What is the solution to Chinese garbled characters in Ajax?

Ajax Chinese garbled solutions include setting the character encoding of the request header, setting the character encoding of the response header on the server side, and using encodeURIComponent to encode Chinese. Detailed introduction: 1. Set the character encoding of the request header. Before sending the Ajax request, you can solve the problem of Chinese garbled characters by setting the character encoding of the request header. You can use the "setRequestHeader" method to set the "Content-Type" field. Character encoding is set to UTF-8 and so on.

#When using Ajax for data interaction, sometimes you will encounter the problem of Chinese garbled characters. This problem usually occurs due to inconsistent encoding between the front and back ends or incorrect character encoding settings. The following will introduce several methods to solve Ajax Chinese garbled characters.

1. Set the character encoding of the request header:

Before sending the Ajax request, you can solve the problem of Chinese garbled characters by setting the character encoding of the request header. You can use the `setRequestHeader` method to set the `Content-Type` field and set the character encoding to UTF-8. The sample code is as follows:

var xhr = new XMLHttpRequest();
xhr.open('POST', 'url', true);
xhr.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded;charset=UTF-8');
xhr.send(data);

2. Set the character encoding of the response header on the server side:

On the server side, you can solve the problem of Chinese garbled characters by setting the character encoding of the response header. You can set the `Content-Type` field of the response header in the server-side code and set the character encoding to UTF-8. The sample code is as follows (taking Java as an example):

response.setContentType("text/html;charset=UTF-8");

3. Use encodeURIComponent to encode Chinese Encoding:

When sending an Ajax request, you can use `encodeURIComponent` to encode Chinese to ensure that Chinese characters can be correctly passed to the server. The sample code is as follows:

var data = 'param=' + encodeURIComponent('中文');
var xhr = new XMLHttpRequest();
xhr.open('POST', 'url', true);
xhr.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded;charset=UTF-8');
xhr.send(data);

4. Convert character encoding on the server side:

If the data received by the server is garbled, you can character encode the received data on the server. Convert, convert garbled characters into correct Chinese characters. The sample code is as follows (taking Java as an example):

String param = new String(request.getParameter("param").getBytes("ISO-8859-1"), "UTF-8");

Summary:

By setting the character encoding of the request header, setting the character encoding of the response header, using encodeURIComponent to encode Chinese and in Methods such as character encoding conversion on the server side can effectively solve the problem of Ajax Chinese garbled characters. Choose the appropriate method according to the specific situation to solve the problem of Chinese garbled characters and ensure that the data can be transmitted and displayed correctly.

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