org.springframework.web.servlet.PageNotFound noHandlerFound; 警告:在DispatcherServlet中找不到带URI的HTTP请求的映射

Question

我经历了很多论坛和博客以获得答案,但无法得到任何有用的提示或建议.所以,如果有人可以在下面的问题上提供帮助,那将是一个很大的帮助.

尝试连接时,我收到以下警告和错误http://localhost:8080/SpringApp/hello:

INFO: Server startup in 6935 ms
Jul 19, 2014 11:15:42 AM org.springframework.web.servlet.PageNotFound noHandlerFound
WARNING: No mapping found for HTTP request with URI [/SpringApp/] in DispatcherServlet with name 'HelloWeb'
Jul 19, 2014 11:16:29 AM com.example.java.HelloController printHelloWorld
INFO: HelloController : printHelloWorld : ENTER
Jul 19, 2014 11:16:29 AM com.example.java.HelloController printHelloWorld
INFO: HelloController : printHelloWorld : EXIT
Jul 19, 2014 11:16:29 AM org.springframework.web.servlet.PageNotFound noHandlerFound
WARNING: No mapping found for HTTP request with URI [/SpringApp/WEB-INF/jsp/hello.jsp] in DispatcherServlet with name 'HelloWeb'

因此我在Tomcat中收到HTTP Status 404错误.

整个数据如下:

web.xml文件是:

<display-name>Spring MVC Application</display-name>
<welcome-file-list>
    <welcome-file>index.jsp</welcome-file>
</welcome-file-list>

<servlet>
    <servlet-name>HelloWeb</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    <init-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>/WEB-INF/HelloWeb-servlet.xml</param-value>
    </init-param>
    <load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
    <servlet-name>HelloWeb</servlet-name>
    <url-pattern>/*</url-pattern>
</servlet-mapping>

HelloWeb-Servlet.xml文件是:

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:mvc="http://www.springframework.org/schema/mvc" 
xmlns:p="http://www.springframework.org/schema/p"
xmlns:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.2.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.2.xsd 
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd">
<context:component-scan base-package="com.example.java"></context:component-scan>
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
    <property name="prefix" value="/WEB-INF/jsp/"></property>
    <property name="suffix" value=".jsp"></property>
</bean>
<context:annotation-config/>
<mvc:annotation-driven/>
<bean class="org.springframework.web.servlet.mvc.annotation.DefaultAnnotationHandlerMapping"></bean>
<bean class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter"></bean>
</beans>

HelloController.java文件是:

package com.example.java;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
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
@RequestMapping("/hello")
public class HelloController {

    protected final Log logger = LogFactory.getLog(getClass());

    @RequestMapping(method=RequestMethod.GET)
    public String printHelloWorld(ModelMap model){
        logger.info("HelloController : printHelloWorld : ENTER");
        model.addAttribute("message", "Hello Sumit");
        logger.info("HelloController : printHelloWorld : EXIT");
        return "hello";
    }
}

Answer 1

首先,文件名应该是HelloWeb-servlet.xml(servlet的'小写).如果你还有一些问题,请尝试添加

<mvc:default-servlet-handler/>

在HelloWeb-servlet.xml中

Answer 2

在这里查看我的答案= https://www.youtube.com/watch?v=-AtPAeSWz-o

以下内容对我有用。正如您从上面的 YouTube 视频中看到的，我已经测试过它并且它有效。

目录结构：

确保您的目录结构与此匹配。

网络.xml：

需要注意的一些事情：这<url-pattern>应该是<url-pattern>/<url-pattern>因为当应用程序首次启动时，它会尝试连接到 localhost:8080/YourAppName/ 而不是 localhost:8080/YourAppName/homePage。

你好控制器.java：

HelloWeb-servlet.xml