My first time to use Spring-MVC and Mongodb . When I deploy the webapp and start server (Tomcat 8) I'am getting the following error :
[ERROR] [localhost-startStop-1 06:26:09] (ContextLoader.java:initWebApplicationContext:307) Context initialization failed org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'userController': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private com.zhwei.Service.UserService com.zhwei.controller.UserController.userservice; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'userService': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private com.zhwei.Repository.UserRepository com.zhwei.Service.UserService.userrepository; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'userRepository': FactoryBean threw exception on object creation; nested exception is java.lang.IllegalArgumentException: No property user found for type class com.zhwei.domain.User at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:287) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1106) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:517) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:456) at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:294) at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:225) at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:291) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:193) at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:585) at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:913) at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:464) at org.springframework.web.context.ContextLoader.configureAndRefreshWebApplicationContext(ContextLoader.java:384) at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:283) at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:111) at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4739) at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5159) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:726) at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:702) at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:697) at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:1134) at org.apache.catalina.startup.HostConfig$DeployDirectory.run(HostConfig.java:1780) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471) at java.util.concurrent.FutureTask.run(FutureTask.java:262) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) at java.lang.Thread.run(Thread.java:744) I don't understand why 'No property user found for type class com.zhwei.domain.User'. Any idea?How dose this error occur?
This is the User class:
package com.zhwei.domain; import org.springframework.data.annotation.Id; import org.springframework.data.mongodb.core.mapping.DBRef; import org.springframework.data.mongodb.core.mapping.Document; @Document public class User { @Id private String id; private String firstName; private String lastName; private String username; private String password; @DBRef private Role role; public String getId() { return id; } public void setId(String id) { this.id = id; } public String getFirstName() { return firstName; } public void setFirstName(String firstName) { this.firstName = firstName; } public String getLastName() { return lastName; } public void setLastName(String lastName) { this.lastName = lastName; } public String getUsername() { return username; } public void setUsername(String userName) { this.username = userName; } public String getPassword() { return password; } public void setPassword(String password) { this.password = password; } public Role getRole() { return role; } public void setRole(Role role) { this.role = role; } } This is the repository :
package com.zhwei.Repository; import org.springframework.data.mongodb.repository.MongoRepository; import com.zhwei.domain.User; public interface UserRepository extends MongoRepository<User,String> { User findByUserName(String username); } Here is the UserService :
package com.zhwei.Service; import java.util.List; import java.util.UUID; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Service; import com.zhwei.Repository.RoleRepository; import com.zhwei.Repository.UserRepository; import com.zhwei.domain.User; @Service public class UserService { @Autowired private UserRepository userrepository; @Autowired private RoleRepository roleRepository; // we must save,update or delete both separately since there is no cascading // feature // in Spring Data MongoDB public User create(User user) { user.setId(UUID.randomUUID().toString()); user.getRole().setId(UUID.randomUUID().toString()); roleRepository.save(user.getRole()); return userrepository.save(user); } public User read(User user) { return user; } public List<User> readAll() { return userrepository.findAll(); } public User update(User user) { User existingUser = userrepository.findByUserName(user.getUsername()); if (existingUser == null) { return null; } existingUser.setFirstName(user.getFirstName()); existingUser.setLastName(user.getLastName()); existingUser.setRole(user.getRole()); roleRepository.save(existingUser.getRole()); return userrepository.save(existingUser); } public boolean delete(User user) { User existingUser = userrepository.findByUserName(user.getUsername()); if (existingUser == null) { return false; } roleRepository.delete(existingUser.getRole()); userrepository.delete(existingUser); return true; } } 
