java 如何配置 spring boot 应用程序以支持 UTF-8 和 GBK 编码？
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How to config spring boot application to support both UTF-8 and GBK encode?
提问by NikoTung
I am using spring boot in my project and I run some encoding issue.
我在我的项目中使用 spring boot 并且我运行了一些编码问题。
In the project, there is a controller(below) which accept request with a content type header ,"application/x-www-form-urlencoded;charset=GBK".
在项目中，有一个控制器（下面）接受内容类型标题为“application/x-www-form-urlencoded;charset=GBK”的请求。
@RequestMapping(value = "/notify",headers ={"Content-Type=application/x-www-form-urlencoded;charset=GBK"} , method = RequestMethod.POST, produces = "application/x-www-form-urlencoded; charset=GBK")
public ResponseEntity<String> notify(@RequestParam(name = "p") String plain, @RequestParam("s") String signature), HttpServletRequest request){}
When the third party invoke this api ,they encode the request body by GBK.Once the body contain Chinese charsets,the parameter I got is wrong,which is not human readable, something like this "result???????".
当第三方调用这个api时，他们用GBK对请求体进行编码。一旦正文包含中文字符集，我得到的参数是错误的，不是人类可读的，类似于“结果???????”。
Because the client send the request body with GBK encode,but the spring boot decode the request body with UTF-8 which is the default charset encode of spring boot.
因为客户端发送的请求体使用 GBK 编码，但是 Spring Boot 使用 UTF-8 解码请求体，这是 Spring Boot 的默认字符集编码。
The project is available different third-parties,most of them are using UTF-8,so I can not change the project encode to GBK by config the yml file with the following:
该项目可用于不同的第三方，其中大多数使用 UTF-8，因此我无法通过使用以下配置 yml 文件将项目编码更改为 GBK：
spring:
http:
encoding:
charset: GBK
enabled: true
So my first thought is to reverse the wrong string I got.But I fail with the following test.
所以我的第一个想法是反转我得到的错误字符串。但我在以下测试中失败了。
String para = "p=result中文的&s=ad98adj";
byte[] bytes = para.getBytes("GBK");
ByteChunk byteChunk = new ByteChunk();
byteChunk.setBytes(bytes , 0 , bytes.length);
byteChunk.setCharset(Charset.forName("utf-8"));
String receive = byteChunk.toString();//this is the wrong string
//reverse
byteChunk.reset();
bytes = receive.getBytes("GBK");
byteChunk.setBytes(bytes , 0 ,bytes.length);
byteChunk.setCharset(Charset.forName("GBK"));
receive = byteChunk.toString(); //still the wrong string
So How can I use a single spring boot application to support both GBK and UTF-8 encode request.
那么如何使用单个 spring 启动应用程序来支持 GBK 和 UTF-8 编码请求。
回答by NikoTung
Adding the CharacterEncodingFilter bean can solve the problem ,seeing form https://github.com/spring-projects/spring-boot/issues/1182
添加CharacterEncodingFilter bean可以解决问题，见表格https://github.com/spring-projects/spring-boot/issues/1182
@Bean
CharacterEncodingFilter characterEncodingFilter() {
CharacterEncodingFilter filter = new CharacterEncodingFilter();
filter.setEncoding("UTF-8");
filter.setForceEncoding(true);
return filter;
}
回答by rougou
I had a similar problem and found that Spring Boot has "forceEncoding" enabled by default. This causes the request charset to be overridden and set to UTF-8 every time in their filter.
我遇到了类似的问题，发现 Spring Boot 默认启用了“forceEncoding”。这会导致请求字符集被覆盖并每次在它们的filter 中设置为 UTF-8 。
See Appendix A. Common application properties
The key part is:
关键部分是：
Defaults to true when "force" has not been specified.
当未指定“force”时，默认为 true。
So setting either
所以设置要么
spring.http.encoding.force=false
or
或者
spring.http.encoding.force-request=false
Should solve your problem, as long as the request has the correct headers.
只要请求具有正确的标头，就应该可以解决您的问题。
