// 下载文件
@Expose
public String downloadFile(int id, String fname) throws IOException {
String path = "/Fly_Flightrestrict/" + id + "/";
if (!FileHelper.existFile(path, fname)) {
Flightrestrict flightrestrict = flightrestrictDao.queryById(id);
byte[] datablock = flightrestrict.getDatablock();
FileHelper.createFile(path, fname, datablock);
}
return fname;
}
// 处理相关文件
private void fileManager(Flightrestrict item) {
String path = "/Fly_Flightrestrict/" + item.getId() + "/" + item.getFname();
FileHelper.fileToData(path);
if (FileHelper.bytes != 0) {
item.setBytes(FileHelper.bytes);
item.setDatablock(FileHelper.datablock); // 文件存储到数据库中
FileHelper.bytes = 0;
FileHelper.datablock = null;
}
}
/**
* 针对单个数据集操作 包括增删改
*
* @param details
* @throws Exception
*/
public void saveFlightrestrict(Collection<Flightrestrict> details) throws Exception {
if (null != details && details.size() > 0) {
for (Flightrestrict item : details) {
EntityState state = EntityUtils.getState(item);
if (state.equals(EntityState.NEW)) {
int tempId = item.getId();
fileManager(item);
flightrestrictDao.saveData(item);
FileHelper.changeFolderById(
"/Fly_Flightrestrict/" + tempId,
"/Fly_Flightrestrict/" + item.getId()); // 替换以临时ID命名的文件夹
} else if (state.equals(EntityState.MODIFIED)) {
fileManager(item);
flightrestrictDao.updateData(item);
} else if (state.equals(EntityState.DELETED)) {
flightrestrictDao.deleteData(item);
FileHelper.deleteFile("/Fly_Flightrestrict/" + item.getId()); // 删除相关文件
} else if (state.equals(EntityState.NONE)) {
}
}
}
}