response.setContentType("text/html");

PrintWriter writer = response.getWriter();



writer.println("Hello World!");

}

}

8.Ctrl+S保存，右键HelloWorld project,选择Tomcat Project->update context to server.xml

7.在Eclipse中启动Tomcat

9.在用浏览器访问http://localhost:8080/HelloWorld/servlet/HelloWorld

10．怎么样，看到HelloWorld了没有