spring security简单登录的认证

一.思路

1.先导入相关配置（使用spring security校验之后，登录拦截的配置）

2.创建一个 WebSecurityConfig 继承 WebSecurityConfigurerAdapter ，重写 configure(HttpSecurity http) 配置表单登录和登出路径和跳转页面操作和 configure(AuthenticationManagerBuilder auth)进行配置用户校验

3.创建一个 UserSecurityService 类 实现 UserDetailsService 接口，重写UserDetails loadUserByUsername(String username)进行表单登录和获取权限操作

4.创建一个 UserSecurity 类实现 UserDetails 接口，重写一些需要的字段

二。代码

1. html页面

<form action="console/login.action" method="post" class="layui-form">
    <input name="loginName" placeholder="账号" type="text" lay-verify="required" maxlength="15" class="layui-input">
    <hr class="hr15">
    <input name="loginPassword" lay-verify="required" maxlength="20" placeholder="密码" type="password"
           class="layui-input">
    <hr class="hr15">
    <input name="loginCaptcha" lay-verify="required" maxlength="4" placeholder="验证码" type="text"
           class="layui-input">
    <img onclick="this.src='console/login/captcha.json" class="login_captcha" src="console/login/captcha.json">
    <hr class="hr15">
    <input value="登录" lay-submit lay-filter="login" style="width:100%" type="submit">
    <hr class="hr20">
</form>

(添加这一段，使页面提示登录报错信息)
<script th:inline="javascript" th:if="${param.error}">

    $(function () {
        var tempErrorMsg = [[${SPRING_SECURITY_LAST_EXCEPTION!=null?SPRING_SECURITY_LAST_EXCEPTION.message:''}]];
        layer.msg(tempErrorMsg);
    });
</script>

2.WebSecurityConfig类

@Configuration
@EnableWebSecurity
@EnableGlobalMethodSecurity(prePostEnabled = true)
public class WebSecurityConfig extends WebSecurityConfigurerAdapter {

    //@Autowired：自动注入bean，@Qualifier（""）：限定哪个bean应该被自动注入
    @Autowired
    @Qualifier("UserSecurityService")
　　 private UserDetailsService userDetailsService;

    @Value("${app.basePath:}")
    private String appBasePath;

    @Value("${server.port:}")
    private String serverPort;

    @Override
    protected void configure(HttpSecurity http) throws Exception {

        String basePath = StringUtils.trimToEmpty(appBasePath);

        http.authorizeRequests()
                .anyRequest()
                .permitAll();

        http.formLogin()
                .loginPage(basePath + ":" + serverPort + "/console/login.html")
                .usernameParameter("loginName")
                .passwordParameter("loginPassword")
                .loginProcessingUrl("/console/login.action")
                .defaultSuccessUrl(basePath + ":" + serverPort + "/console/index.html", true)
                .failureForwardUrl("/console/login.html?error=true")
                .permitAll();

        http.logout()
                .logoutUrl("/console/logout.action")
                .logoutSuccessUrl(basePath + ":" + serverPort + "/console/login.html")
                .permitAll();

        //关闭CSRF跨域
        http.csrf()
                .disable();

        http.headers()
                .frameOptions()
                .disable();
    }

    @Override
    protected void configure(AuthenticationManagerBuilder auth) throws Exception {
        auth.userDetailsService(this.userDetailsService).passwordEncoder(new BCryptPasswordEncoder());
    }
}

3.SecurityUserinfoService

@Component("UserSecurityService")

public class UserSecurityService implements UserDetailsService {

    @Autowired
    private AdminService adminService;

    public static final String CAPTCHA_PARAMETER_NAME = "loginCaptcha";

    @Override
    public UserDetails loadUserByUsername(String username) throws UsernameNotFoundException {

        HttpServletRequest currentServletRequest = RequestTool.getCurrentServletRequest();
        boolean b = CaptchaTool.checkCaptcha(currentServletRequest, CAPTCHA_PARAMETER_NAME);
        if (b == false) {
            throw new SecurityCaptchaException("图形验证码错误");
        }

        UserSecurity userinfo = null;
        Admin admin = this.adminService.getByUserName(username);
        if (admin != null) {
            userinfo = new SecurityUserinfo();
            userinfo.setUsername(admin.getAccount());
            userinfo.setPassword(admin.getPassword());
            userinfo.setEnabled(admin.getIsEnabled());
            userinfo.setUserId(admin.getId());
            userinfo.setAuthorities(****);//自定义设置权限
        } else {
            throw new UsernameNotFoundException("用户不存在");
        }
        return userinfo;
    }
}

4.UserSecurity 

@Setter
public class UserSecurity implements UserDetails {

    private String username;
　　 private String password;
　　 private boolean accountNonExpired = true;
    private boolean accountNonLocked = true;
    private boolean credentialsNonExpired = true;
    private boolean enabled;
　　private Set<***> authorities;//权限字段,需要自己去定义

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

　　@Getter
　　private String userId;
　　
　　@Override
　　public String getPassword() {
 　　 　　return this.password;
　　}

　　@Override
　　public String getUsername() {
    　　return this.username;
　　}

　　@Override
　　public boolean isAccountNonExpired() {
     　return this.accountNonExpired;
　　}

　　@Override
　　public boolean isAccountNonLocked() {
   　　 return this.accountNonLocked;
　　}

　　@Override
　　public boolean isCredentialsNonExpired() {
   　　 return this.credentialsNonExpired;
　　}

　　@Override
　　public boolean isEnabled() {　　
    　　return this.enabled;
　　}

}

注意:如果登录失败的话会出现 Bad credentials 的提示，还要添加 messages.properties 放到 resources 目录下

AbstractUserDetailsAuthenticationProvider.badCredentials=用户名或密码错误
AbstractUserDetailsAuthenticationProvider.credentialsExpired=用户凭证已过期
AbstractUserDetailsAuthenticationProvider.disabled=用户已失效
AbstractUserDetailsAuthenticationProvider.expired=用户帐号已过期
AbstractUserDetailsAuthenticationProvider.locked=用户帐号已被锁定

参考文档：
https://blog.csdn.net/java_zhaoyu/article/details/83029672
https://www.cnblogs.com/ryelqy/p/10304619.html
https://www.codeleading.com/article/5677789104/