java HTTP 状态 404 - Servlet 调度程序不可用
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/4510569/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
HTTP Status 404 - Servlet dispatcher is not available
提问by theJava
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.mycompany.app</groupId>
<artifactId>WicketSpringHibernate</artifactId>
<version>1.0</version>
<packaging>war</packaging>
<name>WicketSpringHibernate</name>
<url>http://maven.apache.org</url>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
</properties>
<repositories>
<repository>
<id>JBoss repository</id>
<url>http://repository.jboss.com/maven2/</url>
</repository>
</repositories>
<dependencies>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring</artifactId>
<version>2.5.5</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>2.5.5</version>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jsp-api</artifactId>
<version>2.0</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jstl</artifactId>
<version>1.1.2</version>
</dependency>
<dependency>
<groupId>taglibs</groupId>
<artifactId>standard</artifactId>
<version>1.1.2</version>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>servlet-api</artifactId>
<version>2.5</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<version>2.5.5</version>
</dependency>
<dependency>
<groupId>commons-dbcp</groupId>
<artifactId>commons-dbcp</artifactId>
<version>1.2.2</version>
</dependency>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate</artifactId>
<version>3.2.6.ga</version>
<exclusions>
<exclusion>
<groupId>javax.transaction</groupId>
<artifactId>jta</artifactId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>geronimo-spec</groupId>
<artifactId>geronimo-spec-jta</artifactId>
<version>1.0-M1</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>3.8.1</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>javax.persistence</groupId>
<artifactId>persistence-api</artifactId>
<version>1.0</version>
</dependency>
<!-- MySQL database driver -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.9</version>
</dependency>
<!-- Hibernate framework -->
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-core</artifactId>
<version>3.3.0.GA</version>
</dependency>
<dependency>
<groupId>javassist</groupId>
<artifactId>javassist</artifactId>
<version>3.8.0.GA</version>
</dependency>
<!-- Hibernate annotation -->
<dependency>
<groupId>hibernate-annotations</groupId>
<artifactId>hibernate-annotations</artifactId>
<version>3.3.0.GA</version>
</dependency>
<dependency>
<groupId>hibernate-commons-annotations</groupId>
<artifactId>hibernate-commons-annotations</artifactId>
<version>3.0.0.GA</version>
</dependency>
<!-- Hibernate library dependecy start -->
<dependency>
<groupId>dom4j</groupId>
<artifactId>dom4j</artifactId>
<version>1.6.1</version>
</dependency>
<dependency>
<groupId>commons-logging</groupId>
<artifactId>commons-logging</artifactId>
<version>1.1.1</version>
</dependency>
<dependency>
<groupId>commons-collections</groupId>
<artifactId>commons-collections</artifactId>
<version>3.2.1</version>
</dependency>
<dependency>
<groupId>antlr</groupId>
<artifactId>antlr</artifactId>
<version>2.7.7</version>
</dependency>
<!-- Hibernate library dependecy end -->
</dependencies>
</project>
The above is my POM.xml. My Apache logs says...
以上是我的POM.xml。我的 Apache 日志说...
java.lang.ClassNotFoundException: org.springframework.web.servlet.DispatcherServlet
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1438)
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1284)
at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1068)
at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:966)
at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:3996)
at org.apache.catalina.core.StandardContext.start(StandardContext.java:4266)
at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:760)
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:740)
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:544)
at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:980)
at org.apache.catalina.startup.HostConfig.deployDirectories(HostConfig.java:943)
at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:500)
at org.apache.catalina.startup.HostConfig.check(HostConfig.java:1271)
at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:301)
at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:120)
at org.apache.catalina.core.ContainerBase.backgroundProcess(ContainerBase.java:1306)
at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren(ContainerBase.java:1570)
at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren(ContainerBase.java:1579)
at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.run(ContainerBase.java:1559)
at java.lang.Thread.run(Unknown Source)
Dec 22, 2010 8:26:01 PM org.apache.catalina.core.StandardWrapperValve invoke
INFO: Servlet dispatcher is currently unavailable
回答by Stephen C
The answer is in this line:
答案就在这一行：
java.lang.ClassNotFoundException: org.springframework.web.servlet.DispatcherServlet
java.lang.ClassNotFoundException: org.springframework.web.servlet.DispatcherServlet
Basically your web app is missing JAR files for Spring Core and/or Spring MVC. They should be in the webapp's /WEB-INF/libdirectory, along with other JAR files that your webapp depends on. Take a look at what is there, and try to figure out why DispatcherServletis missing.
基本上，您的 Web 应用程序缺少 Spring Core 和/或 Spring MVC 的 JAR 文件。它们应该在 webapp 的/WEB-INF/lib目录中，以及你的 webapp 依赖的其他 JAR 文件。看看那里有什么，并尝试找出DispatcherServlet丢失的原因。
回答by fmucar
If you are using IDE and trying to run it from within the ide, you will need to explicilitly tell ide to export maven dependencies into web-inf/lib
如果您正在使用 IDE 并尝试从 ide 中运行它，则需要明确告诉 ide 将 maven 依赖项导出到 web-inf/lib
if you are using eclipse; Project Properties Deployment Assembly Add -> Maven dependencies and tell eclipse to export those into web-inf/lib
如果您使用的是日食；项目属性部署程序集添加 -> Maven 依赖项并告诉 eclipse 将这些导出到 web-inf/lib
回答by Chris Thompson
I'm not familiar with using Maven for a spring app, but just at a glance it looks like you're pulling down the testing architecture rather than the actual spring binaries. This is also consistent with the error you're getting: it can't find the DispatcherServlet class. I'd double check to make sure you have the correct spring dependency listed in your POM.xml
我不熟悉将 Maven 用于 spring 应用程序，但乍一看，您似乎正在拉低测试架构，而不是实际的 spring 二进制文件。这也与您得到的错误一致：它找不到 DispatcherServlet 类。我会仔细检查以确保您的 POM.xml 中列出了正确的 spring 依赖项
