sockets - Java: Difference with dis.read() and dis.readUTF() in DataInputStream -


simple question.

what difference dis.read() , dis.readutf()?

for example, dis.read() read byte array, , dis.readutf() access string type.

is correct?

if server has implements dis.readutf(), can not read byte stream?

@override public void run() {     // todo auto-generated method stub     while(menabled)     {         if (!mfilereceive) {             try {                 // read                 string tmpstr = dis.readutf();                 // here come `dis.readutf()` <- can not read byte array?                  mstringbuffer += tmpstr;                  if (tmpstr.length() >= 4096)                     continue;                 system.out.println("print : " + mstringbuffer);                  parse = new parsejson(null, mstringbuffer.tostring());                 // ack message                 if (mackenabled) {                     mfilename = "{opcode:0x06,ack:c" + parse.getparseddata().get("ack").substring(1) + "}";                     dos.writeutf(mfilename);                     dos.flush();                     system.out.println("ack message send : " + mfilename);                     mfilename = null;                 }                 if (parse.getparseddata().get("opcode").equals("155")) {                     mfilereceive = true;                 }                 parse.clear();                 parse = null;              } catch (ioexception e) {                 // todo auto-generated catch block                 system.out.println("serverthread disconnect");                 break;             }

readutf() reads stream in representation of unicode character string encoded in modified utf-8 format; string of characters returned string.

you should use read method takes bytes array argument. here explanation:

public final int read(byte[] b) throws ioexception

reads number of bytes contained input stream , stores them buffer array b. number of bytes read returned integer.


Comments

Post a Comment

Popular posts from this blog

java - Play! framework 2.0: How to display multiple image? -

i need display gallery of photos. here template: @(photos: list[photo]) @title = { <bold>gallery</bold> } @main(title,"photo"){ <ul class="thumbnails"> @for(photo <- photos) { <li class="span3"> <a href="#" class="thumbnail"> <img src="@photo.path" alt=""> </a> </li> } </ul> } and here controller method: public static result getphotos() { return ok(views.html.photo.gallery.render(photo.get())); } and here photo bean : @entity public class photo extends model { @id public long id; @required public string label; public string path; public photo(string path, string label) { this.path = path; this.label = label; } private static finder<long, photo> find = new finder<long, photo>( long.class, photo.class); public static list<phot...
Read more

gmail - Is there any documentation for read-only access to the Google Contacts API? -

i want read-only access user's google contacts. there stackoverflow member wanted this, , received following answer : yes, there is, use https://www.googleapis.com/auth/contacts.readonly scope , "view contacts". this exchange reference read-only access google contacts can find using google. simply using access token obtained attempt read usual google contacts api (i.e. https://www.google.com/m8/feeds ) fails insufficient permissions. similarly, using google contacts api on new target fails 404 errors (for example https://www.googleapis.com/auth/contacts.readonly/default/full ). is there documentation anywhere on how use api, or permissible way access google contacts api full read-write access?
Read more

php - Controller/JToolBar not working in Joomla 2.5 -

relevant code: jtoolbarhelper::custom('savecategories', 'save', '', 'save', false, false); ... <input type="hidden" name="controller" value="easyblogcontroller"> according can dig docs , own previous questions, should call savecategories() function in easyblogcontroller . i've tried setting value easyblog , easyblog.php (file name) current easyblogcontroller (class name). clicking on save button refreshes page. not redirect, echo or var_dump test code put in savecategories() function. var_dump ing jrequest::getvar('controller') , 'task' return correct values. creating controller object , using $controller->execute('task'); works. the values going depend on location of controller trying call, , have couple options here. typically there controller in base folder of component (likely components/com_easyblog) in file called controller.php , class name inside ...
Read more