content: package org.ruoyi.chain.loader;
  
  import lombok.AllArgsConstructor;
  import org.apache.pdfbox.pdmodel.PDDocument;
  import org.apache.pdfbox.text.PDFTextStripper;
  import org.ruoyi.chain.split.TextSplitter;
  import org.springframework.stereotype.Component;
  
  import java.io.IOException;
  import java.io.InputStream;
  import java.util.List;
  
  @Component
  @AllArgsConstructor
  public class PdfFileLoader implements ResourceLoader {
      private final TextSplitter characterTextSplitter;
      @Override
      public String getContent(InputStream inputStream) {
          PDDocument document = null;
          try {
              document = PDDocument.load(inputStream);
              PDFTextStripper textStripper = new PDFTextStripper();
              String content = textStripper.getText(document);
              return content;
          } catch (IOException e) {
              throw new RuntimeException(e);
          }
      }
  
      @Override
      public List<String> getChunkList(String content, String kid) {
          return characterTextSplitter.split(content, kid);
      }
  }
  