Fix garbled Chinese response in browser. close #1559

[xxm404]

https://github.com/apache/incubator-apisix/blob/master/Contributing.md#how-to-add-a-new-feature-or-change-an-existing-one

Summary

Modify APISIX Nginx template to solve #1559

Full changelog

• Add charset utf-8; in APISIX Nginx config template

Issues resolved

Fix #1559

[moonming]

@xxm404 it will be better if you can add test cases for this PR

[xxm404]

@xxm404 it will be better if you can add test cases for this PR

This problem only occurred in the browser, how to test by test Nginx

[griffenliu]

Hi, @xxm404 :
Consider the following code for increased flexibility?

include mime.types;
{% if http.charset then %}
charset {* http.charset *};
{% end %}

[xxm404]

Hi, @xxm404 :
Consider the following code for increased flexibility?

include mime.types;
{% if http.charset then %}
charset {* http.charset *};
{% end %}

Good idea, But in my opinion, Nginx charset won't be modified frequently, We shouldn't complicate config.yaml

[membphis]

@xxm404 many thx, merged already