Httpclient已弃用

Question

我正在使用HTTPclientdatatransfer 开发一个应用程序.由于HTTPClient不推荐使用,我想将网络部分移植到URLConnection.

ConectionHttpClient.java

package conexao;

import java.util.ArrayList;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.URI;

import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.HttpResponse;
import org.apache.http.NameValuePair;
import org.apache.http.conn.params.ConnManagerParams;
import org.apache.http.params.HttpConnectionParams;
import org.apache.http.params.HttpParams;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.client.entity.UrlEncodedFormEntity;

public class ConexaoHttpClient {
    public static final int HTTP_TIMEOUT = 30 * 1000;
    private static HttpClient httpClient;
    private static HttpClient getHttpClient(){
        if (httpClient == null){
            httpClient = new DefaultHttpClient();
            final HttpParams httpParams = httpClient.getParams();
            HttpConnectionParams.setConnectionTimeout(httpParams, HTTP_TIMEOUT);
            HttpConnectionParams.setSoTimeout(httpParams, HTTP_TIMEOUT);
            ConnManagerParams.setTimeout(httpParams, HTTP_TIMEOUT);
        }return httpClient;

    }

public static String executaHttpPost(String url, ArrayList<NameValuePair> parametrosPost) throws Exception{
    BufferedReader bufferedReader = null;
    try{
        HttpClient client = getHttpClient();
        HttpPost httpPost = new HttpPost();
        UrlEncodedFormEntity formEntity = new UrlEncodedFormEntity(parametrosPost);
        httpPost.setEntity(formEntity);
        HttpResponse httpResponse = client.execute(httpPost);
        bufferedReader = new BufferedReader(new InputStreamReader(httpPost.getEntity().getContent()));
        StringBuffer stringBuffer = new StringBuffer(" ");
        String line = " ";
        String LS = System.getProperty("line.separator");
        while ((line = bufferedReader.readLine()) != null){
            stringBuffer.append(line + LS); 
        }bufferedReader.close();


    String resultado = stringBuffer.toString();
    return resultado;
}finally{
    if (bufferedReader != null){
        try{
            bufferedReader.close();
        }catch(IOException e){
            e.printStackTrace();
        }
    }
}

}
}

MainActivity.java

package com.app.arts;

import java.util.ArrayList;

import org.apache.http.NameValuePair;
import org.apache.http.message.BasicNameValuePair;

import conexao.ConexaoHttpClient;
import android.app.Activity;
import android.app.AlertDialog;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;

public cla`enter code here`ss MainActivity extends Activity {

    EditText editEmail, editSenha;
    Button btnEntrar, btnEsqueciSenha, btnCadastrar;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

    editEmail = (EditText)findViewById(R.id.editEmail);
    editSenha = (EditText)findViewById(R.id.editSenha);
    btnEntrar = (Button)findViewById(R.id.btnEntrar);
    btnEsqueciSenha = (Button)findViewById(R.id.btnEsqueciSenha);
    btnCadastrar = (Button)findViewById(R.id.btnCadastrar);

    btnEntrar.setOnClickListener(new View.OnClickListener() {


        public void onClick(View v){

        String urlPost="http://192.168.25.5/arts/admin/login.php";
        ArrayList<NameValuePair> parametrosPost = new ArrayList<NameValuePair>();
        parametrosPost.add(new BasicNameValuePair("email", editEmail.getText().toString()));
        parametrosPost.add(new BasicNameValuePair("senha", editSenha.getText().toString()));
        String respostaRetornada = null;
        try{
         respostaRetornada = ConexaoHttpClient.executaHttpPost(urlPost, parametrosPost);
         String resposta = respostaRetornada.toString();
         resposta = resposta.replaceAll("//s+", "");
         if (resposta.equals("1"))
           mensagemExibir("Login", "Usuario Valido");
         else
           mensagemExibir("Login", "Usuario Invalido");  
        }catch(Exception erro){
          Toast.makeText(MainActivity.this, "Erro: " +erro, Toast.LENGTH_LONG);
         }  
       }    
         public void mensagemExibir(String titulo, String texto){
      AlertDialog.Builder mensagem = new AlertDialog.Builder(MainActivity.this);
      mensagem.setTitle(titulo);
      mensagem.setMessage(texto);
      mensagem.setNeutralButton("OK", null);
      mensagem.show();


     }


    });
}
}

Answer 1

我使用 HttpURLConnection 在 Android 中执行此类操作。我使用下面的函数来读取网页的内容。我希望这可以帮助你。

public String GetWebPage(String sAddress) throws IOException
{
    StringBuilder sb = new StringBuilder();

    BufferedInputStream bis = null;
    URL url = new URL(sAddress);
    HttpURLConnection con = (HttpURLConnection) url.openConnection();
    int responseCode;

    con.setConnectTimeout( 10000 );
    con.setReadTimeout( 10000 );

    responseCode = con.getResponseCode();

    if ( responseCode == 200)
    {
      bis = new java.io.BufferedInputStream(con.getInputStream());
      BufferedReader reader = new BufferedReader(new InputStreamReader(bis, "UTF-8"));
      String line = null;

      while ((line = reader.readLine()) != null)
        sb.append(line);

      is.close();
    }

    return sb.toString();
}