Java文件操作工具类（复制、删除、重命名、创建路径）

清疚 2023-06-19 11:18 18阅读 0赞

import java.io.BufferedInputStream;
    import java.io.BufferedOutputStream;
    import java.io.File;
    import java.io.FileInputStream;
    import java.io.FileOutputStream;
    import java.io.IOException;
    
    public class FileControl { 
    
        // 文件复制
        public static boolean copyFile(String source, String copy) throws Exception { 
            source = source.replace("\\", "/");
            copy = copy.replace("\\", "/");
    
            File source_file = new File(source);
            File copy_file = new File(copy);
    
            // BufferedStream缓冲字节流
    
            if (!source_file.exists()) { 
                throw new IOException("文件复制失败：源文件（" + source_file + "） 不存在");
            }
            if (copy_file.isDirectory()) { 
                throw new IOException("文件复制失败：复制路径（" + copy_file + "） 错误");
            }
            File parent = copy_file.getParentFile();
            // 创建复制路径
            if (!parent.exists()) { 
                parent.mkdirs();
            }
            // 创建复制文件
            if (!copy_file.exists()) { 
                copy_file.createNewFile();
            }
    
            FileInputStream fis = new FileInputStream(source_file);
            FileOutputStream fos = new FileOutputStream(copy_file);
    
            BufferedInputStream bis = new BufferedInputStream(fis);
            BufferedOutputStream bos = new BufferedOutputStream(fos);
    
            byte[] KB = new byte[1024];
            int index;
            while ((index = bis.read(KB)) != -1) { 
                bos.write(KB, 0, index);
            }
    
            bos.close();
            bis.close();
            fos.close();
            fis.close();
    
            if (!copy_file.exists()) { 
                return false;
            } else if (source_file.length() != copy_file.length()) { 
                return false;
            } else { 
                return true;
            }
    
        }
    
        // 文件重命名
        public static boolean renameFile(String url, String new_name) throws Exception { 
            String old_url = url;
            old_url = old_url.replace("\\", "/");
            File old_file = new File(old_url);
            if (!old_file.exists()) { 
                throw new IOException("文件重命名失败，文件（"+old_file+"）不存在");
            }
            System.out.println(old_file.exists());
    
            String old_name = old_file.getName();
            // 获得父路径
            String parent = old_file.getParent();
            // 重命名
            String new_url = parent + "/" + new_name;
            File new_file = new File(new_url);
            old_file.renameTo(new_file);
    
            System.out.println("原文件：" + old_file.getName());
            System.out.println("新文件：" + new_file.getName());
            new_name = new_file.getName();
            old_name = old_file.getName();
            if (new_name.equals(old_name)) { 
                return false;
            } else { 
                return true;
            }
    
        }
    
        // 文件删除
        public static boolean deleteFile(String url) throws Exception { 
            url = url.replace("\\", "/");
            File file = new File(url);
    
            if (file.isFile()) { 
                if (file.exists()) { 
                    file.delete();
                }
            }else{ 
                throw new IOException("文件删除失败：（"+file+"）错误");
            }
            if (file.exists()) { 
                return false;
            } else { 
                return true;
            }
        }
    
        // 创建文件夹
        public static boolean createPath(String url) throws Exception { 
            url = url.replace("\\", "/");
            File folder = new File(url);
            if(!folder.isDirectory()){ 
                throw new IOException("创建文件夹失败：（"+folder+"）不是文件夹路径");
            }
    
            if (!folder.isFile()) { 
                if (!folder.exists()) { 
                    folder.mkdirs();
                }
            }
            // 检测是否创建成功
            if (folder.isDirectory() && folder.exists()) { 
                return true;
            } else { 
                return false;
            }
    
        }
    
    }