jstr+")";
		}
		System.out.println(jstr);
		response.getWriter().print(jstr);

jsp(js代码)

<html>
<head>
<link rel="stylesheet" type="text/css" href="scripts/ext/resources/css/ext-all.css" />
<script type="text/javascript" src="scripts/ext/adapter/ext/ext-base.js"></script>
<script type="text/javascript" src="scripts/ext/ext-all.js"></script>
<script type="text/javascript" src="scripts/ext/ext-all-debug.js"></script>
<script type="text/javascript" src="scripts/ext/source/locale/ext-lang-zh_CN.js"></script>
<script type="text/javascript" >
  var APP_PATH='/esoaisapp';

Ext.onReady(function(){

function toggleDetails(btn, pressed){
        var view = grid.getView();
        view.showPreview = pressed;
        view.refresh();
    }
var ds= new Ext.data.Store({
	proxy: new Ext.data.HttpProxy({url: "listPreArchiveEdit.html?content.method=TestGtSearch&contentPath=/preArchive/1@2/1@299/29@332/4@346/3@456/@458"}),
	reader: new Ext.data.JsonReader({
	totalProperty:"pageInfo", 
	root:"data",
	fields:[
	              {name:"密级"},
	              {name:"办结提示"},
	              {name:"成文日期"}, 
	              {name:"附件"},       
	              {name:"责任者"},       
	              {name:"拟稿部门"},     
	              {name:"签发时间"},             
	              {name:"保管期限"},      
	              {name:"登记号"},       
	              {name:"全宗号"},        
	              {name:"登记日期"},              
	              {name:"分类号"},         
	              {name:"主题词"},         
	              {name:"主办部门"},       
	              {name:"份数"},         
	              {name:"归档"},           
	              {name:"拟稿人"},    
	              {name:"签发人"},      
	              {name:"页数"},              
	              {name:"文件标题"},	              
	              {name:"原文路径"},	              
	              {name:"文号"},	              
	              {name:"缓急程度"},	              
	              {name:"备注"},	              
	              {name:"归档份数"},
	              {name:"正文"},
	              {name:"处理单"}	              
	]
	})
});
var cbsm=new Ext.grid.CheckboxSelectionModel();
var cm=new Ext.grid.ColumnModel(
								[new Ext.grid.RowNumberer(),
								cbsm,
{header:"密级",dataIndex:"密级"},	                             
{header:"办结提示",dataIndex:"办结提示"},	                             
{header:"成文日期",dataIndex:"成文日期"},	                             
 {header:"附件",dataIndex:"附件"},	                             
{header:"责任者",dataIndex:"责任者"},	                             
{header:"拟稿部门",dataIndex:"拟稿部门"},	                             
{header:"签发时间",dataIndex:"签发时间"},	                             
{header:"保管期限",dataIndex:"保管期限"},	                             
{header:"登记号",dataIndex:"登记号"},	                             
{header:"全宗号",dataIndex:"全宗号"},	                             
{header:"登记日期",dataIndex:"登记日期"},                            
{header:"分类号",dataIndex:"分类号"},	                             
{header:"主题词",dataIndex:"主题词"},	                             
{header:"主办部门",dataIndex:"主办部门"},	                             
{header:"份数",dataIndex:"份数"},	                             
{header:"归档",dataIndex:"归档"},	                             
{header:"拟稿人",dataIndex:"拟稿人"},	                             
{header:"签发人",dataIndex:"签发人"},	                             
 {header:"页数",dataIndex:"页数"},	                             
{header:"文件标题",dataIndex:"文件标题"},	                             
 {header:"原文路径",dataIndex:"原文路径"},	                             
{header:"文号",dataIndex:"文号"},	                             
{header:"缓急程度",dataIndex:"缓急程度"},	                             
{header:"备注",dataIndex:"备注"},	                             
 {header:"归档份数",dataIndex:"归档份数"},	                             
{header:"正文",dataIndex:"正文"},	                             
{header:"处理单",dataIndex:"处理单"}
]
);
var grid=new Ext.grid.GridPanel({el:"grid",store:ds,cm:cm,sm:cbsm,
																		width:800,
																		height:500,
																		title:"grid",		
																		bbar: new Ext.PagingToolbar({
																				pageSize: 4,
																				store: ds,
																				displayInfo: true,
																				displayMsg: "Displaying topics {0} - {1} of {2}",
																				emptyMsg: "No topics to display"
																			})
												});
grid.render();
ds.load({params:{start:0,limited:10}});
});



</script>

</head>
<body style="padding:0px;margin:10px;">

<div id="grid" style="border:0px solid #cccccc;background-color:#f3f3f3;padding:5px;width:100%;" >
</div>

 </body>
</html>

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2008-10-30 21:24
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评论(5)
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分类:Web前端
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5 楼 jlzxjk 2008-11-12

我怎在做这个demo，借鉴你的，先看看

4 楼 jlzxjk 2008-11-12

不是吧，我也用siteMesh,但是返回的json格式的response没变啊

3 楼 kehuo 2008-10-31

原因找到了我们用了sitemath 来修饰页面它会修改response的内容将sitemath对此页面的修饰去掉就可以了
非常感谢

2 楼 elstage 2008-10-31

你在浏览器里面直接访问“listPreArchiveEdit.html?content.method=TestGtSearch&contentPath=/preArchive/1@2/1@299/29@332/4@346/3@456/@458”这个地址页面能出来json字符串么？

给你看看我的做法（我用的SpringMVC，其他的应该类似）：
JSONArray jsonArray = JSONArray.fromObject(list);
Map<String,Object> modle = new HashMap<String,Object>();
modle.put("size", size);
modle.put("grid", jsonArray);
mav.addObject("model", modle);
return mav;

然后action跳转到jsp：
<%@ taglib prefix="c" uri="http://java.sun.com/jstl/core_rt"%>
<%@ page pageEncoding="UTF-8" contentType="text/html;charset=UTF-8"%>
{"totalCount":"<c:out value="${model.size}" escapeXml='false'/>","topics":<c:out value="${model.grid}" escapeXml='false'/>}

1 楼 kehuo 2008-10-31

大侠们帮帮忙吧

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