eclipse+tomcat+httpServlet初学

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1.在eclipse中配置tomcat，参考上一边文章，建立的web项目tomcatWeb目录结构

2.添加Servlet处理类

3. 实现doGet()与doPost()方法：

<span style="font-size:18px;">public class HttpServletDemo extends HttpServlet {/** *  */private static final long serialVersionUID = 4230239235404655360L;public void doGet(HttpServletRequest request, HttpServletResponse response)throws IOException {response.setContentType("text/html;charset=GB2312");PrintWriter printWriter = response.getWriter();// printWriter.print("hello, china");String title = "HelloServlet";String heading1 = "HelloServlet的doGet方法的输出：";printWriter = response.getWriter();printWriter.print("<HTML><HEAD><TITLE>" + title + "</TITLE>");printWriter.print("</HEAD><BODY>");printWriter.print(heading1);printWriter.println("<h1><p>:您好</h1>");printWriter.print("</body></HTML>");printWriter.write("");printWriter.flush();printWriter.close();}public void doPost(HttpServletRequest request, HttpServletResponse response)throws IOException {doGet(request, response);}}</span>

4. 在web.xml中配置servlet

<span style="font-size:18px;"> <servlet>    <servlet-name>TomcatWeb</servlet-name>    <servlet-class>tomcat.servlet.HttpServletDemo</servlet-class>  </servlet>  <servlet-mapping>    <servlet-name>TomcatWeb</servlet-name>    <url-pattern>/servlet/HttpServletDemo</url-pattern>  </servlet-mapping></span>

5. 用配置好的tomcat容器运行该web项目

方式1：右击项目--run as - run on server - 选择配置好的tomcat容器

方式2：右击运行

6. 在浏览器上输入：http://localhost:8080/TomcatWeb/servlet/HttpServletDemo，即可看到

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