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优化CAD 释放资源方法

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优化CAD 释放资源方法

Signed-off-by: 高雄 <admin@cxcp.com>
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高雄 2023-05-12 01:50:56 +00:00 committed by Gitee
parent f74d93a835
commit 1581fd277f
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1 changed files with 25 additions and 14 deletions
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39
server/src/main/java/cn/keking/service/FileHandlerService.java
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@ -15,12 +15,13 @@ import com.aspose.cad.Image;
import com.aspose.cad.LoadOptions;
import com.aspose.cad.imageoptions.CadRasterizationOptions;
import com.aspose.cad.imageoptions.PdfOptions;
import com.itextpdf.text.exceptions.BadPasswordException;
import com.itextpdf.text.pdf.PdfReader;
import org.apache.commons.lang3.exception.ExceptionUtils;
import org.apache.pdfbox.pdmodel.PDDocument;
import org.apache.pdfbox.rendering.ImageType;
import org.apache.pdfbox.rendering.PDFRenderer;
import org.apache.pdfbox.tools.imageio.ImageIOUtil;
import org.apache.poi.EncryptedDocumentException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Value;
@ -50,6 +51,7 @@ public class FileHandlerService {
private final String fileDir = ConfigConstants.getFileDir();
private final static String pdf2jpg_image_format = ".jpg";
private final CacheService cacheService;
private static final String pdf_password_msg = "password";
@Value("${server.tomcat.uri-encoding:UTF-8}")
private String uriEncoding;
@ -223,6 +225,7 @@ public class FileHandlerService {
public List<String> pdf2jpg(String pdfFilePath, String pdfName, FileAttribute fileAttribute) throws Exception {
boolean forceUpdatedCache = fileAttribute.forceUpdatedCache();
String filePassword = fileAttribute.getFilePassword();
String pdfPassword = null;
PDDocument doc = null;
PdfReader pdfReader = null;
if (!forceUpdatedCache) {
@ -256,18 +259,25 @@ public class FileHandlerService {
imageUrls.add(imageUrl);
}
try {
pdfReader = new PdfReader(pdfFilePath); //判断pdf文件是否加密 缓存不加密文件
this.addPdf2jpgCache(pdfFilePath, pageCount);
} catch (BadPasswordException e) {
} catch (Exception e) {
e.printStackTrace();
pdfReader = new PdfReader(pdfFilePath); //读取PDF文件
} catch (Exception e) { //获取异常方法 判断是否有加密字符串
Throwable[] throwableArray = ExceptionUtils.getThrowables(e);
for (Throwable throwable : throwableArray) {
if (throwable instanceof IOException || throwable instanceof EncryptedDocumentException) {
if (e.getMessage().toLowerCase().contains(pdf_password_msg)) {
pdfPassword = pdf_password_msg;
}
}
}
logger.error("Convert pdf exception, pdfFilePath：{}", pdfFilePath, e);
}finally {
if (pdfReader != null) { //关闭
pdfReader.close();
}
}
if(!pdfPassword.equals(pdf_password_msg)){ //判断是否加密文件 加密文件不缓存
this.addPdf2jpgCache(pdfFilePath, pageCount);
}
} catch (IOException e) {
logger.error("Convert pdf to jpg exception, pdfFilePath：{}", pdfFilePath, e);
throw new Exception(e);
@ -286,7 +296,7 @@ public class FileHandlerService {
* @param outputFilePath pdf输出文件路径
* @return 转换是否成功
*/
public boolean cadToPdf(String inputFilePath, String outputFilePath) {
public String cadToPdf(String inputFilePath, String outputFilePath) throws Exception {
File outputFile = new File(outputFilePath);
LoadOptions opts = new LoadOptions();
opts.setSpecifiedEncoding(CodePages.SimpChinese);
@ -300,21 +310,22 @@ public class FileHandlerService {
cadRasterizationOptions.setDrawType(1);
PdfOptions pdfOptions = new PdfOptions();
pdfOptions.setVectorRasterizationOptions(cadRasterizationOptions);
OutputStream stream;
OutputStream stream = null;
try {
stream = new FileOutputStream(outputFile);
cadImage.save(stream, pdfOptions);
stream.close();
cadImage.close();
return true;
} catch (IOException e) {
logger.error("PDFFileNotFoundException，inputFilePath：{}", inputFilePath, e);
return "null";
} finally {
if (stream != null) { //关闭
stream.close();
}
if (cadImage != null) { //关闭
cadImage.close();
}
}
return false;
return "true";
}
/**
*