批量导出pdf为zip文件（可以修改zip中pdf名称）

清疚 2024-03-23 19:06 79阅读 0赞

#### 核心代码 ####

public static void compressZip1(HashMap<String,File> map, String rootPath, String zipFileName) throws FileNotFoundException {
            FileOutputStream fileOutputStream = new FileOutputStream(zipFileName);
            ZipOutputStream zipOutputStream = new ZipOutputStream(new FileOutputStream(rootPath));
    
            try {
                for (Map.Entry<String, File> entry : map.entrySet()) {
                    String fileName = entry.getKey(); // 获取文件名
                    File file = entry.getValue(); // 获取文件
    
                    FileInputStream fileInputStream = new FileInputStream(file);
                    zip1(fileInputStream, zipOutputStream, fileName, file);
                    fileInputStream.close();
                }
    
                zipOutputStream.close();
                fileOutputStream.close();
            } catch (IOException e) {
                log.error("context", e);
            }finally {
                try {
                    zipOutputStream.close();
                    fileOutputStream.close();
                } catch (IOException e) {
                    log.error("context", e);
                }
            }
        }
    
        private static void zip1(FileInputStream fileInputStream,ZipOutputStream zipOutputStream,  String fileName, File file) throws IOException {
            // 设置自定义pdf文件名
            String newFileName = fileName + file.getName();
            ZipEntry zipEntry = new ZipEntry(newFileName);
            zipOutputStream.putNextEntry(zipEntry);
    
            byte[] buffer = new byte[1024*5];
            BufferedInputStream bufferStream  = new BufferedInputStream(fileInputStream);
            int length;
            // 输入缓冲流
                int read = 0;
    //        while ((length = fileInputStream.read(buffer)) > 0) {
            while ((read = bufferStream.read(buffer)) != -1) {
                zipOutputStream.write(buffer, 0, read);
            }
    
            zipOutputStream.closeEntry();
            bufferStream.close();
        }

### 注意！！！ ###

这里需要使用**BufferedInputStream，**如果用的是**FileInputStream****就算flush**有时候还是会文件损坏，我没再深点测试这个为啥得BufferedInputStream