使用Java访问LDAP服务器中的数据信息

一.使用OpenDs启动LDAP服务。参阅：http://blog.csdn.net/kunshan_shenbin/archive/2007/12/20/1956093.aspx

二.导入测试数据入LDAP服务器。（可使用Softerra LDAP Administrator 3.5进行导入）数据如下，文件命名为sample.ldif：

dn: dc=example,dc=com
objectclass: top
objectclass: domain
dc: example

dn: o=MyCorp,dc=example,dc=com
objectclass: top
objectclass: organization
o: MyCorp

dn: ou=Groups,o=MyCorp,dc=example,dc=com
objectclass: top
objectclass: organizationalUnit
ou: Groups

dn: cn=Administrators,ou=Groups,o=MyCorp,dc=example,dc=com
objectclass: top
objectclass: groupOfUniqueNames
cn: Administrators
uniqueMember: uid=abrown,ou=People,o=MyCorp,dc=example,dc=com
uniqueMember: uid=bcrane,ou=People,o=MyCorp,dc=example,dc=com

dn: ou=People,o=MyCorp,dc=example,dc=com
objectclass: top
objectclass: organizationalUnit
ou: People

dn: uid=abrown,ou=People,o=MyCorp,dc=example,dc=com
objectclass: top
objectclass: person
objectclass: organizationalPerson
objectclass: inetOrgPerson
uid: abrown
givenName: Aaron
sn: Brown
cn: Aaron Brown
mail: [email protected]
userPassword: abrown
facsimiletelephonenumber: 666

dn: uid=bcrane,ou=People,o=MyCorp,dc=example,dc=com
objectclass: top
objectclass: person
objectclass: organizationalPerson
objectclass: inetOrgPerson
uid: bcrane
givenName: Brian
sn: Crane
cn: Brian Crane
mail: [email protected]
userPassword: bcrane
secretary: uid=abrown,ou=People,o=MyCorp,dc=example,dc=com

dn: uid=cdaniels,ou=People,o=MyCorp,dc=example,dc=com
objectclass: top
objectclass: person
objectclass: organizationalPerson
objectclass: inetOrgPerson
uid: cdaniels
givenName: Charlene
sn: Daniels
cn: Charlene Daniels
mail: [email protected]
userPassword: cdaniels
secretary: uid=abrown,ou=People,o=MyCorp,dc=example,dc=com

导入后数据结构如下：

Java代码如下：

package  ldap;

import  java.util.Properties;
import  javax.naming. * ;
import  javax.naming.ldap. * ;
import  javax.naming.directory. * ;

public   class  LdapClient  ... {

    public static void main(String[] args) ...{

        Properties env = new Properties();
        String adminName = "cn=Directory Manager";
        String adminPassword = "aimsora";
        String ldapURL = "LDAP://192.168.2.148:389";
        env.put(Context.INITIAL_CONTEXT_FACTORY, "com.sun.jndi.ldap.LdapCtxFactory");
    //set security credentials, note using simple cleartext authentication
        env.put(Context.SECURITY_AUTHENTICATION, "simple");
        env.put(Context.SECURITY_PRINCIPAL, adminName);
        env.put(Context.SECURITY_CREDENTIALS, adminPassword);
    //connect to my domain controller
        env.put(Context.PROVIDER_URL, ldapURL);

        try ...{
    //Create the initial directory context
            LdapContext ctx = new InitialLdapContext(env, null);

    //Create the search controls
            SearchControls searchCtls = new SearchControls();

    //Specify the search scope
            searchCtls.setSearchScope(SearchControls.SUBTREE_SCOPE);
    //specify the LDAP search filter
            //String searchFilter = "(&(objectCategory=person)(objectClass=user)(name=004*))";
            String searchFilter = "(sn=Brown)";
            
    //Specify the Base for the search
            String searchBase = "ou=People,o=MyCorp,dc=example,dc=com";
    //initialize counter to total the group members
            int totalResults = 0;
    //Specify the attributes to return
            String returnedAtts[] = ...{"mail"};
            searchCtls.setReturningAttributes(returnedAtts);

    //Search for objects using the filter
            NamingEnumeration answer = ctx.search(searchBase, searchFilter,
                                                  searchCtls);
    //Loop through the search results
            while (answer.hasMoreElements()) ...{
                SearchResult sr = (SearchResult) answer.next();
                System.out.println(">>>" + sr.getName());
                //Print out the groups
                Attributes attrs = sr.getAttributes();
                if (attrs != null) ...{
                    try ...{
                        for (NamingEnumeration ae = attrs.getAll(); ae.hasMore(); ) ...{
                            Attribute attr = (Attribute) ae.next();
                            System.out.println("AttributeID: " + attr.getID());
                            for (NamingEnumeration e = attr.getAll(); e.hasMore();
                                    totalResults++) ...{
                                System.out.println("Attributes:"+e.next());                            
                            }
                        }
                    } catch (NamingException e) ...{
                        e.printStackTrace();
                        System.err.println("Problem listing membership: " + e);
                    }
                }
            }
            System.out.println("Total groups: " + totalResults);
            ctx.close();
        }catch (NamingException e) ...{
            e.printStackTrace();
            System.err.println("Problem searching directory: " + e);
        }
    }
}

输出结果：

>>>uid=abrown
AttributeID: mail
Attributes:[email protected]
Total groups: 1