Tomcat显示404

Question

I've got a Java EE project that works ok in Eclipse. But when I deploy it to a server with a normal Tomcat-7 it shows a 404 error on every servlet page (while .jsp works).

I've tried to deploy there a .war file and tried to just copy the whole project folder including the WEB-INF directory. The result is the same.

web.xml file contains the following:

<?xml version="1.0" encoding="ASCII"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
         xmlns="http://java.sun.com/xml/ns/javaee" 
         xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" 
         xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" 
         version="2.5">
  <display-name>acs</display-name>
  <servlet>
    <display-name>jsp</display-name>
    <servlet-name>jsp</servlet-name>
    <servlet-class>org.apache.jasper.servlet.JspServlet</servlet-class>
  </servlet>
  <servlet-mapping>
    <servlet-name>jsp</servlet-name>
    <url-pattern>*.jsp</url-pattern>
  </servlet-mapping>
  <servlet-mapping>
    <servlet-name>default</servlet-name>
    <url-pattern>*.html</url-pattern>
    <url-pattern>*.png</url-pattern>
    <url-pattern>*.gif</url-pattern>
    <url-pattern>*.jpg</url-pattern>
    <url-pattern>*.css</url-pattern>
    <url-pattern>*.js</url-pattern>
    <url-pattern>*.svg</url-pattern>
    <url-pattern>*.kml</url-pattern>
  </servlet-mapping>
</web-app>

The every servlet class contains annotations like that

@WebServlet("/full") 

So why it's happening? And is there a way to know where Tomcat trying to search that servlets? Or something. So now I'm like standing before the wall and it shows me 404 and I'm do not have a tiny idea what's going wrong...

Answer 1

For every servlet we are adding 2 main tags < servlet > and < servlet-mapping > like

   <servlet>
    <display-name>jsp</display-name>
    <servlet-name>jsp</servlet-name>
    <servlet-class>org.apache.jasper.servlet.JspServlet</servlet-class>
  </servlet>

  <servlet-mapping>
    <servlet-name>jsp</servlet-name>
    <url-pattern>*.jsp</url-pattern>
  </servlet-mapping>

While for " default " servlet I have not found the < servlet > tag with servlet-class mapping