ext grid不显示数据

[nature_he]

我用的是struts2和ext3.0
我在自己的action里调用
outJson(stuList);
这个方法是我从网上找的例子的工具类继承来的
工具类代码如下

package com.jju.psytest.action;

import java.io.IOException;
import java.io.PrintWriter;
import java.io.Serializable;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import net.sf.json.JSONArray;
import net.sf.json.JSONObject;

import org.apache.struts2.ServletActionContext;

import com.opensymphony.xwork2.ActionSupport;

/**
 * 
 * [e-mail]
 * @author linlin yu
 * @version 1.0
 */
public class BaseAction extends ActionSupport implements Serializable {	
	
	public HttpServletRequest getRequest() {
		return  ServletActionContext.getRequest();
	}

	public HttpServletResponse getResponse() {
		return ServletActionContext.getResponse();
	}

	public void outJsonString(String str) {
		getResponse().setContentType("text/javascript;charset=UTF-8");
                 
		System.out.println(str);//测试代码
		outString(str);
	}

	public void outJson(Object obj) {
		outJsonString(JSONObject.fromObject(obj).toString());
	}

	public void outJsonArray(Object array) {
		outJsonArray(JSONArray.fromObject(array).toString());
	}
         //最后输出的方法
	public void outString(String str) {
		try {
			
			PrintWriter out =getResponse().getWriter();
			out.write(str);
		} catch (IOException e) {
		}
	}

	public void outXMLString(String xmlStr) {
		getResponse().setContentType("application/xml;charset=UTF-8");
		outString(xmlStr);
	}

}

后台可以把json数据打印出来
{"list":[{"id":"1","name":"name1"},{"id":"2","name":"name2"},{"id":"3","name":"name3"},{"id":"4","name":"name4"}],"message":"","success":false,"totalSize":4}
可前台可以显示表格，但是表格内容为空
前台ext代码为

Ext.onReady(function(){

    var cm = new Ext.grid.ColumnModel([
    {
        header: '编号 ',
        dataIndex: 'id',
        width: 30
    }, 
    {
        header: '名字 ',
        dataIndex: 'name',
        width: 50
    }
    ]);
    cm.defaultSortable = true;
    

   
   
	var ds = new Ext.data.Store({
	proxy: new Ext.data.HttpProxy({
						url:'admin/student_list.action',
						method:'post'
						}),
    reader:  new Ext.data.JsonReader({
			
			totalProperty : 'totalSize',
			id : 'id',
			remoteSort: true,
			root:'list',
			fields:[
			{name:'id',type:'string'},
			{name:'name',type:'string'}
			]
	})
	});
 
    ds.load();
    
    var grid = new Ext.grid.GridPanel({
    	margins: '5 5 5 5 ',
        renderTo: 'grid',
        width: 600,
        height: 500,  
        store: ds,
        cm: cm,
        viewConfig: {
        	forceFit: true
        }
    });
   
	var viewport = new Ext.Viewport( {
			layout : 'border',
			items : [ grid ]
		});
});

[woshifou]

你调试下，看有没有post回数据。

[happy664618843]

单步调试最好解决方法

[nature_he]

哦，慢慢试吧