@Override
public boolean setCache(CacheSelector cacheSelector, Object cacheValue) throws Exception {
long timeout = cacheSelector.getTimeout();
String filePath = this.getRealFilePath(cacheSelector.getCacheKey());
boolean isSave =
FileOperate.saveObjectToFile(filePath, new FileCacheObject(timeout, cacheValue));
if (isSave && timeout > 0) {
FileCacheMonitor.getInstance().setFileCacheTime(filePath, timeout);
}
return isSave;
}
@Override
public Object getCache(CacheSelector cacheSelector) throws Exception {
File file = new File(this.getRealFilePath(cacheSelector.getCacheKey()));
if (!file.exists()) {
return null;
}
Object fileObj = FileOperate.getFileObject(file); // 文件中保存的对象
Object fileStorageObject = null; // 文件中保存的对象
if (null != fileObj && fileObj instanceof FileCacheObject) {
FileCacheObject fcObject = (FileCacheObject) fileObj;
// 缓存未过期才能获取对象
if (!fcObject.isCacheExpire()) {
fileStorageObject = fcObject.getStorageObject();
}
}
// 如果不存在或已过期则删除
if (null == fileStorageObject) {
file.delete();
}
return fileStorageObject;
}