Question

我从Spring的网站上获取了以下示例，试图了解基本概念，但到目前为止我只是在配置方面苦苦挣扎。

所以这是web.xml：

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5" xmlns="http://java.sun.com/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee     http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">

<!-- Processes application requests -->
<servlet>
    <servlet-name>appServlet</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    <init-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>/WEB-INF/spring/appServlet/servlet-context.xml</param-value>
    </init-param>
    <load-on-startup>1</load-on-startup>
</servlet>

<servlet-mapping>
    <servlet-name>appServlet</servlet-name>
    <url-pattern>/</url-pattern>
</servlet-mapping>

servlet的context.xml中

<?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:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="
    http://www.springframework.org/schema/mvc    http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd
    http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
    http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd">

<!-- DispatcherServlet Context: defines this servlet's request-processing infrastructure -->

<!-- Scans within the base package of the application for @Components to configure as beans -->
<!-- @Controller, @Service, @Configuration, etc. -->
<context:component-scan base-package="xyz.sample.baremvc" />

<!-- Enables the Spring MVC @Controller programming model -->
<mvc:annotation-driven />

</beans>

然后是HomeController.java

package xyz.sample.baremvc;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;

/**
 * Handles requests for the application home page.
 */
@Controller
public class HomeController {

    @RequestMapping(value = "/")
    public String home() {
        System.out.println("HomeController: Passing through...");
        return "WEB-INF/views/home.jsp";
    }
}

最后是home.jsp

<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
pageEncoding="ISO-8859-1"%>
<%@ page session="false" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Insert title here</title>
</head>
    <body>
        <p>Hello World!
    </body>
</html>

为了完整性，这是文件夹结构

enter image description here

所以我运行这个项目，收到以下消息：

Nov 29, 2013 11:14:33 PM org.springframework.web.servlet.DispatcherServlet noHandlerFound
WARNING: No mapping found for HTTP request with URI [/Springer2/] in DispatcherServlet with name 'appServlet'

我尝试使用路径名称和诸如此类似的东西，但似乎没有任何效果。我无法理解为什么在直接从马口中取出这么简单的代码后会遇到这么多麻烦。

Answer 1

由于您将所有类放在资源目录中，因此无法编译它们。将所有包移至 src / main / java 。

Answer 2

spring ide的示例代码，不起作用。当我使用时，我不得不做一些改变，比如一个版本，以使其工作。所以在3.1.1我使用这个结构：

https://bitbucket.org/bcfurtado/spring-mvc-template

也许有帮助。

Answer 3

您尝试过哪些网址？我认为web.xml映射中的网址格式应该是/*而不是/。

无法运行'Hello World'Spring MVC代码

3 个答案: