如题。Java代码如下
public class MergePdfs {
public static void mergePdfFiles(String[] files, String savepath) throws DocumentException {
try {
// ITextFontResolver fontResolver = renderer.getFontResolver();
// fontResolver.addFont("c:/Windows/Fonts/simsun.ttc", BaseFont.IDENTITY_H,
// BaseFont.NOT_EMBEDDED);
//
Document document = new Document(new PdfReader(files[0]).getPageSize(1));
File outFile = new File(savepath);
if(!outFile.exists()){
outFile.createNewFile();
}
PdfCopy copy = new PdfCopy(document, new FileOutputStream(outFile));
document.open();
for (int i = 0; i < files.length; i++) {
PdfReader reader = new PdfReader(files[i]);
int n = reader.getNumberOfPages();
for (int j = 1; j <= n; j++) {
document.newPage();
PdfImportedPage page = copy.getImportedPage(reader, j);
copy.addPage(page);
}
}
document.close();
} catch (IOException e) {
e.printStackTrace();
} catch (DocumentException e) {
e.printStackTrace();
}
}
}
报错显示：
com.itextpdf.text.exceptions.InvalidPdfException: PDF header signature not found.
at com.itextpdf.text.pdf.PRTokeniser.getHeaderOffset(PRTokeniser.java:227)
at com.itextpdf.text.pdf.PdfReader.getOffsetTokeniser(PdfReader.java:486)
at com.itextpdf.text.pdf.PdfReader.<init>(PdfReader.java:176)
at com.itextpdf.text.pdf.PdfReader.<init>(PdfReader.java:219)
at com.itextpdf.text.pdf.PdfReader.<init>(PdfReader.java:207)
at com.itextpdf.text.pdf.PdfReader.<init>(PdfReader.java:197)
at cn.yitongwang.utils.MergePdfs.mergePdfFiles(MergePdfs.java:18)
at cn.yitongwang.service.CommonServiceImpl.slectAllPdfTasks(CommonServiceImpl.java:1487)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:296)
at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:177)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:144)
at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:107)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:166)
at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)
at com.sun.proxy.$Proxy8.slectAllPdfTasks(Unknown Source)
at cn.yitongwang.utils.PDFtransferEntrance.main(PDFtransferEntrance.java:14)
怎么解决！！
