我有一个项目，给我一个ID，然后使用该ID查找文件路径并对其进行处理...这些文件位于各种装入的驱动器上，因此我正在使用SMBJ Java库来访问它们。
我遇到的问题是某些文件（大多数）正在使用DFS挂载点...现在，这本身本身就不是问题，但显然SMBJ库似乎为每个不同的DFS创建嵌套会话。位置。因此，即使我在读取完文件后关闭了实际的FILE，DiskSession对象也将保留所有这些嵌套的会话……最终还是通过DFS配置设置或通过这些库，我碰到了一些问题并停止允许创建更多会话。
我正在处理数十万条记录，而“崩溃”似乎发生在正在处理的500条记录（会话）附近。我看不到任何明显可见的代码来显式关闭这些嵌套会话。.实际上，我从DiskShare对象的外部完全看不到它们的外部访问。
我缺少某种设置来最大化其保持的会话吗？除了我自己管理某种计数器，关闭和重新打开会话/连接之外，我无所适从。
有人知道我在这里想念的吗？
代码如下：
public class Smb {
private static SMBClient client;
private static String[] DFSMounts = {"DFS1","dfs1"};
private static final Logger Log = LoggerFactory.getLogger(Smb.class);
private static HashMap<String,DiskShare> shares = new HashMap<>();
private static HashMap<String,Connection> connections = new HashMap<>();
private static HashMap<Connection,Session> sessions = new HashMap<>();
private synchronized static SMBClient getClient(){
if (client == null){
SmbConfig cfg = SmbConfig.builder().withDfsEnabled(true).build();
client = new SMBClient(cfg);
}
return client;
}
private synchronized static Connection getConnection(String realDomainName) throws IOException{
Log.info("DOMAIN NAME "+realDomainName);
Connection connection = (connections.get(realDomainName) == null) ? client.connect(realDomainName) : connections.get(realDomainName);
if(!connection.isConnected()) {
connection.close();
sessions.remove(connection);
connection = client.connect(realDomainName);
}
// connection = client.connect(realDomainName);
connections.put(realDomainName,connection);
return connection;
}
private synchronized static Session getSession(Connection connection,SMBClient client){
Session session = sessions.get(connection);
if(session==null) {
PropertiesCache props = PropertiesCache.getInstance();
String sambaUsername = props.getProperty("smb.user");
String sambaPass = props.getProperty("smb.password");
String sambaDomain = props.getProperty("smb.domain");
Log.info("CLIENT " + client);
session = (sessions.get(connection) != null) ? sessions.get(connection) : connection.authenticate(new AuthenticationContext(sambaUsername, sambaPass.toCharArray(), sambaDomain));
sessions.put(connection, session);
}
return session;
}
@SuppressWarnings("UnusedReturnValue")
public synchronized static DiskShare getShare(String domainName, String shareName) throws SmbException
{
DiskShare share = shares.get(domainName+"/"+shareName);
if((share!=null)&&(!share.isConnected())) share=null;
if(share == null){
try {
PropertiesCache props = PropertiesCache.getInstance();
String sambaUsername = props.getProperty("smb.user");
String sambaPass = props.getProperty("smb.password");
String sambaDomain = props.getProperty("smb.domain");
String dfsIP = props.getProperty("smb.sambaIP");
SMBClient client = getClient();
String realDomainName = (Arrays.stream(DFSMounts).anyMatch(domainName::equals)) ? dfsIP: domainName;
Connection connection = getConnection(realDomainName);
Session session = getSession(connection,client);
share = (DiskShare) session.connectShare(shareName);
shares.put(domainName+"/"+shareName,share);
}
catch (Exception e){
Log.info("EXCEPTION E "+e);
Log.info("EX "+e.getMessage());
throw new SmbException();
}
}
return(share);
}
public static String fixFilename(String filename){
String[] parts = filename.split("\\\\");
ArrayList<String> partsList = new ArrayList<>(Arrays.asList(parts));
partsList.remove(0);
partsList.remove(0);
partsList.remove(0);
partsList.remove(0);
return String.join("/",partsList);
}
public static File open(String filename) throws SmbException {
String[] parts = filename.split("\\\\");
String domainName = parts[2];
String shareName = parts[3];
DiskShare share = getShare(domainName,shareName);
Set<SMB2ShareAccess> s = new HashSet<>();
s.add(SMB2ShareAccess.ALL.iterator().next());
filename = fixFilename(filename);
return(share.openFile(filename, EnumSet.of(AccessMask.GENERIC_READ), null, s, SMB2CreateDisposition.FILE_OPEN, null));
}
}
这是使用OPEN的方式（显示使用后将关闭文件）：
String filename = documents.get(0).getUNCPath();
try (File f = Smb.open(filename)){
Process the file code...
f.closeSilently();
}
和：
while(i.hasNext()){
String filename = (String)i.next();
Log.info("FILENAME "+filename);
try(File f = Smb.open(filename)){
Process the file stuff here
}
}
最佳答案
我为SMBJ创建了PR，从而改变了这种情况。它将嵌套会话重用于同一主机。我本人已成功使用它来避免出现完全相同的问题。 https://github.com/hierynomus/smbj/pull/489