简单HTTP接口服务客户端DEMO（CQYHT）

Demo程序：

package org.acooly.onlycall.service;

import java.io.InputStream;
import java.io.UnsupportedEncodingException;
import java.net.HttpURLConnection;
import java.net.URL;
import java.net.URLEncoder;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;

import org.apache.commons.io.IOUtils;

public class ServiceClientDemo {

	private static final String DEFAULT_ENCODING = "UTF-8";
	private static final String SERVICE_ENDPOINT = "http://域名/service";

	public static void main(String[] args) throws Exception {
		ServiceClientDemo demo = new ServiceClientDemo();
		demo.testCqyhtService();
	}

	public void testCqyhtService() {

		Map<String, String> parameters = new HashMap<String, String>();
		parameters.put("Action", "CALL");
		parameters.put("PhoneNo", "一号通号码");
		parameters.put("Credential", "XXXXXX");
		parameters.put("CallerNo", "主叫");
		parameters.put("CalledNos", "被叫");

		String queryString = getCanonicalizedQueryString(parameters, false);
		String requestUrl = SERVICE_ENDPOINT + "?" + queryString;
		System.out.println("Request: \n" + requestUrl);
		String response = httpSimpleRequest("GET", requestUrl, null);
		System.out.println("Response Body: \n" + response);

	}

	protected String httpSimpleRequest(String method, String requestUrl, Map<String, String> headers) {
		HttpURLConnection conn = null;
		InputStream in = null;
		String result = null;
		try {
			URL url = new URL(requestUrl);
			conn = (HttpURLConnection) url.openConnection();
			conn.setRequestMethod(method);
			conn.setDoInput(true);
			conn.setDoOutput(true);
			if (headers != null) {
				for (Map.Entry<String, String> entry : headers.entrySet()) {
					conn.addRequestProperty(entry.getKey(), URLEncoder.encode(entry.getValue(), "UTF-8"));
				}
			}
			int status = conn.getResponseCode();
			System.out.println("Response status: " + status);
			in = conn.getErrorStream();
			if (in != null) {
				result = IOUtils.toString(in);
			}
			in = conn.getInputStream();
			if (in != null) {
				result = IOUtils.toString(in);
			}
		} catch (Exception e) {
			System.err.println(e.getMessage());
		} finally {
			IOUtils.closeQuietly(in);
		}
		return result;
	}

	protected String getCanonicalizedQueryString(Map<String, String> parameters, boolean encoding) {
		StringBuilder builder = new StringBuilder();
		Iterator<Map.Entry<String, String>> pairs = parameters.entrySet().iterator();
		while (pairs.hasNext()) {
			Map.Entry<String, String> pair = pairs.next();
			String key = pair.getKey();
			String value = pair.getValue();
			builder.append(encoding ? urlEncode(key, false) : key);
			builder.append("=");
			builder.append(encoding ? urlEncode(value, false) : value);
			if (pairs.hasNext()) {
				builder.append("&");
			}
		}
		return builder.toString();
	}

	protected String urlEncode(String value, boolean path) {
		try {
			String encoded = URLEncoder.encode(value, DEFAULT_ENCODING).replace("+", "%20").replace("*", "%2A").replace("%7E", "~");
			if (path) {
				encoded = encoded.replace("%2F", "/");
			}

			return encoded;
		} catch (UnsupportedEncodingException ex) {
			throw new RuntimeException(ex);
		}
	}
}

运行结果：

Request: 
http://域名/service?Action=CALL&CalledNos=被叫&Credential=XXXXXX&CallerNo=主叫&PhoneNo=一号通号码
Response status: 200
Response Body: 
<?xml version="1.0" encoding="UTF-8"?>
<Result>
	<Code>0001</Code>
	<Message>一号通号码不合法或用户被禁用</Message>
</Result>