一、权限认证模拟操作:
编写Security配置类:
package cn.zeal4j.configuration; import org.springframework.context.annotation.Bean; import org.springframework.context.annotation.Configuration; import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder; import org.springframework.security.crypto.password.PasswordEncoder; /** * @author Administrator * @file IntelliJ IDEA Spring-Security-Tutorial * @create 2020 09 27 21:55 */ @Configuration public class SecurityConfiguration { @Bean public PasswordEncoder getPasswordEncoder() { return new BCryptPasswordEncoder(); } }
编写认证逻辑:
package cn.zeal4j.service; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.security.core.authority.AuthorityUtils; import org.springframework.security.core.userdetails.User; import org.springframework.security.core.userdetails.UserDetails; import org.springframework.security.core.userdetails.UserDetailsService; import org.springframework.security.core.userdetails.UsernameNotFoundException; import org.springframework.security.crypto.password.PasswordEncoder; import org.springframework.stereotype.Service; /** * @author Administrator * @file IntelliJ IDEA Spring-Security-Tutorial * @create 2020 09 27 21:57 */ @Service public class UserDetailsServiceImpl implements UserDetailsService { @Autowired private PasswordEncoder passwordEncoder; @Override public UserDetails loadUserByUsername(String username) throws UsernameNotFoundException { // 1、通过提供的用户名参数访问数据库,查询记录返回过来,如果记录不存在则抛出异常 // username = "admin"; if (!"admin".equals(username)) throw new UsernameNotFoundException("用户名不存在"); // 2、查询出来的凭证是被加密了的,这里是模拟查询的密码 String encode = passwordEncoder.encode("123456"); // 权限不可以为空,所以需要这么一个工具方法简单实现 return new User(username, encode, AuthorityUtils.commaSeparatedStringToAuthorityList("admin,normal")); } }
重启项目,登陆测试:
用户名称是admin,密码是123456
填写的不是admin也一样报这个错误,但是控制台并没有抛出我们设置的异常
也就是说,UserDetails对象交给其他Security的方法来判断了
二、自定义登陆页面
在static目录编写自己的登陆页面
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>Title</title> <style type="text/css"> h3,p { text-align: center; } </style> </head> <body> <h3>custom login page</h3> <form method="post" action="/login.action" > <p>username: <input type="text" name="username"></p> <p>password: <input type="password" name="password"></p> <p><input type="submit" value="login"></p> </form> </body> </html>
在模版目录内编写main.html
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>Main-Page</title> </head> <body> <h3>This is main page</h3> </body> </html>
在之前的Security配置类中增加这些配置:
package cn.zeal4j.configuration; import org.springframework.context.annotation.Bean; import org.springframework.context.annotation.Configuration; import org.springframework.security.config.annotation.web.builders.HttpSecurity; import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter; import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder; import org.springframework.security.crypto.password.PasswordEncoder; /** * @author Administrator * @file IntelliJ IDEA Spring-Security-Tutorial * @create 2020 09 27 21:55 */ @Configuration public class SecurityConfiguration extends WebSecurityConfigurerAdapter { @Bean public PasswordEncoder getPasswordEncoder() { return new BCryptPasswordEncoder(); } @Override protected void configure(HttpSecurity httpSecurity) throws Exception { httpSecurity.formLogin(). // 设置登陆行为方式为表单登陆 loginPage("/login.html"). // 设置登陆页面URL路径 loginProcessingUrl("/login.action"). // 设置表单提交URL路径 successForwardUrl("/main.page"); // 设置认证成功跳转URL路径 httpSecurity.authorizeRequests(). antMatchers("/login.html").permitAll(). // 登陆页面允许任意访问 anyRequest().authenticated(); // 其他请求均需要被授权访问 // CSRF攻击拦截关闭 httpSecurity.csrf().disable(); } }
因为main页面在模版目录中,所以需要一个控制器去跳转进去
package cn.zeal4j.controller; import org.springframework.stereotype.Controller; import org.springframework.web.bind.annotation.RequestMapping; /** * @author Administrator * @file IntelliJ IDEA Spring-Security-Tutorial * @create 2020 09 27 22:35 */ @Controller public class LoginController { @RequestMapping("main.page") public String toMainPage() { return "main"; // 模版内的页面不允许重定向,忘了忘了 } }
登陆逻辑不发生变化,启动项目访问测试:
成功跳转!!!
三、自定义登陆失败页面
首先在static目录写一个登陆失败的页面
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>Error-Page</title> <style type="text/css"> h3,p { text-align: center; } </style> </head> <body> <h3>This is Error Page</h3> <p>Wrong Request, Please return to login page <a href="/login.html">click this link</a></p> </body> </html>
Security的失败页面跳转也是由配置Bean的方法决定的,请求方式是POST请求
所以这个登陆失败的页面跳转也需要一个控制器处理,因为这个页面不在模版之内,所以可以使用重定向
package cn.zeal4j.configuration; import org.springframework.context.annotation.Bean; import org.springframework.context.annotation.Configuration; import org.springframework.security.config.annotation.web.builders.HttpSecurity; import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter; import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder; import org.springframework.security.crypto.password.PasswordEncoder; /** * @author Administrator * @file IntelliJ IDEA Spring-Security-Tutorial * @create 2020 09 27 21:55 */ @Configuration public class SecurityConfiguration extends WebSecurityConfigurerAdapter { @Bean public PasswordEncoder getPasswordEncoder() { return new BCryptPasswordEncoder(); } @Override protected void configure(HttpSecurity httpSecurity) throws Exception { httpSecurity.formLogin(). // 设置登陆行为方式为表单登陆 loginPage("/login.html"). // 设置登陆页面URL路径 loginProcessingUrl("/login.action"). // 设置表单提交URL路径 successForwardUrl("/main.page"). // 设置认证成功跳转URL路径 POST请求 failureForwardUrl("/error.page"); // 设置认证失败跳转URL路径 POST请求 httpSecurity.authorizeRequests(). antMatchers("/login.html").permitAll(). // 登陆页面允许任意访问 antMatchers("/error.html").permitAll(). // 失败跳转后重定向的页面也需要被允许访问 anyRequest().authenticated(); // 其他请求均需要被授权访问 // CSRF攻击拦截关闭 httpSecurity.csrf().disable(); } }
注意授权的请求处理,匹配的URL是重定向的地址,而不是控制器的URL。
控制器方法:
package cn.zeal4j.controller; import org.springframework.stereotype.Controller; import org.springframework.web.bind.annotation.PostMapping; import org.springframework.web.bind.annotation.RequestMapping; /** * @author Administrator * @file IntelliJ IDEA Spring-Security-Tutorial * @create 2020 09 27 22:35 */ @Controller public class LoginController { @RequestMapping("main.page") public String toMainPage() { return "main"; // 模版内的页面不允许重定向,忘了忘了 } @PostMapping("error.page") // 控制器不支持POST请求跳转解析, 需要控制器跳转 Resolved [org.springframework.web.HttpRequestMethodNotSupportedException: Request method 'POST' not supported] public String redirectToErrorPage() { return "redirect:/error.html"; // 重定向要写/标识 区分模版解析 } }
登陆失败测试: