httputils.java

java 写的一个新闻发布系统

//
//  HttpUtils
//  EV      19.12.2000
//
//  getRemoteFileContents
//

package org.jahia.utils;

import java.io.*;                       // File access methods
import java.io.*;					    // IOException
import java.net.*;					    // HttpURLConnection
import org.jahia.exceptions.JahiaException;;



public class HttpUtils {

    private static  HttpUtils   theObject = null;



    /***
        * constructor
	    * EV    19.12.2000
        *
        */
	private HttpUtils()
	{
	    JahiaConsole.println( "Utils", "***** Starting HttpUtils *****" );
	} // end constructor



    /***
        * getInstance
	    * EV    19.12.2000
        *
        */
	public static HttpUtils getInstance()
	{
	    if (theObject == null) {
	        theObject = new HttpUtils();
	    }
	    return theObject;
	} // end getInstance



    /***
        * getRemoteFileContents
	    * EV    03.12.2000
	    * called by NewsFeedServices.getNewsFeed(), DataSourceServices
        *
        */
	public String getRemoteFileContents( String urlPath )
	{
	    try {
            URL url             = new URL( urlPath );
            InputStreamReader input = new InputStreamReader( (InputStream) url.openStream() );
            BufferedReader in = new BufferedReader( (Reader) input );
            String contents = "";
            String buffer = "";
            while ((buffer = in.readLine()) != null) {
       	        contents += buffer + "\n";
            }
            return contents;
	    } catch (IOException ie) {
            String errorMsg = "Error in reading newsfeed " + urlPath + " : " + ie.getMessage();
            JahiaConsole.println( "NewsFeedManager", errorMsg + " -> Error !" );
            JahiaException je = new JahiaException(   "Cannot access to newsfeed",
                                                errorMsg, JahiaException.FILE_ERROR, JahiaException.ERROR );
            return "- No NewsFeed ! -";
	    }
	} // end getRemoteFileContents



} // end HttpUtils