Java访问https接口实现

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        用两种方式分别实现了，第一种是jdk原生的，代码稍微多点，第二种是基于httpclient4版本的。在我的机器上，访问同一个接口原生的性能要好很多（前者900ms，后者5.7s左右），httpclient主要性能消耗在"HttpResponse res = client.execute(post);"，大约占总执行时间的90%。

 

 

private static final String METHOD_POST = "POST";
    private static final String DEFAULT_CHARSET = "utf-8";

    public static String doPost(String url, String params, String charset, int connectTimeout, int readTimeout) throws Exception {
        String ctype = "application/json;charset=" + charset;
        byte[] content = {};
        if(params != null){
            content = params.getBytes(charset);
        }

        return doPost(url, ctype, content, connectTimeout, readTimeout);
    }
    public static String doPost(String url, String ctype, byte[] content,int connectTimeout,int readTimeout) throws Exception {
        HttpsURLConnection conn = null;
        OutputStream out = null;
        String rsp = null;
        try {
            try{
                SSLContext ctx = SSLContext.getInstance("TLS");
                ctx.init(new KeyManager[0], new TrustManager[] {new DefaultTrustManager()}, new SecureRandom());
                SSLContext.setDefault(ctx);

                conn = getConnection(new URL(url), METHOD_POST, ctype);
                conn.setHostnameVerifier(new HostnameVerifier() {
                    @Override
                    public boolean verify(String hostname, SSLSession session) {
                        return true;
                    }
                });
                conn.setConnectTimeout(connectTimeout);
                conn.setReadTimeout(readTimeout);
            }catch(Exception e){
                log.error("GET_CONNECTOIN_ERROR, URL = " + url, e);
                throw e;
            }
            try{
                out = conn.getOutputStream();
                out.write(content);
                rsp = getResponseAsString(conn);
            }catch(IOException e){
                log.error("REQUEST_RESPONSE_ERROR, URL = " + url, e);
                throw e;
            }

        }finally {
            if (out != null) {
                out.close();
            }
            if (conn != null) {
                conn.disconnect();
            }
        }

        return rsp;
    }

    private static class DefaultTrustManager implements X509TrustManager {

        @Override
        public void checkClientTrusted(X509Certificate[] arg0, String arg1) throws CertificateException {}

        @Override
        public void checkServerTrusted(X509Certificate[] arg0, String arg1) throws CertificateException {}

        @Override
        public X509Certificate[] getAcceptedIssuers() {
            return null;
        }

    }

    private static HttpsURLConnection getConnection(URL url, String method, String ctype)
            throws IOException {
        HttpsURLConnection conn = (HttpsURLConnection) url.openConnection();
        conn.setRequestMethod(method);
        conn.setDoInput(true);
        conn.setDoOutput(true);
        conn.setRequestProperty("Accept", "text/xml,text/javascript,text/html");
        conn.setRequestProperty("User-Agent", "stargate");
        conn.setRequestProperty("Content-Type", ctype);
        return conn;
    }

    protected static String getResponseAsString(HttpURLConnection conn) throws IOException {
        String charset = getResponseCharset(conn.getContentType());
        InputStream es = conn.getErrorStream();
        if (es == null) {
            return getStreamAsString(conn.getInputStream(), charset);
        } else {
            String msg = getStreamAsString(es, charset);
            if (StringUtils.isEmpty(msg)) {
                throw new IOException(conn.getResponseCode() + ":" + conn.getResponseMessage());
            } else {
                throw new IOException(msg);
            }
        }
    }

    private static String getStreamAsString(InputStream stream, String charset) throws IOException {
        try {
            BufferedReader reader = new BufferedReader(new InputStreamReader(stream, charset));
            StringWriter writer = new StringWriter();

            char[] chars = new char[256];
            int count = 0;
            while ((count = reader.read(chars)) > 0) {
                writer.write(chars, 0, count);
            }

            return writer.toString();
        } finally {
            if (stream != null) {
                stream.close();
            }
        }
    }

    private static String getResponseCharset(String ctype) {
        String charset = DEFAULT_CHARSET;

        if (!StringUtils.isEmpty(ctype)) {
            String[] params = ctype.split(";");
            for (String param : params) {
                param = param.trim();
                if (param.startsWith("charset")) {
                    String[] pair = param.split("=", 2);
                    if (pair.length == 2) {
                        if (!StringUtils.isEmpty(pair[1])) {
                            charset = pair[1].trim();
                        }
                    }
                    break;
                }
            }
        }

        return charset;
    }

 

 

public static JSONObject post(String url, String json) {
        HttpClient client = new DefaultHttpClient();
        client = WebClientDevWrapper.wrapClient(client);
        HttpPost post = new HttpPost(url);
        JSONObject response = null;
        try {
            StringEntity s = new StringEntity(json);
            s.setContentEncoding("UTF-8");
            s.setContentType("application/json");
            post.setEntity(s);

            Long startTime = System.currentTimeMillis();
            HttpResponse res = client.execute(post);
            System.out.println(System.currentTimeMillis() - startTime);
            if (res.getStatusLine().getStatusCode() == HttpStatus.SC_OK) {
                HttpEntity entity = res.getEntity();
                String charset = EntityUtils.getContentCharSet(entity);
                if(charset == null){
                    charset = "utf-8";
                }
                response = new JSONObject(new JSONTokener(
                        new InputStreamReader(entity.getContent(), charset)));
            }
        } catch (Exception e) {
            throw new RuntimeException(e);
        }
        return response;
    }

    public static class WebClientDevWrapper {
        public static HttpClient wrapClient(HttpClient base) {
            try {
                SSLContext ctx = SSLContext.getInstance("TLS");
                X509TrustManager tm = new X509TrustManager() {
                    @Override
                    public X509Certificate[] getAcceptedIssuers() {
                        return null;
                    }

                    @Override
                    public void checkClientTrusted(
                            java.security.cert.X509Certificate[] chain,
                            String authType)
                            throws java.security.cert.CertificateException {

                    }

                    @Override
                    public void checkServerTrusted(
                            java.security.cert.X509Certificate[] chain,
                            String authType)
                            throws java.security.cert.CertificateException {

                    }
                };
                ctx.init(null, new TrustManager[] { tm }, null);
                SSLSocketFactory ssf = new SSLSocketFactory(ctx, SSLSocketFactory.ALLOW_ALL_HOSTNAME_VERIFIER);
                ClientConnectionManager ccm = base.getConnectionManager();
                SchemeRegistry sr = ccm.getSchemeRegistry();
                sr.register(new Scheme("https", 443, ssf));
                return new DefaultHttpClient(ccm, base.getParams());
            } catch (Exception ex) {
                ex.printStackTrace();
                return null;
            }
        }
    }

           

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