处理图片位置不准的问题

cloud-common/src/main/java/com/cm/common/utils/PDFUtil.java

@@ -140,10 +140,10 @@ public class PDFUtil {
             // 合成PDF
             Image image = Image.getInstance(imageFile);
             image.scalePercent(50F);
-            // image.scaleAbsolute(200);
+            float scaledHeight = image.getScaledHeight();
-
+            float centerHeight = ((float) lastCharInfo.getCharWidth() + scaledHeight) / 2;
-            image.setAbsolutePosition((float) (lastCharInfo.getX() + 10), (float) (lastCharInfo.getY() - 25));
+            image.setAbsolutePosition((float) (lastCharInfo.getX() + lastCharInfo.getCharWidth()), (float) (lastCharInfo.getY() - centerHeight));
-            PdfContentByte underContent = pdfStamper.getUnderContent(1);
+            PdfContentByte underContent = pdfStamper.getUnderContent(lastCharInfo.getPageNum());
             underContent.addImage(image);
             pdfStamper.close();
             pdfReader.close();
@@ -167,6 +167,15 @@ public class PDFUtil {
         return true;
     }
 
+    /**
+     * 图片替换关键字
+     *
+     * @param sourceFile
+     * @param keyword
+     * @param outFile
+     * @param imageFile
+     * @return
+     */
     public static boolean addImageReplaceKeyword(String sourceFile, String keyword, String outFile, String imageFile) {
         PdfReader pdfReader = null;
         PdfStamper pdfStamper = null;
@@ -183,8 +192,8 @@ public class PDFUtil {
             image.scalePercent(50F);
             // image.scaleAbsolute(200);
 
-            image.setAbsolutePosition((float) (lastCharInfo.getX() + 10), (float) (lastCharInfo.getY() - 25));
+            image.setAbsolutePosition((float) (lastCharInfo.getX()), (float) (lastCharInfo.getY()));
-            PdfContentByte underContent = pdfStamper.getUnderContent(1);
+            PdfContentByte underContent = pdfStamper.getUnderContent(lastCharInfo.getPageNum());
             underContent.addImage(image);
             pdfStamper.close();
             pdfReader.close();
@@ -223,7 +232,11 @@ public class PDFUtil {
             if (index < 0) {
                 continue;
             }
+            // keyword.length() - 1
             lastCharInfo = pageInfo.getCharInfos().get(index + keyword.length() - 1);
+            lastCharInfo.setPageNum(pageInfo.getPageNum());
+            lastCharInfo.setPageWidth(pageInfo.getPageWidth());
+            lastCharInfo.setPageHeight(pageInfo.getPageHeight());
         }
         return lastCharInfo;
     }
@@ -246,6 +259,9 @@ public class PDFUtil {
                 continue;
             }
             firstCharInfo = pageInfo.getCharInfos().get(index);
+            firstCharInfo.setPageNum(pageInfo.getPageNum());
+            firstCharInfo.setPageWidth(pageInfo.getPageWidth());
+            firstCharInfo.setPageHeight(pageInfo.getPageHeight());
         }
         return firstCharInfo;
     }
@@ -275,18 +291,19 @@ public class PDFUtil {
             PdfContentStreamProcessor pdfContentStreamProcessor = new PdfContentStreamProcessor(pdfRenderListener);
             // 解析PDF流
             pdfContentStreamProcessor.processContent(ContentByteUtils.getContentBytesForPage(pdfReader, pageNum), resourcesPdfDictionary);
-            pageInfos.add(new PageInfo(pdfRenderListener.getContent(), pdfRenderListener.getCharInfos()));
+            pageInfos.add(new PageInfo(pageNum, pageWidth, pageHeight, pdfRenderListener.getContent(), pdfRenderListener.getCharInfos()));
         }
         return pageInfos;
     }
 
     public static class PdfRenderListener implements RenderListener {
 
-        private static final List<CharInfo> charInfos = new ArrayList<>();
+        private List<CharInfo> charInfos = new ArrayList<>();
-        private static final StringBuffer content = new StringBuffer();
+        private StringBuffer content = new StringBuffer();
 
         @Override
         public void beginTextBlock() {
+
         }
 
         // 逐行解析文本
@@ -294,16 +311,16 @@ public class PDFUtil {
         public void renderText(TextRenderInfo textRenderInfo) {
             // 行内容
             List<TextRenderInfo> characterRenderInfos = textRenderInfo.getCharacterRenderInfos();
+            // PDF坐标在左下角？
             for (TextRenderInfo characterRenderInfo : characterRenderInfos) {
                 String word = characterRenderInfo.getText();
                 Rectangle2D.Float boundingRectange = characterRenderInfo.getAscentLine().getBoundingRectange();
-                double minX = boundingRectange.getMinX();
+                double minX = boundingRectange.getX();
-                double minY = boundingRectange.getMinY();
+                double minY = boundingRectange.getY();
-                CharInfo charInfo = new CharInfo(minX, minY, boundingRectange.getWidth(), boundingRectange.getHeight());
+                CharInfo charInfo = new CharInfo(minX, minY, boundingRectange.getWidth(), boundingRectange.getHeight(), word);
                 charInfos.add(charInfo);
                 content.append(word);
             }
-
         }
 
         @Override
@@ -330,16 +347,46 @@ public class PDFUtil {
      * 页面信息
      */
     public static class PageInfo {
+        private Integer pageNum;
+        private Float pageWidth;
+        private Float pageHeight;
         private String content;
         private List<CharInfo> charInfos;
 
-        public PageInfo(String content, List<CharInfo> charInfos) {
+        public PageInfo(Integer pageNum, Float pageWidth, Float pageHeight, String content, List<CharInfo> charInfos) {
+            this.pageNum = pageNum;
+            this.pageWidth = pageWidth;
+            this.pageHeight = pageHeight;
             this.content = content;
             this.charInfos = charInfos;
         }
 
+        public Integer getPageNum() {
+            return pageNum == null ? 0 : pageNum;
+        }
+
+        public void setPageNum(Integer pageNum) {
+            this.pageNum = pageNum;
+        }
+
+        public Float getPageWidth() {
+            return pageWidth == null ? 0 : pageWidth;
+        }
+
+        public void setPageWidth(Float pageWidth) {
+            this.pageWidth = pageWidth;
+        }
+
+        public Float getPageHeight() {
+            return pageHeight == null ? 0 : pageHeight;
+        }
+
+        public void setPageHeight(Float pageHeight) {
+            this.pageHeight = pageHeight;
+        }
+
         public String getContent() {
-            return content == null ? "" : content.trim();
+            return content == null ? "" : content;
         }
 
         public void setContent(String content) {
@@ -362,16 +409,45 @@ public class PDFUtil {
      * 字体信息
      */
     public static class CharInfo {
+        private int pageNum;
+        private float pageWidth;
+        private float pageHeight;
         private double x;
         private double y;
         private double charWidth;
         private double charHeight;
+        private String text;
 
-        public CharInfo(double x, double y, double charWidth, double charHeight) {
+        public CharInfo(double x, double y, double charWidth, double charHeight, String text) {
             this.x = x;
             this.y = y;
             this.charWidth = charWidth;
             this.charHeight = charHeight;
+            this.text = text;
+        }
+
+        public int getPageNum() {
+            return pageNum;
+        }
+
+        public void setPageNum(int pageNum) {
+            this.pageNum = pageNum;
+        }
+
+        public float getPageWidth() {
+            return pageWidth;
+        }
+
+        public void setPageWidth(float pageWidth) {
+            this.pageWidth = pageWidth;
+        }
+
+        public float getPageHeight() {
+            return pageHeight;
+        }
+
+        public void setPageHeight(float pageHeight) {
+            this.pageHeight = pageHeight;
         }
 
         public double getX() {
@@ -405,6 +481,14 @@ public class PDFUtil {
         public void setCharHeight(double charHeight) {
             this.charHeight = charHeight;
         }
+
+        public String getText() {
+            return text == null ? "" : text;
+        }
+
+        public void setText(String text) {
+            this.text = text;
+        }
     }
 
 }