从java导出为pdf文件时,已为此响应调用getOutputStream()
我的java类中有以下代码部分从java导出为pdf文件时,已为此响应调用getOutputStream(),java,export-to-pdf,Java,Export To Pdf,我的java类中有以下代码部分 if(exportTo.equals("pdf")) { response.setHeader("Content-disposition", "attachment; filename=\"" + reportName + ".pdf\""); response.setContentType("application/pdf"); PdfWriter.getInstance(document,resp
if(exportTo.equals("pdf"))
{
response.setHeader("Content-disposition", "attachment; filename=\"" + reportName + ".pdf\"");
response.setContentType("application/pdf");
PdfWriter.getInstance(document,response.getOutputStream());
try {
document.open();
addTitlePage(document, reportName);
Image image = Image.getInstance(path+"/"+"images/abi.png");
image.setAbsolutePosition(40f, 770f);
image.scaleAbsolute(70f, 50f);
document.add(image);
response.flushBuffer();
//float[] colsWidth = {1.5f,3f,4f,4f,2f};
List<Float> colsWidth = new ArrayList<Float>();
int iterator = 1;
while (iterator <= headerMap.size()) {
if(iterator==1){
colsWidth.add(1.5f);
}else{
colsWidth.add(3f);
}
iterator++;
}
float[] floatArray = ArrayUtils.toPrimitive(colsWidth.toArray(new Float[0]), 0.0F);
PdfPTable table = new PdfPTable(floatArray);
table.setWidthPercentage(98);
table.setHorizontalAlignment(Element.ALIGN_CENTER);
PdfPCell c1 = new PdfPCell();
for (Iterator it = headerMap.keySet().iterator(); it.hasNext();) {
String headerName = (String) headerMap.get(it.next());
c1 = new PdfPCell(new Phrase(headerName, headerFont));
c1.setBackgroundColor(BaseColor.LIGHT_GRAY);
table.addCell(c1);
}
table.setHeaderRows(1);
table = custDAO.creadPDFTable(query, table);
document.add(table);
document.addAuthor(userViewModel.getUsername());
document.addCreationDate();
document.addCreator("POC");
document.close();
response.flushBuffer();
} catch (Exception ex) {
ex.printStackTrace();
}
}
我使用上述代码将图像添加到pdf文件(itextpdflibrary
)
什么可以解决这个问题,请告诉我,因为我已经面临了很长一段时间
关于。可能是一个解决方案: 尝试在尝试结束时放置所有文档内容:
try{
// create all object here, but don't add it to document yet.
// add all to document:
PdfWriter.getInstance(document,response.getOutputStream());
document.open();
addTitlePage(document, reportName);
document.add(image);
document.add(table);
document.addAuthor(userViewModel.getUsername());
document.addCreationDate();
document.addCreator("POC");
document.close();
response.flushBuffer();
} catch (Exception ex) {
ex.printStackTrace();
}
没有其他方法可以避免这个异常我有一个单独的方法将图像添加到文档中,并将其称为,这将解决我的问题 谢谢你的帮助
Image image = Image.getInstance(path+"/"+"images/abi.png");
image.setAbsolutePosition(40f, 770f);
image.scaleAbsolute(70f, 50f);
document.add(image);
response.flushBuffer();
如果删除第一个
response.flushBuffer()代码>?哪一行?您能给出堆栈跟踪吗?Image=Image.getInstance(路径+“/”+“images/abi.png”)
是它给出异常的一行,但当我看到控制台时,它说file not found Exction给出了文件的完整路径,如D:\Reports\images\abi.png
,但它不是一个独立的应用程序,它是一个web应用程序
Image image = Image.getInstance(path+"/"+"images/abi.png");
image.setAbsolutePosition(40f, 770f);
image.scaleAbsolute(70f, 50f);
document.add(image);
response.flushBuffer();