JAVA调用HTTPS方法

JAVA使用POST调用HTTPS 编码为UTF8

package com.smartid.util;

import java.io.BufferedReader;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.StringWriter;
import java.net.HttpURLConnection;
import java.net.URL;
import java.security.SecureRandom;
import java.security.cert.X509Certificate;

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

import org.apache.commons.lang.StringUtils;

public class HttpsHelper {

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

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

	return doPost(url, ctype, content, 30000, 30000);
}

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) {
			throw e;
		}
		try {
			out = conn.getOutputStream();
			out.write(content);
			rsp = getResponseAsString(conn);
		} catch (IOException 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) {
	}

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

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

/**
 * 从输入流中读取数据
 * 
 * @param inStream
 * @return
 * @throws Exception
 */
public static String getStreamAsString(InputStream inStream)
		throws Exception {
	ByteArrayOutputStream outStream = new ByteArrayOutputStream();
	byte[] buffer = new byte[1024];
	int len = 0;
	while ((len = inStream.read(buffer)) != -1) {
		outStream.write(buffer, 0, len);
	}
	byte[] data = outStream.toByteArray();
	outStream.close();
	inStream.close();
	String result = new String(data, "UTF-8");// 将二进制流转为String

	return result;
}

/*
 * 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;
}

}