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我正在尝试使用 jQuery.getJSON 从我自己不拥有的域中获取数据。我过去已经让它工作了，但这次它总是失败。我在浏览器中得到响应，但随后 Chrome 说SyntaxError: Unexpected token :，Firefox 说invalid label。

这有一些特点。假设代码是 MY_JSON_RESPONSE （不是变量，只是一个“别名”）。这些都返回预期的对象：

a = MY_JSON_RESPONSE;
eval(MY_JSON_RESPONSE);

这是我提出的要求：

$.getJSON("http://xxx.yyy.zzz/abc?callback=?",
   function(data) {
     console.log(data);
   });

编辑：以下是匿名响应数据：

{"aaaaaaa":"aaaaaaaa aaaaa aaa aaaaaaaaaa","aaaaa":"aaaaaaaa aaaaa aaa","aa":"0000000","aaaa_aaaaaaa":"aaa aaaaa","aaaaaaa_aaaaaaa":"aa aaa aaaaaaaa aa aaaaaaaa aaa aaaaaaa aaaaaa aaa aaa aaaaaaaa aa aaaaaaaa aa aaaaaa aaaaa aaa aaaaa. aaa aaaaaaaa aaaaa aaa aaaaaaaaaa aaaaaaaa aaaaa aaaaa aaaaaaaa aaaaaaaaaaa aaaaaaaaaa aa aaaa 00 aaaaaaa aaaaaaaaa aa aaa aaaaaaaa aaaaa aaa, aa aaaaaaaaaaa aaaaaaaaaaaaa aaaaaaaa aaaaaaaaaa aaaaaaaaaa aaaaaa, aaaaaaaaa aaa aaaaaaa aaaaaaaa. 00% aa aaaaaaa aaaaaa aaaaa aaaaa aaaaaaaaaaaaa aaaaa aaaaaaaaaaaaa.","aaaaaaaaa":[{"aaaaaa":"aaaaa aaa aaaaaa  aaaaaaaa","aaaaaaa":"aaaaaaaa aa aaaaaa aaa aaaa","aaaa":"00\/00\/00","aaaaaa":"\u00a000.00","aaaa_aaa":"\u00a00.00"},{"aaaaaa":"aaa","aaaaaaa":"aaaaaaaa aaaa aa &aaaa;aaaaa aaa aaaaaaaaaa aaaaaaaaa&aaaa; - aaa aaa aa, aaaaa aaa a aaaa aaaaa!","aaaa":"00\/00\/00","aaaaaa":"\u00a000.00","aaaa_aaa":"\u00a000.00"},{"aaaaaa":"aaaaa","aaaaaaa":"aaaa aaaa aaaa!!!!","aaaa":"00\/00\/00","aaaaaa":"\u00a000.00","aaaa_aaa":"\u00a00.00"},{"aaaaaa":"aaa\/aaa","aaaaaaa":"aaaaaaa aaaaa aaaa aaa aaaa aaaaa aaa aaaaa aaa aaaaaaa aaaa!","aaaa":"00\/00\/00","aaaaaa":"\u00a000.00","aaaa_aaa":""},{"aaaaaa":"aaaaaaaaa","aaaaaaa":"","aaaa":"00\/00\/00","aaaaaa":"\u00a000.00","aaaa_aaa":""},{"aaaaaa":"aa (aaaaaaa &aaa; aaaaaaaaa)","aaaaaaa":"","aaaa":"00\/00\/00","aaaaaa":"\u00a0000.00","aaaa_aaa":""},{"aaaaaa":"aaaaa  aaaaaaaa","aaaaaaa":"","aaaa":"00\/00\/00","aaaaaa":"\u00a000.00","aaaa_aaa":"\u00a00.00"},{"aaaaaa":"aaaaaa aaaaaa","aaaaaaa":"","aaaa":"00\/00\/00","aaaaaa":"","aaaa_aaa":""},{"aaaaaa":"aaaaaa aaaaaaaa","aaaaaaa":"aaaa aaaaaaa aaaaaaaaa","aaaa":"00\/00\/00","aaaaaa":"\u00a000.00","aaaa_aaa":""},{"aaaaaa":"aaaaaa aaaaaaaaaaa","aaaaaaa":"aaaaa aaaaaa�a aaa, aaa! aaaa aaaaaaaa aa aaa aaa! :-) --aaa","aaaa":"00\/00\/00","aaaaaa":"","aaaa_aaa":""},{"aaaaaa":"aaaaaa aaaa - aaaaaaaa aaaaaa aaa","aaaaaaa":"aaaaaa aa aaa aaa aaaaaaaa aaaaa aaaaaa aa aaaa aa aaa aaaaa aaa aaaaa. aaaa aaaa aaaaaa aaaaaaaaa !!","aaaa":"00\/00\/00","aaaaaa":"\u00a000.00","aaaa_aaa":""},{"aaaaaa":"aaa aaaaaaaaa","aaaaaaa":"aa aaaaaa aaaa aaaaaaaa aa aaaa aa aaaa aa a aaaa aaaaa aaa aaaaaaaaaa. aaaa aa aa aaaaaa aa a aaaa aaaaa.","aaaa":"00\/00\/00","aaaaaa":"\u00a000.00","aaaa_aaa":""},{"aaaaaa":"aaaaaaaaa aaa aaaaaaaaaaa aaaaaaa aaaaaa","aaaaaaa":"aaaaa aaaaa. aaaa aa aaa aaaaaa aaaaaaaaa!!","aaaa":"00\/00\/00","aaaaaa":"\u00a000.00","aaaa_aaa":""},{"aaaaaa":"aaaaa  aaaaa","aaaaaaa":"","aaaa":"00\/00\/00","aaaaaa":"\u00a000.00","aaaa_aaa":"\u00a00.00"},{"aaaaaa":"aaaaaaaaa aaaaaa","aaaaaaa":"aaaaaaa aaa aaaa aaaaaa�a aaaaaaaaa aaaa","aaaa":"00\/00\/00","aaaaaa":"\u00a0000.00","aaaa_aaa":"\u00a000.00"},{"aaaaaa":"aaaaaaa aaaaaa","aaaaaaa":"aaaaaaaaa aaaaa, aaa! aaaaaaa &aaa; aaaaa","aaaa":"00\/00\/00","aaaaaa":"\u00a000.00","aaaa_aaa":"\u00a00.00"},{"aaaaaa":"aaaaa aaaaaaaa","aaaaaaa":"aaaaaaaa aaaaaaa - aaaaaaa aaaaaaaaa a aaa aaa aaaaaa!","aaaa":"00\/00\/00","aaaaaa":"\u00a000.00","aaaa_aaa":""},{"aaaaaa":"aaaaa aaaaaa","aaaaaaa":"aaaaaaaaaaaa - aaa!","aaaa":"00\/00\/00","aaaaaa":"\u00a0000.00","aaaa_aaa":""},{"aaaaaa":"aaaaa aaaaaaaaaaa","aaaaaaa":"aaaa aaaa!!!","aaaa":"00\/00\/00","aaaaaa":"\u00a00.00","aaaa_aaa":""},{"aaaaaa":"aaaaa aaaaaaa","aaaaaaa":"aaaa aaaa aaaaa, aaaaaaa, aaaaaaa, aaaaa, aaa, aaaa, aaa, aaaaaaaa, aaaa, aaa, aaaaa, aaa, aaa, aaaaa, aaa, aaaa, aaaa, aaaa, aaaaa, aaa, aaaaaaaa","aaaa":"00\/00\/00","aaaaaa":"\u00a000.00","aaaa_aaa":""},{"aaaaaa":"aaaaaaaa aaa","aaaaaaa":"","aaaa":"00\/00\/00","aaaaaa":"\u00a000.00","aaaa_aaa":""},{"aaaaaa":"aaaaa aaaaaa","aaaaaaa":"aaaa aaa aa aa aaaa aa a aaaaaaa aa aaaaa! aaa aaa aaaaa!","aaaa":"00\/00\/00","aaaaaa":"\u00a000.00","aaaa_aaa":""},{"aaaaaa":"aaaaaaa aaaaaaa","aaaaaaa":"","aaaa":"00\/00\/00","aaaaaa":"\u00a000.00","aaaa_aaa":""},{"aaaaaa":"aaaaaa aaaaaaaa","aaaaaaa":"aa aa aa! :)","aaaa":"00\/00\/00","aaaaaa":"\u00a000.00","aaaa_aaa":""},{"aaaaaa":"aaaaaa aaaaaaaaa","aaaaaaa":"aaaa a aaaaaa aaaaaaaaa aaaa aa aa aaa :)","aaaa":"00\/00\/00","aaaaaa":"","aaaa_aaa":""},{"aaaaaa":"aaa-aaaaaaa aaaaaaaa","aaaaaaa":"aaaa aaaaaaaa aa aa aaa aaaa aa aa aaaaaaaaaaa, aaaa a. aaaaaaaa","aaaa":"00\/00\/00","aaaaaa":"\u00a000.00","aaaa_aaa":""},{"aaaaaa":"aaaaaaa aaaa","aaaaaaa":"","aaaa":"00\/00\/00","aaaaaa":"\u00a000.00","aaaa_aaa":""},{"aaaaaa":"aaaaaaa aaaa","aaaaaaa":"a aaaaaaaa aa aaa aaaaaaaa aaaaa aaa aa aaaaa aa aaaaa aaa aaaaa aaaaa  aa aaa aaaaaa aa aaaaaaaaa.","aaaa":"00\/00\/00","aaaaaa":"","aaaa_aaa":""},{"aaaaaa":"aaaaaaa aaaaaaa","aaaaaaa":"aaaaa aaaaaaaa aaa aaaa aaaaaaa aaaa aaaaaa aaa!","aaaa":"00\/00\/00","aaaaaa":"\u00a000.00","aaaa_aaa":""},{"aaaaaa":"aaa aaaa","aaaaaaa":"aaaa aaaa aaaa aaaa aaaaaaaaaaa aaaa aaa aaa aaaaaaaaa aaaa aaa aa","aaaa":"00\/00\/00","aaaaaa":"\u00a000.00","aaaa_aaa":"\u00a00.00"}],"aaaa_aaaaaaa":"","aaaa_aaa":"\u00a0000.00","aaaaaaaaa_aaaaaa":"\u00a00,000.00","aaaaaaaaa_aaaaa":"\u00a00,000.00","aaaaaaa_aaaa":"aaaa:\/\/aaa.aaaaaaaaaa.aaa\/\/aaaaa\/aaaaaaa.aaaa?aaaa=aaaaaaa&aaaaaaaaa=aaaaaaaaaaa&aaaaa=000&aaaaaa=000&aaa=aaaa_aaaa0.aaa","aaaaaaaaa_aaaaaa":"\u00a00,000.00","aaaaaaaaa_aaaaaaa":"\u00a00.00","aaa_aaaaaa":true,"aaaaaaaaaa_aaaaaaaa":00}

我想避免在我自己的域的服务器上执行此操作，以最大程度地减少服务器负载。

4

4 回答 4

1

jQuery 1.4 中的 JSON 解析比过去的版本更严格。根据您的浏览器，它可能使用与 eval 不同的原生 JSON 解析。一个很大的不同是，现在，所有键必须用双引号括起来，而不是单引号。正如您所说， eval 不会出错，因为 JS 对引用属性名称并不严格，但它会导致 JSON 解析失败。

在将项目转换为 jq 1.4 时，我自己遇到了这个问题，因为我有一些旧代码手动构建 json 字符串。例如

return "{'a':12}";  // fails parsing due to single quotes

使用内置的 json 库要好得多：

return '{"a":12}'; // works
return json_encode(array('a'=>12)); // preferred!
return json.dumps({'a':12}) # etc.

因为它们总是产生有效的 json。

于 2010-07-29T19:33:41.853 回答
0

JSON 示例无效。它包括这个子字符串：

}, {

也就是说，它结束一个对象并开始另一个对象。所以它似乎是一个对象数组，除了没有括起来的方括号。

编辑：我的错！它实际上有一个嵌套数组。也许您应该在生成它时“漂亮地打印”它，以便更容易看出问题所在？

于 2010-07-30T09:00:48.050 回答
0

有趣的是，根据http://jsonformatter.curiousconcept.com/，JSON是有效的。

正如其他人所指出的那样...... jQuery 1.4 不会接受格式错误的 JSON，但是早期版本会（如果你出于某种疯狂的原因想要继续前进。）

您如何在代码中调用实际的 JSON 数据元素？我遇到了几次问题......完全有效的 JSON，但在 jQuery 中不容易调用。

一个例子：tumblr（博客引擎）API ...出于某种原因，他们使用了......“-”......所以对于博客文章的“正文”，他们有“常规正文”......这显然是jQuery恨与激情。

你会认为你可以做...

json.posts[2].regular-body

但这会出错，所以你需要 [] ...

json.posts[2]['regular-body']

所以 ...

如果您可以更详细地说明如何调用 JSON 数据元素，它可能会有所帮助吗？

于 2010-07-30T09:38:51.093 回答
0

我现在也遇到了同样的问题，我的服务器以正确的 json 数据响应。我遵循您使用的相同代码模式。在发表评论之前，我对其进行了研发，以解决此错误。正如我们使用“回调=？” 在 url 中，它倾向于将对象请求为 JSONP。它假定响应以 JSONP 形式出现，但响应以纯 JSON 格式出现。一旦得到响应，它就会尝试根据 JSONP 解析，而不是像 JSON。如果我错了，请指正，如果您的问题已解决，请告诉我。谢谢。

于 2014-03-14T12:09:33.613 回答