HttpClient 之 发送Https请求

HttpClient包是一个优秀的Http请求的开源jar。

本文Http工具类的封装基于HttpClient，封装后的工具类支持Https请求。

但是由于项目的需要快速的实现，以下代码还可能会有点过时，但是要是可行的，并且相对比较简单。

1.实现一个SSLClient的客户端

import org.apache.http.conn.ClientConnectionManager;
import org.apache.http.conn.scheme.Scheme;
import org.apache.http.conn.scheme.SchemeRegistry;
import org.apache.http.conn.ssl.SSLSocketFactory;
import org.apache.http.impl.client.DefaultHttpClient;

import javax.net.ssl.SSLContext;
import javax.net.ssl.TrustManager;
import javax.net.ssl.X509TrustManager;
import java.security.cert.CertificateException;
import java.security.cert.X509Certificate;

public class SSLClient extends DefaultHttpClient {

    public SSLClient() throws Exception{
        super();
        SSLContext ctx = SSLContext.getInstance("TLS");
        X509TrustManager tm = new X509TrustManager() {
            @Override
            public void checkClientTrusted(X509Certificate[] chain,
                                           String authType) throws CertificateException {
            }
            @Override
            public void checkServerTrusted(X509Certificate[] chain,
                                           String authType) throws CertificateException {
            }
            @Override
            public X509Certificate[] getAcceptedIssuers() {
                return null;
            }
        };
        ctx.init(null, new TrustManager[]{tm}, null);
        SSLSocketFactory ssf = new SSLSocketFactory(ctx, SSLSocketFactory.ALLOW_ALL_HOSTNAME_VERIFIER);
        ClientConnectionManager ccm = this.getConnectionManager();
        SchemeRegistry sr = ccm.getSchemeRegistry();
        sr.register(new Scheme("https", 443, ssf));
    }
}

2.HttpClientUtils工具类

import com.google.common.base.Charsets;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.entity.StringEntity;
import org.apache.http.util.EntityUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public class HttpClientUtil {

    public static final Logger logger = LoggerFactory.getLogger(HttpClientUtil.class);

    public static String doPost(String url, String json) {
        HttpClient httpClient;
        HttpPost httpPost;
        String result = null;
        try {
            httpClient = new SSLClient();
            httpPost = new HttpPost(url);
            StringEntity entity = new StringEntity(json, Charsets.UTF_8);//解决中文乱码问题
            entity.setContentEncoding("UTF-8");
            entity.setContentType("application/json");
            httpPost.setEntity(entity);
            HttpResponse response = httpClient.execute(httpPost);
            if (response != null) {
                HttpEntity resEntity = response.getEntity();
                if (resEntity != null) {
                    result = EntityUtils.toString(resEntity, Charsets.UTF_8);
                }
            }
        } catch (Exception e) {
            logger.error("调用访问https工具类, 抛错：", e);
        }
        return result;
    }
}

http://www.cnblogs.com/stevendes/p/5971706.html