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@Florida

You need to turn on the "invoker" servlet in your <TOMCAT_HOME>/conf/web.xml

donway(donway)
by default , the invoker servlet is be commented out , turn on it ,like this "
<servlet>
<servlet-name>invoker</servlet-name>
<servlet-class>
org.apache.catalina.servlets.InvokerServlet
</servlet-class>
<init-param>
<param-name>debug</param-name>
<param-value>0</param-value>
</init-param>
<load-on-startup>2</load-on-startup>
</servlet>

<servlet-mapping>
<servlet-name>invoker</servlet-name>
<url-pattern>/servlet/*</url-pattern>
</servlet-mapping>"

then you can call your servlets in a browser ,like "http://localhost:8080/servelt/myServletClass"
(#2096219@0)
Last Updated: 2005-1-27
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Replies, comments and Discussions:

  • 工作学习 / IT技术讨论 / 求助：Tomcat 4.1，我的servlet的程序编译好了却总也访问不到，无论放在WEB-INF或者classes目录下面，错误号码是404，程序肯定没问题，在学校的Tomcat上能访问 -x86(P.A.C.E.R.); 2005-1-26 (#2095555@0)
    • 检查一下，访问日志 -hk_tnt(HK_TNT); 2005-1-26 {45} (#2095585@0)
      如题，检查一下，看LOG文件，一般都能定位问题。
      • 谢谢DX，这里是最后一次启动之后到关闭的log，看了半天还是比较蒙，我建了一个目录叫myWeb，不过无论那个.class文件放在ROOT的还是myWeb都不行，请帮忙看看我的Log，谢谢 -x86(P.A.C.E.R.); 2005-1-26 {5088} (#2095594@0)
        本文发表在 rolia.net 枫下论坛2005-01-26 18:46:41 HostConfig[localhost]: Deploying configuration descriptor admin.xml
        2005-01-26 18:46:43 HostConfig[localhost]: Deploying configuration descriptor manager.xml
        2005-01-26 18:46:43 WebappLoader[/manager]: Deploying class repositories to work directory C:\Program Files\Apache Group\Tomcat 4.1\work\Standalone\localhost\manager
        2005-01-26 18:46:43 ContextConfig[/manager]: Configured an authenticator for method BASIC
        2005-01-26 18:46:43 StandardManager[/manager]: Seeding random number generator class java.security.SecureRandom
        2005-01-26 18:46:43 StandardManager[/manager]: Seeding of random number generator has been completed
        2005-01-26 18:46:43 StandardWrapper[/manager:default]: Loading container servlet default
        2005-01-26 18:46:43 StandardWrapper[/manager:invoker]: Loading container servlet invoker
        2005-01-26 18:46:43 HostConfig[localhost]: Deploying web application directory myWeb
        2005-01-26 18:46:43 StandardHost[localhost]: Installing web application at context path /myWeb from URL file:C:\Program Files\Apache Group\Tomcat 4.1\webapps\myWeb
        2005-01-26 18:46:43 WebappLoader[/myWeb]: Deploying class repositories to work directory C:\Program Files\Apache Group\Tomcat 4.1\work\Standalone\localhost\myWeb
        2005-01-26 18:46:43 WebappLoader[/myWeb]: Deploy class files /WEB-INF/classes to C:\Program Files\Apache Group\Tomcat 4.1\webapps\myWeb\WEB-INF\classes
        2005-01-26 18:46:43 StandardManager[/myWeb]: Seeding random number generator class java.security.SecureRandom
        2005-01-26 18:46:43 StandardManager[/myWeb]: Seeding of random number generator has been completed
        2005-01-26 18:46:43 StandardWrapper[/myWeb:default]: Loading container servlet default
        2005-01-26 18:46:43 StandardWrapper[/myWeb:invoker]: Loading container servlet invoker
        2005-01-26 18:46:43 HostConfig[localhost]: Deploying web application directory ROOT
        2005-01-26 18:46:43 StandardHost[localhost]: Installing web application at context path from URL file:C:\Program Files\Apache Group\Tomcat 4.1\webapps\ROOT
        2005-01-26 18:46:44 WebappLoader[]: Deploying class repositories to work directory C:\Program Files\Apache Group\Tomcat 4.1\work\Standalone\localhost\_
        2005-01-26 18:46:44 WebappLoader[]: Deploy class files /WEB-INF/classes to C:\Program Files\Apache Group\Tomcat 4.1\webapps\ROOT\WEB-INF\classes
        2005-01-26 18:46:44 StandardManager[]: Seeding random number generator class java.security.SecureRandom
        2005-01-26 18:46:44 StandardManager[]: Seeding of random number generator has been completed
        2005-01-26 18:46:44 StandardWrapper[:default]: Loading container servlet default
        2005-01-26 18:46:44 StandardWrapper[:invoker]: Loading container servlet invoker
        2005-01-26 18:46:44 HostConfig[localhost]: Deploying web application directory tomcat-docs
        2005-01-26 18:46:44 StandardHost[localhost]: Installing web application at context path /tomcat-docs from URL file:C:\Program Files\Apache Group\Tomcat 4.1\webapps\tomcat-docs
        2005-01-26 18:46:44 WebappLoader[/tomcat-docs]: Deploying class repositories to work directory C:\Program Files\Apache Group\Tomcat 4.1\work\Standalone\localhost\tomcat-docs
        2005-01-26 18:46:44 StandardManager[/tomcat-docs]: Seeding random number generator class java.security.SecureRandom
        2005-01-26 18:46:44 StandardManager[/tomcat-docs]: Seeding of random number generator has been completed
        2005-01-26 18:46:44 StandardWrapper[/tomcat-docs:default]: Loading container servlet default
        2005-01-26 18:46:44 StandardWrapper[/tomcat-docs:invoker]: Loading container servlet invoker
        2005-01-26 18:46:44 HostConfig[localhost]: Deploying web application directory webdav
        2005-01-26 18:46:44 StandardHost[localhost]: Installing web application at context path /webdav from URL file:C:\Program Files\Apache Group\Tomcat 4.1\webapps\webdav
        2005-01-26 18:46:44 WebappLoader[/webdav]: Deploying class repositories to work directory C:\Program Files\Apache Group\Tomcat 4.1\work\Standalone\localhost\webdav
        2005-01-26 18:46:44 StandardManager[/webdav]: Seeding random number generator class java.security.SecureRandom
        2005-01-26 18:46:44 StandardManager[/webdav]: Seeding of random number generator has been completed
        2005-01-26 18:46:44 StandardWrapper[/webdav:default]: Loading container servlet default
        2005-01-26 18:46:44 StandardWrapper[/webdav:invoker]: Loading container servlet invoker
        2005-01-26 18:58:55 StandardHost[localhost]: Removing web application at context path /admin
        2005-01-26 18:58:55 StandardHost[localhost]: Removing web application at context path /webdav
        2005-01-26 18:58:55 StandardHost[localhost]: Removing web application at context path /examples
        2005-01-26 18:58:55 StandardHost[localhost]: Removing web application at context path /tomcat-docs
        2005-01-26 18:58:55 StandardHost[localhost]: Removing web application at context path /myWeb
        2005-01-26 18:58:55 StandardHost[localhost]: Removing web application at context path
        2005-01-26 18:58:55 StandardHost[localhost]: Removing web application at context path /manager更多精彩文章及讨论，请光临枫下论坛 rolia.net
    • up -x86(P.A.C.E.R.); 2005-1-26 (#2095644@0)
    • 进来 -xanada(㊣流水); 2005-1-26 {457} (#2095706@0)
      1. 检查 ...Tomcat/webapps/myMeb/WEB-INF/web.xml，应该和下面的配置差不多：

      <servlet>
      <servlet-name>HelloWorldServlet</servlet-name>
      <servlet-class>com.x86.HelloWorldServlet</servlet-class>
      </servlet>

      <servlet-mapping>
      <servlet-name>HelloWorldServlet</servlet-name>
      <url-pattern>/servlet/HelloWorldServlet</url-pattern>
      </servlet-mapping>

      2. 确保你的HelloWorldServlet.class放在 ...Tomcat/webapps/myWeb/WEB-INF/classes/com/x86/ 下

      3. 再试再报
      • 照做了，这回不同的message， -x86(P.A.C.E.R.); 2005-1-26 {190} (#2095729@0)
        browser显示错误500，javax.servlet.ServletException: Error allocating a servlet instance, root cause是java.lang.NoClassDefFoundError: com/x86/HelloWorldServlet (wrong name: HelloWorldServlet)
        • Then -xanada(㊣流水); 2005-1-26 {254} (#2095752@0)
          检查你的HelloWorldServlet.java第一行是不是这么写的：
          package com.x86;
          如果不是，加上后重新编译，生成新的class，再试。

          或者，按照你的package name更改你的<servlet-class>，使其吻合。然后把class文件放在相应的 ...Tomcat/webapps/myWeb/WEB-INF/classes/下。
          • 终于搞定了！！！严重感谢流水DX，哈哈哈哈哈 -x86(P.A.C.E.R.); 2005-1-26 (#2095778@0)
    • You need to turn on the "invoker" servlet in your <TOMCAT_HOME>/conf/web.xml -donway(donway); 2005-1-27 {682} (#2096219@0)
      by default , the invoker servlet is be commented out , turn on it ,like this "
      <servlet>
      <servlet-name>invoker</servlet-name>
      <servlet-class>
      org.apache.catalina.servlets.InvokerServlet
      </servlet-class>
      <init-param>
      <param-name>debug</param-name>
      <param-value>0</param-value>
      </init-param>
      <load-on-startup>2</load-on-startup>
      </servlet>

      <servlet-mapping>
      <servlet-name>invoker</servlet-name>
      <url-pattern>/servlet/*</url-pattern>
      </servlet-mapping>"

      then you can call your servlets in a browser ,like "http://localhost:8080/servelt/myServletClass"
      • 明白了，这个说明很专业，谢谢。 -x86(P.A.C.E.R.); 2005-1-27 (#2096300@0)
      • 这是个基本的修改啊。你连这个都没有做？ -hk_tnt(HK_TNT); 2005-1-27 {208} (#2097026@0)
        昨天我也想到的可能是这个问题，但想想，你以前都调通过，应该不会。呵
        ，这老哥水平不错。现在还在做这个行业吗？唉，国内搞这个搞了很长时间，来这里，找一份类似的活，不容易。我对APACHE的东西，都很感兴趣，多多交流！

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