将图像添加到iText的acrofield中？

我想使用acrofields来填充PDF，我能够完美地添加字符串数据，但是在向acrofields添加图像时遇到问题。这是我添加字符串数据代码..将图像添加到iText的acrofield中？

File f = new File("F:/Test/Agreement.pdf"); 
    InputStream sourceTemplatePDFUrlStream = new BufferedInputStream(new FileInputStream(f)); 
    File destinationFile = new File("F:/Test/ag1.pdf"); 

    PdfReader reader = new PdfReader(sourceTemplatePDFUrlStream); 
    PdfStamper stamper = new PdfStamper(reader, new FileOutputStream(
      destinationFile)); 

    AcroFields form = stamper.getAcroFields(); 
    Image img = Image.getInstance("E:/signature/signature.png"); 
    Set fields = form.getFields().keySet(); 

    Hashtable val = new Hashtable(); 
    val.put("name", "xxx"); 
    val.put("city_street_zip", "xxx"+"     "+"xxx"+"    "+"xxx"); 
    val.put("chck_1", "Yes"); 
    val.put("chck_2", "No"); 
    val.put("chck_3", "Yes"); 
    val.put("street_address", "xxx"); 
    val.put("account_num", "1234"); 



    Enumeration enumeration = val.keys(); 

    // iterate through Hashtable val keys Enumeration 
    while (enumeration.hasMoreElements()) { 
     String nextElement = (String) enumeration.nextElement(); 
     String nextElementValue = (String) val.get(nextElement); 
     //System.out.println(nextElement + ":=================fillData===================:" + nextElementValue); 
     form.setField(nextElement, nextElementValue); 
    } 

    //Form flattening makes the form non-editable and saveable with the 
    //form val filled in 
    stamper.setFormFlattening(true); 

    stamper.close();

来源

2013-04-17 Anil M

告诉我们你的代码 –

@VigneshVino编辑我question..included代码 –

您的堆栈跟踪会帮助我了解u'r问题 –

“官方”的方式来做到这一点，是有一个按钮字段作为占位符图像，并更换按键的“图标”作为my book描述：

PushbuttonField ad = form.getNewPushbuttonFromField(imageFieldName); 
ad.setLayout(PushbuttonField.LAYOUT_ICON_ONLY); 
ad.setProportionalIcon(true); 
ad.setImage(Image.getInstance("E:/signature/signature.png")); 
form.replacePushbuttonField("advertisement", ad.getField());

有关完整的代码示例，请参见ReplaceIcon.java。

免责声明：我是iText的原始开发人员，也是“iText in Action”书籍的作者。

来源

2013-04-17 09:48:53

感谢您的答复！很高兴得到你的回复:) –

我喜欢StackOverflow的概念。这就是我去年加入的原因。我尝试每天回答几个问题（尽管我并不总是有时间）。 –

form.getNewPushbuttonFromField（imageFieldName）为我返回null – Simon

你可以尝试用你的代码添加此添加图片

PdfContentByte content = stamper.getOverContent(reader.getNumberOfPages()); 
Image image = Image.getInstance(new URL("E:/signature/signature.png")); 
image.setAbsolutePosition(450,650); 
image.scaleAbsolute(200,200); 
content.addImage(image); 
reader.close(); 
return output.toByteArray();

来源

2013-04-17 06:28:22

以下解决方案工作：

public static void addImage(PdfStamper stamper,AcroFields form,String field,String fieldValue){ 
    try{ 
     System.out.println("Field "+field); 
    java.util.List<AcroFields.FieldPosition> photograph = form.getFieldPositions(field); 
    if(photograph!=null && photograph.size()>0){ 
    Rectangle rect= photograph.get(0).position; 
    //if(StringUtils.isNotBlank(fieldValue)){ 
    Image img = Image.getInstance(fieldValue); 
    img.scaleToFit(rect.getWidth(), rect.getHeight()); 
    img.setBorder(2); 
    img.setAbsolutePosition(
    photograph.get(0).position.getLeft() + (rect.getWidth() - img.getScaledWidth()) 
    , photograph.get(0).position.getTop() - (rect.getHeight())); 
    PdfContentByte cb = stamper.getOverContent((int)photograph.get(0).page); 
    cb.addImage(img); 
    //} 
    } 
    }catch(Exception e){ 
     e.printStackTrace(); 
    } 
    }

调用以上方法：

addImage(stamper, form, "CustomerSign", "E:/signature/signature.png");

其中CustomerSign是AcroField

来源

2013-04-17 07:43:26

帮助，感谢@Anil –

将图像添加到iText的acrofield中？

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