jquery ajax调用返回JSON解析错误
jquery ajax调用返回JSON解析错误
提问于 2012-05-05 05:16:01
我使用jquery调用一个ajax wcf方法，该方法以JSON字符串的形式返回一个对象列表。在fiddler2 (在TextView中)中检查JSON字符串时，它看起来如下所示：
{"d":"[{\"ID\":\"6b2b8c62-31ce-4df2-982b-054ff5f6be72\",\"Name\":\"Carol\",\"Surname\":\"IrishWife\"},{\"ID\":\"d254740a-0a0f-4a1e-9e4f-0812227dd5af\",\"Name\":\"Willie\",\"Surname\":\"Le Roux\"},{\"ID\":\"660bf0dd-436a-4588-a9c0-19fd6fdcee23\",\"Name\":\"Emmas\",\"Surname\":\"Mum\"},{\"ID\":\"6b9403c5-b728-4e96-bcb1-203e7472eec3\",\"Name\":\"Owen\",\"Surname\":\"Lima\"},{\"ID\":\"d52c08fb-4418-4600-960f-243ff4443ee6\",\"Name\":\"Tim\",\"Surname\":\"Lee\"},{\"ID\":\"e2aacf5b-8855-44ce-9338-3d39f8ab3349\",\"Name\":\"Marcello\",\"Surname\":\"MT\"},{\"ID\":\"578be087-8385-46d6-89de-3db31d352cbc\",\"Name\":\"Carlyn\",\"Surname\":\"Homegroup\"},{\"ID\":\"4c805825-2bee-447a-8b75-41ead17db33e\",\"Name\":\"George\",\"Surname\":\"Homegroup\"},{\"ID\":\"ae48804f-5e78-42c8-9ba0-4214c98a5a89\",\"Name\":\"Isla\",\"Surname\":\"Le Roux\"},{\"ID\":\"f8be2f4f-fedb-4863-8a84-44fddea84ea9\",\"Name\":\"Peter\",\"Surname\":\"Anderson\"},{\"ID\":\"15e7644d-ec43-44ff-a959-47e00112da6b\",\"Name\":\"Kitty\",\"Surname\":\"Corbett\"},{\"ID\":\"8fd7fccc-335c-4d5c-93b5-4b00f96a9950\",\"Name\":\"Natalie\",\"Surname\":\"Archibald\"},{\"ID\":\"09b5aad2-2cf1-488a-962b-4d692b05ddea\",\"Name\":\"Miku\",\"Surname\":\"Heally\"},{\"ID\":\"affa369e-5af3-4537-a0f4-71422956da41\",\"Name\":\"Steven\",\"Surname\":\"Corbett\"},{\"ID\":\"65f57da3-4f88-4798-9590-83b4ccecfc44\",\"Name\":\"Tim\",\"Surname\":\"Archibald\"},{\"ID\":\"53bfb451-f66f-4b6e-b430-8d13c95b30d8\",\"Name\":\"Philip\",\"Surname\":\"MT\"},{\"ID\":\"c7f22b9b-4030-4f82-9f75-bbb726cabb73\",\"Name\":\"Vincent\",\"Surname\":\"Van Der Walt\"},{\"ID\":\"232577be-3165-4316-a20d-c2f2a09c5382\",\"Name\":\"Scott\",\"Surname\":\"Lynn\"},{\"ID\":\"913508a1-5dca-4504-8caf-c8e3dc386fc0\",\"Name\":\"Dan\",\"Surname\":\"MT\"},{\"ID\":\"36054a07-b14d-4c1c-b35f-e00875dde7e5\",\"Name\":\"Sarah\",\"Surname\":\"MT\"},{\"ID\":\"f14e7d98-e040-4ba9-928f-f2ff48116b0b\",\"Name\":\"Josh\",\"Surname\":\"IrishDude\"}]"}当我在fiddler的JSON视图中检查结果时，它显示以下JSON：
d=[{"ID":"6b2b8c62-31ce-4df2-982b-054ff5f6be72","Name":"Carol","Surname":"IrishWife"},{"ID":"d254740a-0a0f-4a1e-9e4f-0812227dd5af","Name":"Willie","Surname":"Le Roux"},{"ID":"660bf0dd-436a-4588-a9c0-19fd6fdcee23","Name":"Emmas","Surname":"Mum"},{"ID":"6b9403c5-b728-4e96-bcb1-203e7472eec3","Name":"Owen","Surname":"Lima"},{"ID":"d52c08fb-4418-4600-960f-243ff4443ee6","Name":"Tim","Surname":"Lee"},{"ID":"e2aacf5b-8855-44ce-9338-3d39f8ab3349","Name":"Marcello","Surname":"MT"},{"ID":"578be087-8385-46d6-89de-3db31d352cbc","Name":"Carlyn","Surname":"Homegroup"},{"ID":"4c805825-2bee-447a-8b75-41ead17db33e","Name":"George","Surname":"Homegroup"},{"ID":"ae48804f-5e78-42c8-9ba0-4214c98a5a89","Name":"Isla","Surname":"Le Roux"},{"ID":"f8be2f4f-fedb-4863-8a84-44fddea84ea9","Name":"Peter","Surname":"Anderson"},{"ID":"15e7644d-ec43-44ff-a959-47e00112da6b","Name":"Kitty","Surname":"Corbett"},{"ID":"8fd7fccc-335c-4d5c-93b5-4b00f96a9950","Name":"Natalie","Surname":"Archibald"},{"ID":"09b5aad2-2cf1-488a-962b-4d692b05ddea","Name":"Miku","Surname":"Heally"},{"ID":"affa369e-5af3-4537-a0f4-71422956da41","Name":"Steven","Surname":"Corbett"},{"ID":"65f57da3-4f88-4798-9590-83b4ccecfc44","Name":"Tim","Surname":"Archibald"},{"ID":"53bfb451-f66f-4b6e-b430-8d13c95b30d8","Name":"Philip","Surname":"MT"},{"ID":"c7f22b9b-4030-4f82-9f75-bbb726cabb73","Name":"Vincent","Surname":"Van Der Walt"},{"ID":"232577be-3165-4316-a20d-c2f2a09c5382","Name":"Scott","Surname":"Lynn"},{"ID":"913508a1-5dca-4504-8caf-c8e3dc386fc0","Name":"Dan","Surname":"MT"},{"ID":"36054a07-b14d-4c1c-b35f-e00875dde7e5","Name":"Sarah","Surname":"MT"},{"ID":"f14e7d98-e040-4ba9-928f-f2ff48116b0b","Name":"Josh","Surname":"IrishDude"}]因此fiddler可以成功地解析它，但是在客户端，jquery ajax错误回调函数显示以下错误：
Error: No conversion from text to application/jsonwcf方法的定义如下：
[OperationContract]
[WebGet(ResponseFormat=WebMessageFormat.Json)]
public string GetPeople(Guid groupId)
{
using (SchedulerContext context = new SchedulerContext())
{
JavaScriptSerializer ser = new JavaScriptSerializer();
var query = from p in context.People
where p.Group_ID == groupId
select new
{
p.ID,
p.Name,
p.Surname
};
return ser.Serialize(query.ToArray());
}
}最后，调用jquery是：
$.ajax(
{
type: "GET",
dataType: "application/json",
contentType: "json",
data: { groupId: 'ae09a080-5d7c-4e92-9a87-591574b7c4b8' },
url: "WebAPI.svc/GetPeople",
error: function (jqXHR, textStatus, errorThrown) {
alert("error");
},
success: function (msg) {
alert(msg.d[0].Name);
}
}
);提前感谢！
更新：感谢@user1370958，离解决方案更近了一步。
当将错误回调函数更改为以下内容时，它会成功返回结果...
error: function (jqXHR, textStatus, errorThrown) {
var test = $.parseJSON(jqXHR.responseText);
var test2 = $.parseJSON(test.d);
alert(test2[0].Name);
},不知道为什么，但我必须解析结果，然后解析其中的嵌套对象。我假设如果我返回的任何类型包含复杂的对象，它也需要另一个解析……
回答 5
Stack Overflow用户
回答已采纳
发布于 2012-10-16 13:57:42
这里，"application/json"不是dataType属性的有效值。我在我的项目中将其更改为"json"，同样的问题也得到了解决。
请在这里查看详细信息(评论#7)：http://bugs.jquery.com/ticket/8216
Stack Overflow用户
发布于 2012-05-05 05:18:51
尝试在服务器端代码中添加MIME类型：
Response.ContentType = "application/json";Stack Overflow用户
发布于 2012-05-05 05:38:13
使用WCF 4.0，您可以添加一个名为automaticFormatSelectionEnabled的属性，该属性允许服务查看Accept请求中的HTTP头，以确定要返回的格式。只要您返回的是可序列化的，WCF就会为您处理正确的序列化。在jQuery ajax调用中，Accept标头是通过包含accepts: {json: "application/json"}添加的。
页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/10456240
复制相关文章
相似问题