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Spring Security 学习之旅开端

SpringSecurity 开始

项目：Github

1. 引入依赖

   org.springframework.boot
        spring-boot-starter-parent
        2.4.1org.springframework.boot
          spring-boot-starter-security
  

在manven依赖仓库中：

2. 配置Security

1.在包下创建SecurityCconfig类,重写configure方法，其中WebSecurity web，可以定义忽略路径

 @Override
    public void configure(WebSecurity web) throws Exception {
        //忽略拦截
        web.ignoring().antMatchers("/sayHello","/doLogin");
    }

2. HttpSecurity http 可以拦截请求,可以定义登录、登出等等

 @Override
    protected void configure(HttpSecurity http) throws Exception {
       http.authorizeRequests()//开启登录
               //表示访问，ex/index 这个接口，需要具备admin角色
                .antMatchers("/es/**").hasRole("admin")
               //表示剩余的其他接口，登录之后能访问
                .anyRequest().authenticated()
                .and()
                .formLogin()
                .loginPage("/login")
               //登录处理接口
                .loginProcessingUrl("/doLogin")
               //定义登录时，用户名的key，默认为username
                .usernameParameter("username")
               //定义登录时，用户密码的key，默认为password
                .passwordParameter("password")
               //定义登录成功的处理器
                .successHandler(new AuthenticationSuccessHandler() {
                    @Override
                    public void onAuthenticationSuccess(HttpServletRequest request, HttpServletResponse response, Authentication authentication) throws IOException, ServletException {
                        response.setContentType("application/json;charset=utf-8");
                        response.sendRedirect("/success.html");//重定向到一个页面
                        MyUserDetails detail= (MyUserDetails)authentication.getPrincipal();
                        System.out.println(detail);
                    }
                })
                .failureHandler(new AuthenticationFailureHandler() {
                    @Override
                    public void onAuthenticationFailure(HttpServletRequest request, HttpServletResponse response, AuthenticationException exception) throws IOException, ServletException {
                        response.setContentType("application/json;charset=utf-8");
                        PrintWriter out = response.getWriter();
                        ResponseBean responseBean = ResponseBean.sendByCode("you have login failure !", 401);
                        String result = new ObjectMapper().writeValueAsString(responseBean);
                        out.write(result);
                        out.flush();
                    }
                })
               //和表单登录相关的接口统统都直接通过
                .permitAll()
                .and()
                .logout()
                .logoutUrl("/logout")
                .logoutSuccessHandler(new LogoutSuccessHandler() {
                    @Override
                    public void onLogoutSuccess(HttpServletRequest request, HttpServletResponse response, Authentication authentication) throws IOException, ServletException {
                        response.setContentType("application/json;charset=utf-8");
                        PrintWriter out = response.getWriter();
                        out.write("you have login out success !");
                        out.flush();
                    }
                })
                .permitAll()
                .and()
                .httpBasic()
                .and()
                .csrf().disable();

    }

简单的表单登录配置，这里的logou是Get请求，若要Post请求，则增加一行

logoutRequestMatcher(new AntPathRequestMatcher("/logout","POST"))

and相当于ssm中标签的结束，permitAll表示登录相关的页面、操作不要拦截。

2. 定义密码加密
   由于security自带盐，用明文加密的都不一样，省去了我们很多时间。

    @Bean
    public PasswordEncoder passwordEncoder(){
        return new BCryptPasswordEncoder();
    }

3. 引入JPA依赖

 org.springframework.boot
            spring-boot-starter-jdbc
 org.springframework.boot
            spring-boot-starter-data-jpa
    org.projectlombok
            lombok
            1.16.10

4. 创建Use类

@Data
@Entity(name = "t_user")
public class User {
    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private Integer id;
    private String username;
    private String password;
    private Integer enabled;
    private Integer locked;
}

5. 创建Role类，为MyDetail作准备

@Data
@Entity(name = "t_role")
public class Role {
    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private Integer id;
    private String name;
    private String chineseName;
}

6. 创建MyDetail类，实现UserDetail
   

@Data
public class MyUserDetails implements UserDetails {

    private User user;

    private List roles;

    @Override
    public Collection extends GrantedAuthority> getAuthorities() {
        List authorities = new ArrayList();
        if (roles != null && roles.size() > 0) {
            for (Role role : roles) {
                authorities.add(new SimpleGrantedAuthority(role.getName()));
            }
        }
        return authorities;
    }

    @Override
    public String getPassword() {
        return user == null ? null : user.getPassword();
    }

    @Override
    public String getUsername() {
        return user == null ? null : user.getUsername();
    }

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

    @Override
    public boolean isAccountNonLocked() {
        Integer locked = user.getLocked();
        if (locked == 0) {
            return true;
        }
        return false;
    }

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

    @Override
    public boolean isEnabled() {
        Integer enabled = user.getEnabled();
        if (enabled == 1) {
            return true;
        }
        return false;
    }

    @Override
    public String toString() {
        return "MyUserDetails{" +
                "user=" + user +
                ", roles=" + roles +
                ‘}‘;
    }
}

7. 编写注入实体方法
   在测试类中，创建对象，jpa会自动去创建表格。做一个示范，由于学习，我先创建的表格，你们可以少走弯路了。比如下面这样:

   实体，加注解
   

@Data
@Entity(name = "t_hill_heavy")
public class HillHeavy {
    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private Integer id;
    private String username;
    private Boolean handsome;
    private String gender;
    private Integer high;
    private boolean rich;

创建Dao

public interface HillHeavyDao extends JpaRepository {
    /**
     * 查询
     * @param username 用户名
     * @author 山沉
     * @date 2020/12/28 22:42
     * @return {@link HillHeavy}
     */
    HillHeavy findHillHeavyByUsername(String username);
}

在测试类中：

@SpringBootTest
class EsSearchApplicationTests {
    private static final Logger logger = LoggerFactory.getLogger(EsSearchApplicationTests.class);

    @Resource
    private HillHeavyDao hillHeavyDao;

    @Test
    void contextLoads() {
        HillHeavy hillHeavy = new HillHeavy();
        hillHeavy.setUsername("山沉");
        hillHeavy.setHandsome(true);
        hillHeavy.setHigh(180);
        hillHeavy.setGender("男");
        hillHeavy.setRich(true);
        hillHeavyDao.save(hillHeavy);
        logger.info("实体----->{}",hillHeavy);
    }

}

这样在用dao层去注入实体，在数据库中，也会生成表格，数据。如下：

是有点自恋，啊。原谅想帅的小胖子。

8. 有了表结构，在UserServiceImpl类，去实现UserDetailService类，重写loadUserByUserName(String username)

   在此方法中，从数据库中根据username，查询出用户，角色，返回UserDetail对象。
   

 @Override
 public UserDetails loadUserByUsername(String username) throws UsernameNotFoundException {
     User user = userMapper.selectUser(username);
     MyUserDetails details = new MyUserDetails();
     if(user == null){
         throw new BadCredentialsException("this username or password is not true!");
     }
     details.setUser(user);
     Integer id = user.getId();
     List roles = userMapper.selectRole(id);
     details.setRoles(roles);
     return details;
 }

3. 测试登录

到此，我们的表单登录，就成功了。通过doLogin登录，携带user信息，进入UsernamePasswordAuthenticationFilter 中，注入用户信息。在从表中获得用户信息与之对比，然后通过登录成功或失败返回给前端JSON格式。

在这里说下，successHandler 是比较强大的，在里面可以作重定向，也可以获取用户信息，等等。集成 defaultSuccessUrl() successForwardUrl() 。

1. defaultSuccessUrl 可以指定登录成功的跳转页面，比如输入 welcome/say,来到login.html 页面。登录成功后，会来的welcome/say。
   

2. sccessForwardUrl 指定登录成功后，到那里。不管登录前你操作的哪一个接口，成功后一律到指定的路径。

测试登录

SpringSecurity之学习路途

标签：输入   direct   ide   date   type   lis   查询   json格式   disable   

原文地址：https://www.cnblogs.com/Choleen/p/14209202.html