我只是一个新手到春天MVC下面是我的代码,当我尝试去bye
我获得以下错误找不到@PathVariable [pathVars]在@RequestMapping Spring MVC的
Could not find @PathVariable [pathVars] in @RequestMapping Spring MVC
以下是我的代码
package com.springapp.mvc;
import org.springframework.stereotype.Controller;
import org.springframework.ui.ModelMap;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.servlet.ModelAndView;
import java.util.Map;
@Controller
public class HelloController {
@RequestMapping("/")
public String printWelcome(ModelMap model) {
model.addAttribute("message", "Hello world!");
return "hello";
}
@RequestMapping("/runThis/{bye}/{hye}")
public ModelAndView printBye(@PathVariable Map<String,String> pathVars) {
String Bye = pathVars.get("bye");
String Hye = pathVars.get("hye");
ModelAndView modelAndView = new ModelAndView();
modelAndView.addObject("message", "you are"+Bye+ "AND Here COmes" +Hye+"!");
return modelAndView;
}
}
EDIT Full Stack。
type Exception report
message Request processing failed; nested exception is org.springframework.web.bind.annotation.support.HandlerMethodInvocationException: Failed to invoke handler method [public org.springframework.web.servlet.ModelAndView com.springapp.mvc.HelloController.printBye(java.util.Map)]; nested exception is java.lang.IllegalStateException: Could not find @PathVariable [pathVars] in @RequestMapping
description The server encountered an internal error that prevented it from fulfilling this request.
exception
org.springframework.web.util.NestedServletException: Request processing failed; nested exception is org.springframework.web.bind.annotation.support.HandlerMethodInvocationException: Failed to invoke handler method [public org.springframework.web.servlet.ModelAndView com.springapp.mvc.HelloController.printBye(java.util.Map)]; nested exception is java.lang.IllegalStateException: Could not find @PathVariable [pathVars] in @RequestMapping
org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:978)
org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:857)
javax.servlet.http.HttpServlet.service(HttpServlet.java:617)
org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:842)
javax.servlet.http.HttpServlet.service(HttpServlet.java:723)
root cause
org.springframework.web.bind.annotation.support.HandlerMethodInvocationException: Failed to invoke handler method [public org.springframework.web.servlet.ModelAndView com.springapp.mvc.HelloController.printBye(java.util.Map)]; nested exception is java.lang.IllegalStateException: Could not find @PathVariable [pathVars] in @RequestMapping
org.springframework.web.bind.annotation.support.HandlerMethodInvoker.invokeHandlerMethod(HandlerMethodInvoker.java:180)
org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.invokeHandlerMethod(AnnotationMethodHandlerAdapter.java:446)
org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.handle(AnnotationMethodHandlerAdapter.java:434)
org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:943)
org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:877)
org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:966)
org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:857)
javax.servlet.http.HttpServlet.service(HttpServlet.java:617)
org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:842)
javax.servlet.http.HttpServlet.service(HttpServlet.java:723)
root cause
java.lang.IllegalStateException: Could not find @PathVariable [pathVars] in @RequestMapping
org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter$ServletHandlerMethodInvoker.resolvePathVariable(AnnotationMethodHandlerAdapter.java:859)
org.springframework.web.bind.annotation.support.HandlerMethodInvoker.resolvePathVariable(HandlerMethodInvoker.java:710)
org.springframework.web.bind.annotation.support.HandlerMethodInvoker.resolveHandlerArguments(HandlerMethodInvoker.java:359)
org.springframework.web.bind.annotation.support.HandlerMethodInvoker.invokeHandlerMethod(HandlerMethodInvoker.java:170)
org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.invokeHandlerMethod(AnnotationMethodHandlerAdapter.java:446)
org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.handle(AnnotationMethodHandlerAdapter.java:434)
org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:943)
org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:877)
org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:966)
org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:857)
javax.servlet.http.HttpServlet.service(HttpServlet.java:617)
org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:842)
javax.servlet.http.HttpServlet.service(HttpServlet.java:723)
note The full stack trace of the root cause is available in the Apache Tomcat/6.0.43 logs.
您认为'@ PathVariable'的作用是什么? – 2015-01-15 18:39:20
我假设路径变量用于将请求映射到受尊重的Action。我知道我的'pathVars'目前是空的,但即使我为他们制作了一些映射器,我仍然得到相同的错误。 – 2015-01-15 18:41:53
不要假设。阅读[documentation](http://docs.spring.io/spring-framework/docs/current/javadoc-api/org/springframework/web/bind/annotation/PathVariable.html)。 – 2015-01-15 18:42:47