th:选中引发异常

我的胸腺细胞不能编译,我不明白出了什么问题。我需要创建复选框并只设置用户包含的选中角色。 我相信这个选项: 原因:组织。attoparser。ParseException:异常评估SpringEL表达式:“user.getRoles().contains(${role})”(模板:“editUser”-第19行,第54列) 位于组织。attoparser。马克·帕瑟。parseDocument(MarkupParser.java:393)~[attoparser-2.0.5.RELEASE.jar:2.0.5.RELEASE] 位于组织。attoparser。马克·帕瑟。parse(MarkupParser.java:257)~[attoparser-2.0.5.RELEASE.jar:2.0.5.RELEASE] 位于组织。百里香叶。templateparser。加成AbstractMarkupTemplateParser。parse(AbstractMarkupTemplateParser.java:230)~[thymeleaf-3.0.15.RELEASE.jar:3.0.15.RELEASE] 。。。89省略公共框架

角色(实体):

@Entity
@Table(name = "sweater_roles")
public class Role implements GrantedAuthority {
    public static List<Role> allRoles = Arrays.asList(new Role("USER"), new Role("ADMIN"));

    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private Long id;

    private String name;

    public Role(String name) {
        this.name = name;
    }

    public Role() {
    }

    @Override
    public boolean equals(Object o) {
        if (this == o) return true;
        if (!(o instanceof Role)) return false;
        Role role = (Role) o;
        return getName().equals(role.getName());
    }

    @Override
    public int hashCode() {
        return Objects.hash(getName());
    }

    public Long getId() {
        return id;
    }

    public void setId(Long id) {
        this.id = id;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    @Override
    public String getAuthority() {
        return getName();
    }
}

用户(实体):

@Entity
@Table(name = "sweater_user")
public class User implements UserDetails{
    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private Long id;

    private String username;

    private String password;

    private boolean active;

    @ManyToMany(cascade = CascadeType.ALL, fetch = FetchType.EAGER)
    @JoinTable(
            name = "sweater_user_role",
            joinColumns = @JoinColumn(name = "user_id", referencedColumnName = "id"),
            inverseJoinColumns = @JoinColumn(name = "role_id", referencedColumnName = "id")
    )
    private Collection<Role> roles;

    public User(String username, String password, boolean active, Collection<Role> roles) {
        this.username = username;
        this.password = password;
        this.active = active;
        this.roles = roles;
    }

    public User() {
    }

    @Override
    public boolean isAccountNonExpired() {
        return true;
    }

    @Override
    public boolean isAccountNonLocked() {
        return true;
    }

    @Override
    public boolean isCredentialsNonExpired() {
        return true;
    }

    @Override
    public boolean isEnabled() {
        return isActive();
    }

    @Override
    public Collection<? extends GrantedAuthority> getAuthorities() {
        return getRoles();
    }


    public Long getId() {
        return id;
    }

    public void setId(Long id) {
        this.id = id;
    }

    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 boolean isActive() {
        return active;
    }

    public void setActive(boolean active) {
        this.active = active;
    }

    public Collection<Role> getRoles() {
        return roles;
    }

    public void setRoles(Collection<Role> roles) {
        this.roles = roles;
    }
}

控制器:

@GetMapping("{user}")
    public String editUser(@PathVariable User user, Model model){
        model.addAttribute("user", user);
        model.addAttribute("roles", Role.allRoles);
        return "editUser";
    }

HTML文件:

Roles:
    <th:block th:each="role : ${roles}">
        <div>
            <label th:for="${role}" th:text="${role}"></label>
            <input type="checkbox" th:name="${role}" th:checked="${user.getRoles().contains(${role})}">
        </div>
    </th:block>