Ext store没法得到后台传的数据

2012-09-29

Ext store无法得到后台传的数据Store里面没有数据，但是直接访问后台处理程序的话有数据的JScript codescr

Ext store无法得到后台传的数据
Store里面没有数据，但是直接访问后台处理程序的话有数据的

JScript code

<script type="text/javascript">    Ext.onReady(function(){    var cum = new Ext.grid.ColumnModel([    {header:'ID',dataIndex:'id'},    {header:'adValue',dataIndex:'adValue'},    {header:'adTime',dataIndex:'adTime'}    ]);    var store = new Ext.data.JsonStore({                                        proxy:new Ext.data.HttpProxy({url:'http://192.168.0.9/showAll.cgi'}),        reader:new Ext.data.JsonReader({totalProperty:'totalProperty',root:'root'},[{name:'id'},{name:'adValue'},{name:'adTime'}])    });    //store.load();    alert(store.getCount());//这个地方显示为0    var cumgrid = new Ext.grid.GridPanel({        renderTo:'cumGrid',        store:store,        viewConfig:{            forceFit:true        },        autoHeight:true,        autoWidth:true,        cm:cum,        bbar:new Ext.PagingToolbar({            pageSize:10,            autowidth:true,            store:store,            displayInfo:true,            emptyMsg:'no record'        })    });});</script>

C/C++ code

#include "sqlite3.h"#include <stdio.h>int  main(void){    printf("Content-Type:text/html;charset=gb2312\n\n");//    printf("<html>\n<body>\n");    sqlite3 *db;    char *zErrMsg = 0;    int rc;    char *sql = "select * from tempture limit 20;";    char result[1024]="{totalProperty:20,root:[";    char ** tableResult;    int nRow,nColumn;    int i,j,index;    rc = sqlite3_open("envDB",&db);//    printf("<table>\n<tr><td>ID</td><td>ADVALUE</td><td>ADTIME</td></tr>\n");//    printf("%d%d",rc,SQLITE_OK);    if(rc)    {        fprintf(stdout,"Can't opendb:%s\n ",sqlite3_errmsg(db));        sqlite3_close(db);        exit(1);        }    rc = sqlite3_get_table(db,sql,&tableResult,&nRow,&nColumn,&zErrMsg);    if(SQLITE_OK == rc)    {        index = nColumn;        for(i = 0;i < nRow;i++)        {//        printf("<tr>");/*            for(j =0;j < nColumn;j++)            {                printf("<td>%s</td>",tableResult[index]);                index++;                }*/        strcat(result,"{id:");        strcat(result,tableResult[index]);        strcat(result,",");        index++;        strcat(result,"adValue:");        strcat(result,tableResult[index]);        strcat(result,",");        index++;        strcat(result,"adTime:");        strcat(result,tableResult[index]);        if((i+1) == nRow){            strcat(result,"}");        }else{            strcat(result,"},");        }        index++;//        printf("</tr>\n");                }        strcat(result,"]}");    }    sqlite3_free_table(tableResult);    sqlite3_close(db);    printf("%s",result);//    printf("</table>\n");//    printf("</body>\n"); //    printf("</html>\n");     return 0;    }

直接访问http://192.168.0.9/showAll.cgi'得到的数据格式为{totalProperty:20,root:[{id:883,adValue:413 ,adTime:2012-07-08 21:20:01},{id:884,adValue:409 ,adTime:2012-07-08 21:20:01},{id:885,adValue:411 ,adTime:2012-07-08 21:20:02},{id:886,adValue:407 ,adTime:2012-07-08 21:20:02},{id:887,adValue:406 ,adTime:2012-07-08 21:20:03},{id:888,adValue:409 ,adTime:2012-07-08 21:20:03},{id:889,adValue:413 ,adTime:2012-07-08 21:20:04},{id:890,adValue:402 ,adTime:2012-07-08 21:20:04},{id:891,adValue:409 ,adTime:2012-07-08 21:20:05},{id:892,adValue:406 ,adTime:2012-07-08 21:20:05},{id:893,adValue:412 ,adTime:2012-07-08 21:20:06},{id:894,adValue:408 ,adTime:2012-07-08 21:20:06},{id:895,adValue:406 ,adTime:2012-07-08 21:20:07},{id:896,adValue:408 ,adTime:2012-07-08 21:20:07},{id:897,adValue:409 ,adTime:2012-07-08 21:20:08},{id:898,adValue:410 ,adTime:2012-07-08 21:20:08},{id:899,adValue:408 ,adTime:2012-07-08 21:20:09},{id:900,adValue:406 ,adTime:2012-07-08 21:20:09},{id:901,adValue:407 ,adTime:2012-07-08 21:20:10},{id:902,adValue:406 ,adTime:2012-07-08 21:20:10}]}

[解决办法]

JScript code

autoLoad: true store.load({ callback: function(records, options, sucess){    alert(records.length);}, scope: this });
[解决办法]
意思是说
要么设置store自动获取数据
要么你手动load请求获取数据
[解决办法]
查看json转换的格式

使用firefox firebug  查看

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Ext store没法得到后台传的数据