JAVA资格认证-Java文件操作增强工具

1、JAVA资格认证:Java文件操作增强工具下面是的一个解决方案，借助Apache Commons IO工具包来简洁实现文件(夹)的复制、移动、删除、猎取大小等操作。import org.apache mons.io.FileUtils；import org.apache mons.io.filefilter.*；import org.apache mons.logging.Log；import org.apache mons.logging.LogFactory；import java.io.*；/*文件工具箱*/public final class FileToolkit private s

2、tatic final Log log =LogFactory.getLog(FileToolkit.class)；/*复制文件或者名目，复制前后文件完全一样。* param resFilePath 源文件路径param distFolder 目标文件夹IOException当操作发生特别时抛出*/public static void copyFile(String resFilePath, StringdistFolder) throws lOException File resFile = new File(resFilePath)；File distFile = new File(dis

3、tFolder)；if (resFile.isDirectory() FileUtils.copyDirectoryToDirectory(resFile, distFile)； else if (resFile.isFile() FileUtils.copyFileToDirectory(resFile, distFile, true)；/*删除一个文件或者名目*param targetPath文件或者名目路径IOException当操作发生特别时抛出*/public static void deleteFile(String targetPath) throwslOException Fi

4、le targetFile = new File(targetPath)；if (targetFile.isDirectory() FileUtils.deleteDirectory(targetFile)； else if (targetFile.isFile() targetFile.delete()；/*移动文件或者名目，移动前后文件完全一样，假如目标文件夹不存在则创立。*param resFilePath 源文件路径param distFolder 目标文件夹IOException当操作发生特别时抛出*/public static void moveFile(String resFil

5、ePath, StringdistFolder) throws lOException File resFile = new File(resFilePath)；File distFile = new File(distFolder)；if (resFile.isDirectory() FileUtils.moveDirectoryToDirectory(resFile, distFile, true)； else if (resFile.isFile() FileUtils.moveFileToDirectory(resFile, distFile, true)；/*重命名文件或文件夹*pa

6、ram resFilePath 源文件路径param newFileName 重命名return操作胜利标识*/public static boolean renameFile(String resFilePath, StringnewFileName) StringnewFilePath=StringToolkit.formatPath(StringToolkit.getParentPath(resFilePath) + / + newFileName)；File resFile = new File(resFilePath)；File newFile = new File(newFileP

7、ath)；return resFile.renameTo(newFile)；/*读取文件或者名目的大小*param distFilePath目标文件或者文件夹return文件或者名目的大小，假如猎取失败，则返回-1*/public static long genFileSize(String distFilePath) File distFile = new File(distFilePath)；if (distFile.isFile() return distFile.length()； else if (distFile.isDirectory() return FileUtils.siz

8、eOfDirectory(distFile)；return -1L；/*推断一个文件是否存在param filePath 文件路径return存在返回true，否则返回false*/public static boolean isExist(String filePath) return new File(filePath).exists()；/*本地某个名目下的文件列表(不递归)*param folder ftp上的某个名目param suffix文件的后缀名(比方.mov.xml)return文件名称列表*/public static String listFilebySuffix(Str

9、ing folder, Stringsuffix) lOFileFilter fileFilterl = new SuffixFileFilter(suffix)；lOFileFilter fileFilter2 = newNotFileFilter(DirectoryFileFilter.INSTANCE)；FilenameFilter filenameFilter = new AndFileFilter(fileFilter1,fileFilter2)；return new File(folder).list(filenameFilter)；/*将字符串写入指定文件(当指定的父路径中文件夹

10、不存在时，会限度去创立，以保证保存胜利！)*param res原字符串param filePath 文件路径return胜利标记*/public static boolean string2File(String res, String filePath)boolean flag = true；BufferedReader bufferedReader = null；BufferedWriter bufferedWriter = null；try File distFile = new File(filePath)；if(!distFile.getParentFile().exists()distFile.getParentFile().mkdirs()；bufferedReader = new BufferedReader(new StringReader(res)；bufferedWriter = new BufferedWriter(new FileWriter(distFile)；char buf = new char1024； /字符缓冲区int len；while (len = bufferedReader.read(buf) != -1) b