retrive jpg image from ldap?

[fausto]

Hi all!

I need retrive a jpg image from ldap, but when I cast the object to byte[] an CastExeption is throw. Please, could anyone help me?

public Object mapFromAttributes(Attributes attributes) throws NamingException 
{
		
	Attribute ldapAtributo = attributes.get("photo");
	if(ldapAtributo != null){
		
		byte[] photo = (byte[])ldapAtributo.get();
	}
}

* Sorry for my poor English
Thanks

[rasky]

Try debugging and checking the class of the object before casting.

[fausto]

The type is String (photo instanceof String return true). But in ldap these photos was inserted in the binary mode.

How I inform to LdapTemplate the type of the attribute? In this case byte[] (I think)...

[Aditi]

Why don't you convert the String to byte[] ?

[fausto]

Because a ClassCastException is throw.
The attributes.get("photo").get() return an Object in default. But in really it's a String! I dont understant why the binary attribute in LDAP return in this type. I need do any configuration in spring ldap? Do you have a example for me?
The ldap is Oracle Internet Directory.

*Sorry, the getBytes() String's method work ok, but the byte[] is not a valid jpg image.
The

ImageIcon icone = new ImageIcon(foto);

not show any image

[Aditi]

Sorry I dont have access to Oracle LDAP directory but if it is an Octet String type then I cant fathom the problem. I have worked on fetching X509certificates from Active Directory and I was able to get bytes in correct format. I dont think it is Spring-LDAP issue.

[fausto]

Ok, I will talk to ldap production team, asking if exist this Octet String type in Oracle ldap. Later I report the result here

Thanks

[fausto]

Apparently is necessary config the InitialDirContext environment putting this value ("java.naming.ldap.attributes.binary", "workphoto"). Them the cast for Object attribute type to byte[] will work fine.

Anyone could help me for this configuration? where I do this? In the applicationContext.xml?

[rasky]

There is a "baseEnvironment" property on AbstractContextSource (LdapContextSource) which can be used for supplying custom properties to be used when creating DirContext instances.

[fausto]

Thanks! Now it's working!!!

I add these lines in applicationContext.xml (LdapContextSource bean)

<property name="baseEnvironmentProperties">
	<map><entry>
		<key><value>java.naming.ldap.attributes.binary</value></key>
			<value>workphoto</value>
	</entry></map>
</property>

The casting from Object to byte[] works fine!