Java RequestMappingHandlerMapping.getHandlerInternal:230 - 没有找到处理程序方法
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RequestMappingHandlerMapping.getHandlerInternal:230 - Did not find handler method for
提问by DENMROOT
trying to make some spring example program - constantly getting the error - it happens that my controller cannot handle /hello request. Here is debug info from log4j.
试图制作一些 spring 示例程序 - 不断收到错误 - 碰巧我的控制器无法处理 /hello 请求。这是来自 log4j 的调试信息。
13:50:58,502 {TRACE} DispatcherServlet.initContextHolders:1018 - Bound request context to thread: org.apache.catalina.connector.RequestFacade@636f2067
13:50:58,503 {DEBUG} DispatcherServlet.doService:823 - DispatcherServlet with name 'springtest' processing GET request for [/springtest_2/hello]
13:50:58,504 {TRACE} DispatcherServlet.getHandler:1088 - Testing handler map
[org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping@7bab2c3] in DispatcherServlet with name 'springtest'
13:50:58,504 {DEBUG} RequestMappingHandlerMapping.getHandlerInternal:220 - Looking
up handler method for path /hello
13:50:58,504 {DEBUG} RequestMappingHandlerMapping.getHandlerInternal:230 - Did not find handler method for [/hello]
13:50:58,504 {TRACE} DispatcherServlet.getHandler:1088 - Testing handler map [org.springframework.web.servlet.handler.BeanNameUrlHandlerMapping@722e242b] in DispatcherServlet with name 'springtest'
13:50:58,505 {TRACE} BeanNameUrlHandlerMapping.getHandlerInternal:127 - No handler mapping found for [/hello]
13:50:58,505 {WARN} PageNotFound.noHandlerFound:1108 - No mapping found for HTTP request with URI [/springtest_2/hello] in DispatcherServlet with name 'springtest'
13:50:58,505 {TRACE} DispatcherServlet.resetContextHolders:1028 - Cleared thread-bound request context: org.apache.catalina.connector.RequestFacade@636f2067
13:50:58,505 {DEBUG} DispatcherServlet.processRequest:966 - Successfully completed request
13:50:58,506 {TRACE} XmlWebApplicationContext.publishEvent:332 - Publishing event in WebApplicationContext for namespace 'springtest-servlet': ServletRequestHandledEvent: url=[/springtest_2/hello]; client=[0:0:0:0:0:0:0:1]; method=[GET]; servlet=[springtest]; session=[null]; user=[null]; time=[9ms]; status=[OK]
web.xml from my project.
我的项目中的 web.xml。
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns="http://java.sun.com/xml/ns/javaee"
xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"
id="WebApp_ID" version="3.0">
<display-name>Spring3-Hibernate DEMO</display-name>
<listener>
<listener-class>org.springframework.web.util.Log4jConfigListener</listener-class>
</listener>
<context-param>
<param-name>log4jConfigLocation</param-name>
<param-value>/WEB-INF/log4j.properties</param-value>
</context-param>
<!-- The front controller of this Spring Web application, responsible for handling all application requests -->
<servlet>
<servlet-name>springtest</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>/WEB-INF/springtest-servlet.xml</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<!-- Map all requests to the DispatcherServlet for handling -->
<servlet-mapping>
<servlet-name>springtest</servlet-name>
<url-pattern>/*</url-pattern>
</servlet-mapping>
</web-app>
spring-test-servlet.xml - dispatcher file from my project
spring-test-servlet.xml - 我的项目中的调度程序文件
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.0.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-3.0.xsd" >
<mvc:annotation-driven />
<context:component-scan base-package="com.denmroot.controller"/>
<bean id="viewResolver"
class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="viewClass" value="org.springframework.web.servlet.view.JstlView"/>
<property name="prefix" value="/WEB-INF/jsp/" />
<property name="suffix" value=".jsp" />
</bean>
ControllerMain.java - from my project
ControllerMain.java - 来自我的项目
package com.denmroot.controller;
import org.springframework.stereotype.Controller;
import org.springframework.ui.ModelMap;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
@Controller
public class ControllerMain {
@RequestMapping(value = "/hello", method = RequestMethod.GET)
public String helloworld (ModelMap model) {
model.addAttribute("message", "Hello World !!! Spring Output");
return "hello";
}
}
回答by Artem Bilan
Actually the log says everything:
实际上日志说明了一切：
Or change your url from client to just
/hellopathOr map your
@Controllerwith:@Controller @RequestMapping("/springtest_2") public class ControllerMain {
或者将您的网址从客户端更改为
/hello路径或映射您
@Controller的：@Controller @RequestMapping("/springtest_2") public class ControllerMain {
回答by Kris
@Controller
@控制器
annotation is missing for your controller class.
您的控制器类缺少注释。
回答by Apple Pirate
For me, I had a typo in the Spring config file which points to the package:
对我来说，我在指向包的 Spring 配置文件中有一个错字：
Was:
曾是：
<context:component-scan base-package="com.something.web.controlers" />
Fixed with correct spelling:
用正确的拼写修复：
<context:component-scan base-package="com.something.web.controllers" />
回答by Murtaza Chiba
ControllerMain.java requires a @RequestMapping("/") statement after the @Controller.
ControllerMain.java 在@Controller 之后需要一个@RequestMapping("/") 语句。
Change:
改变：
@Controller
public class ControllerMain {
@RequestMapping(value = "/hello", method = RequestMethod.GET)
....
....
To:
到：
@Controller
@RequestMapping("/")
public class ControllerMain {
@RequestMapping(value = "/hello", method = RequestMethod.GET)
....
....
....
