Spring Ldap NewBiew connect to Tivoli

[addiakogiannis]

Hi guys and gongrats for this forum!

I am newbie in Spring LDAP and trying to connect to IBM tivoli server.

My Configuration is

<bean id="contextSource" class="org.springframework.ldap.core.support.LdapContextSource">
        <property name="url" value="ldap://10.1.100.74:389" />
        <property name="base" value="o=aspisbank" />
        <property name="userDn" value="cn=root" />
        <property name="password" value="giannis" />
    </bean>
    <bean id="ldapTemplate" class="org.springframework.ldap.core.LdapTemplate">
        <constructor-arg ref="contextSource" />
    </bean>
    <bean id="userService" class="gr.tbank.ebankingservice.impl.PersonDaoImpl">
            <property name="ldapTemplate" ref="ldapTemplate"/>
    </bean>

and my class for making a search to retrieve all users is

public class PersonDaoImpl {

    public LdapTemplate ldapTemplate;

    public void setLdapTemplate(LdapTemplate ldapTemplate){
        this.ldapTemplate = ldapTemplate;
    }

    public List getAllPersonNames() {
        if(this.ldapTemplate == null)
            System.out.println("template not null");

        return this.ldapTemplate.search(
                "", "(objectclass=*)",
                new AttributesMapper() {

                    public Object mapFromAttributes(Attributes attrs)
                            throws NamingException {
                        return attrs.get("cn").get();
                    }
                });
    }
}

But when I try to run this from a Controller (I use Spring MVC) I get a null pointer exception.

Here is my controller method

//LdapTemplate ldapTemplate
    @RequestMapping(value = "/index", method = RequestMethod.GET)
    public String ldapQ(Model model) {
        logger.info("Accessing ldapQ in tokenController");
        PersonDaoImpl pdi = new PersonDaoImpl();
        List list = pdi.getAllPersonNames();
       

   logger.info(list.size());
        return ("/index");
    }

And my Stack Trace

SEVERE: StandardWrapperValve[dispatcher]: PWC1406: Servlet.service() for servlet dispatcher threw exception
java.lang.NullPointerException
        at gr.tbank.ebankingservice.impl.PersonDaoImpl.getAllPersonNames(PersonDaoImpl.java:29)
        at gr.tbank.ebankingservice.services.tokenService.ldapQ(tokenService.java:52)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:597)
        at org.springframework.web.bind.annotation.support.HandlerMethodInvoker.invokeHandlerMethod(HandlerMethodInvoker.java:174)
        at org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.invokeHandlerMethod(AnnotationMethodHandlerAdapter.java:421)
        at org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.handle(AnnotationMethodHandlerAdapter.java:409)
        at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:771)
        at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:716)
        at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:644)
        at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:549)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:734)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:847)
        at org.apache.catalina.core.ApplicationFilterChain.servletService(ApplicationFilterChain.java:431)
        at org.apache.catalina.core.StandardWrapperValve.preInvoke(StandardWrapperValve.java:462)
        at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:139)
        at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:186)
        at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:719)
        at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:657)
        at com.sun.enterprise.web.WebPipeline.invoke(WebPipeline.java:96)
        at com.sun.enterprise.web.PESessionLockingStandardPipeline.invoke(PESessionLockingStandardPipeline.java:98)
        at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:187)
        at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:719)
        at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:657)
        at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:651)
        at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:1030)
        at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:142)
        at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:719)
        at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:657)
        at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:651)
        at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:1030)
        at org.apache.catalina.connector.CoyoteAdapter.doService(CoyoteAdapter.java:325)
        at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:242)
        at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:180)
        at com.sun.grizzly.http.DefaultProcessorTask.invokeAdapter(DefaultProcessorTask.java:633)
        at com.sun.grizzly.http.DefaultProcessorTask.doProcess(DefaultProcessorTask.java:570)
        at com.sun.grizzly.http.DefaultProcessorTask.process(DefaultProcessorTask.java:827)
        at com.sun.grizzly.http.DefaultProtocolFilter.execute(DefaultProtocolFilter.java:152)
        at com.sun.enterprise.v3.services.impl.GlassfishProtocolChain.executeProtocolFilter(GlassfishProtocolChain.java:71)
        at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:103)
        at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:89)
        at com.sun.grizzly.http.HttpProtocolChain.execute(HttpProtocolChain.java:76)
        at com.sun.grizzly.ProtocolChainContextTask.doCall(ProtocolChainContextTask.java:67)
        at com.sun.grizzly.SelectionKeyContextTask.call(SelectionKeyContextTask.java:56)
        at com.sun.grizzly.util.WorkerThreadImpl.processTask(WorkerThreadImpl.java:325)
        at com.sun.grizzly.util.WorkerThreadImpl.run(WorkerThreadImpl.java:184)

Can you help out here my fellow Springers???

[Marten Deinum]

Don't create a new instance of the dao inject the one from the applicationcontext.

[addiakogiannis]

So in plain English you mean ???

Sorry mate but you write as a code so that I can understand what you mean because I am newbie?

[Marten Deinum]

Well that is plain English .

//LdapTemplate ldapTemplate
@RequestMapping(value = "/index", method = RequestMethod.GET)
public String ldapQ(Model model) {
	logger.info("Accessing ldapQ in tokenController");
	PersonDaoImpl pdi = new PersonDaoImpl();
	List list = pdi.getAllPersonNames();
	logger.info(list.size());
	return ("/index");
}

The red line creates a new instance of the dao... You should be using the one you configure int he applicationcontext. I suggest the forum search and a read of the spring reference guide.

[addiakogiannis]

thanks mate!

[divyesh.sanja@gmail.com]

Could you tell what java code is at line 29 in your PersonDaoImpl.java? Nothing in particular looking wrong unless there is problem with LDAP.

[addiakogiannis]

return this.ldapTemplate.search(
                "", "(objectclass=*)",
                new AttributesMapper() {

                    public Object mapFromAttributes(Attributes attrs)
                            throws NamingException {
                        return attrs.get("cn").get();
                    }
                });