can run Tomcat servlet examples, but not mine 2

12345671 · May 31, 2004

I have redhat9,Apache2,Tomcat4.1.30,jdk1.2.2. I use webapp as connector between APache and Tomcat.

I can view

http://192.168.0.10/,

means Apache is running
I can view

http://192.168.0.10/examples/servlet/HelloWorldExample,

the servlet example from Tomcat.

Then I put my own hello.class at $CATALINA_HOME/webapps/examples/WEB-INF/classes, the same place as HelloWorldExample.class.

I try:

http://192.168.0.10/examples/servlet/hello,

it didn't show the Hello message but ask me to download the file.
What shall I do? Please advise!!!!
I check the /webapps/examples/WEB-INF\web.xml, it has

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

The followign is my own hello.class.

import...

public class hello extends HttpServlet{
public void doGet(HttpServletRequest req,HttpServletResponse res)throws ServletException,IOException{
PrintWriter output;
res.setContentType("test/html");
output=res.getWriter();
output.println("<HTML><HEAD><TITLE>Hello</TITLE></HEAD>");
output.println("<BODY>");
output.println("Hello Test");
output.println("</BODY></HTML>");
}
}

sedj · May 31, 2004

Its best to map your servlets like this in web.xml :

<servlet>
<servlet-name>hello</servlet-name>
<servlet-class>hello</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet>
<servlet-name>hello</servlet-name>
<servlet-class>hello</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>

12345671 · Jun 1, 2004

I added it, try on a WinXP and my Linuk box, both still ask me to download or Open, then I click Open, then it shows Windows cannot open this file hello, windows needs to know what program crested it,search on the web to...seems the computer cannot run this class? What is worng? Too high Java servlet version?

funkguy4 · Jun 4, 2004

Put your hello.class like this:
%CATALINA_HOME%/webapps/ROOT/classes/hello/hello.class

Then change the %CATALINA_HOME%/webapps/ROOT/web.xml to have the following as subelements to the <web-app> tag:

<servlet>
<servlet-name>hello</servlet-name>
<servlet-class>hello.hello</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>hello</servlet-name>
<url-pattern>/examples/servlet/hello</url-pattern>
</servlet-mapping>

jmgb · Jun 22, 2004

You are using a wrong html tag (res.setContentType("test/html")).

You must write the ContentType like "text/html".

That is the reason which your browser is requesting you download this file.

12345671 · Jun 22, 2004

You are totally right, that is the reason, after I corrected it, it is working. Sigh, the mistake took me so long time. Maybe because I am using nodtpad, I am thinking NetBeans maybe can prevent this kind of problem.

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can run Tomcat servlet examples, but not mine 2

12345671

IS-IT--Management

sedj

Programmer

12345671

IS-IT--Management

funkguy4

Vendor

jmgb

Programmer

12345671

IS-IT--Management

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