Question

又一次

HTTP状态500 - 实例化servlet类org.springframework.web.servlet.DispatcherServlet时出错

请你们（那些了解它的人）写一个指南来帮助我们调试这个？它甚至意味着什么？是什么原因导致它无法实例化该类？

无论如何我头疼。我只有一个控制器和一个带有/ url模式的默认调度程序servlet。仍然它失败了与HTTP 500 ...我甚至想知道它在所有servlet进入component-scan base package。下面是我的项目架构和一些代码：

的pom.xml

<!-- BASIC DEPENDENCIES -->
  <dependencies>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-webmvc</artifactId>
        <version>4.3.9.RELEASE</version>
    </dependency>
     <dependency>
        <groupId>javax.servlet</groupId>
        <artifactId>jstl</artifactId>
        <version>1.2</version>
     </dependency>

     <dependency>
        <groupId>javax.servlet</groupId>
        <artifactId>javax.servlet-api</artifactId>
        <version>3.1.0</version>
        <scope>provided</scope>
     </dependency>

  </dependencies>

  <!-- CURRENT JDK -->

  <properties>    
    <maven.compiler.source>1.8</maven.compiler.source>
    <maven.compiler.target>1.8</maven.compiler.target>
  </properties>

的web.xml

<web-app version="3.0" 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_3_0.xsd">

    <servlet>
        <servlet-name>DefaultServlet</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <init-param>
                <param-name>contextConfigLocation</param-name>
                <param-value>/WEB-INF/spring/webcontext/DefaultServlet-context.xml</param-value>
        </init-param>
    </servlet>

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

</web-app>

defaultServlet-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:context="http://www.springframework.org/schema/context"
    xmlns:mvc="http://www.springframework.org/schema/mvc"
    xsi:schemaLocation="http://www.springframework.org/schema/beans
    http://www.springframework.org/schema/beans/spring-beans-4.0.xsd
    http://www.springframework.org/schema/context 
    http://www.springframework.org/schema/context/spring-context-4.0.xsd
    http://www.springframework.org/schema/mvc 
    http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd">

    <mvc:annotation-driven /> 

    <context:component-scan base-package="com.parochia.controllers" /> 

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

    <mvc:resources mapping="/resources/**" location="/ressources/theme1/" /> 
</beans>

控制器

@Controller
public class liturgieController {

    @RequestMapping("/")
    public String liturgie(Model model){
        return "liturgie";
    }
}

** PS：**请各位朋友，这里有太多错误。我们甚至无法扫描其他响应并将其应用到我们的cas中，因为它每次发生时似乎都不同。在进入stackoverflow之前我们应该如何调试它。它甚至意味着什么......

......我很沮丧:(

Answer 1

在web.xml中的servlet定义中，用

替换<sevlet-mapping>/<sevlet-mapping>

<sevlet-mapping>/*<sevlet-mapping>

并发送其他异常以查看。

HTTP状态500 - 无法实例化DispatcherServlet

1 个答案: