urlconnection example

Import Org.junit.test;public class Testurl {@Testpublic void Readurl () throws Exception{url url = new URL ("Http://localhos T:8088/gress/data/reportdata_201401.xml?A=b "); System.out.println (Url.getprotocol ()); System.out.println (Url.gethost ()); System.out.println (Url.getport ()); System.out.println (Url.getpath ()); System.out.println (Url.getfile ()); System.out.println (Url.getref ()); System.out.println (Url.getquery ()); URLConnection urlc

");Conn.setrequestproperty ("User-agent","Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1) ");To send a POST request, you must set the following two linesConn.setdooutput (TRUE);Conn.setdoinput (TRUE);Gets the output stream corresponding to the URLConnection objectout = new PrintWriter (Conn.getoutputstream ());Send Request parametersOut.print (param);Buffer for flush output streamOut.flush ();Defines the response of the BufferedReader input st

The students who use URLConnection to crawl should use this right from the start. OK, back to the chase ...In the content of Chinese, English has been normal display, there will still be some Chinese or English garbled, this is why? This problem has been hovering in the heart ... Real TM's Egg hurts ....There is a solution on the Internet, in fact, this with you to start learning with the use of Java information.Most of the online code is as follows:B

Import Org.junit.test;public class Testurl {@Testpublic void Readurl () throws Exception{url url = new URL ("Http://localhos T:8088/gress/data/reportdata_201401.xml?a=b "); System.out.println (Url.getprotocol ()); System.out.println (Url.gethost ()); System.out.println (Url.getport ()); System.out.println (Url.getpath ()); System.out.println (Url.getfile ()); System.out.println (Url.getref ()); System.out.println (Url.getquery ()); URLConnection urlc

Create a web project under myeclipse named URL. Create a new welcome. jsp under webroot. The code in the body tag is: name= Create a package under SRC and write the urlconnectionsendpostrequest class. The Code is as follows; public class URLConnectionSendPostRequest {public static void main(String[] args) throws Exception {String s=sendPost("http://localhost:8080/url/welcome.jsp","name=tompass=1234");System.out.println(s);}public static String sendPost(String url,String param) throws Exception{

)); String str; while ((Str=br.readline ())!=null) { response.append (str); } Br.close (); Is.close ();return response.tostring ();Two. HttpGet PackageSource: Static Publicstring HttpGet (string Url,map headers) {Try { //Open ConnectionURLConnection connection=Newurl (url). OpenConnection (); //set the request header if(headers!=NULL) {object[] objects=Headers.entryset (). ToArray (); for(Object o:ob

UrlPackage Org.urldemo;Import Java.io.InputStream;Import Java.net.URL;Import Java.util.Scanner;public class Urldemo {public static void Main (string[] args) throws exception{URL url = new URL ("http", "www.hut.edu.cn", "/cn/xxgk/xxgk.asp");InputStream input = Url.openstream ();Scanner scan = new Scanner (input);Scan.usedelimiter ("\ n");while (Scan.hasnext ()) {System.out.println (Scan.next ());}}}Run Result: The displayed content is HTML code.The content downloaded in the above program is all t

number of bytes that the thread has downloaded Public intlength; PublicDownthread (intStartpos,intcurrentpartsize,randomaccessfile Currentpart) { This. startpos =startpos; This. currentpartsize =currentpartsize; This. Currentpart =Currentpart;} Public voidrun () {Try{URL URL=NewURL (path); HttpURLConnection Conn=(HttpURLConnection) url.openconnection (); Conn.setconnecttimeout (5*1000); Conn.setrequestmethod ("GET"); Conn.addrequestproperty ("Accept", "Image/gif,image/jpeg,image/pjpeg,image/pjp

the input stream into the buffer while (len = in.read (buffer) > 0) { os.write (buffer, 0, Len); } In.close (); Os.close (); } Download via URLConnection /** * Download Network file * @author Liu Song * @date 2015-12-30 pm 3:27:19 * @throws Exception / private static void Downloadremotefile () throws exception{ url url = new URL ("https://ss0.bdstatic.com/5aV1bjqh_Q23odCf/static/ Superman/img/logo/bd_logo1_31bdc765.png ");

Close_wait Description: http://blog.csdn.net/talent210/article/details/65434677 httpclient Improper use of Httpclien will produce a large number of close_wait Workaround: First, the client actively shut down the connection 1, use shutdown parameter

JDK documentation rarely introduces the use of proxy servers. It is said that jdk5.0 seems to have added this content. In fact, it is very easy to use the proxy server, as long as you add the followingCodeYou can: Properties prop =System.

Import java.net. *; Import Java. io. *; import sun. misc. *; public class geturl { Public static void main (string URL) { system. out. println (geturl (URL, "", ""); } Public static string encode (string source) { base64encoder ENC = new sun.

　Access to the network requires internet access: Android.permission.INTERNETuse URLConnection to request a URL address for content://1. Creating a URL objecturl url = new URL (url_str);//2. getting a URLConnection objecthttpurlconnection connection =

) { e2.printstacktrace (); } } In Java. Close is the meaning of closing. such as Session.close (); It means to close the session and free up memory.There are also commonly used links to the database connection After use, that is, the end of a function code , at the same time write Connection.close (); free memory6.new// to turn a string into a URL object NewFor example, there are now two classes, T1 and T

Python decorator use example and actual application example, python example Test 1 Deco is running, but myfunc is not running Copy codeThe Code is as follows:Def deco (func ):Print 'before func'Return func Def myfunc ():Print 'myfunc () called'Myfunc = deco (myfunc) Test 2 Call myfunc in the required deco to executeCopy codeThe Code is as follows:Def deco (func

Network multiline thread download and merge file example, multiline thread merge example In this example, I/O streams and multiple threads are used to download the same image. After the download is completed, the thread creation method is used to control the execution time of the main thread, that is, the method called by the main thread, create a thread in the m

/*====================================================================== A Globalmem Driver As an example of char device drivers There are two same globalmems in this driver This example was to introduce the function of File->private_data The initial developer of the original code is Baohua Song ======================================================================*/ #include #include #include #include #in

We will find an example of using HttpClient to send a Post request in jsp. If you do not need any more, please refer to it. The company wants to encapsulate its own product into a WebService platform, so it recently began to learn how to use Java to send Http request content. This section was previously written in PHP and used in most basic sockets and third-party plug-ins. I learned two Java Methods: java.net. UR