maven筹建WEB项目6 - 添加系统自定义用户

maven搭建WEB项目6 - 添加系统自定义用户
    之前添加了SS3作为作为系统的权限验证框架，但用户却是在SS的配置文件中直接配置所得，作为一个优秀的组件，当然是支持用户自定义用户的。
    1、自定义表结构

create table T_SYS_USER--用户表
(
  ID            NUMBER not null primary key,
  USERNAME      VARCHAR2(50),
  PASSWORD      VARCHAR2(50),
  FULLNAME      VARCHAR2(100),
  DEPARTMENT_ID NUMBER
);
create table T_SYS_ROLE--角色表
(
  ID          NUMBER not null primary key,
  NAME        VARCHAR2(20) not null,
  DESCRIPTION VARCHAR2(100)
);
create table T_SYS_USER_ROLE--用户角色关联表
(
  USER_ID NUMBER not null,
  ROLE_ID NUMBER not null
);
add constraint PK_USER_ROLE primary key (USER_ID, ROLE_ID);
alter table T_SYS_USER_ROLE
  add constraint FK_SYS_USER foreign key (USER_ID)
  references t_sys_user (ID);
alter table T_SYS_USER_ROLE
  add constraint FK_SYS_ROLE foreign key (ROLE_ID)
  references t_sys_role (ID);

    2、创建实体类User.java，对应于用户表，使其实现UserDetail类

@Entity
@Table(name="T_SYS_USER")
public class User implements Serializable, UserDetails {

	private static final long serialVersionUID = 1L;
	
	@Id
	@GeneratedValue(strategy=GenerationType.SEQUENCE, generator="SEQ_USER")
	@SequenceGenerator(name="SEQ_USER", sequenceName="SEQ_USER")
	private Long id;
	
	private String username;
	
	private String password;
	
	private String fullname;
	
	@Cascade(value={CascadeType.ALL})
	@ManyToMany(fetch = FetchType.LAZY)
	@JoinTable(name = "T_SYS_USER_ROLE", joinColumns = { @JoinColumn(name = "USER_ID", referencedColumnName = "ID", nullable = false) }, inverseJoinColumns = { @JoinColumn(name = "ROLE_ID", referencedColumnName = "ID", nullable = false) })
	private Set<Role> roles;

	......(各种get,set方法)

	@Override
	public Collection<GrantedAuthority> getAuthorities() {
		return new ArrayList<GrantedAuthority>(getRoles());
	}

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

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

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

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

    创建实体类Role.java，对应于角色表，并使其实现GrantedAuthority 类

@Entity
@Table(name="T_SYS_ROLE")
public class Role implements Serializable, GrantedAuthority {

	private static final long serialVersionUID = 1L;
	
	@Id
	@GeneratedValue(strategy=GenerationType.SEQUENCE, generator="SEQ_ROLE")
	@SequenceGenerator(name="SEQ_ROLE", sequenceName="SEQ_ROLE")
	private Long id;
	
	private String name;
	
	private String description;
	
	@Cascade(value={CascadeType.ALL})
	@ManyToMany(mappedBy = "roles", fetch = FetchType.LAZY)
	private Set<User> users;

        ......(各种get,set方法)

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

    3、UserServiceImpl类实现UserDetailsService类的loadUserByUsername方法

@Override
	public UserDetails loadUserByUsername(String username)
			throws UsernameNotFoundException, DataAccessException {
		User user = userDao.loadUserByName(username);
		if (user == null) {
			log.warn("Login Error : user not found...");
			throw new UsernameNotFoundException("Login Error : " + username + " not found!");
		}
		user.getAuthorities();
		return user;
	}

    4、修改SS配置文件

<authentication-manager>
		<authentication-provider user-service-ref="UserService">
		</authentication-provider>
	</authentication-manager>

   
    这样，SS框架便会使用UserService类的loadUserByUsername方法来进行用户身份验证

    5、插入数据到数据库进行测试
    角色表应该至少要保证有ROLE_USER跟ROLE_ADMIN两个用户