package test;

 import java.io.FileInputStream;

 import java.io.IOException;

 import java.util.ArrayList;

 import java.util.List;

 import java.util.regex.Pattern;

 import org.apache.pdfbox.cos.COSDocument;

 import org.apache.pdfbox.pdfparser.PDFParser;

 import org.apache.pdfbox.util.PDFTextStripper;

 import com.itextpdf.text.pdf.PdfReader;

 import com.itextpdf.text.pdf.parser.PdfTextExtractor;

 public class UploadUtils {

     private final static Pattern pattern = Pattern.compile("\\d+");

     private final static int stateParaOverFlag = 800;

     private final static int thankParaOverFlag = 800;

     /**

      * 读取pdf参考文献内容

      *

      * @param s

      * @return

      */

     public String readPdf(String filePath) {

         StringBuilder buffer = new StringBuilder();

         FileInputStream fis = null;

         PdfReader pdfReader = null;

         COSDocument cosDocument = null;

         String[] paragraphs = null;

         PDFParser p;

         boolean addBool = true;

         boolean judgeState = false;

         boolean judgeThank = false;

         StringBuilder tempSb = new StringBuilder();

         try {

             fis = new FileInputStream(filePath);

             p = new PDFParser(fis);

             p.parse();

             cosDocument = p.getDocument();

             // 加密文档判断

             if (cosDocument.isEncrypted()) {

                 StringBuilder tempContent = new StringBuilder();

                 pdfReader = new PdfReader(filePath);

                 int i = pdfReader.getNumberOfPages();

                 for (int j = 1; j <= i; j++) {

                     tempContent.append(PdfTextExtractor.getTextFromPage(pdfReader, j));

                 }

                 paragraphs = tempContent.toString().split("\n");

             } else {

                 PDFTextStripper ts = new PDFTextStripper();

                 paragraphs = ts.getText(p.getPDDocument()).split("\n");

             }

             boolean mark = false;

             List<Integer> errornum = new ArrayList<Integer>();

             int flag = 0;

             int endRange = paragraphs.length * 70 / 100;

             int rangeFlag = 0;

             for (String lineContent : paragraphs) {

                 if (judgeState) {

                     tempSb.append(lineContent);

                     if (tempSb.length() >= stateParaOverFlag) {

                         judgeState = false;

                         addBool = true;

                         tempSb.delete(0, tempSb.length() - 1);

                     }

                 }

                 if (judgeThank) {

                     tempSb.append(lineContent);

                     if (tempSb.length() >= thankParaOverFlag) {

                         judgeThank = false;

                         addBool = true;

                         tempSb.delete(0, tempSb.length() - 1);

                     }

                 }

                 if (addBool) {

                     buffer.append(lineContent);

                 }

                 if (mark && rangeFlag >= endRange) {

                     if (lineContent.length() < 5) {

                         errornum.add(++flag);

                         rangeFlag++;

                         continue;

                     }

                     if (pattern.matcher(lineContent.substring(0, 5)).find()) {

                         if (flag != 0) {

                             flag = 0;

                             errornum.clear();

                         }

                     } else {

                         errornum.add(++flag);

                     }

                     if (errornum.size() > 2) {

                         mark = false;

                     }

                 }

                 rangeFlag++;

             }

         } catch (Exception e) {

             e.printStackTrace();

         } finally {

             if (fis != null) {

                 try {

                     fis.close();

                 } catch (IOException e) {

                     e.printStackTrace();

                 } finally {

                     fis = null;

                 }

             }

             if (pdfReader != null) {

                 pdfReader.close();

             }

             if (cosDocument != null) {

                 try {

                     cosDocument.close();

                 } catch (IOException e) {

                     e.printStackTrace();

                 } finally {

                     cosDocument = null;

                 }

             }

         }

         return buffer.toString();

     }

     public static boolean isBlank(CharSequence cs) {

         int strLen;

         if (cs == null || (strLen = cs.length()) == 0) {

             return true;

         }

         for (int i = 0; i < strLen; i++) {

             if (Character.isWhitespace(cs.charAt(i)) == false) {

                 return false;

             }

         }

         return true;

     }

     public static void main(String[] args) {

         // System.err.println(new UploadUtils()

         // .readPdf("/opt/fileCache/2014/125/13/shuangping_D7037870CF4FC5C421A3E5359DCF8BBE.pdf"));

         System.err.println(new UploadUtils().readPdf("E:\\MyWork\\guyezhai\\pdf提取\\路径依赖视角下高校新专业建设的策略创新(1).pdf"));

     }

 }

bcpkix-jdk15on-1.47.jar

bcprov-jdk15on-1.49.jar

commons-logging-1.1..jar

fontbox-1.8..jar

icu4j-4.0..jar

itextpdf-5.4..jar

jempbox-1.8..jar

pdfbox-1.8..jar