用基本的JS进行Ajax请求

来源：互联网发布：怎么提高淘宝权重编辑：程序博客网时间：2024/05/22 20:19

之前在项目中使用ajax都是通过JQuery的Ajax API来进行的，今天试了一下通过基本的Javascript来进行ajax请求，将代码记录下来：

jsp 页面

进行ajax请求的js 代码，可以附带一些json和xml数据（必须是post方法）

在服务器端的Servlet：

java 代码

package ajax;    import java.io.BufferedReader;  import java.io.IOException;  import java.io.PrintWriter;    import javax.servlet.ServletException;  import javax.servlet.http.HttpServlet;  import javax.servlet.http.HttpServletRequest;  import javax.servlet.http.HttpServletResponse;    public class Test extends HttpServlet {      public void doGet(HttpServletRequest request, HttpServletResponse response)              throws ServletException, IOException {          BufferedReader reader = request.getReader();          String line = null;          while((line = reader.readLine()) != null) {              System.out.println(line);          }          System.out.println("Start writing");          response.setContentType("text/html");          PrintWriter out = response.getWriter();          out.println(");          out.flush();          out.close();      }        @Override      protected void doPost(HttpServletRequest req, HttpServletResponse resp)              throws ServletException, IOException {          doGet(req, resp);      }        }