一、首先angularJs实现跨域请求java思路

　　首先我先介绍一下Html端（前端），然后介绍一下后端java（后端采用MVC模式）。

二、$Http跨域请求方式跨域请求

　　前端代码：

 　　后端代码,关于

package Serlet;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;import Tools.A;public class B extends HttpServlet {        public void doGet(HttpServletRequest request, HttpServletResponse response)            throws ServletException, IOException {        doPost(request,response);    }    public void doPost(HttpServletRequest request, HttpServletResponse response)            throws ServletException, IOException {        //http://127.0.0.1:8080/A/B?id=1&name=张三      //这个是访问路径加参数        //博客园老牛大讲堂 　　　　　　//下面加的头部是必须的，这是要求谁可以请求，谁不能请求        response.setHeader("Access-Control-Allow-Origin","*");        response.setHeader("Access-Control-Allow-Methods", "POST, GET, PUT, OPTIONS, DELETE");          response.setHeader("Access-Control-Max-Age", "3600");          response.setHeader("Access-Control-Allow-Headers", "x-requested-with, Content-Type");          response.setHeader("Access-Control-Allow-Credentials", "true");      //博客园老牛大讲堂        String id=new String(request.getParameter("id").getBytes("ISO-8859-1"),"GBK");        String name=new String(request.getParameter("name").getBytes("ISO-8859-1"),"GBK");        System.out.println("用户的id是："+id+"他的名字是："+name);        //博客园老牛大讲堂        String jsoncallback = "{\"firstName\":\"Brett\"}";//模拟一个固定的json数据，将来要用第三方jar包进行包装。        PrintWriter out = response.getWriter();        out.println(jsoncallback);        out.flush();        out.close();            }}