com.clickntap.api.HttpUtils Maven / Gradle / Ivy

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package com.clickntap.api;

import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.HttpURLConnection;
import java.net.URL;
import java.net.URLConnection;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Map;

import javax.net.ssl.SSLContext;

import org.apache.http.HttpEntity;
import org.apache.http.HttpRequest;
import org.apache.http.NameValuePair;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpHead;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.conn.ssl.NoopHostnameVerifier;
import org.apache.http.conn.ssl.SSLConnectionSocketFactory;
import org.apache.http.conn.ssl.TrustSelfSignedStrategy;
import org.apache.http.entity.ContentType;
import org.apache.http.entity.InputStreamEntity;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.DefaultRedirectStrategy;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.ssl.SSLContextBuilder;

public class HttpUtils {

  public static String get(String url) throws Exception {
    return get(url, new HashMap());
  }

  public static String get(String url, Map headers) throws Exception {
    CloseableHttpClient client = newClient();
    HttpGet request = new HttpGet(url);
    headers(request, headers);
    CloseableHttpResponse response = client.execute(request);
    String responseAsString = response(response);
    response.close();
    client.close();
    return responseAsString;
  }

  public static void post(String url, Map headers, Map params, OutputStream out) throws Exception {
    CloseableHttpClient client = newClient();
    HttpPost request = new HttpPost(url);
    if (params != null) {
      ArrayList postParameters = new ArrayList();
      for (String key : params.keySet()) {
        postParameters.add(new BasicNameValuePair(key, params.get(key)));
      }
      HttpEntity entity = new UrlEncodedFormEntity(postParameters);
      request.setEntity(entity);
    }
    headers(request, headers);
    CloseableHttpResponse response = client.execute(request);
    response.getEntity().writeTo(out);
    response.close();
    client.close();
  }

  public static CloseableHttpClient newClient() throws Exception {
    SSLContext sslContext = SSLContextBuilder.create().loadTrustMaterial(new TrustSelfSignedStrategy()).build();
    return HttpClients.custom().setRedirectStrategy(new DefaultRedirectStrategy()).setSSLSocketFactory(new SSLConnectionSocketFactory(sslContext, new NoopHostnameVerifier())).build();
  }

  public static long size(String url) throws Exception {
    CloseableHttpClient client = newClient();
    HttpHead request = new HttpHead(url);
    CloseableHttpResponse response = client.execute(request);
    long size = Long.parseLong(response.getFirstHeader("Content-Length").getValue());
    response.close();
    client.close();
    return size;
  }

  public static String post(String url, Map headers, Map params) throws Exception {
    CloseableHttpClient client = newClient();
    HttpPost request = new HttpPost(url);
    if (params != null) {
      ArrayList postParameters = new ArrayList();
      for (String key : params.keySet()) {
        postParameters.add(new BasicNameValuePair(key, params.get(key)));
      }
      HttpEntity entity = new UrlEncodedFormEntity(postParameters);
      request.setEntity(entity);
    }
    headers(request, headers);
    CloseableHttpResponse response = client.execute(request);
    String responseAsString = response(response);
    response.close();
    client.close();
    return responseAsString;
  }

  private static void headers(HttpRequest request, Map headers) {
    if (headers == null)
      return;
    for (String key : headers.keySet()) {
      request.addHeader(key, headers.get(key));
    }
  }

  public static String post(String url, Map headers, InputStream in) throws Exception {
    CloseableHttpClient client = newClient();
    HttpPost request = new HttpPost(url);
    if (in != null) {
      HttpEntity entity = new InputStreamEntity(in, ContentType.MULTIPART_FORM_DATA);
      request.setEntity(entity);
    }
    headers(request, headers);
    CloseableHttpResponse response = client.execute(request);
    String responseAsString = response(response);
    response.close();
    client.close();
    return responseAsString;
  }

  public static void post(String url, Map headers, InputStream in, OutputStream out) throws Exception {
    CloseableHttpClient client = newClient();
    HttpPost request = new HttpPost(url);
    if (in != null) {
      HttpEntity entity = new InputStreamEntity(in, ContentType.MULTIPART_FORM_DATA);
      request.setEntity(entity);
    }
    headers(request, headers);
    CloseableHttpResponse response = client.execute(request);
    response.getEntity().writeTo(out);
    response.close();
    client.close();
  }

  public static void get(String url, OutputStream out) throws Exception {
    CloseableHttpClient client = newClient();
    HttpGet request = new HttpGet(url);
    CloseableHttpResponse response = client.execute(request);
    response.getEntity().writeTo(out);
    response.close();
    client.close();
  }

  public static String response(CloseableHttpResponse response) throws Exception {
    String responseAsString = null;
    ByteArrayOutputStream out = new ByteArrayOutputStream();
    response.getEntity().writeTo(out);
    responseAsString = out.toString("UTF-8");
    out.close();
    return responseAsString;
  }

  public static int getFileSize(URL url) {
    URLConnection conn = null;
    try {
      conn = url.openConnection();
      if (conn instanceof HttpURLConnection) {
        ((HttpURLConnection) conn).setRequestMethod("HEAD");
      }
      conn.getInputStream();
      return conn.getContentLength();
    } catch (IOException e) {
      throw new RuntimeException(e);
    } finally {
      if (conn instanceof HttpURLConnection) {
        ((HttpURLConnection) conn).disconnect();
      }
    }
  }

}