servlet测试
首先，打开myeclipse，file|new|Dynamic Web Project 会出现一个对话框，在Project name的文本框中输入：FirstServlet；然后点击finish，完成创建。
注意配置tomcat，点击工具栏的Window/Preferences/MyEclipse/Servers/Tomcat/Tomcat 7.x,然后选中你的tomcat，Enable，确定；
其次，展开项目，在src下新建New|Servlet，弹出对话框，在Java package中输入：cc.openhome(包名)，className：HelloServlet，点击finish完成，如下：
添加蓝色部分
package cc.openhome;
import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
@WebServlet("/hello.view")
public class HelloServlet extends HttpServlet { //1.继承HttpServlet
public HelloServlet() { super(); }
public void destroy() { super.destroy(); }
public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { //2.重新定义doGet
response.setContentType("text/html;charset=UTF-8"); //3.设置响应类型
PrintWriter out = response.getWriter(); //4.取得响应输出对象
String name=request.getParameter("name"); //5.取得请求参数
out.println("<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01 Transitional//EN\">");
out.println("<HTML>");
out.println("<HEAD><TITLE>A Servlet</TITLE></HEAD>");
out.println("<BODY>");
out.println("<h1>Hello！"+name+"</h1>"); //6.数据输出到前端
out.print("This is ");
out.print(this.getClass());
out.println(", using the GET method");
out.println(" </BODY>");
out.println("</HTML>");
out.flush(); out.close();
}
public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
response.setContentType("text/html");
PrintWriter out = response.getWriter();
out.println("<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01 Transitional//EN\">");
out.println("<HTML>"); out.println(" <HEAD><TITLE>A Servlet</TITLE></HEAD>");
out.println(" <BODY>");
out.print(" This is ");
out.print(this.getClass());
out.println(", using the POST method");
out.println(" </BODY>");
out.println("</HTML>");
out.flush();
out.close();
}
public void init() throws ServletException { // Put your code here }
}
在HelloServlet.java 上右击选择 Run as / MyEclipse Server Application启动tomcat；
在浏览器地址栏输入http://localhost:8080/FirstServlet/hello.view?name=nihao会出现如下结果：
至于@WebServlet("/hello.view") 这表示URL是/hello.view，就会由HelloServlet.java来处理请求。有三种方式可以设置处理Servlet请求的方式，请参考：
http://e.dangdang.com/html/reader.html;jsessionid=9798112171FADBF7AC2707188C1DF13F?productId=1900280541&bookUid=bb.135546768822699731