ldap怎么查找一个人所在部门，用Java访问的

ldap怎么查找一个人所在部门，用Java访问的

* 获得LDAP连接（不通过连接池,直接获得连接）
* @return
* @throws Exception
*/
private javax.naming.directory.DirContext getDirContext() throws Exception
{
DirContext ctx = null;
java.util.Hashtable env = new java.util.Hashtable();
env.put(Context.INITIAL_CONTEXT_FACTORY, "com.sun.jndi.ldap.LdapCtxFactory");
env.put(Context.PROVIDER_URL, "ldap://localhost:389");
env.put(Context.SECURITY_AUTHENTICATION, "simple");
env.put(Context.SECURITY_PRINCIPAL, user);
env.put(Context.SECURITY_CREDENTIALS, pwd);
ctx = new InitialDirContext(env);
return ctx;
}


public javax.naming.NamingEnumeration getFilter(String DN,String filter,int myserach) throws Exception
{
DirContext ctx = getDirContext();
try
{
NamingEnumeration em;
SearchControls con = new SearchControls();
con.setSearchScope(myserach);
em = ctx.search(DN, filter, con);
return em;
}
finally
{
//
}
}

public java.util.Vector getfilterNodes(String dn,String filter,int level) throws Exception
{
java.util.Vector ve=new java.util.Vector();
NamingEnumeration em=getFilter(dn,filter,level);
while(em!=null && em.hasMoreElements())
{
SearchResult rs=(SearchResult)em.nextElement();
String db=rs.getName();
if (db.trim().equals(""))
ve.add(dn);
else
ve.add(db+","+dn);
}
return ve;
}