How do i read .ldif file through java?

[R . Ravi Kumar]

Hi,

I want to read the data from .ldif file using java. how can i read it. The contents of .ldif file are like:

dn: cn=ravi ravi,mail=[e-mail]
objectclass: top
objectclass: person
objectclass: organizationalPerson
objectclass: inetOrgPerson
objectclass: mozillaAbPersonAlpha
givenName: ravi
sn: ravi
cn: ravi ravi
mozillaNickname: ravi
mail: [e-mail]
modifytimestamp: 0Z
...
In this i want to get the value mail attribue. how can i get that value? Please help.

Thanks in advance.

[Campbell Ritchie]

Quickest way might be to read each line in the usual fashion and look for the line beginning mail:

It would be better to put the whole lot into a Map like a properties file but that won't work because there are five lines with the same first part "objectclass".

[Rob Spoor]

java.util.Properties supports : as well as = as separator.

[Campbell Ritchie]

But will properties support several objectclass keys?

[Rob Spoor]

Hadn't seen those, and the answer is no.

So reading line for line, then splitting at :

Apache Commons Collections has an interface called MultiMap that could store it all. Alternatively, just using a Map<String,List> or Map<String,Collection> could be useful as well.

[Ove Lindström]

I use OpenLDAP or Apache Directory to read my ldif-files...
[ September 29, 2008: Message edited by: Ove Lindstr�m ]

[jijun lx]

a library is provided by apache directory.
maybe the url follows will do a favor to you

http://grepcode.com/snapshot/repo1.maven.org/maven2/org.apache.directory.shared/shared-ldif/0.9.19
sample:

        LdifReader reader = new LdifReader();
        List<LdifEntry> entries = reader.parseLdifFile("/home/myname/export.ldif");
        String dn = "cn=ravi ravi,mail=[e-mail]";
        //iterate the entries
        for (LdifEntry entry : entries) {
            final String name = entry.getDn().getName();
            if (name.equals(dn)) {
                System.out.println(entry.get("cn"));
                System.out.println(entry.get("mail"));
                System.out.println(entry.get("mozillaNickname"));
            }
        }

---------
Jijun
Best regards

[Campbell Ritchie]

Welcome to the Ranch