最近在实验Spring的时候遇到了一个问题：
SEVERE: Servlet.service() for servlet [DispatcherServlet] in context with path [/ExtProjectDemo] threw exception [Request processing failed; nested exception is org.springframework.validation.BindException: org.springframework.validation.BeanPropertyBindingResult: 2 errorsField error in object 'sysPersonModel' on field 'csrq': rejected value [1965-06-25]; codes [typeMismatch.sysPersonModel.csrq,typeMismatch.csrq,typeMismatch.java.util.Date,typeMismatch]; arguments [org.springframework.context.support.DefaultMessageSourceResolvable: codes [sysPersonModel.csrq,csrq]; arguments []; default message [csrq]]; default message [Failed to convert property value of type 'java.lang.String' to required type 'java.util.Date' for property 'csrq'; nested exception is org.springframework.core.convert.ConversionFailedException: Failed to convert from type java.lang.String to type java.util.Date for value '1965-06-25'; nested exception is java.lang.IllegalArgumentException]Field error in object 'sysPersonModel' on field 'ryid': rejected value []; codes [typeMismatch.sysPersonModel.ryid,typeMismatch.ryid,typeMismatch.int,typeMismatch]; arguments [org.springframework.context.support.DefaultMessageSourceResolvable: codes [sysPersonModel.ryid,ryid]; arguments []; default message [ryid]]; default message [Failed to convert property value of type 'java.lang.String' to required type 'int' for property 'ryid'; nested exception is java.lang.NumberFormatException: For input string: ""]] with root causeorg.springframework.validation.BindException: org.springframework.validation.BeanPropertyBindingResult: 2 errorsField error in object 'sysPersonModel' on field 'csrq': rejected value [1965-06-25]; codes [typeMismatch.sysPersonModel.csrq,typeMismatch.csrq,typeMismatch.java.util.Date,typeMismatch]; arguments [org.springframework.context.support.DefaultMessageSourceResolvable: codes [sysPersonModel.csrq,csrq]; arguments []; default message [csrq]]; default message [Failed to convert property value of type 'java.lang.String' to required type 'java.util.Date' for property 'csrq'; nested exception is org.springframework.core.convert.ConversionFailedException: Failed to convert from type java.lang.String to type java.util.Date for value '1965-06-25'; nested exception is java.lang.IllegalArgumentException]Field error in object 'sysPersonModel' on field 'ryid': rejected value []; codes [typeMismatch.sysPersonModel.ryid,typeMismatch.ryid,typeMismatch.int,typeMismatch]; arguments [org.springframework.context.support.DefaultMessageSourceResolvable: codes [sysPersonModel.ryid,ryid]; arguments []; default message [ryid]]; default message [Failed to convert property value of type 'java.lang.String' to required type 'int' for property 'ryid'; nested exception is java.lang.NumberFormatException: For input string: ""] at org.springframework.web.method.annotation.ModelAttributeMethodProcessor.resolveArgument(ModelAttributeMethodProcessor.java:111) at org.springframework.web.method.support.HandlerMethodArgumentResolverComposite.resolveArgument(HandlerMethodArgumentResolverComposite.java:75) at org.springframework.web.method.support.InvocableHandlerMethod.getMethodArgumentValues(InvocableHandlerMethod.java:156) 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:923) at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:852) at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:882) at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:789) at javax.servlet.http.HttpServlet.service(HttpServlet.java:646) at javax.servlet.http.HttpServlet.service(HttpServlet.java:727) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208) at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208) at cn.telchina.platform.filter.SafeFilter.doFilter(SafeFilter.java:103) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208) at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:88) at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:220) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:501) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:950) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408) at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1040) at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:607) at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:316) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) at java.lang.Thread.run(Thread.java:722)
使用的版本是：Spring3.1.2
如何解决呢？
解决参考文章：
PS:
有另外一种解决方案，所有的入参只接受一个String串，也就是将参数打包传递，传递到后台之后，自己解析，这样每个方法都只需要一个参数。
然后每个方法内部根据业务要求转换成bean，或者Map。
实际上也挺好，尤其在各种复杂参数的情况下。