<script type="text/javascript" src="js/AjaxRequest.js"></script> 

<script type="text/javascript">

	var xhr = Ajax();

	var url = "IsExistUserAjaxServlet";

	var params = "name=张三&age=12&sex=woman";

	/* GET */

	var des_url_get = url + "?nocache=" + new Date().getTime() + "&" + params;

	xhr.get(des_url_get, function(data) {

		console.log(data);

	});

	/* POST*/

	/* var des_url_post = url + "?nocache=" + new Date().getTime();

	xhr.post(des_url_post, params, function(data) {

		console.log(data);

	}); */

</script>

package com.gordon.servlet;

import java.io.IOException;

import javax.servlet.ServletConfig;

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(name = "IsExistUserAjaxServlet", urlPatterns = { "/IsExistUserAjaxServlet" })

public class IsExistUserAjaxServlet extends HttpServlet {

	private static final long serialVersionUID = 1L;

	public IsExistUserAjaxServlet() {

		super();

	}

	public void init(ServletConfig config) throws ServletException {

	}

	protected void doGet(HttpServletRequest request, HttpServletResponse response)

			throws ServletException, IOException {

		request.setCharacterEncoding("UTF-8");

		response.setContentType("text/text;charset=utf-8");

		String name = request.getParameter("name");

		String sex = request.getParameter("sex");

		int age = Integer.valueOf(request.getParameter("age"));

		System.out.println(name + ", " + sex + ", " + age);

		response.getWriter().println("name:" + name + "age:" + age + "sex:" + sex);

	}

	protected void doPost(HttpServletRequest request, HttpServletResponse response)

			throws ServletException, IOException {

		doGet(request, response);

	}

}