How to solve BadMessageException : 400 Unable to parse form content issue while migrating java7 to java8 in spring application? - spring

Question

Because of java 7 deprecated by app-engine we have migrated our application to java 8 but after migrating the application we are getting org.eclipse.jetty.http.BadMessageException: 400 Unable to parse form content message after submitting the html form.
Can any one help me for the solution of this?
We are using : spring 3.1.0 and java 8
Here is my complete Stack-trace :
Exception Message is :
Request processing failed; nested exception is org.eclipse.jetty.http.BadMessageException: 400: Unable to parse form content
Complete stacktrace is : org.springframework.web.util.NestedServletException:
Request processing failed; nested exception is org.eclipse.jetty.http.BadMessageException: 400: Unable to parse form content at
org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:894) at
org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:789) at
javax.servlet.http.HttpServlet.service(HttpServlet.java:707) at
javax.servlet.http.HttpServlet.service(HttpServlet.java:790) at
org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:848) at
org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1772) at
com.gulfinfotech.eflow.filters.NameSpaceGoogleSecurityFilter.doFilter(NameSpaceGoogleSecurityFilter.java:207) at
org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1759) at
org.springframework.orm.jpa.support.OpenEntityManagerInViewFilter.doFilterInternal(OpenEntityManagerInViewFilter.java:147) at
org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76) at
org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1759) at
com.google.apphosting.utils.servlet.JdbcMySqlConnectionCleanupFilter.doFilter(JdbcMySqlConnectionCleanupFilter.java:60) at
org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1759) at
org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:582) at
org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:143) at
org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:524) at
org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:226) at
org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:143) at
org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:134) at
com.google.apphosting.runtime.jetty9.ParseBlobUploadHandler.handle(ParseBlobUploadHandler.java:119) at
org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1182) at
com.google.apphosting.runtime.jetty9.AppEngineWebAppContext.doHandle(AppEngineWebAppContext.java:171) at
org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:512) at
org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:185) at
org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1112) at
org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141) at
com.google.apphosting.runtime.jetty9.AppVersionHandlerMap.handle(AppVersionHandlerMap.java:296) at
org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:134) at
org.eclipse.jetty.server.Server.handle(Server.java:539) at
org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:333) at
com.google.apphosting.runtime.jetty9.RpcConnection.handle(RpcConnection.java:202) at
com.google.apphosting.runtime.jetty9.RpcConnector.serviceRequest(RpcConnector.java:81) at
com.google.apphosting.runtime.jetty9.JettyServletEngineAdapter.serviceRequest(JettyServletEngineAdapter.java:123) at
com.google.apphosting.runtime.JavaRuntime$RequestRunnable.dispatchServletRequest(JavaRuntime.java:699) at
com.google.apphosting.runtime.JavaRuntime$RequestRunnable.dispatchRequest(JavaRuntime.java:661) at
com.google.apphosting.runtime.JavaRuntime$RequestRunnable.run(JavaRuntime.java:631) at
com.google.apphosting.runtime.JavaRuntime$NullSandboxRequestRunnable.run(JavaRuntime.java:825) at
com.google.apphosting.runtime.ThreadGroupPool$PoolEntry.run(ThreadGroupPool.java:273) at
java.lang.Thread.run(Thread.java:745) Caused by: org.eclipse.jetty.http.BadMessageException: 400: Unable to parse form content at
org.eclipse.jetty.server.Request.getParameters(Request.java:372) at
org.eclipse.jetty.server.Request.getParameter(Request.java:1014) at
org.springframework.web.context.request.ServletWebRequest.getParameter(ServletWebRequest.java:117) at
org.springframework.web.servlet.mvc.method.annotation.ServletModelAttributeMethodProcessor.getRequestValueForAttribute(ServletModelAttributeMethodProcessor.java:98) at
org.springframework.web.servlet.mvc.method.annotation.ServletModelAttributeMethodProcessor.createAttribute(ServletModelAttributeMethodProcessor.java:73) at
org.springframework.web.method.annotation.ModelAttributeMethodProcessor.resolveArgument(ModelAttributeMethodProcessor.java:102) at
org.springframework.web.method.support.HandlerMethodArgumentResolverComposite.resolveArgument(HandlerMethodArgumentResolverComposite.java:74) at
org.springframework.web.method.support.InvocableHandlerMethod.getMethodArgumentValues(InvocableHandlerMethod.java:155) at
org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:117) at
org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:96) at
org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:617) at
org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:578) at
org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:80) at
org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:900) at
org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:827) at
org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:882) ... 38 more
Caused by: org.eclipse.jetty.util.Utf8Appendable$NotUtf8Exception: Not valid UTF8! byte 92 in state 0 at
org.eclipse.jetty.util.Utf8Appendable.appendByte(Utf8Appendable.java:247) at
org.eclipse.jetty.util.Utf8Appendable.append(Utf8Appendable.java:157) at
org.eclipse.jetty.util.UrlEncoded.decodeUtf8To(UrlEncoded.java:522) at
org.eclipse.jetty.util.UrlEncoded.decodeTo(UrlEncoded.java:572) at
org.eclipse.jetty.server.Request.extractFormParameters(Request.java:521) at
org.eclipse.jetty.server.Request.extractContentParameters(Request.java:453) at
org.eclipse.jetty.server.Request.getParameters(Request.java:368) ... 53 more

Answer 1

To solve this you need to to set accept-charset="UTF-8" in form tag
because jetty used UTF-8 for decoding the request.

Answer 2

Have you tried using the Spring CharacterEncodingFilter?
https://docs.spring.io/spring-framework/docs/current/javadoc-api/org/springframework/web/filter/CharacterEncodingFilter.html
with setForceEncoding(true)

Answer 3

try to setup multipart-config in web.xml
<multipart-config>
<location>/tmp</location>
<max-file-size>20848820</max-file-size>
<max-request-size>1073741824</max-request-size>
<file-size-threshold>1048576</file-size-threshold>
</multipart-config>
or add the following code if in spring boot
/**
* multipart config
*/
#Bean
public MultipartConfigElement multipartConfigElement() {
MultipartConfigFactory factory = new MultipartConfigFactory();
factory.setMaxFileSize("1024MB");
factory.setMaxRequestSize("1024MB");
return factory.createMultipartConfig();
}