Getting Could not autowire field: private com.jio.asp.service.MongoDBBussinessDelegate - mongodb

Question

Getting error while autowired MongoDBBussinessDelegate
Getting Null Pointer Exception if I intialize MongoDBBussinessDelegate as a class object.
I tried to autowired Mongotemplate in controller also but getting the same error.
error
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'mongoDBController': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private com.jio.asp.service.MongoDBBussinessDelegate com.jio.asp.controller.MongoDBController.mongoDBBussinessDelegate; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'mongoDBBussinessDelegate': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private org.springframework.data.mongodb.core.MongoTemplate com.jio.asp.service.MongoDBBussinessDelegate.mongoTemplate; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [org.springframework.data.mongodb.core.MongoTemplate] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {#org.springframework.beans.factory.annotation.Autowired(required=true)}
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:292)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1185)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:537)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:475)
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:304)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:228)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:300)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:195)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:703)
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:760)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:482)
at org.springframework.web.context.ContextLoader.configureAndRefreshWebApplicationContext(ContextLoader.java:403)
at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:306)
at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:106)
at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4809)
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5251)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:147)
at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:725)
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:701)
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:717)
at org.apache.catalina.startup.HostConfig.deployWAR(HostConfig.java:940)
at org.apache.catalina.startup.HostConfig$DeployWar.run(HostConfig.java:1816)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
Caused by: org.springframework.beans.factory.BeanCreationException: Could not autowire field: private com.jio.asp.service.MongoDBBussinessDelegate com.jio.asp.controller.MongoDBController.mongoDBBussinessDelegate; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'mongoDBBussinessDelegate': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private org.springframework.data.mongodb.core.MongoTemplate com.jio.asp.service.MongoDBBussinessDelegate.mongoTemplate; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [org.springframework.data.mongodb.core.MongoTemplate] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {#org.springframework.beans.factory.annotation.Autowired(required=true)}
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:508)
at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:87)
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:289)
... 26 more
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'mongoDBBussinessDelegate': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private org.springframework.data.mongodb.core.MongoTemplate com.jio.asp.service.MongoDBBussinessDelegate.mongoTemplate; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [org.springframework.data.mongodb.core.MongoTemplate] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {#org.springframework.beans.factory.annotation.Autowired(required=true)}
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:292)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1185)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:537)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:475)
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:304)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:228)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:300)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:195)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.findAutowireCandidates(DefaultListableBeanFactory.java:1017)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:960)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:858)
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:480)
... 28 more
Caused by: org.springframework.beans.factory.BeanCreationException: Could not autowire field: private org.springframework.data.mongodb.core.MongoTemplate com.jio.asp.service.MongoDBBussinessDelegate.mongoTemplate; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [org.springframework.data.mongodb.core.MongoTemplate] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {#org.springframework.beans.factory.annotation.Autowired(required=true)}
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:508)
at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:87)
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:289)
... 39 more
Caused by: org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [org.springframework.data.mongodb.core.MongoTemplate] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {#org.springframework.beans.factory.annotation.Autowired(required=true)}
at org.springframework.beans.factory.support.DefaultListableBeanFactory.raiseNoSuchBeanDefinitionException(DefaultListableBeanFactory.java:1103)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:963)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:858)
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:480)
... 41 more
Controller
package com.jio.asp.controller;
import java.util.List;
import java.util.Map;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.bind.annotation.RestController;
import com.jio.asp.domain.Message;
import com.jio.asp.model.Person;
import com.jio.asp.service.MongoDBBussinessDelegate;
#RestController
public class MongoDBController {
#Autowired
private MongoDBBussinessDelegate mongoDBBussinessDelegate;
#RequestMapping("/")
#ResponseBody
public String welcome(#RequestBody Map<String, String> user) {//Welcome page, non-rest
// MongoDBBussinessDelegate mongoDBBussinessDelegate = new MongoDBBussinessDelegate();
//Person person = new Person();
//person.setId("2");
//person.setName("Raj");
//m.addPerson(person);
List<Person> lperson = mongoDBBussinessDelegate.listPerson();
//m.addPerson(user);
//System.out.println(mongoTemplate.getCollectionNames());
return "done";
}
#RequestMapping("/hello/{player}")
public Message message(#PathVariable String player) {//REST Endpoint.
Message msg = new Message(player, "Hello " + player);
return msg;
}
}
Service
package com.jio.asp.service;
import java.util.List;
import java.util.Map;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.mongodb.core.MongoTemplate;
import org.springframework.stereotype.Service;
import com.jio.asp.model.Person;
import com.mongodb.BasicDBObject;
import com.mongodb.DBCollection;
import com.mongodb.MongoClient;
#Service
public class MongoDBBussinessDelegate {
#Autowired
private MongoTemplate mongoTemplate;
public static final String COLLECTION_NAME = "users";
public void addPerson(Map<String, String> user) {
/* if (!mongoTemplate.collectionExists(Person.class)) {
mongoTemplate.createCollection(Person.class);
}*/
//System.out.println(mongoTemplate.);
DBCollection col = mongoTemplate.getCollection(COLLECTION_NAME);
/*Map<String,String> map = new HashMap<>();
map.put("username", "nishant");
map.put("pass", "pass ho gya");*/
BasicDBObject obj = new BasicDBObject(user);
col.insert(obj);
//person.set_id(UUID.randomUUID().toString());
//mongoTemplate.insert(person, COLLECTION_NAME);
//mongoTemplate.save(person,"person");
}
public List<Person> listPerson() {
return mongoTemplate.findAll(Person.class,COLLECTION_NAME);
}
public void deletePerson(Person person) {
mongoTemplate.remove(person, COLLECTION_NAME);
}
public void updatePerson(Person person) {
mongoTemplate.insert(person, COLLECTION_NAME);
}
public static void main(String [] args){
MongoClient m = new MongoClient("localhost");
System.out.println(m.getDatabaseNames());
MongoTemplate t = new MongoTemplate(m, "aadhaar");
System.out.println(t.getCollectionNames());
/*DBCollection col = t.getCollection("users");
Map<String,String> map = new HashMap<>();
map.put("username", "nishant");
map.put("pass", "pass ho gya");
BasicDBObject obj = new BasicDBObject(map);
col.insert(obj);*/
// System.out.println(t.findAll(Person.class, COLLECTION_NAME));
}
}
Dispatcher servlet
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:mongo="http://www.springframework.org/schema/data/mongo"
xsi:schemaLocation="
http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-4.0.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-4.0.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-4.0.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop-4.0.xsd
http://www.springframework.org/schema/data/mongo
http://www.springframework.org/schema/data/mongo/spring-mongo-1.0.xsd">
<context:component-scan base-package="com.jio.asp.controller" />
<context:component-scan base-package="com.jio.asp.domain" />
<context:component-scan base-package="com.jio.asp.model" />
<context:component-scan base-package="com.jio.asp.service" />
<bean id="mongo" class="com.mongodb.MongoClient">
<constructor-arg name="host" value="127.0.0.1" />
</bean>
<bean id="mongoTemplate" class="org.springframework.data.mongodb.core.MongoTemplate">
<constructor-arg name="mongo" ref="mongo" />
<constructor-arg name="databaseName" value="aadhaar" />
</bean>
</beans>