如何利用pdfbox将pdf解析为txt

秒速五厘米 2022-06-08 02:08 170阅读 0赞

利用apache的pdfbox将pdf解析为txt文件，需要的最基本包如下：

pdfbox-0.7.3.jar

fontbox-2.0.7.jar

commons-logging-1.2.jar

点我下载：[点击打开下载链接][Link 1]

下面是以d盘pdf目录下的pdf文件为例：

package com;
    import java.io.BufferedReader;
    import java.io.File;
    import java.io.FileInputStream;
    import java.io.FileNotFoundException;
    import java.io.FileWriter;
    import java.io.IOException;
    import java.io.InputStreamReader;
    import java.sql.SQLException;
    
    import org.apache.pdfbox.io.RandomAccessBuffer;
    import org.apache.pdfbox.pdfparser.PDFParser;
    import org.apache.pdfbox.pdmodel.PDDocument;
    import org.apache.pdfbox.text.PDFTextStripper;
    
    public class CsrPdfRead {
    
    	/**
    	 *读取文本文件解析文本
    	 * @param args
    	 * @throws InterruptedException 
    	 * @throws SQLException 
    	 */
    	public static void main(String[] args) throws InterruptedException, SQLException {
    		String path="d:/pdf";
    		String filepath="";
    		  File file=new File(path);
    		  File[] tempList = file.listFiles();
    		  System.out.println("该目录下对象个数："+tempList.length);
    		  for (int i = 0; i < tempList.length; i++) {
    		   if (tempList[i].isFile()) {
    			    filepath=path+"/"+tempList[i].getName();
    			    System.out.println(path+"/"+filepath);
    			    if(!filepath.toUpperCase().endsWith(".TXT")){
    			    	System.out.println(getOrderText(filepath));
    	        	}
    		   }
    		   if (tempList[i].isDirectory()) {
    		    System.out.println("文件夹："+tempList[i]);
    		   }
    		  }
    		
    		
    		
    	}
    	public static String getOrderText(String filepath){
    		String filetxt="";
    		 try {
    			 
                 String encoding="GBK";
               String newfilepath=  getTextFromPDF(filepath);
                 if(newfilepath==null){
                	 return "";
                 }
                 File file=new File(newfilepath);
                 if(file.isFile() && file.exists()){ //判断文件是否存在
                	 InputStreamReader read = new InputStreamReader(
                     new FileInputStream(file),encoding);//考虑到编码格式
                     BufferedReader bufferedReader = new BufferedReader(read);
                     String lineTxt = null;
                     int a = 0;
                     int b = 0;
                     String bb = "";
                     while((lineTxt = bufferedReader.readLine()) != null){
                    	//System.out.println(lineTxt);
                    	 if(lineTxt==null || lineTxt.equals("")||lineTxt.trim().length()==0){
                    		 continue;
                    	 }
                         if(lineTxt.contains("Order ID")){
                        	 String[] oid = lineTxt.split("\\u0029\\s*P");
                        	 if(oid.length>0){
                        		 bb+=oid[0].substring(oid[0].lastIndexOf("(")+10);
                         		b++;
                        	 } 
                         }
                   
                         if(lineTxt.contains("-001")){
                        	 if(lineTxt.lastIndexOf("-001")-11>=0){
                        	 bb+=" "+lineTxt.substring(lineTxt.lastIndexOf("-001")-11,lineTxt.lastIndexOf("-001")+4);
                        	 b++;
                        	 }
                         }
                         if(lineTxt.contains("end of line")){
                        	// System.out.println(++a);
                        	 if(b==2){
                        		 System.out.println(bb);
                        		 //filetxt+=++a+":"+bb+"/r/n";
                        		 bb="";
                        		 b=0;
                        	 }
                         }
                     }
                     read.close();
         }else{
             System.out.println("找不到指定的文件");
         }
         } catch (Exception e) {
             System.out.println("读取文件内容出错");
             e.printStackTrace();
         }
         return filetxt;
    	}
    	
    	 public  static String getTextFromPDF(String pdfFilePath) {  
    	        String result = null;  
    	        FileInputStream is = null;  
    	        PDDocument document = null;  
    	        try {  
    	        	if(pdfFilePath.toUpperCase().endsWith(".TXT")){
    	        		return null;
    	        	}
    	            is = new FileInputStream(pdfFilePath);  
    	            PDFParser parser = new PDFParser(new RandomAccessBuffer(is));  
    	            parser.parse();  
    	            document = parser.getPDDocument();
    	            System.out.print(document);
    	            PDFTextStripper stripper = new PDFTextStripper();  
    	            System.out.println(pdfFilePath);
    	            result = stripper.getText(document); 
    	            FileWriter fw = new FileWriter(pdfFilePath+".txt",false);
    	            fw.write(result);
    	            fw.flush();
    	            fw.close();
    	        } catch (FileNotFoundException e) {  
    	            e.printStackTrace();  
    	        } catch (IOException e) {  
    	            e.printStackTrace();  
    	        }catch (Exception e){
    	        	  e.printStackTrace();
    	        }finally {
    	            if (is != null) {  
    	                try {  
    	                    is.close();  
    	                } catch (IOException e) {  
    	                    e.printStackTrace();  
    	                }  
    	            }  
    	            if (document != null) {  
    	                try {  
    	                    document.close();  
    	                } catch (IOException e) {  
    	                    e.printStackTrace();  
    	                }  
    	            }  
    	        }  
    	        return pdfFilePath+".txt";  
    	    }  
    }

结果：

![20170911183706742][]![20170911183718289][]

[Link 1]: http://download.csdn.net/download/mixika99/9973832
[20170911183706742]: https://img-blog.csdn.net/20170911183706742
[20170911183718289]: /images/20220608/7028ebc79ce84d61b49f2b1b1e377a07.png