Java BodyContentHandler用法及代码示例

// Java Program to Read Everything into Inner String Buffer
// Main class
public class GFG {
    // Method 1
    // To parse the string
    public String parseToStringExample(String fileName)
        throws IOException, TikaException, SAXException
    {
        // Creating an object of InputStream class
        InputStream stream
            = this.getClass()
                  .getClassLoader()
                  .getResourceAsStream(fileName);
        Parser parser = new AutoDetectParser();
        ContentHandler handler = new BodyContentHandler();
        Metadata metadata = new Metadata();
        ParseContext context = new ParseContext();
        // Parsing the string
        parser.parse(stream, handler, metadata, context);
        return handler.toString();
    }
    // Method 2
    // Main driver method
    public static void main(String[] args)
        throws TikaException, IOException, SAXException
    {
        // Creating object of main class in main method
        GFG example = new GFG();
        // Display message for better readability
        System.out.println("Result");
        // Calling the method 1 to parse string by
        // providing file as an argument
        System.out.println(example.parseToStringExample(
            "test-reading.pdf"));
    }
}

// Java Program to Write Content into File by
// Specifying the Maximum Content Length
// Main class
// BodyContentHandlerWriteToFileExample
public class GFG {
    // Method 1
    // Main driver method
    public static void main(String[] args)
        throws TikaException, IOException, SAXException
    {
        // Creating an object of the class
        GFG example = new GFG();
        // Calling the Method 2 in main() method and
        // passing the file and directory path as arguments
        // to it
        example.writeParsedDataToFile(
            "test-reading.pdf",
            "/Users/ali_zhagparov/Desktop/pdf-content.txt");
    }
    // Method 2
    // Writing parsed data to a file
    public void
    writeParsedDataToFile(String readFromFileName,
                          String writeToFileName)
        throws IOException, TikaException, SAXException
    {
        // Creating an object of InputStream
        InputStream stream
            = this.getClass()
                  .getClassLoader()
                  .getResourceAsStream(readFromFileName);
        // Creating an object of File class
        File yourFile = new File(writeToFileName);
        // If file is already existing then
        // no operations to be performed
        yourFile.createNewFile();
        FileOutputStream fileOutputStream
            = new FileOutputStream(yourFile, false);
        Parser parser = new AutoDetectParser();
        ContentHandler handler
            = new BodyContentHandler(fileOutputStream);
        Metadata metadata = new Metadata();
        ParseContext context = new ParseContext();
        parser.parse(stream, handler, metadata, context);
    }
}