我试图做POST与HttpURLConnection(我需要使用这种方式，不能使用HttpPost)，我想添加参数的连接，如
post.setEntity(new UrlEncodedFormEntity(nvp));
在哪里
nvp = new ArrayList<NameValuePair>();
有一些数据存储在。我找不到一种方法如何添加这个数组列表到我的HttpURLConnection在这里:
HttpsURLConnection https = (HttpsURLConnection) url.openConnection();
https.setHostnameVerifier(DO_NOT_VERIFY);
http = https;
http.setRequestMethod("POST");
http.setDoInput(true);
http.setDoOutput(true);
出现这种尴尬的https和http组合的原因是不需要验证证书。不过，这不是问题，它可以很好地发布服务器。但我需要它来张贴论点。
什么好主意吗?
重复的免责声明:
早在2012年，我还不知道如何在HTTP POST请求中插入参数。我一直在使用NameValuePair，因为它在教程中。这个问题可能看起来像一个重复的问题，然而，我2012年自己读了另一个问题，它没有使用NameValuePair。事实上，这并没有解决我的问题。
参数到HttpURLConnection使用POST使用NameValuePair输出
try {
URL url = new URL("https://yourUrl.com");
HttpURLConnection conn = (HttpURLConnection) url.openConnection();
conn.setUseCaches(false);
conn.setDoInput(true);
conn.setDoOutput(true);
conn.setRequestMethod("POST");
conn.setRequestProperty("Content-Type", "application/json");
JSONObject data = new JSONObject();
data.put("key1", "value1");
data.put("key2", "value2");
OutputStreamWriter wr = new OutputStreamWriter(conn.getOutputStream());
wr.write(data.toString());
wr.flush();
wr.close();
BufferedReader in = new BufferedReader(new InputStreamReader(conn.getInputStream()));
String inputLine;
StringBuffer response = new StringBuffer();
while ((inputLine = in.readLine()) != null) {
response.append(inputLine);
}
in.close();
System.out.println(response.toString());
} catch (MalformedURLException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} catch (JSONException e) {
e.printStackTrace();
}
如果你不需要ArrayList<NameValuePair>作为参数，这是一个更短的解决方案，它使用Uri构建查询字符串。建筑类:
URL url = new URL("http://yoururl.com");
HttpsURLConnection conn = (HttpsURLConnection) url.openConnection();
conn.setReadTimeout(10000);
conn.setConnectTimeout(15000);
conn.setRequestMethod("POST");
conn.setDoInput(true);
conn.setDoOutput(true);
Uri.Builder builder = new Uri.Builder()
.appendQueryParameter("firstParam", paramValue1)
.appendQueryParameter("secondParam", paramValue2)
.appendQueryParameter("thirdParam", paramValue3);
String query = builder.build().getEncodedQuery();
OutputStream os = conn.getOutputStream();
BufferedWriter writer = new BufferedWriter(
new OutputStreamWriter(os, "UTF-8"));
writer.write(query);
writer.flush();
writer.close();
os.close();
conn.connect();
试试这个:
HttpClient httpclient = new DefaultHttpClient();
HttpPost httppost = new HttpPost("your url");
List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(3);
nameValuePairs.add(new BasicNameValuePair("user_name", "Name"));
nameValuePairs.add(new BasicNameValuePair("pass","Password" ));
nameValuePairs.add(new BasicNameValuePair("user_email","email" ));
httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
// Execute HTTP Post Request
HttpResponse response = httpclient.execute(httppost);
String ret = EntityUtils.toString(response.getEntity());
Log.v("Util response", ret);
您可以根据需要添加任意数量的nameValuePairs。别忘了在名单上提到人数。
在我的情况下，我已经创建了这样的函数，使Post请求字符串url和参数hashmap
public String postRequest( String mainUrl,HashMap<String,String> parameterList)
{
String response="";
try {
URL url = new URL(mainUrl);
StringBuilder postData = new StringBuilder();
for (Map.Entry<String, String> param : parameterList.entrySet())
{
if (postData.length() != 0) postData.append('&');
postData.append(URLEncoder.encode(param.getKey(), "UTF-8"));
postData.append('=');
postData.append(URLEncoder.encode(String.valueOf(param.getValue()), "UTF-8"));
}
byte[] postDataBytes = postData.toString().getBytes("UTF-8");
HttpURLConnection conn = (HttpURLConnection) url.openConnection();
conn.setRequestMethod("POST");
conn.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
conn.setRequestProperty("Content-Length", String.valueOf(postDataBytes.length));
conn.setDoOutput(true);
conn.getOutputStream().write(postDataBytes);
Reader in = new BufferedReader(new InputStreamReader(conn.getInputStream(), "UTF-8"));
StringBuilder sb = new StringBuilder();
for (int c; (c = in.read()) >= 0; )
sb.append((char) c);
response = sb.toString();
return response;
}catch (Exception excep){
excep.printStackTrace();}
return response;
}
通过使用org.apache.http.client.HttpClient，你也可以用下面更容易读懂的方式轻松做到这一点。
HttpClient httpclient = new DefaultHttpClient();
HttpPost httppost = new HttpPost("http://www.yoursite.com/script.php");
在try catch内可以插入
// Add your data
List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(2);
nameValuePairs.add(new BasicNameValuePair("id", "12345"));
nameValuePairs.add(new BasicNameValuePair("stringdata", "AndDev is Cool!"));
httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
// Execute HTTP Post Request
HttpResponse response = httpclient.execute(httppost);
