战争部署后,Tomcat显示错误状态404

时间:2018-12-12 12:29:21

标签: java tomcat servlets

我是Tomcat的新手,以下问题使我很难受。因此,我完成了一个非常简单的servlet项目,该项目可用于glassfish,jetty和wildfly,但是当我将其部署为war文件时,它不适用于tomcat(它可用于外部上下文部署)。

当我启动tomcat时,我使用管理器来部署war文件,并且一切正常,我可以毫无问题地访问新部署的servlet。当我关闭tomcat并重新启动它时(在从xampp进行正常的关闭过程或完全重新启动PC之后),问题就开始了。在那之后,使用先前的war文件,我尝试在localhost:8080上启动任何内容,并且没有页面在工作。甚至没有欢迎页面,管理器页面或servlet本身,所有这些都给了我错误状态404。

在日志中,我收到以下错误消息

  

严重:结束事件引发异常java.lang.NoSuchMethodException:   org.apache.catalina.deploy.WebXml addServlet位于   org.apache.tomcat.util.IntrospectionUtils.callMethod1(IntrospectionUtils.java:849)     在   org.apache.tomcat.util.digester.SetNextRule.end(SetNextRule.java:201)     在   org.apache.tomcat.util.digester.Digester.endElement(Digester.java:1063)     在   com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.endElement(AbstractSAXParser.java:609)     在   com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanEndElement(XMLDocumentFragmentScannerImpl.java:1782)     在   com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl $ FragmentContentDriver.next(XMLDocumentFragmentScannerImpl.java:2967)     在   com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(XMLDocumentScannerImpl.java:602)     在   com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(XMLDocumentFragmentScannerImpl.java:505)     在   com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:842)     在   com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:771)     在   com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(XMLParser.java:141)     在   com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(AbstractSAXParser.java:1213)     在   com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl $ JAXPSAXParser.parse(SAXParserImpl.java:643)     在org.apache.tomcat.util.digester.Digester.parse(Digester.java:1561)     在   org.apache.catalina.startup.ContextConfig.parseWebXml(ContextConfig.java:1825)     在   org.apache.catalina.startup.ContextConfig.getDefaultWebXmlFragment(ContextConfig.java:1480)     在   org.apache.catalina.startup.ContextConfig.webConfig(ContextConfig.java:1257)     在   org.apache.catalina.startup.ContextConfig.configureStart(ContextConfig.java:889)     在   org.apache.catalina.startup.ContextConfig.lifecycleEvent(ContextConfig.java:386)     在   org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:117)     在   org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBase.java:90)     在   org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5380)     在   org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)     在   org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:901)     在   org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:877)     在   org.apache.catalina.core.StandardHost.addChild(StandardHost.java:649)     在   org.apache.catalina.startup.HostConfig.deployWAR(HostConfig.java:1083)     在   org.apache.catalina.startup.HostConfig $ DeployWar.run(HostConfig.java:1879)     在   java.util.concurrent.Executors $ RunnableAdapter.call(Executors.java:511)     在java.util.concurrent.FutureTask.run(FutureTask.java:266)在   java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)     在   java.util.concurrent.ThreadPoolExecutor $ Worker.run(ThreadPoolExecutor.java:624)     在java.lang.Thread.run(Thread.java:748)

     

2018年12月12日下午2:11:11 org.apache.catalina.startup.ContextConfig   parseWebXml严重:在以下位置解析应用程序web.xml文件中的错误   文件:/ C:/xampp/tomcat/conf/web.xml org.xml.sax.SAXParseException;   systemId:文件:/ C:/xampp/tomcat/conf/web.xml; lineNumber:114;   columnNumber:15;错误发生在(114,15):   org.apache.catalina.deploy.WebXml addServlet位于   org.apache.tomcat.util.digester.Digester.createSAXException(Digester.java:2711)     在   org.apache.tomcat.util.digester.Digester.createSAXException(Digester.java:2743)     在   org.apache.tomcat.util.digester.Digester.endElement(Digester.java:1066)     在   com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.endElement(AbstractSAXParser.java:609)     在   com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanEndElement(XMLDocumentFragmentScannerImpl.java:1782)     在   com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl $ FragmentContentDriver.next(XMLDocumentFragmentScannerImpl.java:2967)     在   com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(XMLDocumentScannerImpl.java:602)     在   com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(XMLDocumentFragmentScannerImpl.java:505)     在   com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:842)     在   com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:771)     在   com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(XMLParser.java:141)     在   com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(AbstractSAXParser.java:1213)     在   com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl $ JAXPSAXParser.parse(SAXParserImpl.java:643)     在org.apache.tomcat.util.digester.Digester.parse(Digester.java:1561)     在   org.apache.catalina.startup.ContextConfig.parseWebXml(ContextConfig.java:1825)     在   org.apache.catalina.startup.ContextConfig.getDefaultWebXmlFragment(ContextConfig.java:1480)     在   org.apache.catalina.startup.ContextConfig.webConfig(ContextConfig.java:1257)     在   org.apache.catalina.startup.ContextConfig.configureStart(ContextConfig.java:889)     在   org.apache.catalina.startup.ContextConfig.lifecycleEvent(ContextConfig.java:386)     在   org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:117)     在   org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBase.java:90)     在   org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5380)     在   org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)     在   org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:901)     在   org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:877)     在   org.apache.catalina.core.StandardHost.addChild(StandardHost.java:649)     在   org.apache.catalina.startup.HostConfig.deployWAR(HostConfig.java:1083)     在   org.apache.catalina.startup.HostConfig $ DeployWar.run(HostConfig.java:1879)     在   java.util.concurrent.Executors $ RunnableAdapter.call(Executors.java:511)     在java.util.concurrent.FutureTask.run(FutureTask.java:266)在   java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)     在   java.util.concurrent.ThreadPoolExecutor $ Worker.run(ThreadPoolExecutor.java:624)     在java.lang.Thread.run(Thread.java:748)造成原因:   java.lang.NoSuchMethodException:org.apache.catalina.deploy.WebXml   在的addServlet   org.apache.tomcat.util.IntrospectionUtils.callMethod1(IntrospectionUtils.java:849)     在   org.apache.tomcat.util.digester.SetNextRule.end(SetNextRule.java:201)     在   org.apache.tomcat.util.digester.Digester.endElement(Digester.java:1063)     ...再加30

这是我的servlet代码:

LoginSuccesAdmin

@WebServlet(name = "succesAdmin", urlPatterns = { "/succesAdmin" })
public class LoginSuccesAdmin extends HttpServlet {

    public void doGet(HttpServletRequest req, HttpServletResponse resp) throws IOException {
        doPost(req, resp);
    }

    public void doPost(HttpServletRequest request, HttpServletResponse response) throws IOException {

        response.setContentType("text/html");
        PrintWriter out = response.getWriter();

        String usr = request.getParameter("userName");
        String pass = request.getParameter("userPass");
        System.out.println(usr + " " + pass);
        out.print("Welcome " + usr + " ");
        out.print("Your password is: " + pass);
        response.setStatus(200);
        out.close();
    }

}

LoginSuccesServlet

@WebServlet(name = "succesServlet", urlPatterns = { "/succesServlet" })
public class LoginSuccesServlet extends HttpServlet {

    public void doGet(HttpServletRequest req, HttpServletResponse resp) throws IOException {
        doPost(req, resp);
    }

    public void doPost(HttpServletRequest request, HttpServletResponse response) throws IOException {

        response.setContentType("text/html");
        PrintWriter out = response.getWriter();

        String usr = request.getParameter("userName");
        System.out.println(usr);
        out.print("Welcome " + usr);
        response.setStatus(200);
        out.close();
    }

}

LoginUser

@WebServlet(name = "loginServlet", urlPatterns = { "/loginServlet" })
public class LoginUser extends HttpServlet {

    public void doGet(HttpServletRequest req, HttpServletResponse resp) throws IOException, ServletException {
        doPost(req, resp);
    }

    public void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {

        response.setContentType("text/html");
        PrintWriter out = response.getWriter();

        out.println("<html>\n" +
                "  <form action=\"loginServlet\" method=\"post\">");
        out.println("Name:<input type=\"text\" name=\"userName\"/><br/>\n" +
                "      Password:<input type=\"password\" name=\"userPass\"/><br/>\n" +
                "      <input type=\"submit\" name=\"press\" value=\"login\"/>");
        out.println("  </form>\n" +
                "</html>");

        String press = request.getParameter("press");
        if (press == null) {
            //no button has been selected
        } else if (press.equals("login")) {
            String userName = request.getParameter("userName");
            String userPass = request.getParameter("userPass");

            if (userName.equals("servlet") && userPass.equals("servlet")) {
                RequestDispatcher rd=request.getRequestDispatcher("succesServlet");
                if(rd == null) {
                    response.sendError(404);
                    return;
                }
                rd.forward(request, response);
            } else if (userName.equals("admin") && userPass.equals("admin")) {
                RequestDispatcher rd=request.getRequestDispatcher("succesAdmin");
                if(rd == null) {
                    response.sendError(404);
                    return;
                }
                rd.forward(request, response);
            } else {
                out.print("Wrong username or password");
            }
        }
    }
}

web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"
         version="3.1"
         metadata-complete="false">
</web-app>

build.gradle

    plugins {
    id 'java'
    id 'war'
    id 'application'
}

group 'LoginServletTJAP'
version '1.0-SNAPSHOT'

sourceCompatibility = 1.8

repositories {
    mavenCentral()
}

dependencies {
    testCompile group: 'junit', name: 'junit', version: '4.12'
    providedCompile 'javax.servlet:javax.servlet-api:+'
    compile 'org.eclipse.jetty:jetty-server:9.0.0.RC2'
    compile 'org.eclipse.jetty:jetty-servlet:9.0.0.RC2'
    compile 'org.apache.tomcat:tomcat-catalina:7.0.41'
    compile 'org.apache.tomcat:tomcat-util:7.0.41'
    compile 'org.apache.tomcat.embed:tomcat-embed-core:7.0.41'
}


sourceSets {
    main {
        java {
            srcDirs = ['src']
        }
    }
}

war {
    webInf { from 'src' } // adds a file-set to the WEB-INF dir.
    webXml = file('web/WEB-INF/web.xml') // copies a file to WEB-INF/web.xml
}

war.doLast {
    ant.unzip(src: war.archivePath, dest: "$buildDir/exploded")
}

jar {
    manifest {
        attributes(
                'Main-Class': 'Main'
        )
    }
    from { configurations.compile.collect { it.isDirectory() ? it : zipTree(it) } }
}

task(selectServer, dependsOn: 'classes', type: JavaExec) {
    main = 'Main'
    classpath = sourceSets.main.runtimeClasspath
    standardInput = System.in
}

defaultTasks 'selectServer'

我试图重新安装xampp,以创建一个新项目,并通过自己在Webapps中复制战争(而不使用管理器)进行部署。该servlet可以完美地适用于所有内容,包括tomcat嵌入式和jetty嵌入式,这也是我使用外部上下文进行部署时所说的方式,但仅通过部署.war文件,它就不能仅在tomcat上运行。除了部署战争并添加具有manager-gui角色的用户外,我在tomcat中没有进行任何其他更改。其他所有内容都是xampp的tomcat的默认设置。

0 个答案:

没有答案