java - 文件名的路径操作错误修复

Question

我有一段代码，我必须读取一个文件以获取其可能的内容。

我遇到了同样的路径操作错误。

PFB代码:

while ((ze = zis.getNextEntry()) != null) {
    String fileName = ze.getName();
    String esapiFileName = ESAPI.encoder().canonicalize(fileName);
    boolean esapiValidFileName = ESAPI.validator().isValidFileName("upload", esapiFileName, false);
    String _completefileNamePath = null;
    if (esapiValidFileName) {
      _completefileNamePath = _destination + esapiFileName;
      // Below line having Path Manipulation error
      FileOutputStream fos = new FileOutputStream(new File(_completefileNamePath).getCanonicalFile());
      // Path Manipulation error ends
      while ((size = zis.read(buffer, 0, buffer.length)) != -1) {
        fos.write(buffer, 0, size);
      }// while
      fos.flush();
      fos.close();
      zis.closeEntry();
    }
}

Answer 1

你的路径是相对路径还是绝对路径？

顺便说一句，在打开 FileOutputStream 之前，您实际上不需要获取规范文件:

FileOutputStream fos = new FileOutputStream(_completefileNamePath);

或

FileOutputStream fos = new FileOutputStream(new File(_completefileNamePath));

或

import java.nio.file.Files;
import java.nio.file.Paths;

while ((ze = zis.getNextEntry()) != null) {
    String fileName = ze.getName();
    String esapiFileName = ESAPI.encoder().canonicalize(fileName);
    boolean esapiValidFileName = ESAPI.validator().isValidFileName("upload", esapiFileName, false);
    String _completefileNamePath = null;
    if (esapiValidFileName) {
        _completefileNamePath = _destination + esapiFileName;
        // optional: Files.createDirectories(Paths.get(_completefileNamePath).getParent());
        Files.copy(zis, Paths.get(_completefileNamePath));
        zis.closeEntry();
    }
}