bug fix: "could not initialize proxy - no Session"

src/main/java/com/example/springdemo/entities/Merchants.java

@@ -25,7 +25,7 @@ public class Merchants {
     private String description;//店铺描述
 
     //商家和菜品是一对多的关系，有mappedBy的时候，表示Merchants的dishes 字段放弃维护权，而将维护权交给了Dishes的关联属性merchants
-    @OneToMany(cascade = CascadeType.ALL, fetch = FetchType.LAZY)
+    @OneToMany(cascade = CascadeType.ALL, fetch = FetchType.EAGER)
     @JoinTable(name = "merchants_dishes",
             joinColumns = @JoinColumn(name = "merchantsId"),
             inverseJoinColumns = @JoinColumn(name = "dishesId"))

src/main/java/com/example/springdemo/entities/Orders.java

@@ -23,7 +23,7 @@ public class Orders {
     @GeneratedValue(strategy = GenerationType.IDENTITY)
     private Long id;//订单ID
 
-    @OneToMany(cascade = CascadeType.ALL, fetch = FetchType.LAZY)
+    @OneToMany(cascade = CascadeType.ALL, fetch = FetchType.EAGER)
     @JoinTable(name = "orders_orderDishes",
             joinColumns = {@JoinColumn(name = "ordersId", referencedColumnName = "id")},
             inverseJoinColumns = {@JoinColumn(name = "orderDishesId", referencedColumnName = "id")})

src/main/java/com/example/springdemo/entities/RBAC/Permissions.java

@@ -14,8 +14,8 @@ public class Permissions {
     @Id
     @GeneratedValue(strategy = GenerationType.IDENTITY)
     private Long id;//主键，权限ID
-    @Column(name = "description")
+    @Column(name = "name")
-    private String description;//权限名称
+    private String name;//权限名称
     @Column(name = "url")
     private String url;//权限对应的URL
 }

src/main/java/com/example/springdemo/entities/RBAC/RolesPermissions.java

@@ -17,11 +17,11 @@ public class RolesPermissions {
     @GeneratedValue(strategy = GenerationType.IDENTITY)
     private Long id;//主键
 
-    @OneToMany(targetEntity = Roles.class, cascade = CascadeType.ALL, fetch = FetchType.LAZY)
+    @OneToMany(targetEntity = Roles.class, cascade = CascadeType.ALL, fetch = FetchType.EAGER)
     @Column(name = "rolesId")
     private List<Roles> roles;//角色ID
 
-    @OneToMany(targetEntity = Permissions.class, cascade = CascadeType.ALL, fetch = FetchType.LAZY)
+    @OneToMany(targetEntity = Permissions.class, cascade = CascadeType.ALL, fetch = FetchType.EAGER)
     @Column(name = "permissionsId")
     private List<Permissions> permissions;//权限ID
 }

src/main/java/com/example/springdemo/entities/Users.java

@@ -25,13 +25,13 @@ public class Users {
     private String address;//家庭住址
 
     //一个用户可能会有多个订单，关系是一对多
-    @OneToMany(cascade = CascadeType.ALL, fetch = FetchType.LAZY)
+    @OneToMany(cascade = CascadeType.ALL, fetch = FetchType.EAGER)
     @JoinTable(name = "users_orders",
             joinColumns = {@JoinColumn(name = "usersId", referencedColumnName = "id")},
             inverseJoinColumns = {@JoinColumn(name = "ordersId", referencedColumnName = "id")})
     private List<Orders> orders;//订单
 
-    @ManyToOne(cascade = CascadeType.ALL, fetch = FetchType.LAZY)
+    @ManyToOne(cascade = CascadeType.ALL, fetch = FetchType.EAGER)
     @JoinTable(name = "users_roles",
             joinColumns = {@JoinColumn(name = "usersId", referencedColumnName = "id")},
             inverseJoinColumns = {@JoinColumn(name = "rolesId", referencedColumnName = "id")})