Android添加Header请求参数实例，java响应header请求实现demo

1、首先添加AsyncHttpClient.jar包到libs文件夹下

2、初始化请求类以及响应回调类

private AsyncHttpClient client;
private AsyncHttpResponseHandler asyncHttpResponseHandler;

3、网络权限

<!-- 网络链接 -->
<uses-permission android:name="android.permission.INTERNET" />

4、实例化响应类

/*** 设置请求响应*/
private void setListener(final Context context) {asyncHttpResponseHandler = new AsyncHttpResponseHandler() {@Overridepublic void onSuccess(int i, Header[] headers, byte[] bytes) {String jsonStr = new String(bytes);Log.i("lgq","sss===="+jsonStr);}@Overridepublic void onFailure(int i, Header[] headers, byte[] bytes, Throwable throwable) {String jsonStr = new String(bytes);Log.i("lgq","sssbbb===="+jsonStr);}};
}

5、开始请求，添加了header请求参数和常用请求参数

注：如果是HttpURLConnection请求，添加header请求参数方法是：

conn.setRequestProperty("headkey","headervalue");

public void httpheader(){client = new AsyncHttpClient();client.addHeader("headkey", "22aa");//添加header请求参数方法RequestParams requestParams = new RequestParams();requestParams.add("password", "123");//添加常用请求参数方法String strUrl = "http://192.168.0.110:8080/servletDemo/testa?method=login&username=xzgkof&";client.post(this, strUrl, requestParams, asyncHttpResponseHandler);//开始请求
}

6、Android 请求结果：

02-22 11:09:19.492 21796-21796/com.tianxin.httpheader I/lgq: sss===={"msg":["登录成功!锤子进来"]}

二、附java响应实现代码

   /**
   * json格式化公用方法
   * @param key
   * @param list
   * @return
   */
   public JSONObject formatJsonData(String key,List<?> list){
       JSONObject json = new JSONObject();
       JSONArray ja = JSONArray.fromObject(list);
   json.element(key, ja);
       return json;
   }

   /**
   * @param request
   * @param response
   * @throws ServletException
   * @throws IOException
   */
   public void login(HttpServletRequest request, HttpServletResponse response)
           throws ServletException, IOException{
               String usname = request.getParameter("username");//获取常用方法请求参数
               String psword = request.getParameter("password");

               System.out.println("hhhhhhhhhhhhhhhhh========"+request.getHeader("headkey"));//获取header请求参数
               HttpSession session = request.getSession();
               List<Object> msgList = new ArrayList<Object>();

//               if (session.isNew()) {
//                   msgList.add("isNew==="+session.getId());
//               }else {
//                   msgList.add("==="+session.getId());
//               }

               if(usname != null || psword != null){

                   if(session.getAttribute("usname") != null){
                       if(session.getAttribute("usname").equals(usname)
                       &&session.getAttribute("psword").equals(psword)){
                           okreString ="登录成功";
                           msgList.add("登录成功!上面水电费");

                       }else{
                           msgList.add("登录失败!用户名密码不可为空！");
                           okreString ="登录失败了";
                       }

                   }else{
                       if(usname.equals("xzgkof")&& psword.equals("123")){
                           msgList.add("登录成功!锤子进来");
                           session.setAttribute("usname", usname);
                                   session.setAttribute("psword", psword);
                                   session.setMaxInactiveInterval(30*60);//设置单位为秒，设置为-1永不过期
                                   okreString ="登录成功111";
                               }else{
                                   msgList.add("登录失败!用户名或密码错误!");
                                   okreString ="登录失败了1111";
                                   //session.setMaxInactiveInterval(1);
                                   //request.getRequestDispatcher("/login.jsp").forward(request, response);
                               }
                   }
               }else{
                   msgList.add("用户名，密码不可为空!");

               }
               List<Object> msgList22 = new ArrayList<Object>();
               msgList22.add("你的过第三方");
               response.getWriter().print(formatJsonData("msg",msgList));
//               response.getWriter().print(createJSONObject());
   }