REPORT-33025 无插件PDF导出-HTML解析：支持<a>标签超链

fine-itext/src/main/java/com/fr/third/v2/lowagie/text/html/simpleparser/ChainedProperties.java

@@ -76,8 +76,11 @@ public class ChainedProperties {
 		return null;
 	}
 
-	public String getLastChainProperty(String key){
+	public String getLastChainProperty(String key) {
-		Object obj[] = (Object[]) chain.get(chain.size()-1);
+		if (0 == chain.size()) {
+			return null;
+		}
+		Object obj[] = (Object[]) chain.get(chain.size() - 1);
 		HashMap prop = (HashMap) obj[1];
 		return (String) prop.get(key);
 	}
@@ -199,5 +202,31 @@ public class ChainedProperties {
 		return false;
 	}
 
+	/**
+	 * 获取当前处理的标签
+	 *
+	 * @return 标签名
+	 */
+	public String getLastTag() {
+		if (chain.size() == 0) {
+			return null;
+		}
+		Object obj[] = (Object[]) chain.get(chain.size() - 1);
+		return (String) obj[0];
+	}
 
+	/**
+	 * 判断 LastChain 是否存在一对 Key - value
+	 *
+	 * @param key
+	 * @param value
+	 * @return
+	 */
+	public boolean hasKvInLastChain(String key, String value) {
+		String actualValue = getLastChainProperty(key);
+		if (null == actualValue && null == value) {
+			return true;
+		}
+		return null == value ? actualValue.equals(value) : value.equals(actualValue);
+	}
 }

fine-itext/src/main/java/com/fr/third/v2/lowagie/text/html/simpleparser/FactoryProperties.java

@@ -50,6 +50,7 @@
 
 package com.fr.third.v2.lowagie.text.html.simpleparser;
 
+import com.fr.third.v2.lowagie.text.html.CSS;
 import java.awt.Color;
 import java.util.HashMap;
 import java.util.Iterator;
@@ -85,6 +86,7 @@ public class FactoryProperties {
 
 	public Chunk createChunk(String text, ChainedProperties props) {
 		Font font = getFont(props);
+		dealHyperlinkfont( font,  props);
 		float size = font.getSize();
 		size /= 3;
 		Chunk ck = new Chunk(text, font);
@@ -104,6 +106,29 @@ public class FactoryProperties {
 		}
 		return ck;
 	}
+
+	/**
+	 * 处理超链接的字体颜色和下划线
+	 *
+	 * @param font
+	 * @param props
+	 */
+	private static void dealHyperlinkfont(Font font, ChainedProperties props) {
+		String tagName = props.getLastTag();
+		if (null == tagName || tagName.equals("") || !tagName.equals(HtmlTags.ANCHOR)) {
+			return;
+		}
+		int style = font.getStyle();
+		if (props.hasKvInLastChain(CSS.Property.TEXT_DECORATION, CSS.Value.NONE)) {
+			font.setStyle(style & (~Font.UNDERLINE));
+		} else {
+			font.setStyle(style | Font.UNDERLINE);
+		}
+		if (null == font.getColor() || (!font.getColor().equals(Color.BLUE) && null == props.getLastChainProperty(CSS.Property.COLOR))) {
+			font.setColor(Color.BLUE);
+		}
+	}
+
 	private static void setParagraphLeading(Paragraph p, String leading) {
 		if (leading == null) {
 			p.setLeading(0, 1.5f);

fine-itext/src/main/java/com/fr/third/v2/lowagie/text/pdf/PdfChunk.java

@@ -832,6 +832,21 @@ public class PdfChunk {
 
     public String toHtmlString() {
         StringBuffer htmlString = new StringBuffer();
+        String hyperlink =getHyperlink();
+        if (null != hyperlink && hyperlink.length() > 0) {
+            htmlString.append("<a style='");
+            htmlString.append(getStyleAttributes()).append("'");
+            htmlString.append(" href='").append(hyperlink).append("'>");
+            if (this.isImage()) {
+                htmlString.append("<img src='").append(image.getSrcString()).append("'").
+                        append(" style='width:").append(image.getPlainWidth()).append("px").
+                        append(" height:").append(image.getPlainHeight()).append("px'").append("/>");
+            } else {
+                htmlString.append(value);
+            }
+            htmlString.append("</a>");
+            return htmlString.toString();
+        }
         if (this.isImage()) {
             htmlString.append("<img src='").append(image.getSrcString()).append("'").
                     append(" style='width:").append(image.getPlainWidth()).append("px").
@@ -847,6 +862,15 @@ public class PdfChunk {
         return htmlString.toString();
     }
 
+    public String getHyperlink() {
+        Object obj = this.getAttribute(Chunk.ACTION);
+        if (null == obj || !(obj instanceof PdfAction)) {
+            return null;
+        }
+        PdfObject pdfObj = ((PdfAction) obj).get(PdfName.URI);
+        return null == pdfObj ? null : pdfObj.toString();
+    }
+
     private String getStyleAttributes(){
         StringBuffer stringBuffer = new StringBuffer();
         dealFontStyle(stringBuffer, font.getOriFont());