我正在自学 Spring 和 Hibernate。我读过几篇文章并尝试创建完全没有 XML 的 Spring 和 Hibernate 应用程序。我不知道为什么，但它不起作用，最后我收到错误消息:
17:28:32.845 [main] DEBUG org.springframework.core.env.StandardEnvironment - Adding [systemProperties] PropertySource with lowest search precedence
17:28:32.854 [main] DEBUG org.springframework.core.env.StandardEnvironment - Adding [systemEnvironment] PropertySource with lowest search precedence
17:28:32.854 [main] DEBUG org.springframework.core.env.StandardEnvironment - Initialized StandardEnvironment with PropertySources [systemProperties,systemEnvironment]
17:28:32.928 [main] DEBUG org.springframework.context.annotation.ClassPathBeanDefinitionScanner - JSR-250 'javax.annotation.ManagedBean' found and supported for component scanning
17:28:32.931 [main] DEBUG org.springframework.context.annotation.ClassPathBeanDefinitionScanner - JSR-330 'javax.inject.Named' annotation found and supported for component scanning
17:28:32.937 [main] DEBUG org.springframework.core.io.support.PathMatchingResourcePatternResolver - Resolved classpath location [com/boris/] to resources []
17:28:32.937 [main] DEBUG org.springframework.core.io.support.PathMatchingResourcePatternResolver - Resolved location pattern [classpath*:com/boris/**/*.class] to resources []
17:28:32.944 [main] INFO org.springframework.context.annotation.AnnotationConfigApplicationContext - Refreshing org.springframework.context.annotation.AnnotationConfigApplicationContext@7382f612: startup date [Mon Aug 14 17:28:32 EEST 2017]; root of context hierarchy
17:28:32.946 [main] DEBUG org.springframework.context.annotation.AnnotationConfigApplicationContext - Bean factory for org.springframework.context.annotation.AnnotationConfigApplicationContext@7382f612: org.springframework.beans.factory.support.DefaultListableBeanFactory@5702b3b1: defining beans [org.springframework.context.annotation.internalConfigurationAnnotationProcessor,org.springframework.context.annotation.internalAutowiredAnnotationProcessor,org.springframework.context.annotation.internalRequiredAnnotationProcessor,org.springframework.context.annotation.internalCommonAnnotationProcessor,org.springframework.context.annotation.internalPersistenceAnnotationProcessor,org.springframework.context.event.internalEventListenerProcessor,org.springframework.context.event.internalEventListenerFactory]; root of factory hierarchy
17:28:32.965 [main] DEBUG org.springframework.beans.factory.support.DefaultListableBeanFactory - Creating shared instance of singleton bean 'org.springframework.context.annotation.internalConfigurationAnnotationProcessor'
17:28:32.966 [main] DEBUG org.springframework.beans.factory.support.DefaultListableBeanFactory - Creating instance of bean 'org.springframework.context.annotation.internalConfigurationAnnotationProcessor'
17:28:33.003 [main] DEBUG org.springframework.beans.factory.support.DefaultListableBeanFactory - Eagerly caching bean 'org.springframework.context.annotation.internalConfigurationAnnotationProcessor' to allow for resolving potential circular references
17:28:33.009 [main] DEBUG org.springframework.beans.factory.support.DefaultListableBeanFactory - Finished creating instance of bean 'org.springframework.context.annotation.internalConfigurationAnnotationProcessor'
17:28:33.065 [main] DEBUG org.springframework.beans.factory.support.DefaultListableBeanFactory - Creating shared instance of singleton bean 'org.springframework.context.annotation.internalAutowiredAnnotationProcessor'
17:28:33.065 [main] DEBUG org.springframework.beans.factory.support.DefaultListableBeanFactory - Creating instance of bean 'org.springframework.context.annotation.internalAutowiredAnnotationProcessor'
17:28:33.067 [main] INFO org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor - JSR-330 'javax.inject.Inject' annotation found and supported for autowiring
17:28:33.067 [main] DEBUG org.springframework.beans.factory.support.DefaultListableBeanFactory - Eagerly caching bean 'org.springframework.context.annotation.internalAutowiredAnnotationProcessor' to allow for resolving potential circular references
17:28:33.067 [main] DEBUG org.springframework.beans.factory.support.DefaultListableBeanFactory - Finished creating instance of bean 'org.springframework.context.annotation.internalAutowiredAnnotationProcessor'
17:28:33.068 [main] DEBUG org.springframework.beans.factory.support.DefaultListableBeanFactory - Creating shared instance of singleton bean 'org.springframework.context.annotation.internalRequiredAnnotationProcessor'
17:28:33.074 [main] DEBUG org.springframework.beans.factory.support.DefaultListableBeanFactory - Creating instance of bean 'org.springframework.context.annotation.internalRequiredAnnotationProcessor'
17:28:33.091 [main] DEBUG org.springframework.beans.factory.support.DefaultListableBeanFactory - Eagerly caching bean 'org.springframework.context.annotation.internalRequiredAnnotationProcessor' to allow for resolving potential circular references
17:28:33.091 [main] DEBUG org.springframework.beans.factory.support.DefaultListableBeanFactory - Finished creating instance of bean 'org.springframework.context.annotation.internalRequiredAnnotationProcessor'
17:28:33.092 [main] DEBUG org.springframework.beans.factory.support.DefaultListableBeanFactory - Creating shared instance of singleton bean 'org.springframework.context.annotation.internalCommonAnnotationProcessor'
17:28:33.092 [main] DEBUG org.springframework.beans.factory.support.DefaultListableBeanFactory - Creating instance of bean 'org.springframework.context.annotation.internalCommonAnnotationProcessor'
17:28:33.109 [main] DEBUG org.springframework.beans.factory.support.DefaultListableBeanFactory - Eagerly caching bean 'org.springframework.context.annotation.internalCommonAnnotationProcessor' to allow for resolving potential circular references
17:28:33.109 [main] DEBUG org.springframework.beans.factory.support.DefaultListableBeanFactory - Finished creating instance of bean 'org.springframework.context.annotation.internalCommonAnnotationProcessor'
17:28:33.109 [main] DEBUG org.springframework.beans.factory.support.DefaultListableBeanFactory - Creating shared instance of singleton bean 'org.springframework.context.annotation.internalPersistenceAnnotationProcessor'
17:28:33.109 [main] DEBUG org.springframework.beans.factory.support.DefaultListableBeanFactory - Creating instance of bean 'org.springframework.context.annotation.internalPersistenceAnnotationProcessor'
17:28:33.111 [main] DEBUG org.springframework.beans.factory.support.DefaultListableBeanFactory - Eagerly caching bean 'org.springframework.context.annotation.internalPersistenceAnnotationProcessor' to allow for resolving potential circular references
17:28:33.111 [main] DEBUG org.springframework.beans.factory.support.DefaultListableBeanFactory - Finished creating instance of bean 'org.springframework.context.annotation.internalPersistenceAnnotationProcessor'
17:28:33.111 [main] DEBUG org.springframework.beans.factory.support.DefaultListableBeanFactory - Creating shared instance of singleton bean 'org.springframework.context.annotation.ConfigurationClassPostProcessor.importAwareProcessor'
17:28:33.111 [main] DEBUG org.springframework.beans.factory.support.DefaultListableBeanFactory - Creating instance of bean 'org.springframework.context.annotation.ConfigurationClassPostProcessor.importAwareProcessor'
17:28:33.112 [main] DEBUG org.springframework.beans.factory.support.DefaultListableBeanFactory - Eagerly caching bean 'org.springframework.context.annotation.ConfigurationClassPostProcessor.importAwareProcessor' to allow for resolving potential circular references
17:28:33.112 [main] DEBUG org.springframework.beans.factory.support.DefaultListableBeanFactory - Finished creating instance of bean 'org.springframework.context.annotation.ConfigurationClassPostProcessor.importAwareProcessor'
17:28:33.112 [main] DEBUG org.springframework.beans.factory.support.DefaultListableBeanFactory - Creating shared instance of singleton bean 'org.springframework.context.annotation.ConfigurationClassPostProcessor.enhancedConfigurationProcessor'
17:28:33.112 [main] DEBUG org.springframework.beans.factory.support.DefaultListableBeanFactory - Creating instance of bean 'org.springframework.context.annotation.ConfigurationClassPostProcessor.enhancedConfigurationProcessor'
17:28:33.114 [main] DEBUG org.springframework.beans.factory.support.DefaultListableBeanFactory - Eagerly caching bean 'org.springframework.context.annotation.ConfigurationClassPostProcessor.enhancedConfigurationProcessor' to allow for resolving potential circular references
17:28:33.114 [main] DEBUG org.springframework.beans.factory.support.DefaultListableBeanFactory - Finished creating instance of bean 'org.springframework.context.annotation.ConfigurationClassPostProcessor.enhancedConfigurationProcessor'
17:28:33.119 [main] DEBUG org.springframework.context.annotation.AnnotationConfigApplicationContext - Unable to locate MessageSource with name 'messageSource': using default [org.springframework.context.support.DelegatingMessageSource@27808f31]
17:28:33.126 [main] DEBUG org.springframework.context.annotation.AnnotationConfigApplicationContext - Unable to locate ApplicationEventMulticaster with name 'applicationEventMulticaster': using default [org.springframework.context.event.SimpleApplicationEventMulticaster@6b57696f]
17:28:33.127 [main] DEBUG org.springframework.beans.factory.support.DefaultListableBeanFactory - Pre-instantiating singletons in org.springframework.beans.factory.support.DefaultListableBeanFactory@5702b3b1: defining beans [org.springframework.context.annotation.internalConfigurationAnnotationProcessor,org.springframework.context.annotation.internalAutowiredAnnotationProcessor,org.springframework.context.annotation.internalRequiredAnnotationProcessor,org.springframework.context.annotation.internalCommonAnnotationProcessor,org.springframework.context.annotation.internalPersistenceAnnotationProcessor,org.springframework.context.event.internalEventListenerProcessor,org.springframework.context.event.internalEventListenerFactory,org.springframework.context.annotation.ConfigurationClassPostProcessor.importAwareProcessor,org.springframework.context.annotation.ConfigurationClassPostProcessor.enhancedConfigurationProcessor]; root of factory hierarchy
17:28:33.127 [main] DEBUG org.springframework.beans.factory.support.DefaultListableBeanFactory - Returning cached instance of singleton bean 'org.springframework.context.annotation.internalConfigurationAnnotationProcessor'
17:28:33.127 [main] DEBUG org.springframework.beans.factory.support.DefaultListableBeanFactory - Returning cached instance of singleton bean 'org.springframework.context.annotation.internalAutowiredAnnotationProcessor'
17:28:33.127 [main] DEBUG org.springframework.beans.factory.support.DefaultListableBeanFactory - Returning cached instance of singleton bean 'org.springframework.context.annotation.internalRequiredAnnotationProcessor'
17:28:33.127 [main] DEBUG org.springframework.beans.factory.support.DefaultListableBeanFactory - Returning cached instance of singleton bean 'org.springframework.context.annotation.internalCommonAnnotationProcessor'
17:28:33.127 [main] DEBUG org.springframework.beans.factory.support.DefaultListableBeanFactory - Returning cached instance of singleton bean 'org.springframework.context.annotation.internalPersistenceAnnotationProcessor'
17:28:33.128 [main] DEBUG org.springframework.beans.factory.support.DefaultListableBeanFactory - Creating shared instance of singleton bean 'org.springframework.context.event.internalEventListenerProcessor'
17:28:33.128 [main] DEBUG org.springframework.beans.factory.support.DefaultListableBeanFactory - Creating instance of bean 'org.springframework.context.event.internalEventListenerProcessor'
17:28:33.140 [main] DEBUG org.springframework.beans.factory.support.DefaultListableBeanFactory - Eagerly caching bean 'org.springframework.context.event.internalEventListenerProcessor' to allow for resolving potential circular references
17:28:33.187 [main] DEBUG org.springframework.beans.factory.support.DefaultListableBeanFactory - Finished creating instance of bean 'org.springframework.context.event.internalEventListenerProcessor'
17:28:33.187 [main] DEBUG org.springframework.beans.factory.support.DefaultListableBeanFactory - Creating shared instance of singleton bean 'org.springframework.context.event.internalEventListenerFactory'
17:28:33.187 [main] DEBUG org.springframework.beans.factory.support.DefaultListableBeanFactory - Creating instance of bean 'org.springframework.context.event.internalEventListenerFactory'
17:28:33.188 [main] DEBUG org.springframework.beans.factory.support.DefaultListableBeanFactory - Eagerly caching bean 'org.springframework.context.event.internalEventListenerFactory' to allow for resolving potential circular references
17:28:33.196 [main] DEBUG org.springframework.beans.factory.support.DefaultListableBeanFactory - Finished creating instance of bean 'org.springframework.context.event.internalEventListenerFactory'
17:28:33.196 [main] DEBUG org.springframework.beans.factory.support.DefaultListableBeanFactory - Returning cached instance of singleton bean 'org.springframework.context.annotation.ConfigurationClassPostProcessor.importAwareProcessor'
17:28:33.197 [main] DEBUG org.springframework.beans.factory.support.DefaultListableBeanFactory - Returning cached instance of singleton bean 'org.springframework.context.annotation.ConfigurationClassPostProcessor.enhancedConfigurationProcessor'
17:28:33.197 [main] DEBUG org.springframework.beans.factory.support.DefaultListableBeanFactory - Returning cached instance of singleton bean 'org.springframework.context.event.internalEventListenerFactory'
17:28:33.248 [main] DEBUG org.springframework.context.annotation.AnnotationConfigApplicationContext - Unable to locate LifecycleProcessor with name 'lifecycleProcessor': using default [org.springframework.context.support.DefaultLifecycleProcessor@2641e737]
17:28:33.249 [main] DEBUG org.springframework.beans.factory.support.DefaultListableBeanFactory - Returning cached instance of singleton bean 'lifecycleProcessor'
17:28:33.252 [main] DEBUG org.springframework.core.env.PropertySourcesPropertyResolver - Searching for key 'spring.liveBeansView.mbeanDomain' in [systemProperties]
17:28:33.252 [main] DEBUG org.springframework.core.env.PropertySourcesPropertyResolver - Searching for key 'spring.liveBeansView.mbeanDomain' in [systemEnvironment]
17:28:33.253 [main] DEBUG org.springframework.core.env.PropertySourcesPropertyResolver - Could not find key 'spring.liveBeansView.mbeanDomain' in any property source. Returning [null]
Exception in thread "main" org.springframework.beans.factory.NoSuchBeanDefinitionException: No bean named 'employeeService' is defined
at org.springframework.beans.factory.support.DefaultListableBeanFactory.getBeanDefinition(DefaultListableBeanFactory.java:698)
at org.springframework.beans.factory.support.AbstractBeanFactory.getMergedLocalBeanDefinition(AbstractBeanFactory.java:1175)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:284)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202)
at org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:1060)
at Test.main(Test.java:18)
org.springframework.context.annotation.AnnotationConfigApplicationContext@7382f612: startup date [Mon Aug 14 17:28:32 EEST 2017]; root of context hierarchy
Process finished with exit code 1
我正在努力找出我做错了什么。但不幸的是，我没有发现我的代码有任何问题。请你帮助我好吗？ 下面是我的完整代码。
应用配置
import org.springframework.beans.factory.config.PropertyPlaceholderConfigurer;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Import;
import org.springframework.core.io.ClassPathResource;
@Import({RepositoryConfig.class})
@Configuration
public class AppConfig
{
@Bean
public PropertyPlaceholderConfigurer getPropertyPlaceholderConfigurer()
{
PropertyPlaceholderConfigurer ppc = new PropertyPlaceholderConfigurer();
ppc.setLocation(new ClassPathResource("application.properties"));
ppc.setIgnoreUnresolvablePlaceholders(true);
return ppc;
}
}
员工
import javax.persistence.*;
@Entity
@Table(name = "tasks_test.employee_example")
public class Employee {
@Id @GeneratedValue
@Column(name = "id")
private int id;
@Column(name = "first_name")
private String firstName;
@Column(name = "last_name")
private String lastName;
@Column(name = "salary")
private int salary;
public Employee() {}
public Employee(Integer id, String firstName, String lastName, int salary)
{
this.id = id;
this.firstName = firstName;
this.lastName = lastName;
this.salary = salary;
}
public int getId() {
return id;
}
public void setId( int id ) {
this.id = id;
}
public String getFirstName() {
return firstName;
}
public void setFirstName( String first_name ) {
this.firstName = first_name;
}
public String getLastName() {
return lastName;
}
public void setLastName( String last_name ) {
this.lastName = last_name;
}
public int getSalary() {
return salary;
}
public void setSalary( int salary ) {
this.salary = salary;
}
@Override
public String toString()
{
return "User [firstName=" + firstName + ", lastName=" + lastName + ", id=" + id + ", salary=" + salary+ "]";
}
}
员工资料库
import java.util.List;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.orm.hibernate4.HibernateTemplate;
import org.springframework.stereotype.Repository;
import org.springframework.transaction.annotation.Transactional;
@Transactional
@Repository
public class EmployeeRepository
{
@Autowired
private HibernateTemplate hibernateTemplate;
public List<Employee> getAllEmployees()
{
return this.hibernateTemplate.loadAll(Employee.class);
}
public Integer createEmployee(Employee employee)
{
Employee mergeEmployee = this.hibernateTemplate.merge(employee);
return mergeEmployee.getId();
}
}
员工服务
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import java.util.List;
@Service
public class EmployeeService
{
@Autowired
private EmployeeRepository employeeRepository;
public List<Employee> getAllEmployees()
{
return this.employeeRepository.getAllEmployees();
}
public Integer createEmployee(Employee employee)
{
return this.employeeRepository.createEmployee(employee);
}
}
存储库配置
import java.util.Properties;
import javax.sql.DataSource;
import org.hibernate.SessionFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.jdbc.datasource.DriverManagerDataSource;
import org.springframework.orm.hibernate4.HibernateTemplate;
import org.springframework.orm.hibernate4.HibernateTransactionManager;
import org.springframework.orm.hibernate4.LocalSessionFactoryBean;
@Configuration
public class RepositoryConfig
{
@Value("${jdbc.driverClassName}") private String driverClassName;
@Value("${jdbc.url}") private String url;
@Value("${jdbc.username}") private String username;
@Value("${jdbc.password}") private String password;
@Value("${hibernate.dialect}") private String hibernateDialect;
@Value("${hibernate.show_sql}") private String hibernateShowSql;
@Value("${hibernate.hbm2ddl.auto}") private String hibernateHbm2ddlAuto;
@Bean()
public DataSource getDataSource()
{
DriverManagerDataSource ds = new DriverManagerDataSource();
ds.setDriverClassName(driverClassName);
ds.setUrl(url);
ds.setUsername(username);
ds.setPassword(password);
return ds;
}
@Bean
@Autowired
public HibernateTransactionManager transactionManager(SessionFactory sessionFactory)
{
HibernateTransactionManager htm = new HibernateTransactionManager();
htm.setSessionFactory(sessionFactory);
return htm;
}
@Bean
@Autowired
public HibernateTemplate getHibernateTemplate(SessionFactory sessionFactory)
{
HibernateTemplate hibernateTemplate = new HibernateTemplate(sessionFactory);
return hibernateTemplate;
}
@Bean
public LocalSessionFactoryBean getSessionFactory()
{
LocalSessionFactoryBean asfb = new LocalSessionFactoryBean();
asfb.setDataSource(getDataSource());
asfb.setHibernateProperties(getHibernateProperties());
asfb.setPackagesToScan(new String[]{"com.boris"});
return asfb;
}
@Bean
public Properties getHibernateProperties()
{
Properties properties = new Properties();
properties.put("hibernate.dialect", hibernateDialect);
properties.put("hibernate.show_sql", hibernateShowSql);
properties.put("hibernate.hbm2ddl.auto", hibernateHbm2ddlAuto);
return properties;
}
}
测试
import java.util.List;
import org.springframework.context.annotation.AnnotationConfigApplicationContext;
import org.springframework.context.annotation.ComponentScan;
@ComponentScan("com.boris")
public class Test
{
public static void main(String[] args)
{
AnnotationConfigApplicationContext ctx = new AnnotationConfigApplicationContext();
ctx.scan("com.boris");
ctx.refresh();
System.out.println(ctx);
EmployeeService employeeService = ctx.getBean("employeeService",EmployeeService.class);
Employee employee1 = new Employee(null, "Bob", "Marley", 16000);
Employee employee2 = new Employee(null, "Donald", "Trump", 12000);
Employee employee3 = new Employee(null, "Olga","Lifshitz", 8000);
Employee employee4 = new Employee(null, "Massimo", "Dutti", 7000);
int id1 = employeeService.createEmployee(employee1);
System.out.println("New Employee created with ID="+id1);
int id2 = employeeService.createEmployee(employee2);
System.out.println("New Employee created with ID="+id2);
int id3 = employeeService.createEmployee(employee3);
System.out.println("New Employee created with ID="+id3);
int id4 = employeeService.createEmployee(employee4);
System.out.println("New Employee created with ID="+id4);
List<Employee> everybody = employeeService.getAllEmployees();
for (Employee e : everybody)
{
System.out.println(e);
}
}
}
应用程序属性
jdbc.driverClassName=org.hsqldb.jdbcDriver
jdbc.url=jdbc:mysql://localhost:3306/tasks_test
jdbc.username=user
jdbc.password=pass
hibernate.dialect=org.hibernate.dialect.HSQLDialect
hibernate.show_sql=true
hibernate.hbm2ddl.auto=update
hibernate.generate_statistics=true
最佳答案
你能尝试像那样初始化 employeeService 吗
@Autowired EmployeeService employeeService
在测试课上。
关于java - 没有 XML 的 Spring + Hibernate。错误 : NoSuchBeanDefinitionException，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/45677468/