Question

我是关于Spring的新手，我正在尝试创建一个简单的项目，但我无法理解它！

我有最新的Java JDK 7。

Apache Tomcat 7最新。

Spring 3框架/ Eclipse JUNO 4集成。

HERE 这是我的项目结构（抱歉外部链接bur我没有10个声望点）

我的web.xml文件：

<?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>
</web-app>

我的servlet-context.xml

<?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="controller" />

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

    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/WEB-INF/views/" />
        <property name="suffix" value=".jsp" />
    </bean>

</beans>

我的HomeController.java文件：

package controller;

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 = "/home")
    public String home() {
        System.out.println("HomeController: Passing through...");
        return "home";
    }
}

我的问题是，当我从浏览器调用servlet时（例如以这种方式）：

http://localhost:8080/SpringMVC/home

我遇到HTTP 400错误 - 说明请求的资源不可用。

我怀疑是一个库问题，但我将所有Spring库（以及更多）放在WEB-INF / lib中。在Eclipse项目中，显然我在类路径中添加了所有内容。

我粘贴了Tomcat的localhost日志：

*

apr 13, 2013 3:44:43 PM org.apache.catalina.core.ApplicationContext log
INFO: SessionListener: contextDestroyed()
apr 13, 2013 3:44:43 PM org.apache.catalina.core.ApplicationContext log
INFO: ContextListener: contextDestroyed()
apr 13, 2013 3:44:47 PM org.apache.catalina.core.ApplicationContext log
INFO: ContextListener: contextInitialized()
apr 13, 2013 3:44:47 PM org.apache.catalina.core.ApplicationContext log
INFO: SessionListener: contextInitialized()
apr 13, 2013 3:44:47 PM org.apache.catalina.core.ApplicationContext log
INFO: ContextListener: attributeAdded('org.apache.jasper.compiler.TldLocationsCache', 'org.apache.jasper.compiler.TldLocationsCache@189b904')

*

和Tomcat strERR日志：

*

2013-04-13 15:44:46 Commons Daemon procrun stderr initialized
apr 13, 2013 3:44:47 PM org.apache.catalina.core.AprLifecycleListener init
INFO: The APR based Apache Tomcat Native library which allows optimal performance in production environments was not found on the java.library.path: C:\Program Files\Apache Software Foundation\Tomcat 7.0\bin;C:\Windows\Sun\Java\bin;C:\Windows\system32;C:\Windows;C:\Program Files\AMD APP\bin\x86;C:\Program Files\Common Files\Microsoft Shared\Windows Live;C:\Program Files\NVIDIA Corporation\PhysX\Common;C:\oraclexe\app\oracle\product\10.2.0\server\bin;C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Windows\System32\WindowsPowerShell\v1.0\;C:\Program Files\ATI Technologies\ATI.ACE\Core-Static;C:\Program Files\Windows Live\Shared;C:\Program Files\Autodesk\Backburner\;C:\Program Files\QuickTime\QTSystem\;C:\Program Files\Microsoft\Web Platform Installer\;C:\Program Files\Microsoft ASP.NET\ASP.NET Web Pages\v1.0\;C:\Program Files\Windows Kits\8.0\Windows Performance Toolkit\;C:\Program Files\Microsoft SQL Server\110\Tools\Binn\;;.
apr 13, 2013 3:44:47 PM org.apache.coyote.AbstractProtocol init
INFO: Initializing ProtocolHandler ["http-bio-8080"]
apr 13, 2013 3:44:47 PM org.apache.coyote.AbstractProtocol init
INFO: Initializing ProtocolHandler ["ajp-bio-8009"]
apr 13, 2013 3:44:47 PM org.apache.catalina.startup.Catalina load
INFO: Initialization processed in 397 ms
apr 13, 2013 3:44:47 PM org.apache.catalina.core.StandardService startInternal
INFO: Starting service Catalina
apr 13, 2013 3:44:47 PM org.apache.catalina.core.StandardEngine startInternal
INFO: Starting Servlet Engine: Apache Tomcat/7.0.39
apr 13, 2013 3:44:47 PM org.apache.catalina.startup.HostConfig deployDirectory
INFO: Deploying web application directory C:\Program Files\Apache Software Foundation\Tomcat 7.0\webapps\.metadata
apr 13, 2013 3:44:47 PM org.apache.catalina.startup.HostConfig deployDirectory
INFO: Deploying web application directory C:\Program Files\Apache Software Foundation\Tomcat 7.0\webapps\docs
apr 13, 2013 3:44:47 PM org.apache.catalina.startup.HostConfig deployDirectory
INFO: Deploying web application directory C:\Program Files\Apache Software Foundation\Tomcat 7.0\webapps\examples
apr 13, 2013 3:44:47 PM org.apache.catalina.startup.HostConfig deployDirectory
INFO: Deploying web application directory C:\Program Files\Apache Software Foundation\Tomcat 7.0\webapps\host-manager
apr 13, 2013 3:44:47 PM org.apache.catalina.startup.HostConfig deployDirectory
INFO: Deploying web application directory C:\Program Files\Apache Software Foundation\Tomcat 7.0\webapps\manager
apr 13, 2013 3:44:47 PM org.apache.catalina.startup.HostConfig deployDirectory
INFO: Deploying web application directory C:\Program Files\Apache Software Foundation\Tomcat 7.0\webapps\ROOT
apr 13, 2013 3:44:47 PM org.apache.catalina.startup.HostConfig deployDirectory
INFO: Deploying web application directory C:\Program Files\Apache Software Foundation\Tomcat 7.0\webapps\Servers
apr 13, 2013 3:44:47 PM org.apache.catalina.startup.HostConfig deployDirectory
INFO: Deploying web application directory C:\Program Files\Apache Software Foundation\Tomcat 7.0\webapps\SpringMVC
apr 13, 2013 3:44:47 PM org.apache.coyote.AbstractProtocol start
INFO: Starting ProtocolHandler ["http-bio-8080"]
apr 13, 2013 3:44:47 PM org.apache.coyote.AbstractProtocol start
INFO: Starting ProtocolHandler ["ajp-bio-8009"]
apr 13, 2013 3:44:47 PM org.apache.catalina.startup.Catalina start
INFO: Server startup in 540 ms

*

我已经用尽了，我从昨天开始与这个项目抗争，请帮助我！：）

Answer 1

<servlet>
        <servlet-name>appServlet</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <load-on-startup>1</load-on-startup>
    </servlet>
    <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>WEB-INF/spring/appServlet/servlet-context.xml</param-value>
    </context-param>
    <servlet-mapping>
        <servlet-name>appServlet</servlet-name>
        <url-pattern>/</url-pattern>
    </servlet-mapping>
    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>

Answer 2

这可能是由于缺少所需的库而引起的。以下是spring列出的库模板项目列表（库版本可能不同）。

default library list in SpringMVC template project

向前推进时，您可能会遇到复制库很痛苦，必须有更好的方法来实现这一点。

我准备了blog post，如何在eclipse的spring tooluit插件的帮助下轻松设置springMVC项目。希望它对你来说是一个非常有用的参考。

Answer 3

“C：\ Program Files \ Apache Software Foundation \ Tomcat 7.0 \ webapps \ SpringMVC”目录中的实际内容是什么？它有webapp目录结构吗？

根据stdErr日志，Tomcat似乎没有检测到你的appServlet（org.springframework.web.servlet.DispatcherServlet）。

如果正确部署SpringMVC应用程序，则应在日志文件中看到以下消息：

INFO : org.springframework.web.servlet.DispatcherServlet - FrameworkServlet 'appServlet': initialization started
...
...
INFO : org.springframework.web.servlet.DispatcherServlet - FrameworkServlet 'appServlet': initialization completed in 725 ms

Answer 4

10次中有9次，当我看到Spring MVC出现404错误时，通常是因为我操作了控制器返回的视图名称/路径。

Answer 5

根据您的代码结构，一切看起来都很完美。
如果我是你，我会检查System.out.println（）值以查看控制器是否真的被调用，然后我将确保home.jsp的位置是正确的。

Answer 6

尝试将控制器方法的请求映射更改为：

@Controller
public class HomeController {

    @RequestMapping(value = "home")
    public String home() {
        System.out.println("HomeController: Passing through...");
        return "home";
    }
}

从/删除/home。

此外，您的web.xml似乎没有上下文侦听器。

<context-param>
    <param-name>contextConfigLocation</param-name><param-value>     
        /WEB-INF/spring/appServlet/spring-security.xml,
        /WEB-INF/spring/appServlet/hibernate-config.xml         
    </param-value>
</context-param>

<!-- you seem to be missing this -->
<listener>
    <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>

<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>

Spring MVC Simple Project - 404

6 个答案: