發生這個問題時, 主要是因為object 中有多個@JsonManagedReference 找到, 因此會令serialize 時不能正常找到相對應的class resolve.
解決方法是在@JsonManagedReference 及相對應的@JsonBackReference 加入value 令其相呼應.
@JsonManagedReference(value="rolePermissionMappings")
public List<RolePermissionMapping> getRolePermissionMappings() {
return rolePermissionMappings;
}
@JsonBackReference(value="rolePermissionMappings")
public Role getRole() {
return role;
}
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