JSON字符编码 [英] JSON character encoding

问题描述

我的Java Web应用程式提交可传回JSON的AJAX要求，例如：

  {'value'：'aériennes'} 
  

当'aériennes'显示在网页中时，它显示为'aririennes'，因此我猜有一些字符编码的问题。 AJAX响应头包括

  Content-Type应用程序/ json 
  

它似乎不包括任何字符集信息。我想这需要改变成像

  Content-Type text / html; charset = iso-8859-1（或charset = utf8）
  

应用程序的服务器端Spring MVC，我想必须有一种方法来为每个响应设置默认字符集。

解决方案

症状表明，最初以UTF-8编码的JSON字符串已使用ISO-8859-1编码写入HTTP响应，并指示webbrowser将其显示为UTF-8。如果它是使用UTF-8编写的并显示为ISO-8859-1，那么你会看到aériennes 。如果它是使用ISO-8859-1显示的和，那么你会看到aïririennes。

要解决JSON字符串不正确地写为ISO-8859-1的问题，您需要配置您的webapp / Spring以使用UTF-8作为HTTP响应编码。

response.setCharacterEncoding（UTF- 8）;

不要更改内容类型标题。这对JSON是完全正确的，它显示为UTF-8。

My Java web application submits an AJAX request that returns JSON such:

{'value': 'aériennes'}

When 'aériennes' is displayed in the webpage, it appears as 'a�riennes', so I guess there's some kind of character encoding problem. The AJAX response headers include

Content-Type    application/json

which doesn't appear to include any charset information. I guess this needs to be changed to something like

Content-Type    text/html; charset=iso-8859-1      (or charset=utf8)

The server-side of the app is Spring MVC, and I guess there must be a way to set the default charset for each response?

解决方案

The symptoms indicate that the JSON string which was originally in UTF-8 encoding was written to the HTTP response using ISO-8859-1 encoding and the webbrowser was instructed to display it as UTF-8. If it was written using UTF-8 and displayed as ISO-8859-1, then you would have seen aériennes. If it was written and displayed using ISO-8859-1, then you would have seen a�riennes.

To fix the problem of the JSON string incorrectly been written as ISO-8859-1, you need to configure your webapp / Spring to use UTF-8 as HTTP response encoding. Basically, it should be doing the following under the covers:

response.setCharacterEncoding("UTF-8");

Don't change your content type header. It's perfectly fine for JSON and it is been displayed as UTF-8.

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