ext 中两个josn数据如何解析为一个store

Question

有下面的数据：
{
image:[
{"appeId":"1","name":"database","size":"3KB"},
{"appeId":"2","name":"host","size":"3KB"},
{"appeId":"3","name":"view","size":"3KB"},
{"appeId":"4","name":"computer","size":"3KB"},
{"appeId":"5","name":"greenview","size":"3KB"}
],
dir:[
{"appeId":"1","name":"database","size":"3KB"},
{"appeId":"2","name":"host","size":"3KB"},
{"appeId":"3","name":"view","size":"3KB"},
{"appeId":"4","name":"computer","size":"3KB"},
{"appeId":"5","name":"greenview","size":"3KB"}
]
}
请问如何解析成一个store

如果数据只有一条比如：
{
image:[
{"appeId":"1","name":"database","size":"3KB"},
{"appeId":"2","name":"host","size":"3KB"},
{"appeId":"3","name":"view","size":"3KB"},
{"appeId":"4","name":"computer","size":"3KB"},
{"appeId":"5","name":"greenview","size":"3KB"}
]
}
知道如何解析，有知道的兄弟吗，帮帮忙！
[b]问题补充：[/b]
数据是从后台加载的

Answer 1

var store =new Ext.data.Store({
proxy:new Ext.data.HttpProxy({
method:'GET',
url:'这里写请求的路径（AJAX请求）'
}),
reader:new Ext.data.JsonReader({
root:'这里写根节点名',
totalProperty: 'total',
fields:['columnName1','columnName2','columnName3','columnName4']
})
});