javascript - extjs ajax 调用存储未加载

Question

如果与其他帖子非常相似，我提前道歉，但我已经工作了一个多星期后无法让它工作。终于让 web 服务返回数据，我可以看到返回的数据，但商店不会加载它。除了一种情况:当我创建一个 ArrayStore 并将存储设置为 loadRawData 时，我看到网格中的整个响应错误地全部显示在一列下；但很高兴看到数据。有人可以看看这个，看看为什么我的商店没有加载数据和填充网格:

   Ext.define('User', {
    extend: 'Ext.data.Model',
    fields: [
         { name: 'connTime', type: 'string' },
         { name: 'userName', type: 'string' },
         { name: 'clientName', type: 'string' },
         { name: 'feedUrl', type: 'string' },
         { name: 'dconnTime', type: 'string' },
         { name: 'errMessage', type: 'string' },
         { name: 'ip', type: 'string' }
  ]
});

var myStore = Ext.create('Ext.data.Store', {
    model: 'User'
 });


 Ext.Ajax.request({
    url: 'http://dfsdfsfsfs/WCFService/WebService1.asmx/getValue',
    method: 'GET',
    success: function (response, options) {
        var s = response.responseText;
        Ext.MessageBox.alert(s, 'WOO WOO');
        myStore.loadData(s);
    },
    failure: function (response, options) {
        Ext.MessageBox.alert('FAILED MF', 'Unable to GET');
    }
});



  var grid = Ext.create('Ext.grid.Panel', {
    store: myStore,
    stateful: true,
    stateId: 'stateGrid',
    columns: [
        {
            text: 'Query',
            width: 25,
            sortable: false,
            dataIndex: 'userName'
        },
        {
            text: 'Count',
            width: 5,
            sortable: true,
            renderer: change,
            dataIndex: 'ip'
        },
        {
            text: 'Last Updated',
            width: 76,
            sortable: true,
            dataIndex: 'connTime'
        },
        {
            text: 'Disconnect Time',
            width: 10,
            sortable: true,
            renderer: change,
            dataIndex: 'dconnTime'
        },
        {
            text: 'Client',
            width: 10,
            sortable: true,
            renderer: change,
            dataIndex: 'clientName'
        }

    ],
    height: 350,
    width: 800,
    title: 'Active Queries',
    renderTo: 'grid-example',
    viewConfig: {
        stripeRows: true
    }
});

.....

我什至尝试了一种不同的方式来做到这一点，而使用这种方式我什至没有看到返回的 ajax 响应:

 var newStore = Ext.create('Ext.data.ArrayStore', {
    model: 'User',
    proxy: {
        type: 'ajax',
        url: 'http://dfsdfsfsfs/WCFService/WebService1.asmx/getValue',
        reader: {
            type: 'json',
            root: 'd',
            successProperty: 'success'
        },
        success: function (response, options) {
            var s = response.responseText;
            Ext.MessageBox.alert(s, 'LA LA LA');
            newStore.loadData(s);
        },
        failure: function (response, options) {
            Ext.MessageBox.alert('FAILED AGAIN', 'SUCKS');
        }
    }
});

编辑:

服务器响应:

{"d":{"connTime":null,"userName":"101591196589145","clientName":null,
   "feedUrl":null,"dconnTime":null,"errMessage":null,"ip":null}}

“d”root 是我手动添加的，原始 webresponse 中不存在。我捕获它并添加根:

{"connTime":null,"userName":"101591196589145","clientName":null,"feedUrl":null,
"dconnTime":null,"errMessage":null,"ip":null}}

编辑 2:

  Ext.define('User', {
    extend: 'Ext.data.Model',
    fields: [
         { name: 'value', type: 'string' },
         { name: 'tag', type: 'string' }
    ]
});


var newStore = new Ext.data.JsonStore({
    model: 'User',
    proxy: {
        type: 'ajax',
        url: 'http://localhost:52856/WCFService/WebService1.asmx/getRules',
        reader: {
            type: 'json',
            root: 'rules',
            idProperty: 'value'                
        },
        success: function (response, options) {
            var s = response.responseText;
            Ext.MessageBox.alert(s, 'LA LA LA');
            newStore.loadData(s);
        },
        failure: function (response, options) {
            Ext.MessageBox.alert('FAILED AGAIN', 'SUCKS');
        }
    }
 });

  var grid = Ext.create('Ext.grid.Panel', {
    store: newStore,
    stateful: true,
    columns: [

这是我正在尝试的新 json:

{"rules":[{"value":"101591196589145","tag":"16"},
 {"value":"102890809752267","tag":"16"},    
 {"value":"107821192690513","tag":"16"},    {"value":"111517428886211","tag":"16"},
{"value":"117389718398171","tag":"16"},{"value":"12099149051","tag":"16"},

好的，我发现了 ext.ajax.request 调用可能存在的问题。在发出请求时，商店甚至没有定义，因此数据没有加载。我怎样才能克服这个问题？

Answer 1

这里我给大家举个例子，和你的代码对比一下就可以了。

// defining a model
Ext.define('SampleModel', {
    extend: 'Ext.data.Model',
    fields: [
        {name: 'YOUR_ID', type: 'int'},
        {name: 'YOUR_NAME', type: 'string'}
    ]
});

// defining a store
var storeDefinition = new Ext.data.JsonStore({
    model: 'SampleModel',
    proxy: {
        type: 'ajax',
        url: '/your/url/path/data.php',
        reader: {
            // you MUST define root and idProperty
            type: 'json',
            root: 'rootList',
            idProperty: 'YOUR_ID'
        }
    }
});

这里重要的部分是root 和idProperty。正如您指定的那样，root 是 json 对象的根节点。 idProperty是json对象中的唯一id。

要捕获success 和failure 响应，您应该在json 对象中返回success 或failure 数据。不必在 reader 部分指定 success 属性。例如；

public function dnr_info()
{
    $dnr    = $this->input->get('dnr', TRUE);
    $subsys = $this->input->get('subsys', TRUE);
    $data['success'] = TRUE;
    $data['data'] = $this->dnr->get_dnr_info($dnr, $subsys);
    echo json_encode($data);
}

以上函数将返回 json 对象的 success 属性。

并且，这是从服务器返回的 json 对象。

{"success":true,"data":{"SUBSYS_ART_NR":"136451","ART_NR":"459993","ACTION_DESC":"BAKKAL AKT\u0130V\u0130TES\u0130 (176)","ACTIONS_NR":"130012676","START_DATE":"19.12.2013","STOP_DATE":"16.01.2014","DISCOUNT_TYPE":"SPECIAL PRICE","LEVEL_TYPE":"QUANTITY","LEVEL_IMPACT":"MULTIPLE","BASIS":"ARTICLE","LEVEL_1":"1 ADET","VALUE_1":"5,92","NWW_VK_PREIS":"6.69","KOLLI_VK_PREIS":"6.69"}}

// here is the another sample for root which is articleList, idProperty which is ARTICLE_ID 
{"articleList":[{"ARTICLE_ID":"193","ART_NR":"225","ART_DESC":"27*1\/5LT.M.NEK.TAMEK.","SORTEN_TEXT":"ELMA","VAR":"1","GEBI":"1","SUBSYS_ART_NR":"225","NWW_VK_PREIS":"14.49","KOLLI_VK_PREIS":"14.49","DNR_ID":null,"STATUS":"0"},