Why does garbled code appear when ajax passes json?

This time I will bring you why garbled characters appear when ajax transmits json, and how to solve the problem of garbled characters when ajax transmits json. take a look. I use Spring

mvc

. I transmit a json to the front desk in the controller layer. The background display is fine. Chinese characters are displayed normally but when I reach the front desk, Chinese characters become question marks. .

Later I discovered that because @ResponseBody is used to return json in the controller, and the implementation class of @ResponseBody in the spring source code found that its default encoding is iso-8859-1, and the encoding used by the project is utf-8 , so there will be garbled characters when transmitting Chinese.

Here I used annotations to solve the problem:

@RequestMapping(value="/echarts.do", produces = "application/json; charset=utf-8")

This method is more suitable for the new version of spring. The version of this project:

<spring.version>4.1.4.RELEASE</spring.version>

I believe you have read the case in this article You have mastered the method. For more exciting information, please pay attention to other related articles on the php Chinese website!

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