Java cgi näide: datafailist htmli tegemine

list.cgi pathid tuleb muidugi ära muuta, siin toodud töötasid Taneli läpakas. Samuti peaks lõpuks olema üks rida, mitte kaks:

#!/bin/sh
cd /tmp
/usr/local/java/j2sdk1.4.2_02/bin/java -cp  /home/tanel/Ms/SEATS/trunk/www/Katse
   list $QUERY_STRING

data.txt oli selline:

http://www.itcollege.ee,itk,10,2,1
http://www.epl.ee,epl,5,3,2

ning lõpuks java programm list.java:

import java.io.*;

public class list {

 public static void main(String[] args) {
    String ls_str;    
    String filename;
    String[] pieces;
    int nr=1;

    System.out.println("content-type: text/html");
    System.out.println("");
    
    System.out.println("<p>Head lingid:</p><p></p>");
    //System.out.println(args[0]);
   
    filename="/home/tanel/Ms/SEATS/trunk/www/Katse/data.txt";
   
    File file = new File(filename);   
    
    // All file I/O operations must be done within a try/catch statement
    
    try {

      // Set up the proper readers and writers
      FileReader file_reader = new FileReader(filename);      
      BufferedReader br_reader = new BufferedReader(file_reader);      

      // Get the first line of the file
      String line = br_reader.readLine(); 
     
      // check to see if it is null - end of file
      while (line != null) {

        // print line to output file
        //System.out.println(line);
        pieces=split(line);
        if (pieces.length>1) {
         System.out.println(nr+". "); 
         System.out.println(
           "<a href=\""+pieces[0]+"\">"+
            pieces[1]+
           "</a>");         
         System.out.println(pieces[2]+"+ ja "+
                            pieces[3]+"-"); 
         System.out.println("<br>"); 
         nr++; 
        }  

        // get next line of input file
        line = br_reader.readLine();

      } // while loop
      
      // Finally you must close input and output streams!
      
      file_reader.close();     
      
    } //try

    // catch any exceptions thrown
    catch (IOException e) {
      //print error and exit program
      System.out.println(e);
      System.exit(1);
    }
  } 

 public static String[] split(String input) {
    int len;
    int count;
    int pos;
    String separator=",";
    int ws;
    int we;
    String[] words;
   
   /* count the number of separators: 
       then we know the required size of the array */
    
    len=input.length();
    count=0;
    pos=-1;
    for(;;) { // loop over all occurrences of separator in input
      pos=input.indexOf(separator,pos+1);  // search from last pos found!
      if (pos<0) break; // none found after pos
      count++;  
    }  
      
    // let us print some useful debug information
    //System.out.println("\nFound "+count+" separators "+separator);    
    
    // make a suitable array    
    words=new String[count+1];  
    
    // loop again over the input, this time collecting strings    
    ws=0;  // word start
    we=ws+1; // word end
    count=0;
    pos=-1;
    for(;;) { // again, loop over all occurrences of separator in input
      pos=input.indexOf(separator,pos+1);  // search from last pos found!
      if (pos<0) {
        // no separator found after pos: take to end of string
        we=input.length();
      } else {                
        // separator found
        we=pos;
      }  
      words[count]=input.substring(ws,we).trim(); // take substring, remove spaces          
      ws=pos+separator.length(); // this is where the next word will start
      count++;  
      if (pos<0) break;
    }  
  
    return words; 
 }    
  
}