Facing Null pointer exception while compiling.
public class LDAP_MultiUser_Copy1 {
public static String INITCTX = "com.sun.jndi.ldap.LdapCtxFactory";
public static String MY_HOST = "ldap://singh.plm.com:3890";
public static String MY_SEARCHBASE = "cn=Public,x=X-Y,ou=people,cn=Windchill_8.0,cn=Application Services,x=x-y";
public static String MY_FILTER = "(&(objectclass=groupOfUniqueNames)(uniqueMember=";
public static String MGR_DN = "cn=Manager";
public static String MGR_PW = "ldapadmin";
//public String[] MY_FILTER2=new String[200];
public static void main(String[] args) throws IOException {
String[] MY_FILTER2=new String[900];
String[] First_Name=new String[200];
//String[] MY_FILTER2=null;
try{
String fileName="C:\\report\\report.txt";
FileReader inputFile = new FileReader(fileName);
BufferedReader bufferReader = new BufferedReader(inputFile);
String line;
FileWriter writer = new FileWriter("C:\\report\\report11.csv");
PrintWriter pwr = new PrintWriter(writer);
String fileName1="C:\\report\\report1.txt";
FileReader inputFile1 = new FileReader(fileName1);
BufferedReader bufferReader1 = new BufferedReader(inputFile1);
String line1;
int i=0;
while (((line = bufferReader.readLine()) != null) && (line1 = bufferReader1.readLine())!= null)
{
//System.out.println(line);
//System.out.println("Reading text file");
MY_FILTER2[i]=line;
//System.out.println("My_Filter2="+MY_FILTER2[i]);
//First_Name = line.split(",");
//System.out.println("MAking my_filter_final");
String MY_FILTER_Final=MY_FILTER+line+"))";
//System.out.println("MY_FILTER_Final="+MY_FILTER_Final);
Hashtable env = new Hashtable();
env.put(Context.INITIAL_CONTEXT_FACTORY,INITCTX);
env.put(Context.PROVIDER_URL,MY_HOST);
env.put(Context.SECURITY_AUTHENTICATION,"simple");
env.put(Context.SECURITY_PRINCIPAL,MGR_DN);
env.put(Context.SECURITY_CREDENTIALS,MGR_PW);
DirContext ctx = new InitialDirContext(env);
SearchControls constraints = new SearchControls();
constraints.setSearchScope(SearchControls.SUBTREE_SCOPE);
//performs the actual search
//We give it a searchbase, a filter and the contraints containing the scope
//of the search
NamingEnumeration results = ctx.search(MY_SEARCHBASE,MY_FILTER_Final,constraints);
//now stop through the search results
//System.out.println(results);
while(results==null)
{
System.out.println("**************************************"+line+"$$$$$does not exit in USerlist");
}
while(results != null || results.hasMore()){
System.out.println("entering wile loop----------------");
SearchResult sr = (SearchResult)results.next();
String dn = sr.getName();
String state = dn.substring(dn.indexOf("cn=")+3);
//String First_Name_Final=First_Name[i].substring(First_Name[i].indexOf("cn=")+3);
//System.out.println("Username="+line1+"@@@@@@@"+line+" Group = "+state);
System.out.println("Username="+line1+"-->Group = "+state);
pwr.print(line1);
pwr.print(",");
pwr.print(state);
pwr.print(",");
pwr.println("");
i++;
Attributes attrs = sr.getAttributes();
NamingEnumeration ne = attrs.getAll();
if (attrs == null) {
System.out.println("Entry " + dn + " has none of the specified attributes\n");
return;
}
}
}
pwr.close();
}catch(Exception ex){
ex.printStackTrace();
System.exit(1);
}
}
}
Facing Null Pointer Exception in while (((line = bufferReader.readLine()) != line. When the user belongs to no group it hits a null pointer exception. What is want is When user belongs to no group it should return Doesn't exist .
OUTPUT:-
entering wile loop----------------
java.lang.NullPointerException
at com.sun.jndi.ldap.AbstractLdapNamingEnumeration.getNextBatch(Unknown Source)
at com.sun.jndi.ldap.AbstractLdapNamingEnumeration.nextAux(Unknown Source)
at com.sun.jndi.ldap.AbstractLdapNamingEnumeration.nextImpl(Unknown Source)
at com.sun.jndi.ldap.AbstractLdapNamingEnumeration.next(Unknown Source)
at com.sun.jndi.ldap.AbstractLdapNamingEnumeration.next(Unknown Source)
at com.LDAP_MultiUser_Copy1.main(LDAP_MultiUser_Copy1.java:89)
import javax.naming.directory.*;
public class LDAP_MultiUser_Copy1 {
public static String INITCTX = "com.sun.jndi.ldap.LdapCtxFactory";
public static String MY_HOST = "ldap://singh.plm.com:3890";
public static String MY_SEARCHBASE = "cn=Public,x=X-Y,ou=people,cn=Windchill_8.0,cn=Application Services,X=X-Y";
public static String MY_FILTER = "(&(objectclass=groupOfUniqueNames)(uniqueMember=";
public static String MGR_DN = "cn=Manager";
public static String MGR_PW = "ldapadmin";
//public String[] MY_FILTER2=new String[200];
public static void main(String[] args) throws IOException {
String[] MY_FILTER2=new String[900];
String[] First_Name=new String[200];
//String[] MY_FILTER2=null;
try{
String fileName="C:\\report\\report.txt";
FileReader inputFile = new FileReader(fileName);
BufferedReader bufferReader = new BufferedReader(inputFile);
String line;
FileWriter writer = new FileWriter("C:\\report\\report11.csv");
PrintWriter pwr = new PrintWriter(writer);
String fileName1="C:\\report\\report1.txt";
FileReader inputFile1 = new FileReader(fileName1);
BufferedReader bufferReader1 = new BufferedReader(inputFile1);
String line1;
pwr.print("User");
pwr.print(",");
pwr.print("Group Name");
pwr.print(",");
pwr.println();
int i=0;
while (((line = bufferReader.readLine()) != null) && (line1 = bufferReader1.readLine())!= null)
{
//System.out.println(line);
//System.out.println("Reading text file");
MY_FILTER2[i]=line;
//System.out.println("My_Filter2="+MY_FILTER2[i]);
//First_Name = line.split(",");
//System.out.println("MAking my_filter_final");
String MY_FILTER_Final=MY_FILTER+line+"))";
//System.out.println("MY_FILTER_Final="+MY_FILTER_Final);
Hashtable env = new Hashtable();
env.put(Context.INITIAL_CONTEXT_FACTORY,INITCTX);
env.put(Context.PROVIDER_URL,MY_HOST);
env.put(Context.SECURITY_AUTHENTICATION,"simple");
env.put(Context.SECURITY_PRINCIPAL,MGR_DN);
env.put(Context.SECURITY_CREDENTIALS,MGR_PW);
DirContext ctx = new InitialDirContext(env);
SearchControls constraints = new SearchControls();
constraints.setSearchScope(SearchControls.SUBTREE_SCOPE);
//performs the actual search
//We give it a searchbase, a filter and the contraints containing the scope
//of the search
NamingEnumeration results = ctx.search(MY_SEARCHBASE,MY_FILTER_Final,constraints);
//now stop through the search results
System.out.println(results);
if((results.hasMore())==false)
{
System.out.println("%%%%%%%%%No Group Presnt for the USer="+line1);
pwr.print(line1);
pwr.print(",");
pwr.print("No Org Group");
pwr.print(",");
pwr.println();
}
while(results != null && results.hasMore()){
System.out.println("entering wile loop----------------");
SearchResult sr = (SearchResult)results.next();
if(sr==null)
{
System.out.println();
}
/* if((SearchResult sr = (SearchResult)results.next())==null)
{
System.out.println("No Org Group");
pwr.print(line1);
pwr.print(",");
pwr.print("No Org Group");
pwr.print(",");
pwr.println("");
}*/
else
{
String dn = sr.getName();
String state = dn.substring(dn.indexOf("cn=")+3);
//String First_Name_Final=First_Name[i].substring(First_Name[i].indexOf("cn=")+3);
//System.out.println("Username="+line1+"@@@@@@@"+line+" Group = "+state);
System.out.println("Username="+line1+"-->Group = "+state);
pwr.print(line1);
pwr.print(",");
pwr.print(state);
pwr.print(",");
pwr.println("");
i++;
Attributes attrs = sr.getAttributes();
NamingEnumeration ne = attrs.getAll();
/*while(ne.hasMoreElements()) {
Attribute attr = (Attribute) ne.next();
String attrID = attr.getID();
System.out.println(attrID+" :");
Enumeration vals = attr.getAll();
while(vals.hasMoreElements() ) {
System.out.println("\t"+vals.nextElement());
}
}*/
//System.out.println("\n");
if (attrs == null) {
System.out.println("Entry " + dn + " has none of the specified attributes\n");
return;
}
}
}
}
pwr.close();
}catch(Exception ex){
ex.printStackTrace();
System.exit(1);
}
}
}