java编写Http消息头
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package tk.xdatk.util; import tk.xdatk.model.HTTPParam; import java.io.BufferedReader;import java.io.IOException;import java.io.InputStreamReader;import java.io.PrintWriter;import java.net.URL;import java.net.URLConnection;import java.net.URLEncoder;import java.util.List; /** * Created by XdaTk on 2014/12/21. * <p/> * HTTP请求工具类 */public class HTTPSend { /** * 发送get请求 * * @param url 请求地址 * @param list 请求参数 * * @return 请求结果 * * @throws IOException */ public static String sendGet(String url, List<HTTPParam> list) throws IOException { StringBuffer buffer = new StringBuffer(); //用来拼接参数 StringBuffer result = new StringBuffer(); //用来接受返回值 URL httpUrl = null; //HTTP URL类 用这个类来创建连接 URLConnection connection = null; //创建的http连接 BufferedReader bufferedReader = null; //接受连接受的参数 //如果存在参数,我们才需要拼接参数 类似于 localhost/index.html?a=a&b=b if (list.size() > 0) { for (int i = 0; i < list.size(); i++) { buffer.append(list.get(i).getKey()).append("=").append(URLEncoder.encode(list.get(i).getValue(), "utf-8")); //如果不是最后一个参数,不需要添加& if ((i + 1) < list.size()) { buffer.append("&"); } } url = url + "?" + buffer.toString(); } //创建URL httpUrl = new URL(url); //建立连接 connection = httpUrl.openConnection(); connection.setRequestProperty("accept", "text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8"); connection.setRequestProperty("connection", "keep-alive"); connection.setRequestProperty("user-agent", "Mozilla/5.0 (Windows NT 6.1; WOW64; rv:34.0) Gecko/20100101 Firefox/34.0"); connection.connect(); //接受连接返回参数 bufferedReader = new BufferedReader(new InputStreamReader(connection.getInputStream())); String line; while ((line = bufferedReader.readLine()) != null) { result.append(line); } bufferedReader.close(); return result.toString(); } /** * 发送Post请求 * * @param url 请求地址 * @param list 请求参数 * * @return 请求结果 * * @throws IOException */ public static String sendPost(String url, List<HTTPParam> list) throws IOException { StringBuffer buffer = new StringBuffer(); //用来拼接参数 StringBuffer result = new StringBuffer(); //用来接受返回值 URL httpUrl = null; //HTTP URL类 用这个类来创建连接 URLConnection connection = null; //创建的http连接 PrintWriter printWriter = null; BufferedReader bufferedReader; //接受连接受的参数 //创建URL httpUrl = new URL(url); //建立连接 connection = httpUrl.openConnection(); connection.setRequestProperty("accept", "text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8"); connection.setRequestProperty("connection", "keep-alive"); connection.setRequestProperty("user-agent", "Mozilla/5.0 (Windows NT 6.1; WOW64; rv:34.0) Gecko/20100101 Firefox/34.0"); connection.setDoOutput(true); connection.setDoInput(true); printWriter = new PrintWriter(connection.getOutputStream()); if (list.size() > 0) { for (int i = 0; i < list.size(); i++) { buffer.append(list.get(i).getKey()).append("=").append(URLEncoder.encode(list.get(i).getValue(), "utf-8")); //如果不是最后一个参数,不需要添加& if ((i + 1) < list.size()) { buffer.append("&"); } } } printWriter.print(buffer.toString()); printWriter.flush(); connection.connect(); //接受连接返回参数 bufferedReader = new BufferedReader(new InputStreamReader(connection.getInputStream())); String line; while ((line = bufferedReader.readLine()) != null) { result.append(line); } bufferedReader.close(); return result.toString(); }}
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