7.1.4 Android HTTP请求方式:HttpClient

ity = loginResponse.getEntity(); loginhtml = EntityUtils.toString(entity); // 获取响应的cookie值 cookie = loginResponse.getFirstHeader("Set-Cookie").getValue(); System.out.println("cookie= " + cookie); } // 第二步:模拟登录 // 发送Post请求,禁止重定向 HttpPost httpPost = new HttpPost(true_url); httpPost.getParams().setParameter(ClientPNames.HANDLE_REDIRECTS, false); // 设置Post提交的头信息的参数 httpPost.setHeader("User-Agent", "Mozilla/5.0 (Windows NT 6.3; WOW64; Trident/7.0; rv:11.0) like Gecko"); httpPost.setHeader("Referer", true_url); httpPost.setHeader("Cookie", cookie); // 设置请求数据 List<NameValuePair> params = new ArrayList<NameValuePair>(); params.add(new BasicNameValuePair("__VIEWSTATE", getViewState(loginhtml)));// __VIEWSTATE参数，如果变化可以动态抓取获取 params.add(new BasicNameValuePair("Button1", "")); params.add(new BasicNameValuePair("hidPdrs", "")); params.add(new BasicNameValuePair("hidsc", "")); params.add(new BasicNameValuePair("lbLanguage", "")); params.add(new BasicNameValuePair("RadioButtonList1", "%D1%A7%C9%FA")); params.add(new BasicNameValuePair("txtUserName", user)); params.add(new BasicNameValuePair("TextBox2", key)); params.add(new BasicNameValuePair("txtSecretCode", "")); // ( ╯□╰ )逗比正方,竟然不需要验证码 // 设置编码方式,响应请求,获取响应状态码: httpPost.setEntity(new UrlEncodedFormEntity(params, "gb2312")); HttpResponse response = new DefaultHttpClient().execute(httpPost); int Status = response.getStatusLine().getStatusCode(); if(Status == 200)return Status; System.out.println("Status= " + Status); // 重定向状态码为302 if (Status == 302 || Status == 301) { // 获取头部信息中Location的值 location = response.getFirstHeader("Location").getValue(); System.out.println(location); // 第三步:获取管理信息的主页面 // Get请求 HttpGet httpGet = new HttpGet(ip_url + location);// 带上location地址访问 httpGet.setHeader("Referer", true_url); httpGet.setHeader("Cookie", cookie); // 主页的html mainhtml = ""; HttpResponse httpResponseget = new DefaultHttpClient() .execute(httpGet); if (httpResponseget.getStatusLine().getStatusCode() == 200) { HttpEntity entity = httpResponseget.getEntity(); mainhtml = EntityUtils.toString(entity); } } return Status;} 4.使用HttpPut发送Put请求示例代码如下：public static int PutActCode(String actCode, String licPlate, Context mContext) { int resp = 0; String cookie = (String) SPUtils.get(mContext, "session", ""); HttpPut httpPut = new HttpPut(PUTACKCODE_URL); httpPut.setHeader("Cookie", cookie); try { List<NameValuePair> params = new ArrayList<NameValuePair>(); params.add(new BasicNameValuePair("activation_code", actCode)); params.add(new BasicNameValuePair("license_plate", licPlate)); httpPut.setEntity(new UrlEncodedFormEntity(params, "UTF-8")); HttpResponse course_response = new DefaultHttpClient().execute(httpPut); if (course_response.getStatusLine().getStatusCode() == 200) { HttpEntity entity2 = course_response.getEntity(); JSONObject jObject = new JSONObject(EntityUtils.toString(entity2)); resp = Integer.parseInt(jObject.getString("status_code")); return resp; } } catch (Exception e) { e.printStackTrace(); } return resp;}本节小结：好的，本节关于Android HTTP的第二种请求方式:HttpClient就到这里，下节开始我们来学习XML以及Json的解析，本节就到这里，谢谢~