java修改文件为只读权限 |
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本文链接:https://blog.csdn.net/yaerfeng/article/details/37756043 原文:java修改文件为只读权限 代码下载地址:http://www.zuidaima.com/share/1550463260658688.htm 通过java可以修改文件为只读权限 package com.zuidaima.util.file; import java.io.File; import java.io.IOException; /** * 修改文件为只读权限 * * @author javaniu * */ public class MakeFileReadOnly { public static void main(String[] args) throws IOException { File file = new File("c:/file.txt"); // mark this file as read only, since jdk 1.2 file.setReadOnly(); if (file.canWrite()) { System.out.println("This file is writable"); } else { System.out.println("This file is read only"); } // revert the operation, mark this file as writable, since jdk 1.6 file.setWritable(true); if (file.canWrite()) { System.out.println("This file is writable"); } else { System.out.println("This file is read only"); } } } 不过,经过实际检验,上述方法虽然改变了文件的权限,但是仍然可以修改文件,然后另存为,所以上述方法并不可行!! 可靠的方法: Runtime.getRuntime().exec("chmod 777 -R " + uploadFilePath);uploadFilePath: 为要修改的文件路径
原文链接:https://blog.csdn.net/yaerfeng/article/details/37756043 |
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