<dependency>
	<groupId>org.springframework.boot</groupId>
	<artifactId>spring-boot-starter-security</artifactId>
 </dependency>

package com.dyt.config;
import org.springframework.security.config.annotation.authentication.builders.AuthenticationManagerBuilder;
import org.springframework.security.config.annotation.web.builders.HttpSecurity;
import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;
import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;
@EnableWebSecurity // 開(kāi)啟WebSecurity模式
public class SecurityConfig extends WebSecurityConfigurerAdapter {
	@Override
	protected void configure(HttpSecurity http) throws Exception {
	}
}

//授權(quán)
// 鏈?zhǔn)骄幊?
@Override
protected void configure(HttpSecurity http) throws Exception {
	//首頁(yè)所有人可以訪問(wèn)，功能頁(yè)只有對(duì)應(yīng)有權(quán)限的人才能訪問(wèn)
	//請(qǐng)求授權(quán)的規(guī)則
	http.authorizeRequests()
		.antMatchers("/").permitAll()
		.antMatchers("/level1/**").hasRole("vip1")
		.antMatchers("/level2/**").hasRole("vip2")
		.antMatchers("/level3/**").hasRole("vip3");
	//沒(méi)有權(quán)限默認(rèn)會(huì)到登錄頁(yè)面，需要開(kāi)啟登錄頁(yè)面
	// /login 請(qǐng)求來(lái)到登錄頁(yè)
	// /login?error 重定向到這里表示登錄失敗
	http.formLogin();
}

//認(rèn)證
//在內(nèi)存中定義，也可以在jdbc中去拿....
//Spring security 5.0中新增了多種加密方式，也改變了密碼的格式。
//要想我們的項(xiàng)目還能夠正常登陸，需要修改一下configure中的代碼。我們要將前端傳過(guò)來(lái)的密碼進(jìn)行某種方式加密
//spring security 官方推薦的是使用bcrypt加密方式。
	@Override
	protected void configure(AuthenticationManagerBuilder auth) throws Exception {
		auth.inMemoryAuthentication().passwordEncoder(new BCryptPasswordEncoder())
				.withUser("gdh").password(new BCryptPasswordEncoder().encode("123")).roles("vip2","vip3")
				.and()
				.withUser("root").password(new BCryptPasswordEncoder().encode("456")).roles("vip1","vip2","vip3")
				.and()
				.withUser("user").password(new BCryptPasswordEncoder().encode("123")).roles("vip1");
	}

//定制請(qǐng)求的授權(quán)規(guī)則
@Override
protected void configure(HttpSecurity http) throws Exception {
   //....
   //開(kāi)啟自動(dòng)配置的注銷(xiāo)的功能
	  // /logout 注銷(xiāo)請(qǐng)求
   http.logout();
}

<a class="item" th:href="@{/logout}">
   <i class="address card icon"></i> 注銷(xiāo)
</a>

// .logoutSuccessUrl("/"); 注銷(xiāo)成功來(lái)到首頁(yè)
http.logout().logoutSuccessUrl("/");

<!-- https://mvnrepository.com/artifact/org.thymeleaf.extras/thymeleaf-extras-springsecurity4 -->
<dependency>
   <groupId>org.thymeleaf.extras</groupId>
   <artifactId>thymeleaf-extras-springsecurity5</artifactId>
   <version>3.0.4.RELEASE</version>
</dependency>

xmlns:sec="http://www.thymeleaf.org/thymeleaf-extras-springsecurity5"

<!--登錄注銷(xiāo)-->
	<div class="right menu">
   <!--如果未登錄-->
   <div sec:authorize="!isAuthenticated()">
	   <a class="item" th:href="@{/login}">
		   <i class="address card icon"></i> 登錄
	   </a>
   </div>
   <!--如果已登錄-->
   <div sec:authorize="isAuthenticated()">
	   <a class="item">
		   <i class="address card icon"></i>
		  用戶(hù)名：<span sec:authentication="principal.username"></span>
		  角色：<span sec:authentication="principal.authorities"></span>
	   </a>
   </div>
  <div sec:authorize="isAuthenticated()">
	   <a class="item" th:href="@{/logout}">
		   <i class="address card icon"></i> 注銷(xiāo)
	   </a>
   </div>
</div>

http.csrf().disable();//關(guān)閉csrf功能:跨站請(qǐng)求偽造,默認(rèn)只能通過(guò)post方式提交logout請(qǐng)求
http.logout().logoutSuccessUrl("/");

<!-- sec:authorize="hasRole('vip1')" -->
<div class="column" sec:authorize="hasRole('vip1')">
   <div class="ui raised segment">
	   <div class="ui">
		   <div class="content">
			   <h5 class="content">Level 1</h5>
			   <hr>
			   <div><a th:href="@{/level1/1}"><i class="bullhorn icon"></i> Level-1-1</a></div>
			   <div><a th:href="@{/level1/2}"><i class="bullhorn icon"></i> Level-1-2</a></div>
			   <div><a th:href="@{/level1/3}"><i class="bullhorn icon"></i> Level-1-3</a></div>
		   </div>
	   </div>
   </div>
</div>
<div class="column" sec:authorize="hasRole('vip2')">
   <div class="ui raised segment">
	   <div class="ui">
		   <div class="content">
			   <h5 class="content">Level 2</h5>
			   <hr>
			   <div><a th:href="@{/level2/1}"><i class="bullhorn icon"></i> Level-2-1</a></div>
			   <div><a th:href="@{/level2/2}"><i class="bullhorn icon"></i> Level-2-2</a></div>
			   <div><a th:href="@{/level2/3}"><i class="bullhorn icon"></i> Level-2-3</a></div>
		   </div>
	   </div>
   </div>
</div>
<div class="column" sec:authorize="hasRole('vip3')">
   <div class="ui raised segment">
	   <div class="ui">
		   <div class="content">
			   <h5 class="content">Level 3</h5>
			   <hr>
			   <div><a th:href="@{/level3/1}"><i class="bullhorn icon"></i> Level-3-1</a></div>
			   <div><a th:href="@{/level3/2}"><i class="bullhorn icon"></i> Level-3-2</a></div>
			   <div><a th:href="@{/level3/3}"><i class="bullhorn icon"></i> Level-3-3</a></div>
		   </div>
	   </div>
   </div>
</div>

//定制請(qǐng)求的授權(quán)規(guī)則
@Override
protected void configure(HttpSecurity http) throws Exception {
//。。。。。。。。。。。
   //記住我
   http.rememberMe();
}

http.formLogin().loginPage("/toLogin");

<a class="item" th:href="@{/toLogin}">
   <i class="address card icon"></i> 登錄
</a>

<form th:action="@{/login}" method="post">
   <div class="field">
	   <label>Username</label>
	   <div class="ui left icon input">
		   <input type="text" placeholder="Username" name="username">
		   <i class="user icon"></i>
	   </div>
   </div>
   <div class="field">
	   <label>Password</label>
	   <div class="ui left icon input">
		   <input type="password" name="password">
		   <i class="lock icon"></i>
	   </div>
   </div>
   <input type="submit" class="ui blue submit button"/>
</form>

http.formLogin()
  .usernameParameter("username")
  .passwordParameter("password")
  .loginPage("/toLogin")
  .loginProcessingUrl("/login"); // 登陸表單提交請(qǐng)求

<input type="checkbox" name="remember"> 記住我

//定制記住我的參數(shù)！
http.rememberMe().rememberMeParameter("remember");

package com.dyt.config;
import org.springframework.security.config.annotation.authentication.builders.AuthenticationManagerBuilder;
import org.springframework.security.config.annotation.web.builders.HttpSecurity;
import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;
import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;
import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
//AOP 橫切 攔截器
@EnableWebSecurity // 開(kāi)啟WebSecurity模式
public class SecurityConfig extends WebSecurityConfigurerAdapter {
	//授權(quán)
	// 鏈?zhǔn)骄幊?
	@Override
	protected void configure(HttpSecurity http) throws Exception {
		//首頁(yè)所有人可以訪問(wèn)，功能頁(yè)只有對(duì)應(yīng)有權(quán)限的人才能訪問(wèn)
		//請(qǐng)求授權(quán)的規(guī)則
		http.authorizeRequests()
				.antMatchers("/").permitAll()
				.antMatchers("/level1/**").hasRole("vip1")
				.antMatchers("/level2/**").hasRole("vip2")
				.antMatchers("/level3/**").hasRole("vip3");
		//沒(méi)有權(quán)限默認(rèn)會(huì)到登錄頁(yè)面，需要開(kāi)啟登錄頁(yè)面
		http.formLogin()
				.usernameParameter("username")
				.passwordParameter("password")
				.loginPage("/toLogin")
				.loginProcessingUrl("/login"); // 登陸表單提交請(qǐng)求
		http.csrf().disable();//關(guān)閉csrf功能:跨站請(qǐng)求偽造,默認(rèn)只能通過(guò)post方式提交logout請(qǐng)求
		//記住我
		http.rememberMe().rememberMeParameter("remember");
		//開(kāi)啟自動(dòng)配置的注銷(xiāo)的功能
		// /logout 注銷(xiāo)請(qǐng)求
		// .logoutSuccessUrl("/"); 注銷(xiāo)成功來(lái)到首頁(yè)
		http.logout().logoutSuccessUrl("/");
	}
	//認(rèn)證
	//在內(nèi)存中定義，也可以在jdbc中去拿....
	//Spring security 5.0中新增了多種加密方式，也改變了密碼的格式。
	//要想我們的項(xiàng)目還能夠正常登陸，需要修改一下configure中的代碼。我們要將前端傳過(guò)來(lái)的密碼進(jìn)行某種方式加密
	//spring security 官方推薦的是使用bcrypt加密方式。
	@Override
	protected void configure(AuthenticationManagerBuilder auth) throws Exception {
		auth.inMemoryAuthentication().passwordEncoder(new BCryptPasswordEncoder())
				.withUser("gdh").password(new BCryptPasswordEncoder().encode("123")).roles("vip2","vip3")
				.and()
				.withUser("root").password(new BCryptPasswordEncoder().encode("456")).roles("vip1","vip2","vip3")
				.and()
				.withUser("user").password(new BCryptPasswordEncoder().encode("123")).roles("vip1");
	}
}