JAVA调用web接口demo

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.io.UnsupportedEncodingException;
import java.net.HttpURLConnection;
import java.net.URL;

public class A {
	public static void main(String[] args) {
		HttpURLConnection httpcon;
		//接口地址
		String url = "http://192.168.3.61:8080/getDataByBdhOrSfz2";
		// 参数
		String data = "{\"bdh\":\"2015102858463188\",\"sfz\":\"120101190000000000\"}";
		String result = null;
		try {
			// Connect
			httpcon = (HttpURLConnection) ((new URL(url).openConnection()));
			httpcon.setDoOutput(true);
			httpcon.setRequestProperty("Content-Type", "application/json");
			httpcon.setRequestProperty("Accept", "application/json");
			// 请求方式
			httpcon.setRequestMethod("POST");
			httpcon.connect();

			// Write
			OutputStream os = httpcon.getOutputStream();
			BufferedWriter writer = new BufferedWriter(new OutputStreamWriter(
					os, "UTF-8"));
			writer.write(data);
			writer.close();
			os.close();

			// Read
			BufferedReader br = new BufferedReader(new InputStreamReader(
					httpcon.getInputStream(), "UTF-8"));

			String line = null;
			StringBuilder sb = new StringBuilder();

			while ((line = br.readLine()) != null) {
				sb.append(line);
			}

			br.close();
			result = sb.toString();

		} catch (UnsupportedEncodingException e) {
			e.printStackTrace();
		} catch (IOException e) {
			e.printStackTrace();
		}
	}

}