lsm/file-online-preview
1
0
Fork 0
mirror of https://gitee.com/kekingcn/file-online-preview.git synced 2025-06-28 13:34:24 +08:00
Code Issues Actions Packages Projects Releases Wiki Activity

调整 tif文件生成图片 添加后缀 防止同名产生 简化代码

Browse Source
This commit is contained in:
gaoxiongzaq 2023-04-24 15:36:01 +08:00
parent 8649f20841
commit a1abdfb70a
2 changed files with 28 additions and 50 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
server/src/main/java/cn/keking/service/impl/TiffFilePreviewImpl.java
View File

@ -49,7 +49,7 @@ public class TiffFilePreviewImpl implements FilePreview {
return TIFF_FILE_PREVIEW_PAGE; return TIFF_FILE_PREVIEW_PAGE;
} else if ("jpg".equalsIgnoreCase(tifPreviewType) || "pdf".equalsIgnoreCase(tifPreviewType)) { } else if ("jpg".equalsIgnoreCase(tifPreviewType) || "pdf".equalsIgnoreCase(tifPreviewType)) {
String pdfName = fileName.substring(0, fileName.lastIndexOf(".")) + suffix +"." + "pdf" ; //生成文件添加类型后缀 防止同名文件 String pdfName = fileName.substring(0, fileName.lastIndexOf(".")) + suffix +"." + "pdf" ; //生成文件添加类型后缀 防止同名文件
String jpgName = fileName.substring(0, fileName.lastIndexOf(".")) + suffix +"." + "jpg" ; //生成文件添加类型后缀 防止同名文件 String jpgName = fileName.substring(0, fileName.lastIndexOf(".")) + suffix; //生成文件添加类型后缀 防止同名文件
String strLocalTif = fileDir + fileName; String strLocalTif = fileDir + fileName;
String outFilePath = fileDir + pdfName; String outFilePath = fileDir + pdfName;
if ("pdf".equalsIgnoreCase(tifPreviewType)) { if ("pdf".equalsIgnoreCase(tifPreviewType)) {
@ -88,10 +88,8 @@ public class TiffFilePreviewImpl implements FilePreview {
} }
strLocalTif = response.getContent(); strLocalTif = response.getContent();
} }
// 以JPG模式预览的过程
String strJpgFilePathName = fileDir + jpgName;
// 将tif转换为jpg，返回转换后的文件路径、文件名的list // 将tif转换为jpg，返回转换后的文件路径、文件名的list
List<String> listPic2Jpg = ConvertPicUtil.convertTif2Jpg(strLocalTif, strJpgFilePathName); List<String> listPic2Jpg = ConvertPicUtil.convertTif2Jpg(strLocalTif, jpgName);
// 将返回页面的图片url的list对象 // 将返回页面的图片url的list对象
List<String> listImageUrls = new ArrayList<>(); List<String> listImageUrls = new ArrayList<>();
// 循环，拼装url的list对象 // 循环，拼装url的list对象

26
server/src/main/java/cn/keking/utils/ConvertPicUtil.java
View File

@ -45,46 +45,26 @@ public class ConvertPicUtil {
return null; return null;
} }
strInputFile = strInputFile.replaceAll("\\\\", "/"); strInputFile = strInputFile.replaceAll("\\\\", "/");
strOutputFile = strOutputFile.replaceAll("\\\\", "/");
FileSeekableStream fileSeekStream = null; FileSeekableStream fileSeekStream = null;
try { try {
JPEGEncodeParam jpegEncodeParam = new JPEGEncodeParam(); JPEGEncodeParam jpegEncodeParam = new JPEGEncodeParam();
TIFFEncodeParam tiffEncodeParam = new TIFFEncodeParam(); TIFFEncodeParam tiffEncodeParam = new TIFFEncodeParam();
tiffEncodeParam.setCompression(TIFFEncodeParam.COMPRESSION_GROUP4); tiffEncodeParam.setCompression(TIFFEncodeParam.COMPRESSION_GROUP4);
tiffEncodeParam.setLittleEndian(false); tiffEncodeParam.setLittleEndian(false);
String jpgname = strInputFile.replace(fileDir.replace("\\","/"), "");
int index = jpgname.lastIndexOf(".");
String strFilePrefix = jpgname.substring(0, index);
fileSeekStream = new FileSeekableStream(strInputFile); fileSeekStream = new FileSeekableStream(strInputFile);
ImageDecoder imageDecoder = ImageCodec.createImageDecoder("TIFF", fileSeekStream, null); ImageDecoder imageDecoder = ImageCodec.createImageDecoder("TIFF", fileSeekStream, null);
int intTifCount = imageDecoder.getNumPages(); int intTifCount = imageDecoder.getNumPages();
logger.info("该tif文件共有【" + intTifCount + "】页"); logger.info("该tif文件共有【" + intTifCount + "】页");
String strJpgPath; String strJpgPath = fileDir+strOutputFile;
String strJpgUrl;
if (intTifCount == 1) {
// 如果是单页tif文件，则转换的目标文件夹就在指定的位置
strJpgPath = strOutputFile.substring(0, strOutputFile.lastIndexOf("/"));
} else {
// 如果是多页tif文件，则在目标文件夹下，按照文件名再创建子目录，将转换后的文件放入此新建的子目录中
strJpgPath = strOutputFile.substring(0, strOutputFile.lastIndexOf("."));
}
// 处理目标文件夹，如果不存在则自动创建 // 处理目标文件夹，如果不存在则自动创建
File fileJpgPath = new File(strJpgPath); File fileJpgPath = new File(strJpgPath);
if (!fileJpgPath.exists() && !fileJpgPath.mkdirs()) { if (!fileJpgPath.exists() && !fileJpgPath.mkdirs()) {
logger.error("{} 创建失败", strJpgPath); logger.error("{} 创建失败", strJpgPath);
} }
// 循环，处理每页tif文件，转换为jpg // 循环，处理每页tif文件，转换为jpg
for (int i = 0; i < intTifCount; i++) { for (int i = 0; i < intTifCount; i++) {
String strJpg; String strJpg= strJpgPath + "/" + i + ".jpg";
if (intTifCount == 1) { String strJpgUrl = strOutputFile + "/" + i + ".jpg";
strJpg = strJpgPath + "/" + strFilePrefix + ".jpg";
strJpgUrl = strFilePrefix + ".jpg";
} else {
strJpg = strJpgPath + "/" + i + ".jpg";
strJpgUrl = strFilePrefix + "/" + i + ".jpg";
}
File fileJpg = new File(strJpg); File fileJpg = new File(strJpg);
// 如果文件不存在，则生成 // 如果文件不存在，则生成
if (!fileJpg.exists()) { if (!fileJpg.exists()) {