https请求工具类

Posted 2020-08-19 黄小易

import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.lang.reflect.Field;
import java.security.KeyManagementException;
import java.security.NoSuchAlgorithmException;
import java.security.cert.CertificateException;
import java.security.cert.X509Certificate;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import javax.net.ssl.SSLContext;
import javax.net.ssl.SSLException;
import javax.net.ssl.SSLSession;
import javax.net.ssl.SSLSocket;
import javax.net.ssl.TrustManager;
import javax.net.ssl.X509TrustManager;

import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.NameValuePair;
import org.apache.http.ParseException;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.HttpClient;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.conn.scheme.Scheme;
import org.apache.http.conn.ssl.SSLSocketFactory;
import org.apache.http.conn.ssl.X509HostnameVerifier;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.util.EntityUtils;

/**
 * Created by huangjy on 2016-11-10.
 */
public class HttpsTools {


    /**
     * 发送HTTPS POST请求
     *
     * @param
     * @return 返回响应值
     */
    public static String sendHttpsRequestByPost(String url, Map<String, String> params) {
        String responseContent = null;
        HttpClient httpClient = new DefaultHttpClient();
        //创建TrustManager
        X509TrustManager xtm = new X509TrustManager() {
            public void checkClientTrusted(X509Certificate[] chain, String authType) throws CertificateException {
            }

            public void checkServerTrusted(X509Certificate[] chain, String authType) throws CertificateException {
            }

            public X509Certificate[] getAcceptedIssuers() {
                return null;
            }
        };
        //这个好像是HOST验证
        X509HostnameVerifier hostnameVerifier = new X509HostnameVerifier() {
            public boolean verify(String arg0, SSLSession arg1) {
                return true;
            }

            public void verify(String arg0, SSLSocket arg1) throws IOException {
            }

            public void verify(String arg0, String[] arg1, String[] arg2) throws SSLException {
            }

            public void verify(String arg0, X509Certificate arg1) throws SSLException {
            }
        };
        try {
            //TLS1.0与SSL3.0基本上没有太大的差别，可粗略理解为TLS是SSL的继承者，但它们使用的是相同的SSLContext
            SSLContext ctx = SSLContext.getInstance("TLS");
            //使用TrustManager来初始化该上下文，TrustManager只是被SSL的Socket所使用
            ctx.init(null, new TrustManager[]{xtm}, null);
            //创建SSLSocketFactory
            SSLSocketFactory socketFactory = new SSLSocketFactory(ctx);
            socketFactory.setHostnameVerifier(hostnameVerifier);
            //通过SchemeRegistry将SSLSocketFactory注册到我们的HttpClient上
            httpClient.getConnectionManager().getSchemeRegistry().register(new Scheme("https", socketFactory, 443));
            HttpPost httpPost = new HttpPost(url);
            List<NameValuePair> formParams = new ArrayList<NameValuePair>(); // 构建POST请求的表单参数
            for (Map.Entry<String, String> entry : params.entrySet()) {
                formParams.add(new BasicNameValuePair(entry.getKey(), entry.getValue()));
            }
            httpPost.setEntity(new UrlEncodedFormEntity(formParams, "UTF-8"));
            HttpResponse response = httpClient.execute(httpPost);
            HttpEntity entity = response.getEntity(); // 获取响应实体
            if (entity != null) {
                responseContent = EntityUtils.toString(entity, "UTF-8");
            }
        } catch (KeyManagementException e) {
            e.printStackTrace();
        } catch (NoSuchAlgorithmException e) {
            e.printStackTrace();
        } catch (UnsupportedEncodingException e) {
            e.printStackTrace();
        } catch (ClientProtocolException e) {
            e.printStackTrace();
        } catch (ParseException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            // 关闭连接,释放资源
            httpClient.getConnectionManager().shutdown();
        }
        return responseContent;
    }

}