服务器未能在eclipse juno中启动

我写了一个servlet，当我试图运行代码时，它提出了以下消息： “服务器本地主机上的服务器Tomcat7.0无法启动。”我尝试了所有可能的技巧在我的面前，但它不干活已清理服务器在以前这儿过得给出已经成功地执行before.The代码我运行作为servlet文件JSP文件类似的链接说是：服务器未能在eclipse juno中启动

import java.io.PrintWriter; 

import javax.servlet.ServletException; 
import javax.servlet.annotation.WebServlet; 
import javax.servlet.http.HttpServlet; 
import javax.servlet.http.HttpServletRequest; 
import javax.servlet.http.HttpServletResponse; 

import business.User; 
import data.UserIO; 

@WebServlet("/AddToEmailListServlet") 
public class AddToEmailListServlet extends HttpServlet 
{ 
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException 
{ 
    doPost(request,response); 
} 

/** 
* @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response) 
*/ 
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException 
{ 
    String firstname=request.getParameter("firstname"); 
    String lastname=request.getParameter("lastname"); 
    String emailaddress=request.getParameter("emailaddress"); 
    String getmail=request.getParameter("addEmail"); 
    String country=request.getParameter("country"); 

    ServletContext sc=this.getServletContext(); 
    String path=sc.getRealPath("/WEB-INF/EmailList.txt"); 

    User user=new User(lastname,firstname,emailaddress); 
    UserIO.add(user, path); 

    response.setContentType("text/html;charset-UTF-8"); 
    PrintWriter out=response.getWriter(); 
    out.println("<!DOCTYPE html PUBLIC \"-//W3C//DTD HTML 4.01 Transitional//EN\" \"http://www.w3.org/TR/html4/loose.dtd\">\n" 
    +"<html>\n" 
    +"<head>\n" 
    +"<title>Insert title here</title>\n" 
    +"</head>\n" 
    +"<body>\n" 
    +"<h1>Thanks for joining our email list.</h1>\n" 
    +"<p>Here is the information you entered.</p>\n" 
    +"<table cellspacing=\"5\" cellpadding=\"5\" border=\"1\">\n" 
    +"<tr>\n" 
    +"<td align=\"right\">First name:</td>\n" 
    +"<td>"+firstname+"</td>\n" 
    +"</tr>\n" 
    +"<tr>\n" 
    +"<td align=\"right\">Last name:</td>\n" 
    +"<td>"+lastname+"</td>\n" 
    +"</tr>\n" 
    +"<tr>\n" 
    +"<td align=\"right\">Email address:</td>\n" 
    +"<td>"+emailaddress+"</td>\n" 
    +"</tr>\n" 
    +"</table>\n" 
    +"<p>Toenter another email address click on the Back <br>\n" 
    +"button browser or the Return button shown <br> below</p>\n" 
    +"Your country is"+country+"<br>\n" 
    +"<form action=\"JoinEmailList.html\" method=\"post\">\n" 
    + "<input type=\"submit\" value=\"Return\">\n" 
    +"</form>\n" 
    +"</body>\n" 
    +"</html>\n"); 
    out.close(); 
} 
}

必需的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"> 
<!-- the definition of the servlet --> 
<servlet> 
    <servlet-name>AddToEmailListServlet</servlet-name> 
    <servlet-class>AddToEmailListServlet</servlet-class> 
</servlet> 
<!-- the mapping for the servlets --> 
<servlet-mapping> 
    <servlet-name>AddToEmailListServlet</servlet-name> 
    <url-pattern>/addToEmailList</url-pattern> 
</servlet-mapping> 
<!-- other settings --> 
<session-config> 
    <session-timeout>30</session-timeout> 
</session-config> 
<welcome-file-list> 
    <welcome-file>JoinEmailList2.html</welcome-file> 
</welcome-file-list> 
</web-app>

我还需要做些什么？

在控制台上的堆栈跟踪是：

Aug 28, 2014 11:26:43 AM 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: /usr/java/packages/lib/amd64:/usr/lib64:/lib64:/lib:/usr/lib 
Aug 28, 2014 11:26:43 AM org.apache.tomcat.util.digester.SetPropertiesRule begin 
WARNING: [SetPropertiesRule]{Server/Service/Engine/Host/Context} Setting property 'source' to 'org.eclipse.jst.jee.server:Test' did not find a matching property. 
Aug 28, 2014 11:26:44 AM org.apache.coyote.AbstractProtocol init 
INFO: Initializing ProtocolHandler ["http-bio-8080"] 
Aug 28, 2014 11:26:44 AM org.apache.coyote.AbstractProtocol init 
INFO: Initializing ProtocolHandler ["ajp-bio-8009"] 
Aug 28, 2014 11:26:44 AM org.apache.catalina.startup.Catalina load 
INFO: Initialization processed in 798 ms 
Aug 28, 2014 11:26:44 AM org.apache.catalina.core.StandardService startInternal 
INFO: Starting service Catalina 
Aug 28, 2014 11:26:44 AM org.apache.catalina.core.StandardEngine startInternal 
INFO: Starting Servlet Engine: Apache Tomcat/7.0.55 
Aug 28, 2014 11:26:44 AM org.apache.coyote.AbstractProtocol start 
INFO: Starting ProtocolHandler ["http-bio-8080"] 
Aug 28, 2014 11:26:44 AM org.apache.coyote.AbstractProtocol start 
INFO: Starting ProtocolHandler ["ajp-bio-8009"] 
Aug 28, 2014 11:26:44 AM org.apache.catalina.startup.Catalina start 
INFO: Server startup in 649 ms 
Aug 28, 2014 11:28:03 AM org.apache.catalina.core.ApplicationContext log 
INFO: Marking servlet AddToEmailListServlet as unavailable 
Aug 28, 2014 11:28:03 AM org.apache.catalina.core.StandardWrapperValve invoke 
SEVERE: Allocate exception for servlet AddToEmailListServlet 
java.lang.ClassNotFoundException: email.AddToEmailListServlet 
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1720) 
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1571) 
at org.apache.catalina.core.DefaultInstanceManager.loadClass(DefaultInstanceManager.java:530) 
at org.apache.catalina.core.DefaultInstanceManager.loadClassMaybePrivileged(DefaultInstanceManager.java:512) 
at org.apache.catalina.core.DefaultInstanceManager.newInstance(DefaultInstanceManager.java:139) 
at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1148) 
at org.apache.catalina.core.StandardWrapper.allocate(StandardWrapper.java:864) 
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:134) 
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122) 
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:501) 
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171) 
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103) 
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:950) 
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116) 
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408) 
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1070) 
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:611) 
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:314) 
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) 
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) 
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) 
at java.lang.Thread.run(Thread.java:745)

来源

2014-08-28 Paku

您是否在控制台，堆栈跟踪或对话窗口中看到错误？在前一种情况下，请发布整个控制台日志，在第二种情况下，该对话框上应该有一个“更多信息”按钮，请发布它显示的内容。 – watery 2014-08-28 05:56:03

在标签名称是不一样的。他们应该是相同的，就像

<servlet> 
    <servlet-name>AddToEmailListServlet</servlet-name> 
    <servlet-class>email.AddToEmailListServlet</servlet-class> 
</servlet> 

<servlet-mapping> 
    <servlet-name>AddToEmailListServlet</servlet-name> 
    <url-pattern>/addToEmailList</url-pattern> 
</servlet-mapping>

来源

2014-08-28 05:55:10 sendon1982

是的，这是一个错误！ – Paku 2014-08-28 05:57:40

但现在它只是导致HTTP状态错误500. – Paku 2014-08-28 05:59:00

您是否在包邮件下有AddToEmailListServlet类？ – sendon1982 2014-08-28 06:04:23

服务器未能在eclipse juno中启动

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