import org.apache.http.Header;
import org.apache.http.HttpEntity;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.entity.ContentType;
import org.apache.http.entity.StringEntity;
import org.apache.http.entity.mime.MultipartEntityBuilder;
import org.apache.http.entity.mime.content.FileBody;
import org.apache.http.entity.mime.content.StringBody;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClientBuilder;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.ssl.SSLContextBuilder;
import org.apache.http.ssl.TrustStrategy;
import org.apache.http.util.EntityUtils;
import java.io.File;
import java.io.IOException;
import java.security.cert.CertificateException;
import java.security.cert.X509Certificate;
import java.util.Enumeration;
import java.util.Hashtable;
public class HttpClientUtil {
public static Hashtable postHttp(String uri, String s, Hashtable head) {
CloseableHttpClient httpclient = null;
CloseableHttpResponse response = null;
try {
httpclient = getHttpClient(uri);
HttpPost httppost = new HttpPost(uri);
StringEntity body = new StringEntity(s, "utf-8");
body.setContentEncoding("UTF-8");
body.setContentType("text/html");
httppost.setEntity(body);
Enumeration en = head.keys();
while (en.hasMoreElements()) {
String ok = en.nextElement().toString();
httppost.setHeader(ok, head.get(ok).toString());
}
response = httpclient.execute(httppost);
return getHttpResponse(response);
} catch (Exception e) {
e.printStackTrace();
return new Hashtable();
} finally {
try {
if (response != null) {
response.close();
}
if (httpclient != null) {
httpclient.close();
}
} catch (IOException e) {
e.printStackTrace();
}
}
}
public static Hashtable getHttp(String uri, Hashtable head) {
CloseableHttpClient httpclient = null;
CloseableHttpResponse response = null;
try {
httpclient = getHttpClient(uri);
HttpGet httpget = new HttpGet(uri);
Enumeration en = head.keys();
while (en.hasMoreElements()) {
String ok = en.nextElement().toString();
httpget.setHeader(ok, head.get(ok).toString());
}
response = httpclient.execute(httpget);
return getHttpResponse(response);
} catch (Exception e) {
e.printStackTrace();
return new Hashtable();
} finally {
try {
if (response != null) {
response.close();
}
if (httpclient != null) {
httpclient.close();
}
} catch (IOException e) {
e.printStackTrace();
}
}
}
private static CloseableHttpClient getHttpClient(String uri) throws Exception {
if (uri.contains("https:")) {
HttpClientBuilder httpClientBuilder = HttpClientBuilder.create();
SSLContext sslContext = new SSLContextBuilder().loadTrustMaterial(null, new TrustStrategy() {
public boolean isTrusted(X509Certificate[] chain, String authType) throws CertificateException {
return true;
}
}).build();
httpClientBuilder.setSSLContext(sslContext);
return httpClientBuilder.build();
} else {
return HttpClients.createDefault();
}
}
private static Hashtable getHttpResponse(CloseableHttpResponse response) throws IOException {
Hashtable ht = new Hashtable();
ht.put("StatusCode", response.getStatusLine().getStatusCode());
HttpEntity entity = response.getEntity();
if (entity != null) {
ht.put("Entity", EntityUtils.toString(entity, "UTF-8"));
for (Header hd : response.getAllHeaders()) {
ht.put(hd.getName(), hd.getValue());
}
}
return ht;
}
private void upload() {
CloseableHttpClient httpclient = HttpClients.createDefault();
try {
FileBody bin = new FileBody(new File("F:\\image\\sendpix0.jpg"));
StringBody comment = new StringBody("A binary file of some kind", ContentType.TEXT_PLAIN);
HttpEntity reqEntity = MultipartEntityBuilder.create().addPart("bin", bin).addPart("comment", comment).build();
httppost.setEntity(reqEntity);
System.out.println("executing request " + httppost.getRequestLine());
CloseableHttpResponse response = httpclient.execute(httppost);
try {
System.out.println("----------------------------------------");
System.out.println(response.getStatusLine());
HttpEntity resEntity = response.getEntity();
if (resEntity != null) {
System.out.println("Response content length: " + resEntity.getContentLength());
}
EntityUtils.consume(resEntity);
} finally {
response.close();
}
} catch (ClientProtocolException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} finally {
try {
httpclient.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
}