網路程式設計基礎，模擬get post請求

網路程式設計基礎，模擬get post請求

package com.zcwfeng.java.test.netsocket;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLConnection;
import java.util.List;
import java.util.Map;

/**
 * Description:<br/>
 * Copyright (C), 2005-2015,David<br/>
 * Thies program is protected by copyright<br/>
 * David. Program name<br/>
 * Date:2015年5月19日<br/>
 * 
 * @author David zcwfeng@126.com<br/>
 * @version 1.0
 *
 */
public class TestGetPost {

    public static String sendGet(String url, String param) {
        String result = "";
        BufferedReader bf = null;
        String urlName = url + "?" + param;
        try {
            URL realUrl = new URL(urlName);
            URLConnection conn = realUrl.openConnection();
            conn.setRequestProperty("accept", "*/*");
            conn.setRequestProperty("connection", "keep-alive");
            conn.setRequestProperty("User-Agent",
                    "Mozilla/5.0 (Windows NT 6.1; WOW64; rv:38.0) Gecko/20100101 Firefox/38.0");
            conn.connect();
            Map<String, List<String>> map = conn.getHeaderFields();

            for (String key : map.keySet()) {
                System.out.println(key + "---->" + map.get(key));
            }

            bf = new BufferedReader(
                    new InputStreamReader(conn.getInputStream()));
            String line;
            while ((line = bf.readLine()) != null) {
                result += "\n" + line;
            }
        } catch (MalformedURLException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            if (bf != null) {
                try {
                    bf.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }
        return result;
    }

    public static String sendPost(String url, String param) {
        String result = "";
        PrintWriter out = null;
        BufferedReader bf = null;
        try {
            URL realUrl = new URL(url);
            URLConnection conn = realUrl.openConnection();
            conn.setRequestProperty("accept", "*/*");
            conn.setRequestProperty("connection", "keep-alive");
            conn.setRequestProperty("User-Agent",
                    "Mozilla/5.0 (Windows NT 6.1; WOW64; rv:38.0) Gecko/20100101 Firefox/38.0");
            conn.setDoOutput(true);
            conn.setDoInput(true);

            out = new PrintWriter(conn.getOutputStream());
            // 傳送引數
            out.print(param);
            out.flush();
            bf = new BufferedReader(
                    new InputStreamReader(conn.getInputStream()));
            String line;
            while ((line = bf.readLine()) != null) {
                result += "\n" + line;
            }
        } catch (MalformedURLException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            try {
                if (out != null)
                    out.close();
                if (bf != null)
                    bf.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
        return result;
    }

    public static void main(String[] args) {
        String s = TestGetPost.sendGet(
                "http://blog.csdn.net/tjy1985/article/details/7893247", null);
        System.out.println(s);
        String s1 = TestGetPost
                .sendPost(
                        "http://baike.baidu.com/link",
                        "url=NvbjOHw-70YYeKdNfExBl4owaDO1IGZK9-6nCFSaf9-HGfPaK6BAtUAT5O7BdvW1AhaTgDh1AcZQdyGXw_3VOK");
        System.out.println(s1);
    }
}