Adobe PDF Document Content Searching; Does anyone have any experienci

You can very easily build a smart service using the Apache POI library. It has lots of custom extractors for various document types. I don't have the exact code for PDF but I wrote extenders for Open office documents (i.e. docx, pptx, xlsx etc) and here is the code for extracting content from a docx file. You will use the same method for pdf. The only item you need to change is the Document interface (from XWPFDocument to the one corresponding to PDF.

package com.appiancorp.search.extend.extract;

/**
* @author sathya.srinivasan
* @description - MS XLSX document extractor
* @date 24/11/2011
*
*/

import java.io.InputStream;
import java.net.URLConnection;

import javax.activation.MimetypesFileTypeMap;

import org.apache.poi.openxml4j.opc.internal.ContentType;
import org.apache.poi.poifs.eventfilesystem.POIFSReader;
import org.apache.poi.xwpf.extractor.XWPFWordExtractor;
import org.apache.poi.xwpf.usermodel.XWPFDocument;

import com.appiancorp.search.extract.text.ITextExtractor;
import com.appiancorp.search.extract.text.TextExtractorException;

public class DocxTextExtractor implements ITextExtractor {

          
          public DocxTextExtractor()
          {
                    
          }
          
          
          @Override
          public String extract(InputStream in) throws TextExtractorException {
                    
                    try{
                              XWPFDocument document = new XWPFDocument(in);                              
                              XWPFWordExtractor wordExtractor = new XWPFWordExtractor(document);
                              return wordExtractor.getText();
                    }catch(Exception e){
                              throw new TextExtractorException((new StringBuilder()).append("Exception: ").append(e.getMessage()).toString());
                    }
                    
                    
          }

}

You can very easily build a smart service using the Apache POI library. It has lots of custom extractors for various document types. I don't have the exact code for PDF but I wrote extenders for Open office documents (i.e. docx, pptx, xlsx etc) and here is the code for extracting content from a docx file. You will use the same method for pdf. The only item you need to change is the Document interface (from XWPFDocument to the one corresponding to PDF.

package com.appiancorp.search.extend.extract;

/**
* @author sathya.srinivasan
* @description - MS XLSX document extractor
* @date 24/11/2011
*
*/

import java.io.InputStream;
import java.net.URLConnection;

import javax.activation.MimetypesFileTypeMap;

import org.apache.poi.openxml4j.opc.internal.ContentType;
import org.apache.poi.poifs.eventfilesystem.POIFSReader;
import org.apache.poi.xwpf.extractor.XWPFWordExtractor;
import org.apache.poi.xwpf.usermodel.XWPFDocument;

import com.appiancorp.search.extract.text.ITextExtractor;
import com.appiancorp.search.extract.text.TextExtractorException;

public class DocxTextExtractor implements ITextExtractor {

          
          public DocxTextExtractor()
          {
                    
          }
          
          
          @Override
          public String extract(InputStream in) throws TextExtractorException {
                    
                    try{
                              XWPFDocument document = new XWPFDocument(in);                              
                              XWPFWordExtractor wordExtractor = new XWPFWordExtractor(document);
                              return wordExtractor.getText();
                    }catch(Exception e){
                              throw new TextExtractorException((new StringBuilder()).append("Exception: ").append(e.getMessage()).toString());
                    }
                    
                    
          }

}