權威.javapackage com.easkart.domain.security;import org.springframework.security.core.GrantedAuthority;public class Authority implements GrantedAuthority {/** *  */private static final long serialVersionUID = 5888173406859788817L;private final String authority;public Authority(String authority) {    this.authority = authority;}@Overridepublic String getAuthority() {    return authority;}}角色.javapackage com.easkart.domain.security;import java.util.HashSet;import java.util.Set;import javax.persistence.CascadeType;import javax.persistence.Entity;import javax.persistence.FetchType;import javax.persistence.Id;import javax.persistence.OneToMany;@Entitypublic class Role {@Idprivate int roleId;private String name;@OneToMany(mappedBy = "role", cascade = CascadeType.ALL, fetch = FetchType.LAZY)private Set<UserRole> userRoles = new HashSet<>();public int getRoleId() {    return roleId;}public void setRoleId(int roleId) {    this.roleId = roleId;}public String getName() {    return name;}public void setName(String name) {    this.name = name;}public Set<UserRole> getUserRoles() {    return userRoles;}public void setUserRoles(Set<UserRole> userRoles) {    this.userRoles = userRoles;}}當我將此代碼作為 Spring 啟動應用程序運行時；我得到以下異常2018-11-05 22:21:35.643 錯誤 5136 --- [main] osboot.SpringApplication：應用程序運行失敗 org.springframework.beans.factory.BeanCreationException：在類路徑資源 [org 中定義名稱為“entityManagerFactory”的 bean 創建時出錯/springframework/boot/autoconfigure/orm/jpa/HibernateJpaConfiguration.class]：調用init方法失敗；嵌套異常是 org.hibernate.boot.registry.classloading.spi.ClassLoadingException: Unable to load class [com.easkart.domain.User] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1745 ) ~[spring-beans-5.1.2.RELEASE.jar:5.1.2.RELEASE] 在 org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory。請幫幫我。