请问spring3 mvc 使用@InitBinder 出现报错信息，如何解决，谢谢！

Question

public class TestController3 {
@RequestMapping("/start3/{testdate}")
public String testDate(@PathVariable("testdate") Date testdate) {
System.out.println(testdate);
return "/test/start3";

}

@InitBinder
public void initBinder(WebRequestDataBinder binder) {
    binder.registerCustomEditor(Date.class, new CustomDateEditor(
            new SimpleDateFormat("yyyyMMdd"), false));

}

}

报错信息：

严重: Servlet.service() for servlet mvc threw exception
java.lang.IllegalStateException: Unsupported argument [org.springframework.web.bind.support.WebRequestDataBinder] for @InitBinder method: public void test.controller.TestController3.initBinder(org.springframework.web.bind.support.WebRequestDataBinder)
at org.springframework.web.bind.annotation.support.HandlerMethodInvoker.resolveInitBinderArguments(HandlerMethodInvoker.java:452)
at org.springframework.web.bind.annotation.support.HandlerMethodInvoker.initBinder(HandlerMethodInvoker.java:388)
at org.springframework.web.bind.annotation.support.HandlerMethodInvoker.resolvePathVariable(HandlerMethodInvoker.java:704)
at org.springframework.web.bind.annotation.support.HandlerMethodInvoker.resolveHandlerArguments(HandlerMethodInvoker.java:352)
at org.springframework.web.bind.annotation.support.HandlerMethodInvoker.invokeHandlerMethod(HandlerMethodInvoker.java:171)
at org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.invokeHandlerMethod(AnnotationMethodHandlerAdapter.java:426)
at org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.handle(AnnotationMethodHandlerAdapter.java:414)
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:790)
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:719)
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:644)
at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:549)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:617)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:849)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:454)
at java.lang.Thread.run(Thread.java:619)

Answer 1

[org.springframework.web.bind.support.WebRequestDataBinder] for @InitBinder method: public void test.controller.TestController3.initBinder(org.springframework.web.bind.support.WebRequestDataBinder)

initBinder传入了不支持的参数类型，此处参数类型可以是：
1、ServletRequestDataBinder
2、WebDataBinder