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();
}