itext根据模板导出pdf报错：pdf header signature not found

[锵锵锵yyds]

public void pdfOut(List<Map<String, Object>> list) {
String Template = "E:\\eclipse\\pdfTest\\gwpyrybab.pdf";
String Template2 = "E:\\eclipse\\pdfTest\\gwpyrybabTemp.pdf";
String newPath = "E:\\eclipse\\pdfTest\\gwpyrybabOutTemp.pdf";
List<PdfReader> prList = new ArrayList<PdfReader>();
try {
if(list.size() <= 18) {
PdfReader reader = new PdfReader(Template);
PdfReader reader1 = null;
ByteArrayOutputStream bos = new ByteArrayOutputStream();
PdfStamper ps = new PdfStamper(reader, bos);
AcroFields afs = ps.getAcroFields();
for(int i = 0;i < list.size();i++) {
Map<String, Object> temMap = list.get(i);
for(String key : temMap.keySet()) {
afs.setField(key, (String)temMap.get(key));
}
}
ps.setFormFlattening(true);// 如果为false，生成的PDF文件可以编辑，如果为true，生成的PDF文件不可以编辑
ps.close();
reader1 = new PdfReader(bos.toByteArray());
prList.add(reader1);
}else {
//前18个数据填充到第一个模板里面
PdfReader reader = new PdfReader(Template);
PdfReader reader1 = null;
ByteArrayOutputStream bos = new ByteArrayOutputStream();
PdfStamper ps = new PdfStamper(reader, bos);
AcroFields afs = ps.getAcroFields();
for(int i = 0;i < 18;i++) {
Map<String, Object> temMap = list.get(i);
for(String key : temMap.keySet()) {
afs.setField(key, (String)temMap.get(key));
}
}
ps.setFormFlattening(true);// 如果为false，生成的PDF文件可以编辑，如果为true，生成的PDF文件不可以编辑
ps.close();
reader1 = new PdfReader(bos.toByteArray());
prList.add(reader1);
int num = list.size() / 18 - 1; //循环的次数(第一个模板已经渲染好了，所以要减一)
if(list.size() % 18 > 0) {
num ++;
}
int index = 18;
while(num > 0) {
ByteArrayOutputStream bos2 = new ByteArrayOutputStream();
PdfReader reader2 = new PdfReader(Template2); //读取第二个模板
PdfStamper ps2 = new PdfStamper(reader2, bos2);
AcroFields afs2 = ps2.getAcroFields(); //获取第二个模板的表单域
if(index + 18 < list.size()) {
for(int j = index;j < index + 18;j++) {
Map<String, Object> temMap = list.get(j);
for(String key : temMap.keySet()) {
afs2.setField(key, (String)temMap.get(key));
}
}
index += 18;
}else {
for(int j = index;j < list.size();j++) {
Map<String, Object> temMap = list.get(j);
for(String key : temMap.keySet()) {
afs2.setField(key, (String)temMap.get(key));
}
}
index = list.size()-1;
}
ps.setFormFlattening(true);// 如果为false，生成的PDF文件可以编辑，如果为true，生成的PDF文件不可以编辑
ps.close();
reader2.close();
PdfReader readerTem = new PdfReader(bos2.toByteArray()); //报错的地方
prList.add(readerTem);
readerTem.close();
num--;
}
}
if(prList.size() > 0) {
Document document = new Document();
PdfCopy copy = new PdfCopy(document, new FileOutputStream(newPath));
document.open();
for(int j = 0;j < prList.size();j++) {
PdfReader pr = prList.get(j);
document.newPage();
PdfImportedPage page = copy.getImportedPage(pr, j+1);
copy.addDocument(pr);
copy.addPage(page);
}
document.close();
}else {
System.out.println("数组中没有PdfReader");
}
}catch (Exception e) {
System.out.println(e);
}


}

上面是我写的生成pdf的方法，我有两个模板，然后在pdfreader第二个模板的时候报错：PDF header signature not found.请问我该怎么解决呢，求大佬指教

[小范同学_]

唉 一样