Dua cara untuk mengirim permintaan URL untuk mendapatkan nilai pengembalian

Dua metode berikut akan menggunakan Java untuk mengirim permintaan URL dan mendapatkan nilai dikembalikan oleh server.

Metode pertama:

Salinan kode adalah sebagai berikut:

impor org.apache.http.httpentity;

impor org.apache.http.httpresponse;

impor org.apache.http.namevaluepair;

impor org.apache.http.client.httpClient;

impor org.apache.http.client.entity.urlencodedformentity;

impor org.apache.http.client.methods.httppost;

impor org.apache.http.impl.client.defaulthttpClient;

impor org.apache.http.message.basicnamevaluePair;

impor org.apache.http.params.coreconnectionPnames;

impor org.apache.http.util.entityutils;

PublicStatiCStringsEndUrlRequest (StringUrlStr, StringParam1, StringParam2) ThrowsException {

StringTemptr = null;

HttpClientHttpClient = newDefaulthttpClient ();

PropertiesProperties = newProperties ();

Httpentityentity = null;

StringXmlContent = "";

mencoba

{

// atur waktu batas waktu

httpclient.getParams (). setintparameter (coreconnectionpnames.connection_timeout, 20000);

httpclient.getParams (). setParameter (coreconnectionpnames.so_timeout, 20000);

// enkapsulasi parameter yang perlu dilewati

Daftar <namevaluePair> nvps = newArrayList <namevaluePair> ();

nvps.add (newbasicnamevaluePair ("mainMemocode", strmainmemocode));

nvps.add (newbasicnamevaluePair ("recordpassword", strrecordpassword));

// jenis metode permintaan klien

Httpposthttppost = newHttppost (urlstr);

httppost.setentity (newurlencodedformentity (nvps, "gbk"));

HttpresponseSponse = httpclient.execute (httppost);

// Dapatkan nilai tipe konten yang dikembalikan server ke http

tempstr = response.getheaders ("tipe konten") [0] .getValue (). ToString ();

// Dapatkan nilai halaman yang dikembalikan oleh server

entitas = response.getEntity ();

xmlcontent = entityutils.tostring (entitas);

StringstrMessage = null;

System.out.println (XMLContent);

System.out.println (response.getHeaders ("tipe konten") [0] .getValue (). ToString ());

httppost.abort ();

}

Catch (SocketTimeOutExceptione)

{

}

Catch (Exceptionex)

{

Ex.PrintStackTrace ();

}

Akhirnya{

httpclient.getConnectionManager (). shutdown ();

}

Metode kedua:

Salinan kode adalah sebagai berikut:

PublicStatiCStringsEndUrlRequest (StringUrlStr, StringParam1, StringParam2) ThrowsException {

HttpurlConnectionUrl_con = null;

mencoba{

Urlurl = newurl (urlstr);

StringBufferBankXmlBuffer = newstringBuffer ();

// Buat koneksi URL, kirimkan ke data, dan dapatkan hasil pengembalian

HttpurlConnectionConnection = (httpurlConnection) url.openconnection ();

Connection.setRequestMethod ("Post");

Connection.setDoOutput (true);

Connection.setRequestProperty ("agen-pengguna", "DirectClient");

Printwriterout = newPrintWriter (newoutputStreamWriter (connection.getoutputStream (), "gbk"));

out.println (param);

out.close ();

BufferedReaderin = newBufferedReader (newInputStreamReader (koneksi

.getInputStream (), "gbk"));

StringInputline;

while ((inputline = in.readline ())! = null) {

BankXmlBuffer.Append (Inputline);

}

melampirkan();

Tempstr = BankXmlBuffer.ToString ();

}

Catch (Exceptione)

{

System.out.println ("Pengecualian terjadi saat mengirim permintaan mendapatkan!" +E);

e.printstacktrace ();

} Akhirnya{

if (url_con! = null)

url_con.disconnect ();

}

returnmpestr;

}