如何使用Itext获取pdf文字的坐标

import java.io.IOException;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
 
import com.itextpdf.awt.geom.Rectangle2D.Float;
import com.itextpdf.text.pdf.PdfReader;
import com.itextpdf.text.pdf.parser.ImageRenderInfo;
import com.itextpdf.text.pdf.parser.PdfReaderContentParser;
import com.itextpdf.text.pdf.parser.RenderListener;
import com.itextpdf.text.pdf.parser.TextRenderInfo;
 
public class Demo {
    private static String KEY_WORD = "TIME SUMMARY";
    private static int i = 0;
   static List arrays = new ArrayList();
    static String sb ;
    private static List getKeyWords(String filePath) {
        try {
            PdfReader pdfReader = new PdfReader(filePath);
            int pageNum = pdfReader.getNumberOfPages();
            PdfReaderContentParser pdfReaderContentParser = new PdfReaderContentParser(
                    pdfReader);
            for (i = 1; i < 2; i++) {
                pdfReaderContentParser.processContent(i, new RenderListener() {
                    @Override
                    public void renderText(TextRenderInfo textRenderInfo) {
                        String text = textRenderInfo.getText(); // 整页内容
 
                        if (null != text && text.contains(KEY_WORD)) {
                            Float boundingRectange = textRenderInfo
                                    .getBaseline().getBoundingRectange();
                            sb = boundingRectange.x+"--"+boundingRectange.y+"---";
 
                            float[] resu = new float[3];
                            resu[0] = boundingRectange.x;
                            resu[1] = boundingRectange.y;
                            resu[2] = i;
                            arrays.add(resu);
                        }
                    }
 
                    @Override
                    public void renderImage(ImageRenderInfo arg0) {
                        // TODO Auto-generated method stub
 
                    }
 
                    @Override
                    public void endTextBlock() {
                        // TODO Auto-generated method stub
 
                    }
 
                    @Override
                    public void beginTextBlock() {
                        // TODO Auto-generated method stub
 
                    }
                });
            }
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        return arrays;
    }
 
    public static void main(String[] args) {
 
        List ff = getKeyWords("C:XXXX.pdf");
        for(float[] f : ff){
            System.out.println(f[0]+"----"+f[1]+"-----"+f[2]);
        }
        System.out.println(sb);
 
     }
 
}

class ParagraphEventHandler extends PdfPageEventHelper {
public boolean active = false;
public void setActive(boolean active) {
this.active = active;
}
public float offset = 5;
public float startPosition;
@Override
public void onParagraph(PdfWriter writer, Document document, float paragraphPosition) {//段落将被写入的位置
this.startPosition = paragraphPosition;
}
@Override
public void onParagraphEnd(PdfWriter writer, Document document, float paragraphPosition) {//段落结尾的位置
if (active) {
try {
if (imgstr.length() > 0) {
Image img = utilClass.stringtoBitmap(imgstr);//字符串转图片
img.setAbsolutePosition(370, paragraphPosition);
documentpdf.add(img);
}
} catch ( Exception ex ) {}
}
}
}