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This article focuses on "how to solve the problem of garbled Chinese characters obtained by the recipient of the HttpClient request". Interested friends may wish to have a look at it. The method introduced in this paper is simple, fast and practical. Now let the editor take you to learn "how to solve the problem of garbled Chinese characters obtained by the recipient of the HttpClient request".

Problem description

Spring Boot2.0 version project, which uses HttpClient to request data. The requested parameters contain Chinese characters. The request header is set as follows.

Headers.put ("Content-Type", "application/json; charset=utf-8")

There is no problem printing data output from my console.

Solution

After the request boss learned that the binding force of header setting is very limited, only constraining the request format, request body setting and so on, for coding problems, to use java.net.URLEncoder.encode (value) for transcoding processing, in the receiving side, use java.net.URLEncoder.decode (value) and then turn back.

Summary

Reference standard

According to the HTTP protocol, if there are special characters (such as: &, @, etc.) in the value of the passed parameter, it is necessary to URL Encoding the value so that the receiver of the request can receive the correct parameter value. In this case, the data to be signed should be the original value rather than the value after encoding. For example, when you need to digitally sign the request parameter email when calling an API, the data to be signed should be email=test@msn.com, not email=test%40msn.com.

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