利用java的HttpURLConnection和Servlet通信
来源：互联网 发布：阿里云短信 app code 编辑：程序博客网 时间：2024/05/29 19:52
这几天测试Servlet通信，写了一个小程序，通过从Properties文件中读取设定信息，构造Http头，向Servlet发Post请求，并且接收Servlet的结果，下面给出程序的大概结构：import java.net.*;import java.io.*;public class testPost { public static void main() { URL url = null; HttpURLConnection conn = null; try { //构造好这个URL对象，参数就是你要通信的servlet地址，实际测试的时候，//这个URL可以从Properties文件中取得，以增加灵活性 url = new URL("http://localhost/projectname/servletname"); //打开，创建Connection对象conn = (HttpURLConnection)url.openConnection(); //设定请求方式为POSTconn.setRequestMethod("POST");//一定要设为true,因为要发送数据conn.setDoOutput(true);//下面开始设定Http头conn.setRequestProperty("Content-Type","multipart/form-data; boundary=Bounday---");conn.setRequestProperty("Cache-Control","no-cache"); .// 传送送据 OutputStream buf = conn.getOutoutStream(); buf = new BufferedOutputStream(buf); OutputStreamWriter out = new OutputStreamWriter (buf); out.write("这里是要传送的数据")；//比方说如下的格式,当然这是自己规定的格式，这些都可以从配置文件中设定，然后读取//Bounday--- //Content-Disposition: form-data; name="testRequestHeader" // Data = aabbccddeeffgghh //--Bounday--- out.flush();//这个一定要out.clost(); //接收数据 InputStream in = conn.getInputStream(); in = new BufferedOutputStream(buf); Reader rData = new InputStreamReader(in); int c; System.out.println("=====================Result=========================="); while((c=rData.read()) != -1) System.out.print((char)c); System.out.println("==================================================="); in.close(); } catch (Exception e) { e.printStackTrace(); } finally { } }}
