Java使用org.apache.http的包访问对方URL地址并发送数据(非OkHttp)
对于https协议的网址直接跳过验证访问
import com.alibaba.fastjson.JSONObject;
import org.apache.http.HttpResponse;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.config.Registry;
import org.apache.http.config.RegistryBuilder;
import org.apache.http.conn.socket.ConnectionSocketFactory;
import org.apache.http.conn.ssl.SSLConnectionSocketFactory;
import org.apache.http.conn.ssl.SSLSocketFactory;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.impl.conn.PoolingHttpClientConnectionManager;
import org.apache.http.message.BasicHeader;
import org.apache.http.util.EntityUtils;
import javax.net.ssl.SSLContext;
import javax.net.ssl.TrustManager;
import javax.net.ssl.X509TrustManager;
import java.net.ConnectException;
import java.security.KeyManagementException;
import java.security.NoSuchAlgorithmException;
import java.security.cert.CertificateException;
public class NetworkUtils {
//发送Get请求
public static JSONObject doGetByHttpClient(String url) throws ConnectException {
System.out.println("url =" + url);
try {
//如果是https 用这种方式
CloseableHttpClient httpClient = null;
if (url.toLowerCase().startsWith("https://")) {
System.out.println("use ssl");
httpClient = getHttpsClient();
} else {
//如果是http 用这种方式
System.out.println("use nonssl");
httpClient = HttpClients.createDefault();
}
HttpGet httpGet = new HttpGet(url);
httpGet.addHeader("Content-Type", "application/json; charset=UTF-8");
HttpResponse response = httpClient.execute(httpGet);
int statusCode = response.getStatusLine().getStatusCode();
if (statusCode != 200) {
throw new ConnectException("连接服务器失败！");
}
String s = EntityUtils.toString(response.getEntity());
JSONObject json = JSONObject.parseObject(s);
return json;
} catch (Exception e) {
e.printStackTrace();
System.out.println(" ===== doPostByHttpClient() ERROR ===== ");
throw new ConnectException(e.getMessage());
} finally {
System.clearProperty("javax.net.debug");
}
}
//发送Post请求
public static JSONObject doPostByHttpClient(String url, String data) throws ConnectException {
System.out.println("url =" + url);
System.out.println("data =" + data);
try {
//如果是https 用这种方式
CloseableHttpClient httpClient = null;
if (url.toLowerCase().startsWith("https://")) {
System.out.println("use ssl");
httpClient = getHttpsClient();
} else {
//如果是http 用这种方式
System.out.println("use nonssl");
httpClient = HttpClients.createDefault();
}
HttpPost httpPost = new HttpPost(url);
//添加响应头
httpPost.addHeader("Content-Type", "application/json; charset=UTF-8");
if(data != null){
StringEntity se = new StringEntity(data, "UTF-8");
se.setContentType("text/json");
se.setContentEncoding(new BasicHeader("Content-Type", "application/json; charset=UTF-8"));
httpPost.setEntity(se);
}
HttpResponse response = httpClient.execute(httpPost);
int statusCode = response.getStatusLine().getStatusCode();
if (statusCode != 200) {
throw new ConnectException("连接服务器失败！");
}
String s = EntityUtils.toString(response.getEntity());
JSONObject json = JSONObject.parseObject(s);
return json;
} catch (Exception e) {
e.printStackTrace();
System.out.println(" ===== doPostByHttpClient() ERROR ===== ");
throw new ConnectException(e.getMessage());
} finally {
System.clearProperty("javax.net.debug");
}
}
public static CloseableHttpClient getHttpsClient() throws KeyManagementException, NoSuchAlgorithmException {
//采用绕过验证的方式处理https请求
SSLContext sslcontext = createIgnoreVerifySSL();
//设置协议http和https对应的处理socket链接工厂的对象
Registry<ConnectionSocketFactory> socketFactoryRegistry = RegistryBuilder.<ConnectionSocketFactory>create()
.register("https", new SSLConnectionSocketFactory(sslcontext, SSLSocketFactory.ALLOW_ALL_HOSTNAME_VERIFIER))
.build();
PoolingHttpClientConnectionManager connManager = new PoolingHttpClientConnectionManager(socketFactoryRegistry);
//创建自定义的httpclient对象
CloseableHttpClient client = HttpClients.custom().setConnectionManager(connManager).build();
return client;
}
public static SSLContext createIgnoreVerifySSL() throws NoSuchAlgorithmException, KeyManagementException {
SSLContext sslContext = SSLContext.getInstance("TLS");
X509TrustManager trustManager = new X509TrustManager() {
@Override
public void checkClientTrusted(
java.security.cert.X509Certificate[] paramArrayOfX509Certificate,
String paramString) throws CertificateException {
}
@Override
public void checkServerTrusted(
java.security.cert.X509Certificate[] paramArrayOfX509Certificate,
String paramString) throws CertificateException {
}
@Override
public java.security.cert.X509Certificate[] getAcceptedIssuers() {
return null;
}
};
sslContext.init(null, new TrustManager[] {
trustManager }, null);
return sslContext;
}
}