SpringSecurity03 基于内存验证

1 需求

　　现有一个编写好的系统，需要实现用户登录验证即可，同时根据用户的权限来限制用户可以访问的接口

2 编写SpringSecurity配置类

　　继承 WebSecurityConfigurerAdapter 类并重写configure 方法

package cn.xiangxu.spring_security_system;

//import cn.xiangxu.spring_security_system.service.MyUserService;
import cn.xiangxu.spring_security_system.utils.MyPasswordEncoder;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Configuration;
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.builders.WebSecurity;
import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;
import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;

/**
 * 权限服务类
 */
@Configuration // 等同于XML中的beans
@EnableWebSecurity // 开启webSecurity功能
public class SpringSecurityConfig extends WebSecurityConfigurerAdapter {

//    @Autowired
//    private MyUserService myUserService;

    @Override
    protected void configure(AuthenticationManagerBuilder auth) throws Exception {

        // 直接将用户信息和权限写死
        auth.inMemoryAuthentication()
                .withUser("admin")
                .password("123456")
                .roles("ADMIN");
        auth.inMemoryAuthentication()
                .withUser("wys")
                .password("123456")
                .roles("ADMIN");
        auth.inMemoryAuthentication()
                .withUser("demo")
                .password("123456")
                .roles("USER");

//        auth.userDetailsService(myUserService).passwordEncoder(new MyPasswordEncoder()); // 利用自定义的UserService进行管理
    }

    @Override
    protected void configure(HttpSecurity http) throws Exception {
        http.authorizeRequests()
                .antMatchers("/").permitAll() // 主页面请求拦截排除
                .anyRequest().authenticated()  // 除主页面外的所有请求都会被拦截
                .and()
                .logout().permitAll() // 注销请求拦截排除
                .and()
                .formLogin(); // 设置使用表单登录的方式
        http.csrf().disable(); // 关闭csrf验证
    }

    @Override
    public void configure(WebSecurity web) throws Exception {
        // 拦截排除设置
        web.ignoring().antMatchers("/js/**", "/css/**", "/images/**");
    }


}

SpringSecurity配置类

　　坑01：由于从springboot2.0.3开始使用的springsecurity的版本是5.x，这个版本需要提供一个PasswordEncoder的实例，否则就会如下错误

　　解坑01之方法01：只需要创建一个PasswordEncoder的Bean并被spring容器所管理即可

　　　　》创建一个实现了PasswordEncoder接口的实现类MyPasswordEncoder，在encode方法中编写加密算法，在matches方法中编写匹配算法

　　　　》在配置文件中配置MyPasswordEncoder对应的Bean即可（在一个标注了@Configuration注解的类中添加下面的逻辑即可）

　　解坑01之方法02：在创建内存用户的时候指定一个PasswordEncoder实例

　　　　》创建一个实现了PasswordEncoder接口的实现类MyPasswordEncoder，在encode方法中编写加密算法，在matches方法中编写匹配算法

　　　　》创建内存用户的时候直接指定PasswordEncoder即可

3 编写一些接口用于测试

package cn.xiangxu.spring_security_system;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.security.access.prepost.PreAuthorize;
import org.springframework.security.config.annotation.method.configuration.EnableGlobalMethodSecurity;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;

@SpringBootApplication
@RestController
//@EnableGlobalMethodSecurity(prePostEnabled = true) // 开启@PreAuthorize注解
public class SpringSecuritySystemApplication {

    public static void main(String[] args) {
        SpringApplication.run(SpringSecuritySystemApplication.class, args);
    }

    @GetMapping(value = "/")
    public String home() {
        return "Welcome to study springSecurity.";
    }

    @GetMapping(value = "/hello")
    public String hello() {
        return "hello boy";
    }

//    @PreAuthorize("hasRole('ROLE_ADMIN')") // 设定权限校验：只用ADMIN角色才能调用该接口
    @GetMapping("/roleAuth")
    public String role() {
        return "admin role";
    }
}

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4 请求测试接口

　　利用硬编码的用户名和密码进行登录

5 设置权限校验

　　5.1 在控制类上添加 @EnableGlobalMethodSecurity 注解

//
// Source code recreated from a .class file by IntelliJ IDEA
// (powered by Fernflower decompiler)
//

package org.springframework.security.config.annotation.method.configuration;

import java.lang.annotation.Documented;
import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;
import org.springframework.context.annotation.AdviceMode;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Import;
import org.springframework.security.config.annotation.authentication.configuration.EnableGlobalAuthentication;

@Retention(RetentionPolicy.RUNTIME)
@Target({ElementType.TYPE})
@Documented
@Import({GlobalMethodSecuritySelector.class})
@EnableGlobalAuthentication
@Configuration
public @interface EnableGlobalMethodSecurity {
    boolean prePostEnabled() default false;

    boolean securedEnabled() default false;

    boolean jsr250Enabled() default false;

    boolean proxyTargetClass() default false;

    AdviceMode mode() default AdviceMode.PROXY;

    int order() default 2147483647;
}

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　　　　@EnableGlobalMethodSecurity(prePostEnabled = true)

　　　　代码解释：

　　　　　　整个项目启用方法角色验证注解，prePostEnabled = true 表示启用@PreAuthorize 和 @PostAuthorize 两个方法角色验证注解（@PreFilter() 和 @PostFilter() 也会被启用）

　　5.2 在需要进行角色验证的接口上方添加 @PreAuthorize 注解

　　　　@PreAuthorize("hasRole('ROLE_ADMIN')")

　　　　代码解释：

　　　　　　有该注解的方法只有角色是ADMIN的用户才可以访问

package cn.xiangxu.spring_security_system;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.security.access.prepost.PostAuthorize;
import org.springframework.security.access.prepost.PreAuthorize;
import org.springframework.security.config.annotation.method.configuration.EnableGlobalMethodSecurity;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;

@SpringBootApplication
@RestController
@EnableGlobalMethodSecurity(prePostEnabled = true) // 开启@PreAuthorize注解
public class SpringSecuritySystemApplication {

    public static void main(String[] args) {
        SpringApplication.run(SpringSecuritySystemApplication.class, args);
    }

    @GetMapping(value = "/")
    public String home() {
        return "Welcome to study springSecurity.";
    }

    @GetMapping(value = "/hello")
    public String hello() {
        return "hello boy";
    }

    @PreAuthorize("hasRole('ROLE_ADMIN')") // 设定权限校验：只用ADMIN角色才能调用该接口
    @GetMapping("/roleAuth")
    public String role() {
        return "admin role";
    }
}

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6 权限校验注解

　　6.1 @PreAuthorize

　　　　在执行方法之前进行权限校验

　　　　6.1.1 角色验证

　　　　　　例如：@PreAuthorize("hasRole('ROLE_ADMIN') or hasRole('ROLE_USER')") // ADMIN 和 USER 角色都有权限调用这个接口

package cn.xiangxu.spring_security_system;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.security.access.prepost.PostAuthorize;
import org.springframework.security.access.prepost.PostFilter;
import org.springframework.security.access.prepost.PreAuthorize;
import org.springframework.security.access.prepost.PreFilter;
import org.springframework.security.config.annotation.method.configuration.EnableGlobalMethodSecurity;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;

@SpringBootApplication
@RestController
@EnableGlobalMethodSecurity(prePostEnabled = true) // 开启@PreAuthorize注解
public class SpringSecuritySystemApplication {

    public static void main(String[] args) {
        SpringApplication.run(SpringSecuritySystemApplication.class, args);
    }

    @GetMapping(value = "/")
    public String home() {
        return "Welcome to study springSecurity.";
    }

    @GetMapping(value = "/hello")
    public String hello() {
        return "hello boy";
    }

    @PreAuthorize("hasRole('ROLE_ADMIN')") // 设定权限校验：只用ADMIN角色才能调用该接口
    @GetMapping("/roleAuth")
    public String role() {
        return "admin role";
    }

    @PreAuthorize("hasRole('ROLE_ADMIN') or hasRole('ROLE_USER')") // ADMIN 和 USER 角色都有权限调用这个接口
    @GetMapping("/test01")
    public String rest01() {
        return "test01";
    }
}

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　　　　6.1.2 参数验证01

　　　　　　例如：@PreAuthorize("#id < 10")

　　　　　　　　代码解释：方法必须有id参数，而且参数的值必须小于10

package cn.xiangxu.spring_security_system;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.security.access.prepost.PostAuthorize;
import org.springframework.security.access.prepost.PostFilter;
import org.springframework.security.access.prepost.PreAuthorize;
import org.springframework.security.access.prepost.PreFilter;
import org.springframework.security.config.annotation.method.configuration.EnableGlobalMethodSecurity;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RestController;

@SpringBootApplication
@RestController
@EnableGlobalMethodSecurity(prePostEnabled = true) // 开启@PreAuthorize注解
public class SpringSecuritySystemApplication {

    public static void main(String[] args) {
        SpringApplication.run(SpringSecuritySystemApplication.class, args);
    }

    @GetMapping(value = "/")
    public String home() {
        return "Welcome to study springSecurity.";
    }

    @GetMapping(value = "/hello")
    public String hello() {
        return "hello boy";
    }

    @PreAuthorize("hasRole('ROLE_ADMIN')") // 设定权限校验：只用ADMIN角色才能调用该接口
    @GetMapping("/roleAuth")
    public String role() {
        return "admin role";
    }

    @PreAuthorize("hasRole('ROLE_ADMIN') or hasRole('ROLE_USER')") // ADMIN 和 USER 角色都有权限调用这个接口
    @GetMapping("/test01")
    public String rest01() {
        return "test01";
    }

    @PreAuthorize("#id < 10")
    @GetMapping("/test02/{id}")
    public String test02(@PathVariable("id") Integer id) {
        return "test02 -> 获取到的ID为：" + id;
    }
}

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　　　　6.1.3 参数验证03

　　　　　　例如：@PreAuthorize("principal.username.equals(#username)")

　　　　　　　　代码解释：方法必须有username参数，而且参数的值必须是登录用户的用户名

package cn.xiangxu.spring_security_system;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.security.access.prepost.PostAuthorize;
import org.springframework.security.access.prepost.PostFilter;
import org.springframework.security.access.prepost.PreAuthorize;
import org.springframework.security.access.prepost.PreFilter;
import org.springframework.security.config.annotation.method.configuration.EnableGlobalMethodSecurity;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;

@SpringBootApplication
@RestController
@EnableGlobalMethodSecurity(prePostEnabled = true) // 开启@PreAuthorize注解
public class SpringSecuritySystemApplication {

    public static void main(String[] args) {
        SpringApplication.run(SpringSecuritySystemApplication.class, args);
    }

    @GetMapping(value = "/")
    public String home() {
        return "Welcome to study springSecurity.";
    }

    @GetMapping(value = "/hello")
    public String hello() {
        return "hello boy";
    }

    @PreAuthorize("hasRole('ROLE_ADMIN')") // 设定权限校验：只用ADMIN角色才能调用该接口
    @GetMapping("/roleAuth")
    public String role() {
        return "admin role";
    }

    @PreAuthorize("hasRole('ROLE_ADMIN') or hasRole('ROLE_USER')") // ADMIN 和 USER 角色都有权限调用这个接口
    @GetMapping("/test01")
    public String rest01() {
        return "test01";
    }

    @PreAuthorize("#id < 10")
    @GetMapping("/test02/{id}")
    public String test02(@PathVariable("id") Integer id) {
        return "test02 -> 获取到的ID为：" + id;
    }

    @PreAuthorize("principal.username.equals(#username)")
    @GetMapping("/test03")
    public String test03(@RequestParam("username") String username) {
        return "test03 -> 获取到的username为：" + username;
    }
}

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　　6.2 @PostAuthorize

　　　　在执行方法之后进行权限验证

　　　　例如：@PostAuthorize("returnObject.equals('test04')")

　　　　　代码解释：判断方法的返回值是否等于 test04 ，如果是就通过验证，如果不是就验证失败

　　　　　　技巧：returnObject代表方法的返回对象

package cn.xiangxu.spring_security_system;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.security.access.prepost.PostAuthorize;
import org.springframework.security.access.prepost.PostFilter;
import org.springframework.security.access.prepost.PreAuthorize;
import org.springframework.security.access.prepost.PreFilter;
import org.springframework.security.config.annotation.method.configuration.EnableGlobalMethodSecurity;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;

@SpringBootApplication
@RestController
@EnableGlobalMethodSecurity(prePostEnabled = true) // 开启@PreAuthorize注解
public class SpringSecuritySystemApplication {

    public static void main(String[] args) {
        SpringApplication.run(SpringSecuritySystemApplication.class, args);
    }

    @GetMapping(value = "/")
    public String home() {
        return "Welcome to study springSecurity.";
    }

    @GetMapping(value = "/hello")
    public String hello() {
        return "hello boy";
    }

    @PreAuthorize("hasRole('ROLE_ADMIN')") // 设定权限校验：只用ADMIN角色才能调用该接口
    @GetMapping("/roleAuth")
    public String role() {
        return "admin role";
    }

    @PreAuthorize("hasRole('ROLE_ADMIN') or hasRole('ROLE_USER')") // ADMIN 和 USER 角色都有权限调用这个接口
    @GetMapping("/test01")
    public String rest01() {
        return "test01";
    }

    @PreAuthorize("#id < 10")
    @GetMapping("/test02/{id}")
    public String test02(@PathVariable("id") Integer id) {
        return "test02 -> 获取到的ID为：" + id;
    }

    @PreAuthorize("principal.username.equals(#username)")
    @GetMapping("/test03")
    public String test03(@RequestParam("username") String username) {
        return "test03 -> 获取到的username为：" + username;
    }

    @PostAuthorize("returnObject.equals('test04')")
    @GetMapping(value = "/test04")
    public String test04(@RequestParam("info") String info) {
        return info;
    }
}

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　　6.3 @PreFilter

　　　在方法执行前对列表型的参数进行一些验证

　　　　例如：@PreFilter("filterObject%2==0")

　　　　　　·代码解释：列表型的参数中的每个元素必须能被2整除

　　　　技巧：filterObject 代表列表型的参数

　　6.4 @PostFilter("filterObject%4 == 0")

　　　　在方法执行后对返回的列表型对象进行一些验证

　　　　例如：@PostFilter("filterObject%4 == 0")

　　　　　　代码解释：列表型的返回对象中的每个元素必须能被4整除

　　　　技巧：filterObject 代表列表型的返回对象