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package org.myframework.util;
import java.io.File;
import java.util.Date;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.velocity.util.StringUtils;
public class FileUtil {
private static final Log log = LogFactory.getLog(FileUtil.class);
public static String FILE ="FILE_" ;
/**创建目录
* @param filePath
*/
public static void createDir(String filePath) {
if (!new File(filePath).mkdirs())
log.error("创建目录 fail");
else
log.warn("创建目录 success");
}
/**根据文件绝对路径来创建文件
* @param file
* @throws Exception
*/
public static void createFile(String file) throws Exception {
File f = new File(file);
if (f.exists()) {
log.debug("文件名：" + f.getAbsolutePath());
log.debug("文件大小：" + f.length());
} else {
f.getParentFile().mkdirs();
f.createNewFile();
}
}
/**根据全类名获得文件路径
* @param className 类名
* @return
*/
public static String getJavaFileName(String className) {
log.debug("className :" +className);
String javaFileName = StringUtils.getPackageAsPath(getPackage(className)) +getClassName(className)+ ".java";
return javaFileName;
}
/**根据全类名获得JAVA文件所在目录
* @param className
* @return
*/
public static String getPackage(String className) {
return className.substring(0, className.lastIndexOf("."));
}
/**根据全类名获得简短类名
* @param className
* @return
*/
public static String getClassName(String className) {
return className.substring( className.lastIndexOf(".")+1);
}
/**根据文件对象获取扩展 名
* @param f
* @return
*/
public static String getExtension(File f) {
return (f != null) ? getExtension(f.getName()) : "";
}
/**根据文件名获取扩展名（默认方法）
* @param filename
* @return
*/
public static String getExtension(String filename) {
return getExtension(filename, "");
}
/**根据文件名获取扩展名，无扩展名时返回默认扩展名
* @param filename
* @param defExt
* @return
*/
public static String getExtension(String filename, String defExt) {
if ((filename != null) && (filename.length() > 0)) {
int i = filename.lastIndexOf('.');
if ((i >-1) && (i < (filename.length() - 1))) {
return filename.substring(i + 1);
}
}
return defExt;
}
/**去除给定文件名的扩展名部分
* @param filename
* @return
*/
public static String trimExtension(String filename) {
if ((filename != null) && (filename.length() > 0)) {
int i = filename.lastIndexOf('.');
if ((i >-1) && (i < (filename.length()))) {
return filename.substring(0, i);
}
}
return filename;
}
/**利用时间戳重命名中文文件
* @param fileName
* @return
*/
public static String renameFile(String prefix,String fileName) {
StringBuffer newFileName = new StringBuffer(prefix!=null?prefix:FILE);
newFileName.append(DateUtil.format(new Date(), "yyyyMMddHHmmssms"))
.append(".").append(getExtension(fileName));
return newFileName.toString();
}
/**利用时间戳重命名中文文件
* @param fileName
* @return
*/
public static String renameFile( String fileName) {
return renameFile(null,fileName);
}
/**利用时间戳重命名中文文件
* @param file
* @return
*/
public static String renameFile(String prefix,File file) {
StringBuffer newFileName = new StringBuffer(prefix!=null?prefix:FILE);
newFileName.append(DateUtil.format(new Date(), "yyyyMMddHHmmssms"))
.append(".").append(getExtension(file));
return newFileName.toString();
}
public static void main(String[] args) throws Exception {
String className = "ims.tools.web.action.taskAction";
String fileName = FileUtil.getJavaFileName(className);
log.debug(DateUtil.getNowTime());
log.debug(renameFile("abc.txt.xls"));
// System.out.println(fileName);
// FileUtils.createFile("D:/"+ fileName);
}
}