java基础 servlet-class找不到
0
悬赏园豆：10
[已解决问题]
解决于 2013-01-14 09:25
在编辑web.xml的时候，为什么点击servlet找不到自己编写的myServlet.LoginValidate这个类呀 ？直接拿web.xml进行添加上去，运行不了。请问怎样操作的？刚学这些，希望指导。希望配置成这样
<servlet>
<servlet-name>Login</servlet-name>
<servlet-class>myServlet.LoginValidate</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>login</servlet-name>
<url-pattern>/login.do</url-pattern>
</servlet-mapping>
问题补充：
2013-1-11 9:09:44 org.apache.catalina.core.AprLifecycleListener init
信息: The APR based Apache Tomcat Native library which allows optimal performance in production environments was not found on the java.library.path: C:\Program Files\Genuitec\Common\binary\com.sun.java.jdk.win32.x86_1.6.0.013\bin;E:\tomcat\bin
2013-1-11 9:09:45 org.apache.coyote.http11.Http11Protocol init
信息: Initializing Coyote HTTP/1.1 on http-8080
2013-1-11 9:09:45 org.apache.catalina.startup.Catalina load
信息: Initialization processed in 2235 ms
2013-1-11 9:09:46 org.apache.catalina.core.StandardService start
信息: Starting service Catalina
2013-1-11 9:09:46 org.apache.catalina.core.StandardEngine start
信息: Starting Servlet Engine: Apache Tomcat/6.0.33
2013-1-11 9:09:46 org.apache.catalina.startup.HostConfig deployDescriptor
信息: Deploying configuration descriptor host-manager.xml
2013-1-11 9:09:47 org.apache.catalina.startup.HostConfig deployDescriptor
信息: Deploying configuration descriptor manager.xml
2013-1-11 9:09:47 org.apache.catalina.startup.HostConfig deployDirectory
信息: Deploying web application directory .metadata
2013-1-11 9:09:47 org.apache.catalina.startup.HostConfig deployDirectory
信息: Deploying web application directory demo
2013-1-11 9:09:47 org.apache.tomcat.util.digester.Digester endElement
严重: End event threw exception
java.lang.reflect.InvocationTargetException
at sun.reflect.GeneratedMethodAccessor18.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.apache.tomcat.util.IntrospectionUtils.callMethodN(IntrospectionUtils.java:959)
at org.apache.catalina.startup.CallMethodMultiRule.end(WebRuleSet.java:789)
at org.apache.tomcat.util.digester.Rule.end(Rule.java:229)
at org.apache.tomcat.util.digester.Digester.endElement(Digester.java:1138)
at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.endElement(AbstractSAXParser.java:601)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanEndElement(XMLDocumentFragmentScannerImpl.java:1774)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl$FragmentContentDriver.next(XMLDocumentFragmentScannerImpl.java:2930)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(XMLDocumentScannerImpl.java:648)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(XMLDocumentFragmentScannerImpl.java:510)
at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:807)
at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:737)
at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(XMLParser.java:107)
at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(AbstractSAXParser.java:1205)
at com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl$JAXPSAXParser.parse(SAXParserImpl.java:522)
at org.apache.tomcat.util.digester.Digester.parse(Digester.java:1642)
at org.apache.catalina.startup.ContextConfig.applicationWebConfig(ContextConfig.java:365)
at org.apache.catalina.startup.ContextConfig.start(ContextConfig.java:1076)
at org.apache.catalina.startup.ContextConfig.lifecycleEvent(ContextConfig.java:261)
at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:142)
at org.apache.catalina.core.StandardContext.start(StandardContext.java:4612)
at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:799)
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:779)
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:601)
at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:1079)
at org.apache.catalina.startup.HostConfig.deployDirectories(HostConfig.java:1002)
at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:506)
at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1317)
at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:324)
at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:142)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1065)
at org.apache.catalina.core.StandardHost.start(StandardHost.java:840)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1057)
at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:463)
at org.apache.catalina.core.StandardService.start(StandardService.java:525)
at org.apache.catalina.core.StandardServer.start(StandardServer.java:754)
at org.apache.catalina.startup.Catalina.start(Catalina.java:595)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:289)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:414)
Caused by: java.lang.IllegalArgumentException: Invalid <url-pattern> login.do in servlet mapping
at org.apache.catalina.core.StandardContext.addServletMapping(StandardContext.java:2743)
at org.apache.catalina.core.StandardContext.addServletMapping(StandardContext.java:2719)
... 45 more
2013-1-11 9:09:47 org.apache.catalina.startup.ContextConfig applicationWebConfig
严重: Parse error in application web.xml file at jndi:/localhost/demo/WEB-INF/web.xml
java.lang.IllegalArgumentException: Invalid <url-pattern> login.do in servlet mapping
at org.apache.tomcat.util.digester.Digester.createSAXException(Digester.java:2806)
at org.apache.tomcat.util.digester.Digester.createSAXException(Digester.java:2832)
at org.apache.tomcat.util.digester.Digester.endElement(Digester.java:1141)
at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.endElement(AbstractSAXParser.java:601)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanEndElement(XMLDocumentFragmentScannerImpl.java:1774)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl$FragmentContentDriver.next(XMLDocumentFragmentScannerImpl.java:2930)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(XMLDocumentScannerImpl.java:648)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(XMLDocumentFragmentScannerImpl.java:510)
at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:807)
at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:737)
at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(XMLParser.java:107)
at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(AbstractSAXParser.java:1205)
at com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl$JAXPSAXParser.parse(SAXParserImpl.java:522)
at org.apache.tomcat.util.digester.Digester.parse(Digester.java:1642)
at org.apache.catalina.startup.ContextConfig.applicationWebConfig(ContextConfig.java:365)
at org.apache.catalina.startup.ContextConfig.start(ContextConfig.java:1076)
at org.apache.catalina.startup.ContextConfig.lifecycleEvent(ContextConfig.java:261)
at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:142)
at org.apache.catalina.core.StandardContext.start(StandardContext.java:4612)
at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:799)
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:779)
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:601)
at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:1079)
at org.apache.catalina.startup.HostConfig.deployDirectories(HostConfig.java:1002)
at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:506)
at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1317)
at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:324)
at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:142)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1065)
at org.apache.catalina.core.StandardHost.start(StandardHost.java:840)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1057)
at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:463)
at org.apache.catalina.core.StandardService.start(StandardService.java:525)
at org.apache.catalina.core.StandardServer.start(StandardServer.java:754)
at org.apache.catalina.startup.Catalina.start(Catalina.java:595)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:289)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:414)
2013-1-11 9:09:47 org.apache.catalina.startup.ContextConfig applicationWebConfig
严重: Occurred at line 11 column 20
2013-1-11 9:09:47 org.apache.catalina.startup.ContextConfig start
严重: Marking this application unavailable due to previous error(s)
2013-1-11 9:09:48 org.apache.catalina.core.StandardContext start
严重: Error getConfigured
2013-1-11 9:09:48 org.apache.catalina.core.StandardContext start
严重: Context [/demo] startup failed due to previous errors
2013-1-11 9:09:48 org.apache.catalina.startup.HostConfig deployDirectory
信息: Deploying web application directory Demo2
2013-1-11 9:09:48 org.apache.catalina.startup.HostConfig deployDirectory
信息: Deploying web application directory demo3
2013-1-11 9:09:48 org.apache.catalina.startup.HostConfig deployDirectory
信息: Deploying web application directory docs
2013-1-11 9:09:48 org.apache.catalina.startup.HostConfig deployDirectory
信息: Deploying web application directory examples
2013-1-11 9:09:49 org.apache.catalina.core.ApplicationContext log
信息: ContextListener: contextInitialized()
2013-1-11 9:09:49 org.apache.catalina.core.ApplicationContext log
信息: SessionListener: contextInitialized()
2013-1-11 9:09:49 org.apache.catalina.startup.HostConfig deployDirectory
信息: Deploying web application directory library
2013-1-11 9:09:49 org.apache.catalina.startup.HostConfig deployDirectory
信息: Deploying web application directory ROOT
2013-1-11 9:09:49 org.apache.coyote.http11.Http11Protocol start
信息: Starting Coyote HTTP/1.1 on http-8080
2013-1-11 9:09:50 org.apache.jk.common.ChannelSocket init
信息: JK: ajp13 listening on /0.0.0.0:8009
2013-1-11 9:09:50 org.apache.jk.server.JkMain start
信息: Jk running ID=0 time=0/78 config=null
2013-1-11 9:09:50 org.apache.catalina.startup.Catalina start
信息: Server startup in 4427 ms
我直接的修改配置文件，变成如下：
<?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>login</servlet-name>
<servlet-class>myServlet.LoginValidate</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>login</servlet-name>
<url-pattern>login.do</url-pattern>
</servlet-mapping>
<welcome-file-list>
<welcome-file>login.htm</welcome-file>
</welcome-file-list>
<login-config>
<auth-method>BASIC</auth-method>
</login-config>
</web-app>
运行服务器后，报上面的错误。下面是提交的页面：
<html>
<head>
<title>登陆页面</title>
</head>
<body>
<form method="post" action="login.do">
用户名：
<input type="text" name="username"/>
密码：
<input type="password" name="password"/>
<input type="Submit" value="提交"/>
</form>
</body>
</html>
最佳答案
0
我的建议：
第一：查看你的myServlet.LoginValidate有没有实现Servlet接口
第二: 点击Project-->clean , 然后选中你的项目进行清理一次看看
收获园豆：5
有实现对Servlet接口，执行clean后还是原来的样子。然后手动修改配置文件，报上面的错误。请问如何修改？
其他回答(1)
0
是不是你的LoginValidate类里面没有包的定义？？
收获园豆：5
package myServlet;
import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
public class LoginValidate extends HttpServlet{
public void doGet(HttpServletRequest request,HttpServletResponse response)throws ServletException,IOException{
String name = request.getParameter("username");
String pwd = request.getParameter("password");
LoginDBO loginDBO = new LoginDBO();
String message = loginDBO.login(name,pwd);
String url = "returnMessage.jsp?message="+message;
url = new String(url.getBytes("GBK"),"ISO8859_1");
response.sendRedirect(url);
}
public void doPost(HttpServletRequest request,HttpServletResponse response)throws ServletException,IOException{
this.doGet(request, response) ;
}
}
这个是类的代码，里面包含了对包的定义了的。
