如何配置Spring引导以转换以不同于UTF-8编码的请求

Question

问题

我有一个使用ApacheCXF(JAX-RS(和Spring的遗留应用程序，它接受请求体中内容类型为application/json; charset=Windows-1252的请求。现在，我正在将这个应用程序迁移到Spring Boot 2，我遇到了这个问题：

我的Spring Boot应用程序无法正确处理此请求：

{
"text": "Apenas um teste técnico çâãéüûà"
}

它处理为：

{
"text": "Apenas um teste técnico çâãéüûà"
}

如果客户端使用内容类型application/json; charset=UTF-8，一切都可以，但我无法控制我的客户端，所以我无法确保它。

我用一些server.servlet.encoding配置、CharacterEncodingFilter配置和RequestBodyAdvice做了很多测试，但到目前为止还没有成功。

下面您可以看到为Spring类启用了跟踪的测试：

使用字符集UTF-8的POST-OK

2022-11-01 21:02:20.695 TRACE 12932 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet        : POST "/string-encoding/v1/my-string", parameters={}, headers={masked} in DispatcherServlet 'dispatcherServlet'
2022-11-01 21:02:20.695 TRACE 12932 --- [nio-8080-exec-1] o.s.b.f.s.DefaultListableBeanFactory     : Returning cached instance of singleton bean 'stringTestController'
2022-11-01 21:02:20.695 TRACE 12932 --- [nio-8080-exec-1] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped to com.sap.string.encoding.controller.StringTestController#postString(HttpServletRequest, MyString)
2022-11-01 21:02:39.166 TRACE 12932 --- [nio-8080-exec-1] m.m.a.RequestResponseBodyMethodProcessor : Read "application/json;charset=UTF-8" to [MyString{text='Apenas um teste técnico çâãéüûà'}]
2022-11-01 21:02:39.166 TRACE 12932 --- [nio-8080-exec-1] o.s.web.method.HandlerMethod             : Arguments: [org.apache.catalina.connector.RequestFacade@48c529f2, MyString{text='Apenas um teste técnico çâãéüûà'}]
Encoding: UTF-8, Text: Apenas um teste técnico çâãéüûà
2022-11-01 21:02:39.166 DEBUG 12932 --- [nio-8080-exec-1] o.s.w.s.m.m.a.HttpEntityMethodProcessor  : Using 'application/json', given [*/*] and supported [application/json, application/*+json, application/json, application/*+json]
2022-11-01 21:02:39.166 TRACE 12932 --- [nio-8080-exec-1] o.s.w.s.m.m.a.HttpEntityMethodProcessor  : Writing [MyString{text='Apenas um teste técnico çâãéüûà'}]
2022-11-01 21:02:39.716 TRACE 12932 --- [nio-8080-exec-1] s.w.s.m.m.a.RequestMappingHandlerAdapter : Applying default cacheSeconds=-1
2022-11-01 21:02:39.716 TRACE 12932 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet        : No view rendering, null ModelAndView returned.
2022-11-01 21:02:39.716 DEBUG 12932 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet        : Completed 200 OK, headers={masked}
2022-11-01 21:02:39.716 TRACE 12932 --- [nio-8080-exec-1] o.s.b.w.s.f.OrderedRequestContextFilter  : Cleared thread-bound request context: org.apache.catalina.connector.RequestFacade@48c529f2

cURL UTF-8

curl --request POST 
--url http://localhost:8080/string-encoding/v1/my-string 
--header 'Content-Type: application/json; charset=UTF-8' 
--data '{
"text": "Apenas um teste técnico çâãéüûà"
}'

使用字符集Windows-1252的POST-错误

2022-11-01 21:01:26.759 TRACE 12932 --- [nio-8080-exec-2] o.s.web.servlet.DispatcherServlet        : POST "/string-encoding/v1/my-string", parameters={}, headers={masked} in DispatcherServlet 'dispatcherServlet'
2022-11-01 21:01:26.767 TRACE 12932 --- [nio-8080-exec-2] o.s.b.f.s.DefaultListableBeanFactory     : Returning cached instance of singleton bean 'stringTestController'
2022-11-01 21:01:26.767 TRACE 12932 --- [nio-8080-exec-2] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped to com.sap.string.encoding.controller.StringTestController#postString(HttpServletRequest, MyString)
2022-11-01 21:01:42.091 TRACE 12932 --- [nio-8080-exec-2] m.m.a.RequestResponseBodyMethodProcessor : Read "application/json;charset=Windows-1252" to [MyString{text='Apenas um teste técnico çâãéüûà'}]
2022-11-01 21:01:42.107 TRACE 12932 --- [nio-8080-exec-2] o.s.web.method.HandlerMethod             : Arguments: [org.apache.catalina.connector.RequestFacade@48c529f2, MyString{text='Apenas um teste técnico çâãéüûà'}]
Encoding: UTF-8, Text: Apenas um teste técnico çâãéüûà
2022-11-01 21:01:42.137 DEBUG 12932 --- [nio-8080-exec-2] o.s.w.s.m.m.a.HttpEntityMethodProcessor  : Using 'application/json', given [*/*] and supported [application/json, application/*+json, application/json, application/*+json]
2022-11-01 21:01:42.137 TRACE 12932 --- [nio-8080-exec-2] o.s.w.s.m.m.a.HttpEntityMethodProcessor  : Writing [MyString{text='Apenas um teste técnico çâãéüûà'}]
2022-11-01 21:01:43.526 TRACE 12932 --- [nio-8080-exec-2] s.w.s.m.m.a.RequestMappingHandlerAdapter : Applying default cacheSeconds=-1
2022-11-01 21:01:43.526 TRACE 12932 --- [nio-8080-exec-2] o.s.web.servlet.DispatcherServlet        : No view rendering, null ModelAndView returned.
2022-11-01 21:01:43.526 DEBUG 12932 --- [nio-8080-exec-2] o.s.web.servlet.DispatcherServlet        : Completed 200 OK, headers={masked}
2022-11-01 21:01:43.526 TRACE 12932 --- [nio-8080-exec-2] o.s.b.w.s.f.OrderedRequestContextFilter  : Cleared thread-bound request context: org.apache.catalina.connector.RequestFacade@48c529f2

cURL Windows-1252

curl --request POST 
--url http://localhost:8080/string-encoding/v1/my-string 
--header 'Content-Type: application/json; charset=Windows-1252' 
--data '{
"text": "Apenas um teste técnico çâãéüûà"
}'

问题

我的Spring引导应用程序可以完美地使用UTF-8运行，并且可以正确地处理这些情况下的请求。我只需要确保向后兼容性，因为它在遗留应用程序中工作。

我需要一些自定义的过滤器来从Windows-1252转换为UTF-8吗？或者在MappingJackson2HttpMessageConverter中进行一些配置？

Answer 1

此日志行：

Apenas um teste técnico çâãéüûà 

清楚地表明UTF-8字符串被解释为windows-1252(而不是相反(。

原因是：你的卷曲测试是错误的。您正在发送一个UTF-8字符串，但声称它在windows-1252中。

为了正确地进行测试，您应该使用JSON内容创建一个文件，确保它在windows-1252中编码，并使用如下命令：

curl -d @test-1252.json -H "Content-Type: application/json; charset=windows-1252" http://localhost:8080/string-encoding/v1/my-string