英文:
HTTP 500 - INTERNAL SERVER ERROR. Servlet.init() for servlet spring-dispatcher threw exception
问题
以下是翻译好的部分：
我是一个Spring MVC的初学者，正在跟随一份关于如何使用它的教程。在我的主页面，即"http://localhost:8080/FitnessTracker/"上，我没有任何问题，但是当我尝试访问例如"http://localhost:8080/FitnessTracker/addGoal.html"时，它显示了我在标题中写的内容。
我的web.xml文件如下：
<?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">
<servlet>
<servlet-name>fitTrackerServlet</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>/WEB-INF/config/servlet-config.xml</param-value>
</init-param>
</servlet>
<servlet-mapping>
<servlet-name>fitTrackerServlet</servlet-name>
<url-pattern>*.html</url-pattern>
</servlet-mapping>
<!-- 其他 servlet-mapping 配置省略 -->
<display-name>Archetype Created Web Application</display-name>
</web-app>
我的servlet-config.xml文件如下：
<?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"
xmlns:p="http://www.springframework.org/schema/p"
xsi:schemaLocation="http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd
http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.2.xsd">
<!-- 其他配置省略 -->
<!-- 注解驱动的 MVC -->
<mvc:annotation-driven/>
<!-- 资源处理器配置 -->
<mvc:resources location="assets" mapping="/assets/**"/>
<mvc:resources location="pdfs" mapping="/pdfs/**"/>
<!-- 组件扫描配置 -->
<context:component-scan base-package="com.pluralsight"/>
<!-- 视图解析器和内容协商配置 -->
<!-- 其他配置省略 -->
<!-- 国际化拦截器配置 -->
<!-- 其他配置省略 -->
<!-- 视图解析器配置 -->
<!-- 其他配置省略 -->
</beans>
这是我的addGoal.jsp文件的一部分：
<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
pageEncoding="ISO-8859-1"%>
<%@ taglib prefix="form" uri="http://www.springframework.org/tags/form" %>
<!-- 其他内容省略 -->
<form:form commandName="goal">
<!-- 表单内容省略 -->
</form:form>
这是我的GoalController.java文件的一部分：
package com.pluralsight.controller;
import javax.validation.Valid;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.validation.BindingResult;
import org.springframework.web.bind.annotation.ModelAttribute;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.SessionAttributes;
import com.pluralsight.model.Goal;
@Controller
@SessionAttributes("goal")
public class GoalController {
@RequestMapping(value = "addGoal", method = RequestMethod.GET)
public String addGoal(Model model) {
Goal goal = new Goal();
goal.setMinutes(10);
model.addAttribute("goal", goal);
return "addGoal";
}
@RequestMapping(value = "addGoal", method = RequestMethod.POST)
public String updateGoal(@Valid @ModelAttribute("goal") Goal goal, BindingResult result) {
// 处理表单提交逻辑
// 其他内容省略
}
}
同时，你提到了一个异常，但是并没有提供完整的异常信息。如果你需要关于异常的帮助，请提供完整的异常堆栈信息和其他相关信息。
英文:
I'm a Spring MVC beginner and I'm following a tutorial about how to use it. On my main page which is "http://localhost:8080/FitnessTracker/" I don't have any problems, but when I try to access to, for example, "http://localhost:8080/FitnessTracker/addGoal.html", it says what i wrote on the title.
My web.xml is the next one:
<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">
<servlet>
<servlet-name>fitTrackerServlet</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>/WEB-INF/config/servlet-config.xml</param-value>
</init-param>
</servlet>
<servlet-mapping>
<servlet-name>fitTrackerServlet</servlet-name>
<url-pattern>*.html</url-pattern>
</servlet-mapping>
<servlet-mapping>
<servlet-name>fitTrackerServlet</servlet-name>
<url-pattern>/pdfs/**</url-pattern>
</servlet-mapping>
<servlet-mapping>
<servlet-name>fitTrackerServlet</servlet-name>
<url-pattern>/images/**</url-pattern>
</servlet-mapping>
<servlet-mapping>
<servlet-name>fitTrackerServlet</servlet-name>
<url-pattern>*.json</url-pattern>
</servlet-mapping>
<display-name>Archetype Created Web Application</display-name>
</web-app>
My servlet-config.xml has this:
<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"
xmlns:p="http://www.springframework.org/schema/p"
xsi:schemaLocation="http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd
http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.2.xsd">
<mvc:annotation-driven/>
<mvc:resources location="assets" mapping="/assets/**"/>
<mvc:resources location="pdfs" mapping="/pdfs/**"/>
<context:component-scan base-package="com.pluralsight"/>
<bean class="org.springframework.web.servlet.view.ContentNegotiatingViewResolver">
<property name="order" value="1" />
<property name="contentNegotiationManager">
<bean class="org.springframework.web.accept.ContentNegotiationManager">
<constructor-arg>
<bean class="org.springframework.web.accept.PathExtensionContentNegotiationStrategy">
<constructor-arg>
<map>
<entry key="json" value="application/json" />
<entry key="xml" value="application/xml" />
</map>
</constructor-arg>
</bean>
</constructor-arg>
</bean>
</property>
<property name="defaultViews">
<list>
<bean class="org.springframework.web.servlet.view.json.MappingJacksonJsonView" />
<bean class="org.springframework.web.servlet.view.xml.MarshallingView">
<constructor-arg>
<bean class="org.springframework.oxm.xstream.XStreamMarshaller">
<property name="autodetectAnnotations" value="true" />
</bean>
</constructor-arg>
</bean>
</list>
</property>
</bean>
<mvc:interceptors>
<bean class="org.springframework.web.servlet.i18n.LocaleChangeInterceptor" p:paramName="language"/>
</mvc:interceptors>
<bean id="localeResolver" class="org.springframework.web.servlet.i18n.SessionLocaleResolver" p:defaultLocale="en"/>
<bean id="messageSource"
class="org.springframework.context.support.ResourceBundleMessageSource"
p:basename="messages"></bean>
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"
p:prefix="/WEB-INF/jsp/" p:suffix=".jsp" p:order="2"/>
<bean class="org.springframework.web.servlet.view.BeanNameViewResolver" p:order="0"/>
</beans>
This is my addGoal.jsp file
pageEncoding="ISO-8859-1"%>
<%@ taglib prefix="form" uri="http://www.springframework.org/tags/form" %>
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>
</title>
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<!-- Le styles -->
<link href="assets/css/bootstrap.css" rel="stylesheet">
<style>
body { padding-top: 60px; /* 60px to make the container go all the way
to the bottom of the topbar */ }
</style>
<link href="assets/css/bootstrap-responsive.css" rel="stylesheet">
<!-- Le HTML5 shim, for IE6-8 support of HTML5 elements -->
<!--[if lt IE 9]>
<script src="http://html5shim.googlecode.com/svn/trunk/html5.js">
</script>
<![endif]-->
<!-- Le fav and touch icons -->
<link rel="shortcut icon" href="assets/ico/favicon.ico">
<link rel="apple-touch-icon-precomposed" sizes="144x144" href="assets/ico/apple-touch-icon-144-precomposed.png">
<link rel="apple-touch-icon-precomposed" sizes="114x114" href="assets/ico/apple-touch-icon-114-precomposed.png">
<link rel="apple-touch-icon-precomposed" sizes="72x72" href="assets/ico/apple-touch-icon-72-precomposed.png">
<link rel="apple-touch-icon-precomposed" href="assets/ico/apple-touch-icon-57-precomposed.png">
<style>
.error {
color: #ff0000;
}
.errorblock {
color: #000;
background-color: #ffEEEE;
border: 3px solid #ff0000;
padding: 8px;
margin: 16px;
}
</style>
</head>
<body>
<div class="navbar navbar-fixed-top navbar-inverse">
<div class="navbar-inner">
<div class="container">
<a class="brand" href="#">
Add Goal
</a>
<ul class="nav">
</ul>
</div>
</div>
</div>
<div class="container">
<div>
<h1>
Add Goal
</h1>
<p>
Add your workout goal in minutes for the day.
<br>
&nbsp;
</p>
</div>
<form:form commandName="goal">
<form:errors path="*" cssClass="errorblock" element="div" />
<label for="textinput1">
Enter Minutes:
</label>
<form:input path="minutes" cssErrorClass="error" />
<form:errors path="minutes" cssClass="error" />
<br/>
<input type="submit" class="btn" value="Enter Goal Minutes"/>
</form:form>
<div class="control-group">
</div>
</div>
<script src="jquery-1.8.3.js">
</script>
<script src="assets/js/bootstrap.js">
</script>
</body>
</html>
My GoalController.java
import javax.validation.Valid;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.validation.BindingResult;
import org.springframework.web.bind.annotation.ModelAttribute;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.SessionAttributes;
import com.pluralsight.model.Goal;
@Controller
@SessionAttributes("goal")
public class GoalController {
@RequestMapping(value = "addGoal", method = RequestMethod.GET)
public String addGoal(Model model) {
Goal goal = new Goal();
goal.setMinutes(10);
model.addAttribute("goal", goal);
return "addGoal";
}
@RequestMapping(value = "addGoal", method = RequestMethod.POST)
public String updateGoal(@Valid @ModelAttribute("goal") Goal goal, BindingResult result) {
System.out.println("result has errors: " + result.hasErrors());
System.out.println("Goal set: " + goal.getMinutes());
if(result.hasErrors()) {
return "addGoal";
}
return "redirect:index.jsp";
}
}
And I'm having this exception
org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:492)
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:104)
org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:1025)
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:452)
org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1201)
org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:654)
org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2532)
org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2521)
java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
java.base/java.lang.Thread.run(Thread.java:830)
What can I do to make this work? Thank you so much.
答案1
得分: -1
在web.xml中添加以下内容：
<!-- 配置Spring MVC Dispatcher Servlet的URL映射 -->
<servlet-mapping>
<servlet-name>dispatcher</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
在web.xml中，为什么要对单个servlet进行多次映射呢？
我的建议是，请移除所有这些servlet映射，然后只包含我上面告诉你的配置。
根据您的控制器代码，尝试访问 localhost:8080/FitnessTracker/addGoal。
英文:
Add this in web.xml
<!-- Set up URL mapping for Spring MVC Dispatcher Servlet -->
<servlet-mapping>
<servlet-name>dispatcher</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
In web.xml why are you having more than one servlet mapping of single servlet
My suggestion would be please remove all these servlet mapping and then just include which I have told you above
Try to access localhost:8080/FitnessTracker/addGoal as per your controller code
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