HttpURLConnection跨域、跨应用访问

URL url = new URL("https://www.douban.com/accounts/login");

HttpURLConnection httpUrlConnection =(HttpURLConnection) url.openConnection();

httpUrlConnection.setDoOutput(true);

// 设置是否从httpUrlConnection读入，默认情况下是true;

httpUrlConnection.setDoInput(true);

// Post 请求不能使用缓存

httpUrlConnection.setUseCaches(false);

// 设定传送的内容类型是可序列化的java对象

// (如果不设此项,在传送序列化对象时,当WEB服务默认的不是这种类型时可能抛java.io.EOFException)

httpUrlConnection.setRequestProperty("Content-type", "application/x-java-serialized-object");

// 设定请求的方法为"POST"，默认是GET

httpUrlConnection.setRequestMethod("POST");

httpUrlConnection.setRequestProperty("Accept","image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, application/x-shockwave-flash, application/vnd.ms-excel, application/vnd.ms-powerpoint, application/msword, application/x-silverlight, */*");

httpUrlConnection.setRequestProperty("Referer","http://www.douban.com/accounts/login");

httpUrlConnection.setRequestProperty("Accept-Language","zh-cn");

httpUrlConnection.setRequestProperty("Content-Type","application/x-www-form-urlencoded");

httpUrlConnection.setRequestProperty("Accept-Encoding","gzip, deflate");

httpUrlConnection.setRequestProperty("User-Agent","Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; InfoPath.1; CIBA)");

httpUrlConnection.setRequestProperty("Host","www.douban.com");

httpUrlConnection.setRequestProperty("Content-Length","139");

httpUrlConnection.setRequestProperty("Connection","Keep-Alive");

httpUrlConnection.setRequestProperty("Cache-Control","no-cache");

httpUrlConnection.connect();

OutputStream outStrm = httpUrlConnection.getOutputStream();

// DataOutputStream out = new DataOutputStream(connection

// .getOutputStream());

// // The URL-encoded contend

// // 正文，正文内容其实跟get的URL中'?'后的参数字符串一致

// String content = "firstname=" + URLEncoder.encode("一个大肥人", "utf-8");

// // DataOutputStream.writeBytes将字符串中的16位的unicode字符以8位的字符形式写道流里面

// out.writeBytes(content);

//

// //现在通过输出流对象构建对象输出流对象，以实现输出可序列化的对象。

String content="source=simple&redir=http%3A%2F%2Fmovie.douban.com%2Fchart&form_email=email&form_password=password&user_login=%E7%99%BB%E5%BD%95";

outStrm.write(content.getBytes());

outStrm.flush();

outStrm.close(); // flush and close

InputStream inStrm = httpUrlConnection.getInputStream();

BufferedReader br = new BufferedReader(new InputStreamReader(inStrm,"gbk"));

String temp="";

while((temp=br.readLine())!=null){

System.out.println(temp);

}