java https请求

1. 核心代码

HttpsPost.java

import java.io.BufferedReader;
import java.io.ByteArrayOutputStream;
import java.io.DataOutputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.UnsupportedEncodingException;
import java.net.URL;
import java.security.KeyManagementException;
import java.security.NoSuchAlgorithmException;
import java.security.cert.CertificateException;
import java.security.cert.X509Certificate;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

import javax.net.ssl.HostnameVerifier;
import javax.net.ssl.HttpsURLConnection;
import javax.net.ssl.SSLContext;
import javax.net.ssl.SSLSession;
import javax.net.ssl.TrustManager;
import javax.net.ssl.X509TrustManager;

public class HttpsPost {

    private static class TrustAnyTrustManager implements X509TrustManager {

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

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

        public X509Certificate[] getAcceptedIssuers() {
            return new X509Certificate[] {};
        }
    }

    private static class TrustAnyHostnameVerifier implements HostnameVerifier {
        public boolean verify(String hostname, SSLSession session) {
            return true;
        }
    }

    /**
     * post方式请求服务器(https协议)
     * 
     * @param url
     *            请求地址
     * @param content
     *            参数
     * @param charset
     *            编码
     * @return
     * @throws NoSuchAlgorithmException
     * @throws KeyManagementException
     * @throws IOException
     */
    public ByteArrayOutputStream post(String url, String content, String charset)
            throws NoSuchAlgorithmException, KeyManagementException,
            IOException {
        HttpsURLConnection conn = sendPost(url, content, charset);
        InputStream is = conn.getInputStream();

        try {
            if (is != null) {
                ByteArrayOutputStream outStream = new ByteArrayOutputStream();
                byte[] buffer = new byte[1024];
                int len = 0;
                while ((len = is.read(buffer)) != -1) {
                    outStream.write(buffer, 0, len);
                }
                is.close();
                return outStream;
            }
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            if (is != null) {
                is.close();
            }
        }
        return null;
    }

    public void post(String url, String content, String charset, String filePath)
            throws NoSuchAlgorithmException, KeyManagementException,
            IOException {
        HttpsURLConnection conn = sendPost(url, content, charset);
        InputStream is = null;
        FileOutputStream fs = null;
        try {
            is = conn.getInputStream();
            String filename = conn.getHeaderField("Content-Disposition");
            String regex = ".+filename=\"(.+?)\"";
            Pattern pattern = Pattern.compile(regex);
            Matcher matcher = pattern.matcher(filename);
            if (matcher.matches()) {
                if (is != null) {
                    fs = new FileOutputStream(new File(filePath
                            + matcher.group(1)));
                    byte[] buffer = new byte[2048];
                    int len = 0;
                    while ((len = is.read(buffer)) != -1) {
                        fs.write(buffer, 0, len);
                    }
                }
            }
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            if (is != null) {
                is.close();
            }
            if (fs != null) {
                fs.close();
            }
        }
    }

    public HttpsURLConnection sendPost(String url, String content,
            String charset) throws NoSuchAlgorithmException,
            KeyManagementException, IOException {
        SSLContext sc = SSLContext.getInstance("SSL");
        sc.init(null, new TrustManager[] { new TrustAnyTrustManager() },
                new java.security.SecureRandom());
        URL console = new URL(url);
        HttpsURLConnection conn = (HttpsURLConnection) console.openConnection();
        conn.setSSLSocketFactory(sc.getSocketFactory());
        conn.setHostnameVerifier(new TrustAnyHostnameVerifier());
        conn.setDoOutput(true);
        conn.connect();
        DataOutputStream out = new DataOutputStream(conn.getOutputStream());
        out.write(content.getBytes(charset));
        // 刷新、关闭
        out.flush();
        out.close();
        return conn;
    }

    public String getResult(String url) {
        String result = "";
        try {
            HttpsURLConnection conn = sendPost(url, "", "UTF-8");
            InputStream in = conn.getInputStream();
            if (in != null) {
                BufferedReader br = new BufferedReader(
                        new InputStreamReader(in));
                String line;
                while ((line = br.readLine()) != null) {
                    result += line;
                }
                in.close();
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
        try {
            result = new String(result.getBytes(), "UTF-8");
        } catch (UnsupportedEncodingException e) {
            e.printStackTrace();
        }
        return result;
    }

}

2. 使用方法

HttpsPost httpsPost = new HttpsPost();
String result = httpsPost.getResult("https://ip:port/publicKey?userid=" + MD5Util.string2MD5("test"));
System.out.println(result);

返回结果：

{"success":true,"msg":"626002365e48146a0063b7cb1b7f470e"}