SpringMVC跨服务器上传文件出现的问题
一、上传文件文件名有中文，会报400错！
Type 异常报告
消息 Request processing failed; nested exception is com.sun.jersey.api.client.UniformInterfaceException: PUT http://localhost:9090/Springmvc_uploadServer/uploads/cc24a16106b34d179555cceea1cc2b24QQ图片20200720135759.jpg returned a response status of 400 Bad Request
描述 服务器遇到一个意外的情况，阻止它完成请求。
Exception
org.springframework.web.util.NestedServletException: Request processing failed; nested exception is com.sun.jersey.api.client.UniformInterfaceException: PUT http://localhost:9090/Springmvc_uploadServer/uploads/cc24a16106b34d179555cceea1cc2b24QQ图片20200720135759.jpg returned a response status of 400 Bad Request
org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1014)
org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:909)
javax.servlet.http.HttpServlet.service(HttpServlet.java:660)
org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:883)
javax.servlet.http.HttpServlet.service(HttpServlet.java:741)
org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201)
org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119)
Root Cause
com.sun.jersey.api.client.UniformInterfaceException: PUT http://localhost:9090/Springmvc_uploadServer/uploads/cc24a16106b34d179555cceea1cc2b24QQ图片20200720135759.jpg returned a response status of 400 Bad Request
com.sun.jersey.api.client.WebResource.voidHandle(WebResource.java:709)
com.sun.jersey.api.client.WebResource.put(WebResource.java:208)
com.example.controller.TestController2.testFileUpload3(TestController2.java:119)
sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
java.lang.reflect.Method.invoke(Method.java:498)
org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:190)
org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:138)
org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:105)
org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:879)
org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:793)
org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:87)
org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1040)
org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:943)
org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1006)
org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:909)
javax.servlet.http.HttpServlet.service(HttpServlet.java:660)
org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:883)
javax.servlet.http.HttpServlet.service(HttpServlet.java:741)
org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201)
org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119)
解决方法：删除上传文件名称的中文部分！
二、405错误
解决方法：改一下tomcat权限：修改readonly为false！
相关配置(在tomcat/conf/web.xml中加):
<init-param>
<param-name>readonly</param-name>
<param-value>false</param-value>
</init-param>
三、409错误（接收文件的那一端没有生成指定的文件夹，如：upload文件夹）
解决方法：手动在接收端的WebApp下新建upload文件夹！