asp.net Web API - JayData with WebAPI 和 OData 不运行回调

Question

我正在使用最新版本的JayData与RC的Asp。Net WebAPI OData。当我运行JavaScript函数从服务器获取数据时，我可以看到带有JSON数据的请求和响应。然而，.then()函数永远不会触发，所以UI不知道数据从服务器返回。

这是我的JayData调用:

(function(root) {
    var context = new Default.Container({
        name: 'oData',
        oDataServiceHost: '../api/transactions'
    });
    $(function() {
        context.TransactionsByMonth.take(5).toArray().then(function(transactions) {
            transactions.forEach(function (transaction) {
                alert('Test');
            });
        });
    });
}(window));

以下是响应头:

响应标头cache - control no - cache内容长度1811application/json内容类型日期2012年12月21日星期五格林尼治时间08:32:58到期后1编译指示no - cachemicrosoft iis服务器/8.0X-AspNet-Version 4.0.30319X-Powered-By ASP。网X-SourceFiles = ? utf - 8 B ? YzpcdXNlcnNcanVzdGluXGRvY3VtZW50c1x2aXN1YWwgc3R1ZGlvIDIwMTJcUHJvamVjdHNcVHJlYXNTdXJlLldlYlxUcmVhc1N1cmUuV2ViXGFwaVx0cmFuc2FjdGlvbnNcVHJhbnNhY3Rpb25zQnlNb250aA = = ?＝请求头接受application/atomsvc+xml;q=0.8, application/json;odata=verbose;q=0.5， /;q=0.1接受编码gzip, deflate接收语言en - us, en; q = 0.5连接维生饼干glimpseState =零;glimpseLatestVersion = 0.87;glimpseOptions =零;glimpseClientName =零主机localhost: 42039MaxDataServiceVersion 2.0推荐人http://{localhost}/仪表板/测试用户代理Mozilla/5.0 (Windows NT 6.2;WOW64;rv:17.0) Gecko/20100101 Firefox/17.0

下面是响应:

[
  {
    "TransactionByMonthId": 1,
    "BeginningBalanceAmount": 5970.0,
    "FloatAmount": 8027.0,
    "InflowsAmount": 8607.0,
    "OutflowsAmount": -2057.0,
    "EndingBalanceAmount": 33345.0,
    "MonthOfYear": 12,
    "MonthOfYearName": "MonthOfYearName6136f9ba-95c3-4977-ab29-5ec2e2968c5f",
    "QuarterOfYear": 8,
    "YearNumber": 2012
  },
  {
    "TransactionByMonthId": 10,
    "BeginningBalanceAmount": 9201.0,
    "FloatAmount": 4723.0,
    "InflowsAmount": 4933.0,
    "OutflowsAmount": -2808.0,
    "EndingBalanceAmount": 9858.0,
    "MonthOfYear": 11,
    "MonthOfYearName": "MonthOfYearName7c407e0d-d730-43c3-aff6-d3e56313f992",
    "QuarterOfYear": 17,
    "YearNumber": 2012
  },
  {
    "TransactionByMonthId": 19,
    "BeginningBalanceAmount": 3151.0,
    "FloatAmount": 19.0,
    "InflowsAmount": 9340.0,
    "OutflowsAmount": -6118.0,
    "EndingBalanceAmount": 19958.0,
    "MonthOfYear": 10,
    "MonthOfYearName": "MonthOfYearName504ded96-a4e3-4492-ae22-98da7c9c2ba1",
    "QuarterOfYear": 26,
    "YearNumber": 2012
  },
  {
    "TransactionByMonthId": 28,
    "BeginningBalanceAmount": 3826.0,
    "FloatAmount": 7120.0,
    "InflowsAmount": 3341.0,
    "OutflowsAmount": -9360.0,
    "EndingBalanceAmount": 33617.0,
    "MonthOfYear": 9,
    "MonthOfYearName": "MonthOfYearName5fa907a3-b6a3-4a42-a53b-2229da6e1dc6",
    "QuarterOfYear": 35,
    "YearNumber": 2012
  },
  {
    "TransactionByMonthId": 37,
    "BeginningBalanceAmount": 6832.0,
    "FloatAmount": 4412.0,
    "InflowsAmount": 2462.0,
    "OutflowsAmount": -3726.0,
    "EndingBalanceAmount": 40857.0,
    "MonthOfYear": 8,
    "MonthOfYearName": "MonthOfYearNameb3f6a899-6201-418a-b020-31babb42123b",
    "QuarterOfYear": 44,
    "YearNumber": 2012
  }
]

Answer 1

有两件事需要检查:

jquery或q required

如果你想使用承诺接口(然后/fail)，那么你应该包括jquery或q.js作为承诺实现(JayData没有自己的承诺实现)。如果你使用q.js，你还必须包括jaydatammodules/qdeferred.js作为承诺适配器(这你不必与jquery做)。

给定的响应是WebAPI而不是OData

您复制的响应负载不是OData，它必须来自一个简单的WebAPI响应。因此，您需要来自JayData的WebAPI提供程序，而不是这种格式的OData提供程序。如果您正在使用ASP。. NET WebAPI OData包，那么有些东西没有正确地连接进来:这个包将WebAPI响应有效载荷格式更改为该OData的格式。

Answer 2

也请捕获并记录失败分支。那就是()fail(函数(原因){console.log(原因);})另外，如果有任何异常发生，你可以用chrome浏览器捕获，所以也请尝试。