Java与Http协议(HttpURLConnection和HttpClient) - JAVA

System.out.println("========="+response);
return response;
}else{
return "error";
}
} catch (ClientProtocolException e) {
// TODO Auto-generated catch block
e.printStackTrace();
return "exception";
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
return "exception";
}
}

public String doPost(String username,String password){
//String getUrl = urlAddress + " username="+username+"&password="+password;
HttpPost httpPost = new HttpPost(urlAddress);
List params = new ArrayList();
Nameva luePair pair1 = new BasicNameva luePair("username", username);
Nameva luePair pair2 = new BasicNameva luePair("password", password);
params.add(pair1);
params.add(pair2);

HttpEntity he;
try {
he = new UrlEncodedFormEntity(params, "gbk");
httpPost.setEntity(he);

} catch (UnsupportedEncodingException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}

HttpClient hc = new DefaultHttpClient();
try {
HttpResponse ht = hc.execute(httpPost);
//连接成功
if(ht.getStatusLine().getStatusCode() == HttpStatus.SC_OK){
HttpEntity het = ht.getEntity();
InputStream is = het.getContent();
BufferedReader br = new BufferedReader(new InputStreamReader(is));
String response = "";
String readLine = null;
while((readLine =br.readLine()) != null){
//response = br.readLine();
response = response + readLine;
}
is.close();
br.close();

//String str = EntityUtils.toString(he);
System.out.println("=========&&"+response);
return response;
}else{
return "error";
}
} catch (ClientProtocolException e) {
// TODO Auto-generated catch block
e.printStackTrace();
return "exception";
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
return "exception";
}
}

servlet端json转化：

[java] resp.setContentType("text/json");
resp.setCharacterEncoding("UTF-8");
toDo = new ToDo();
List list = new ArrayList();
list = toDo.queryUsers(mySession);
String body;

//设定JSON
JSONArray array = new JSONArray();
for(UserBean bean : list)
{
JSONObject obj = new JSONObject();
try
{
obj.put("username", bean.getUserName());
obj.put("password", bean.getPassWord());
}catch(Exception e){}
array.add(obj);
}
pw.write(array.toString());
System.out.println(array.toString());

resp.setContentType("text/json");
resp.setCharacterEncoding("UTF-8");
toDo = new ToDo();
List list = new ArrayList();
list = toDo.queryUsers(mySession);
String body;

//设定JSON
JSONArray array = new JSONArray();
for(UserBean bean : list)
{

Java与Http协议(HttpURLConnection和HttpClient) (七)