URLConnection的GET方法与POST方法，HttpClient的GET方法与POST方法

URLConnection的GET方法与POST方法

GET方法

代码如下：

String urlstring = "http://localhost:8080/MyserverTest/Test?name=zhaoliu&password=12";                try {                    URL url = new URL(urlstring);                    URLConnection connect = url.openConnection();                    HttpURLConnection httpconnection =(HttpURLConnection)connect;                    //设置接收服务器的类型为GET                    httpconnection.setConnectTimeout(30000);                    httpconnection.setReadTimeout(30000);                    httpconnection.setRequestMethod("GET");//用GET方法去接收服务器发来的数据。                                                         //设置接收的数据类型                    httpconnection.setRequestProperty("Accept-Charset", "utf-8");                    // 设置可以接受序列化的java对象                    httpconnection.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");                    //获得http状态码若为200说明接通正常                    int code =httpconnection.getResponseCode();                    if(code==HttpsURLConnection.HTTP_OK){                        //建立接受数据流                        BufferedReader br=new BufferedReader(new InputStreamReader(httpconnection.getInputStream()));                        String line =br.readLine();                        while(line!=null){                            System.out.println(line);                            line =br.readLine();                        }                    }                } catch(SocketTimeoutException e){                    System.out.println("获取数据超时");                } catch(ConnectException e){                    System.out.println("网络连接超时");                }catch(MalformedURLException e) {                    e.printStackTrace();                } catch (IOException e) {                    e.printStackTrace();                }

POST方法

String urlstring = "http://localhost:8080/MyserverTest/Test";                try {                    URL url = new URL(urlstring);                    URLConnection connect = url.openConnection();                    HttpURLConnection httpconnection =(HttpURLConnection)connect;                    //设置接收服务器的类型为GET                    httpconnection.setConnectTimeout(30000);                    httpconnection.setReadTimeout(30000);                    //设置请求的方法是POST,默认是GET。                    httpconnection.setRequestMethod("POST");                                                            //设置接收的数据类型                    httpconnection.setRequestProperty("Accept-Charset", "utf-8");                    // 设置可以接受序列化的java对象                    httpconnection.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");                    //获得http状态码若为200说明接通正常                    httpconnection.setDoOutput(true);//设置向服务器发送数据是允许的，在post方法中这是必须为true                    httpconnection.setDoInput(true);//设置可读取服务器的返回值，默认为true，可以不用设置                    httpconnection.setUseCaches(false);//post方法不允许使用缓存                    String s = "name=zhansan&password=123";                    httpconnection.getOutputStream().write(s.getBytes());//设置输出流                    int code =httpconnection.getResponseCode();//获得http状态码                    if(code==HttpsURLConnection.HTTP_OK){//如果连接成功                        //建立接受数据流                        BufferedReader br=new BufferedReader(new InputStreamReader(httpconnection.getInputStream()));                        String line =br.readLine();                        while(line!=null){                            System.out.println(line);                            line =br.readLine();                        }                    }                } catch(SocketTimeoutException e){                    System.out.println("获取数据超时");                } catch(ConnectException e){                    System.out.println("网络连接超时");                }catch(MalformedURLException e) {                    e.printStackTrace();                } catch (IOException e) {                    e.printStackTrace();                }

HttpClient的GET方法与POST方法

GET

   HttpClient client = new DefaultHttpClient();            String URLString = "http://192.168.0.43:8080/www/MyserverTest?name=zhaoliu&password=1234";            HttpGet get=new HttpGet(URLString);//设置为get方法            get.setHeader("Content-Type", "application/x-www-form-urlencoded; charset=UTF-8");            //设置服务器接收后数据的读取方式为utf8            try {                HttpResponse response=client.execute(get);//执行get方法得到服务器的返回的所有数据都在response中                StatusLine statusLine=response.getStatusLine();//httpClient访问服务器返回的表头，包含http状态码                int code=statusLine.getStatusCode();//得到状态码                if(code== HttpURLConnection.HTTP_OK){                    HttpEntity entity=response.getEntity();//得到数据的实体                    InputStream is=entity.getContent();//得到输入流                    BufferedReader br=new BufferedReader(new InputStreamReader(is));                    String line=br.readLine();                    while(line!=null){                       Log.d("aaaaaaaaaa",line);                        line=br.readLine();                    }                }            } catch (ClientProtocolException e1) {                e1.printStackTrace();            } catch (IOException e1) {                e1.printStackTrace();            }

POST方法

 HttpClient client = new DefaultHttpClient();            String URLString = "http://192.168.0.43:8080/www/MyserverTest?name=zhaoliu&password=12";            HttpPost post =new HttpPost(URLString);            NameValuePair pair1 =new BasicNameValuePair("name", "zhaoliu");            NameValuePair pair2 =new BasicNameValuePair("password", "12");            ArrayList<NameValuePair> array = new ArrayList<>();            array.add(pair1);            array.add(pair2);            try {                post.setEntity(new UrlEncodedFormEntity(array, "UTF-8"));                post.setHeader("Content-Type", "application/x-www-form-urlencoded; charset=UTF-8");                HttpResponse request = client.execute(post);                int code= request.getStatusLine().getStatusCode();                if(code==200){                    HttpEntity entity=request.getEntity();                    InputStream is =entity.getContent();                    BufferedReader br =new BufferedReader(new InputStreamReader(is));                    String line =br.readLine();                    while(line!=null){                        System.out.println(line);                        line =br.readLine();                    }                }            } catch (UnsupportedEncodingException e1) {                e1.printStackTrace();            } catch (IOException e1) {                e1.printStackTrace();            }