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| public final class FileUtils {
private static final String PREFIX_PATH = StrUtil.format(
"{userDir}{separator}docker{separator}static-file{separator}",
MapUtil.builder("userDir", System.getProperties().get("user.dir").toString())
.put("separator", File.separator)
.build()
);
// private static String PREFIX_PATH = "/docker/static-file/";
static {
log.info("初始化文件存放路径: {}", PREFIX_PATH);
}
/**
* 保存文件
*
* @param file
* @return
*/
public static FileOperation save(MultipartFile file) {
String originalFilename = file.getOriginalFilename();
String extName = FileUtil.extName(originalFilename);
String uuid = UUID.randomUUID().toString().replace("-", "");
// File newFile = new File(PREFIX_PATH + uuid + "." + extName);
File newFile = new File(PREFIX_PATH + originalFilename);
if (newFile.exists()) {
// 存在重名文件, 则删除
newFile.deleteOnExit();
log.info("删除重名文件: " + newFile.getAbsolutePath());
}
if (!newFile.getParentFile().exists()) {
// 递归创建文件夹
log.info("创建上级目录{}", newFile.getParentFile().getAbsolutePath());
newFile.getParentFile().mkdirs();
}
try {
file.transferTo(newFile);
} catch (IOException e) {
log.warn("创建" + newFile.getAbsolutePath() + "文件失败: " + e.getMessage(), e);
return FileOperation.error(newFile, e, FileOperation.SAVE);
}
return FileOperation.ok(newFile, FileOperation.SAVE);
}
/**
* 更新文件
*
* @param path
* @param isAbsolute
* @param file
* @return
*/
public static FileOperation update(String path, boolean isAbsolute, MultipartFile file) {
File oldFile = new File(isAbsolute ? path : PREFIX_PATH + path);
if (oldFile.exists()) {
log.info("删除旧文件{}", oldFile.getAbsolutePath());
}
if (!oldFile.getParentFile().exists()) {
log.info("创建上级目录{}", oldFile.getParentFile().getAbsolutePath());
oldFile.mkdirs();
}
try {
file.transferTo(oldFile);
} catch (IOException e) {
log.warn("更新文件" + oldFile.getAbsolutePath() + "文件失败: " + e.getMessage(), e);
return FileOperation.error(oldFile, e, FileOperation.UPDATE);
}
return FileOperation.ok(oldFile, FileOperation.UPDATE);
}
/**
* 删除文件
*
* @param path
* @param isAbsolute
* @return
*/
public static FileOperation delete(String path, boolean isAbsolute) {
File file = new File(isAbsolute ? path : PREFIX_PATH + path);
if (!file.exists()) {
FileOperation error = FileOperation.error(file, new FileNotFoundException(file.getAbsolutePath()), FileOperation.DELETE);
log.warn("文件{}已被删除", error.getRelativePath());
return error;
}
file.deleteOnExit();
return FileOperation.ok(file, FileOperation.DELETE);
}
public static class FileOperation {
public static final String SAVE = "save";
public static final String UPDATE = "update";
public static final String DELETE = "delete";
private boolean ok;
private String operation;
private File file;
private String relativePath;
private Throwable cause;
public FileOperation(boolean ok, File file, Throwable cause, String operation) {
this.ok = ok;
this.file = file;
if (file.getAbsolutePath().indexOf(PREFIX_PATH) == 0) {
this.relativePath = file.getAbsolutePath().substring(PREFIX_PATH.length());
}
this.cause = cause;
this.operation = operation;
}
public boolean ok() {
return ok;
}
public String getRelativePath() {
return relativePath;
}
public String getAbsolutePath() {
return file.getAbsolutePath();
}
public Throwable getCause() {
return cause;
}
public static FileOperation ok(File file, String operation) {
return new FileOperation(true, file, null, operation);
}
public static FileOperation error(File file, Throwable cause, String operation) {
return new FileOperation(false, file, cause, operation);
}
}
}
|