在Spring Boot中使用Spring Security实现权限控制

  <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
        <java.version>1.8</java.version>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-jpa</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-security</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-thymeleaf</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>org.springframework.security</groupId>
            <artifactId>spring-security-test</artifactId>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>org.thymeleaf.extras</groupId>
            <artifactId>thymeleaf-extras-springsecurity4</artifactId>
        </dependency>
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>5.1.40</version>
        </dependency>
        <!-- https://mvnrepository.com/artifact/com.alibaba/fastjson -->
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>fastjson</artifactId>
            <version>1.2.44</version>
        </dependency>

    @Override
    protected void configure(AuthenticationManagerBuilder authenticationManagerBuilder) throws Exception {
        authenticationManagerBuilder.userDetailsService(customUserService());
    }

    /**
     * 1.首先当我们要自定义Spring Security的时候我们需要继承自WebSecurityConfigurerAdapter来完成，相关配置重写对应 方法即可。
     * 2.我们在这里注册CustomUserService的Bean，然后通过重写configure方法添加我们自定义的认证方式。
     * 3.在configure(HttpSecurity http)方法中，我们设置了登录页面，而且登录页面任何人都可以访问，然后设置了登录失败地址，也设置了注销请求，注销请求也是任何人都可以访问的。
     * 4.permitAll表示该请求任何人都可以访问，.anyRequest().authenticated(),表示其他的请求都必须要有权限认证。
     * 5.这里我们可以通过匹配器来匹配路径，比如antMatchers方法，假设我要管理员才可以访问admin文件夹下的内容，我可以这样来写：.
     * antMatchers("/admin/**").hasRole("ROLE_ADMIN")，也
     * 可以设置admin文件夹下的文件可以有多个角色来访问，写法如下：
     * .antMatchers("/admin/**").hasAnyRole("ROLE_ADMIN","ROLE_USER")
     * 6.可以通过hasIpAddress来指定某一个ip可以访问该资源,假设只允许访问ip为210.210.210.210的请求获取admin下的资源，写法如下.a
     * ntMatchers("/admin/**").hasIpAddress("210.210.210.210")
     */
    @Override
    protected void configure(HttpSecurity httpSecurity) throws Exception {
        httpSecurity.authorizeRequests()
//                留意代码顺序
//                首页（不需要登陆就能访问的页面
                .antMatchers("/index").permitAll()
                .anyRequest().authenticated()
//                需要登陆才能访问的页面
                .and().formLogin().loginPage("/login").defaultSuccessUrl("/index").failureUrl("/login?error").permitAll()
                .and().logout().logoutUrl("/logout").logoutSuccessUrl("/login").permitAll()
                .and().rememberMe().tokenValiditySeconds(60 * 60 * 24 * 7).key("kkkkkkkk");
    }

@Entity
public class SysUser extends BaseEntity implements UserDetails {
    @Id
    @GeneratedValue
    private Long id;
    private String username;
    private String password;
    /**
     * CascadeType.REFRESH：级联刷新，当多个用户同时作操作一个实体，为了用户取到的数据是实时的，
     * 在用实体中的数据之前就可以调用一下refresh()方法！
     * FetchType.EAGER：急加载,立即从数据库中加载
     */
    @ManyToMany(cascade = {CascadeType.REFRESH}, fetch = FetchType.EAGER)
    private List<SysRole> roles;

    public void setId(Long id) {
        this.id = id;
    }

    public Long getId() {
        return this.id;
    }

    public void setUsername(String username) {
        this.username = username;
    }

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

    public void setPassword(String password) {
        this.password = password;
    }

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

    public void setRoles(List<SysRole> roles) {
        this.roles = roles;
    }

    public List<SysRole> getRoles() {
        return this.roles;
    }

    @Override
    public Collection<? extends GrantedAuthority> getAuthorities() {
        List<GrantedAuthority> grantedAuthorityList = new ArrayList<>();
        List<SysRole> sysRoleList = this.getRoles();
        for (SysRole sysRole : sysRoleList) {
            grantedAuthorityList.add(new SimpleGrantedAuthority(sysRole.getName()));
        }
        return grantedAuthorityList;
    }


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

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

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

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