最近对比了Android 中使用的JDK的HttpURLConnection和Apache的HttpClien访问网络资源，总结了Http协议的相关资料。如下：
JDK的HttpURLConnection:
（1）get请求
public String executeHttpGet(){
String result = null;
URL url = null;
HttpURLConnection connection;
InputStreamReader in =null;
try{
url = new URL("http://10.0.2.2.:8888/data/get/?token=alexzhou");
connection =(HttpURLConnection)url.openConnection();
in = new InputStream(connection.getInputStream());
BufferedReader bufferedReader = new BufferedReader(in);
StringBuffer str = new StringBuffer();
String line =null;
while((line = bufferedReader.readLine()) != null){
str.append(line);
}
}catch(Exception e){
e.printStackTrace();
}finally{
if(connection != null){
connection.disconnect();
} if(in != null){
try{
in.close();
}catch(IOException e){
e.printStackTrace();
}
}
}
return result;
}
(2)post请求
public String executeHttpPost(){
String result = null;
URL url =null;
HttpURLConnection connection = null;
InputStream in = null;
try{
url = new URL("http://10.0.2.2:8888/data/post");
connection =(HttpURLConnection)url.openConnection();
connection.setDoInput(true);
connection.setDoOutput(true);
connection.setRequestMethod("POST");
connection.setRequestProperty("Content-Type","application/x-www-form-urlencoded");
connection.setRequestProperty("Charset","utf-8");
DataOutputStream dop = new DataOutputStream(connection.getOutputStream());
dop.writeBytes("token=alexzhou");
dop.flush();
dop.close();
in = new InputStreamReader(connection.getInputStream());
BufferedReader bufferedReader = new BufferedReader(in);
StringBuffer str = new StringBuffer();
String line = null;
while((line = bufferedReader.readLine()) != null){
str.append(line);
}
result = str.toString();
}catch(Exception e){
e.printStackTrace()
}finally{
if(connection != null){
connection.disconnect();
}if(in != null){
try{
in.close();
}catch(IOException e){
e.printStackTrace();
}
}
}
return result;
}
如果参数中有中文的话，可以使用下面的方式进行编码解码：
(1)get请求
public String executeGet(){
String result = null;
BufferedReader reader = null;
try{
HttpClient client = new DefaultHttpClient();
HttpGet request = new HttpGet();
request.setURL(new URL("http://10.0.2.2:8888/data/get/?token=alexzhou"));
HttpResponse respone =client.execute(request);
reader = new BufferedReader(new InputStreamReader(response.getEntity().getContent()));
StringBuffer strBuffer = new StringBuffer("");
String line = null;
while ((line = reader.readLine()) != null) {
strBuffer.append(line);
}
result = strBuffer.toString();
} catch (Exception e) {
e.printStackTrace();
} finally {
if (reader != null) {
try {
reader.close();
reader = null;
} catch (IOException e) {
e.printStackTrace();
}
}
}
return result;
}
(2)post方式
public String executePost() { String result = null;
BufferedReader reader = null; try {
HttpClient client = new DefaultHttpClient();
HttpPost request = new HttpPost();
request.setURI(new URI("http://10.0.2.2:8888/data/post/"));
List<NameValuePair> postParameters = new ArrayList<NameValuePair>();
postParameters.add(new BasicNameValuePair("token", "alexzhou"));
UrlEncodedFormEntity formEntity = new UrlEncodedFormEntity(postParameters);
request.setEntity(formEntity);
HttpResponse response = client.execute(request);
reader = new BufferedReader(new InputStreamReader(response.getEntity().getContent()));
StringBuffer strBuffer = new StringBuffer(""); String line = null;
while ((line = reader.readLine()) != null) { strBuffer.append(line); } result = strBuffer.toString(); } catch (Exception e) { e.printStackTrace(); } finally { if (reader != null) { try { reader.close(); reader = null; } catch (IOException e) { e.printStackTrace(); } } } return result; }