HTTP状态500 - Servlet.init（）为servlet Dispatcher抛出异常 [英] HTTP Status 500 - Servlet.init() for servlet Dispatcher threw exception
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问题描述
< html>
< head>
< title>输入新的页面< / title>
< / head>
< body>
< div id =editPresPage>
< form action =editPresPage.domethod =post>
< label>输入页面ID< / label>< input type =textname =page_id/>
< label>输入Header1< / label>< input type =textname =h1/>
< label>输入Header2< / label>< input type =textname =h2/>
< label>输入Header3< / label>< input type =textname =h3/>
< label>输入Header4< / label>< input type =textname =h4/>
< label>输入页面文本< / label>< input type =textname =page_text/>
< input type =submitvalue =添加新页面/>
< / form>
< / div>
< / body>
< / html>
我收到错误HTTP Status 500 - Servlet.init（）为servlet Dispatcher抛出异常我的浏览器。
在我的命令行窗口（当我运行tomcat的start.batch文件时打开）
我得到以下错误：
log4j：WARN没有找到记录器的追加者（org.springframework.web.servlet.dispatcherservlet）
我的Dispatcher-servlet.xml文件：
< beans xmlns =http://www.springframework.org/ schema / beans
xmlns：xsi =http://www.w3.org/2001/XMLSchema-instance
xmlns：p =http://www.springframework.org/schema/ p
xmlns：context =http://www.springframework.org/schema/context
xsi：schemaLocation =
http://www.springframework.org/schema/ beans
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/context
http：/ / W ww.springframework.org/schema/context/spring-context-3.0.xsd\">
< import resource =/ application.xml/>
< bean name =/ editPresPage.do
class =my.pack.webTier.control.EditPresPageController>
< property name =page_manager_serviceref =page_manager_service/>
< / bean>
<！ - 我也尝试使用注释 - >
<！ - < context：component-scan base-package =my.pack/> - >
< / beans>
这是我的web.xml文件：
<？xml version =1.0encoding =UTF-8？>
< web-app 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
version =2.5>
< servlet>
< servlet-name> Dispatcher< / servlet-name>
< servlet-class> org.springframework.web.servlet.DispatcherServlet< / servlet-class>
< load-on-startup> 1< / load-on-startup>
< / servlet>
< servlet-mapping>
< servlet-name> Dispatcher< / servlet-name>
< url-pattern> *。do< / url-pattern>
< / servlet-mapping>
<！ - Tomcat配置 - >
< Context path =/ myWebAppdocBase =../ tomcat\work\Catalina\localhost\mywebapptomcat\work\Catalina\localhost\mywebapp>
< Loader
loaderClass =org.springframework.instrument.classloading.tomcat.TomcatInstrumentableClassLoader/>
< / Context>
< / web-app>
这是我的控制器：
package my.pack.webTier.control;
import my.pack.dataAccessTier.domain.Presentation_page;
import my.pack.serviceTier.services.Page_manager_service;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.servlet.ModelAndView;
// @ Controller
public class EditPresPageController {
// @ Autowired
private Page_manager_service page_manager_service;
public void setPage_manager_service（Page_manager_service page_manager_service）{
this.page_manager_service = page_manager_service;
}
@RequestMapping（/ editPresPage）
public ModelAndView EditPresPage（@RequestParam（page_id）int page_id，
@RequestParam（h1） String h1_value，
@RequestParam（h2）String h2_value，
@RequestParam（h3）String h3_value，
@RequestParam（h4）String h4_value，
@ RequestParam（page_text）String page_text
{
Presentation_page new_page = new Presentation_page（page_id，h1_value，h2_value，
h3_value，h4_value，page_text）;
page_manager_service.create_new_page（new_page）;
返回新的ModelAndView（/ thanks.html）;
}
}
这是栈跟踪：
异常
javax.servlet.ServletException ：Servlet.init（）for servlet Dispatcher抛出异常
org.apache.catalina.authenticator.AuthenticatorBase.invoke（AuthenticatorBase.java:472）
org.apache.catalina.valves.ErrorReportValve.invoke（ErrorReportValve .java：99）
org.apache.catalina.valves.AccessLogValve.invoke（AccessLogValve.java:929）
org.apache.catalina.connector.CoyoteAdapter.service（CoyoteAdapter.java:407）
org.apache.coyote.http11.AbstractHttp11Processor.process（AbstractHttp11Processor.java:1002）
org.apache.coyote.AbstractProtocol $ AbstractConnectionHandler.process（AbstractProtocol.java:585）
org.apache .tomcat.util.net.JIoEndpoint $ SocketProcessor.run（JIoEndpoint.java:312）
java.util.concurrent.ThreadPoolExecutor.runWorker（ThreadPoolExecutor.java:1110）
java.util.concurrent.Th readPoolExecutor $ Worker.run（ThreadPoolExecutor.java:603）
java.lang.Thread.run（Thread.java:722）
我正在使用spring MVC 3.2，eclipse 3.7，springTomcat / 7.0.30，并在我的项目中使用ANT。
ve搜索了这个要求的答案 - 并没有找到一个。
解决方案
你将调度器映射到* .do：
< servlet-mapping>
< servlet-name> Dispatcher< / servlet-name>
< url-pattern> *。do< / url-pattern>
< / servlet-mapping>
但是你的控制器被映射到没有.do的url：
@RequestMapping（/ editPresPage）
尝试将其更改为：
@RequestMapping（/ editPresPage.do）
When i'm trying to run this simple html form:
<html>
<head>
<title>Enter a new Page</title>
</head>
<body>
<div id="editPresPage">
<form action="editPresPage.do" method="post">
<label>Enter Page ID</label><input type="text" name="page_id"/>
<label>Enter Header1</label><input type="text" name="h1"/>
<label>Enter Header2</label><input type="text" name="h2"/>
<label>Enter Header3</label><input type="text" name="h3"/>
<label>Enter Header4</label><input type="text" name="h4"/>
<label>Enter Page Text</label><input type="text" name="page_text"/>
<input type="submit" value="Add New Page"/>
</form>
</div>
</body>
</html>
I'm getting the error HTTP Status 500 - Servlet.init() for servlet Dispatcher threw exception in my browser.
In my command line window (which opens when i'm running the tomcat's start.batch file) i'm getting the following error:
log4j:WARN No appenders could be found for logger(org.springframework.web.servlet.dispatcherservlet)
That my Dispatcher-servlet.xml file:
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:p="http://www.springframework.org/schema/p"
xmlns:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="
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">
<import resource="/application.xml"/>
<bean name="/editPresPage.do"
class="my.pack.webTier.control.EditPresPageController" >
<property name="page_manager_service" ref="page_manager_service"/>
</bean>
<!-- I also tried using with annotations -->
<!-- <context:component-scan base-package="my.pack"/> -->
</beans>
That's my web.xml file:
<?xml version="1.0" encoding="UTF-8"?>
<web-app 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"
version="2.5">
<servlet>
<servlet-name>Dispatcher</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>Dispatcher</servlet-name>
<url-pattern>*.do</url-pattern>
</servlet-mapping>
<!-- Tomcat configuration -->
<Context path="/myWebApp" docBase="../tomcat\work\Catalina\localhost\mywebapptomcat\work\Catalina\localhost\mywebapp">
<Loader
loaderClass="org.springframework.instrument.classloading.tomcat.TomcatInstrumentableClassLoader"/>
</Context>
</web-app>
And thats my controller:
package my.pack.webTier.control;
import my.pack.dataAccessTier.domain.Presentation_page;
import my.pack.serviceTier.services.Page_manager_service;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.servlet.ModelAndView;
//@Controller
public class EditPresPageController {
//@Autowired
private Page_manager_service page_manager_service;
public void setPage_manager_service(Page_manager_service page_manager_service) {
this.page_manager_service = page_manager_service;
}
@RequestMapping("/editPresPage")
public ModelAndView EditPresPage(@RequestParam("page_id") int page_id,
@RequestParam("h1") String h1_value,
@RequestParam("h2") String h2_value,
@RequestParam("h3") String h3_value,
@RequestParam("h4") String h4_value,
@RequestParam("page_text") String page_text)
{
Presentation_page new_page=new Presentation_page(page_id,h1_value,h2_value,
h3_value,h4_value,page_text);
page_manager_service.create_new_page(new_page);
return new ModelAndView("/thanks.html");
}
}
Thats the stacktrace:
exception
javax.servlet.ServletException: Servlet.init() for servlet Dispatcher threw exception
org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99)
org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:929)
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407)
org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1002)
org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:585)
org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:312)
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
java.lang.Thread.run(Thread.java:722)
I'm working with spring MVC 3.2, eclipse 3.7, springTomcat/7.0.30 and using ANT in my project.
I've searched for an answer for this requirements - and didn't found one.
解决方案
You map your dispatcher on *.do:
<servlet-mapping>
<servlet-name>Dispatcher</servlet-name>
<url-pattern>*.do</url-pattern>
</servlet-mapping>
but your controller is mapped on an url without .do:
@RequestMapping("/editPresPage")
Try changing this to:
@RequestMapping("/editPresPage.do")
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