public static List<String> pdf2images(String inPath, Integer start, Integer end) {
if (!getLicense()) { // 验证License 若不验证则转化出的会有水印产生
return null;
}
//文件 获取文件名字
File oriFile = new File(inPath);
String name = oriFile.getName();
//截取不带后缀名的字段
String fileName = name.substring(0, name.lastIndexOf("."));
//文件上传路径
String parent = oriFile.getParent();
//创建同名文件夹
new File(parent + "/" + fileName).mkdir();
Document doc1 = new Document(inPath); // inPath是将要被转化的文档
PageCollection pages = doc1.getPages();
log.info("pages:" + pages.size());
// ---此处限制文件页码最大300页，超出300页按异常处理
Integer exceptionPages = 300;
if (exceptionPages < pages.size()) {
throw new RuntimeException("页码过大，请核实文件是否正常");
}
if (Objects.isNull(start) || start.equals(0)) {
start = 1;
}
if (Objects.isNull(end) || end > pages.size()) {
end = pages.size();
}
if (start > end) {
log.error("页数错误");
return null;
}
List<String> jpgList = new ArrayList<>(pages.size());
File file = null;
com.aspose.pdf.devices.Resolution reso = new com.aspose.pdf.devices.Resolution(140);
com.aspose.pdf.devices.JpegDevice jpegDevice = new com.aspose.pdf.devices.JpegDevice(reso, 60);
// 下标从1开始
for (int i = start; i <= end; i++) {
file = new File(parent + "/" + fileName + "/" + i + ".jpg"); // 新建一个文件
log.info(i + " pdf => jpg :" + file.getAbsolutePath());
try (FileOutputStream os = new FileOutputStream(file)) {
Page item = pages.get_Item(i);
jpegDevice.process(item, os);
} catch (Exception e) {
e.printStackTrace();
throw new RuntimeException(e.getMessage());
}
jpgList.add(file.getAbsolutePath());
}
doc1.close();
return jpgList;
}
Would you please share your sample PDF document for our reference? We will test the scenario in our environment and address it accordingly.
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We have opened the following new ticket(s) in our internal issue tracking system and will deliver their fixes according to the terms mentioned in Free Support Policies.
Issue ID(s): PDFJAVA-43247
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