java实现http协议连接和下载

String currentUrl=“http://www.myWeb.com/login.jsp?userName='Devin'&passWord='mypassword'”; //URL ?后面的内容为HTTP请求的正文URL url = new URL(currentUrl);

 

HttpURLConnection httpurlconnection = url.openConnection();//下面的设置对应HTTP请求中的消息报头

httpurlconnection.setRequestProperty("User-Agent",CommonValues.User_Agent);

httpurlconnection.setRequestProperty("Accept",CommonValues.Accept);

httpurlconnection.setRequestProperty("Accept-Charset",CommonValues.Accept_Charset);

httpurlconnection.setRequestProperty("Accept-Language",CommonValues.Accept_Language);

httpurlconnection.setRequestProperty("Connection",CommonValues.Connection);

httpurlconnection.setRequestProperty("Keep-Alive",CommonValues.Keep_Alive);

httpurlconnection.setConnectTimeout(CommonValues.ConnectionTimeOut);

httpurlconnection.setReadTimeout(CommonValues.ReadTimeOut);

            

httpurlconnection.connect();

           

int responsecode = httpurlconnection.getResponseCode();

            

if(responsecode == HttpURLConnection.HTTP_OK) //对应HTTP响应中状态行的响应码{

　　//操作请求流，这里对应HTTP响应中的响应正文

}

            

if (httpurlconnection != null)

{

   httpurlconnection.disconnect();

}