Spring Security基础--快速上手实现认证会话拦截

Spirng-Security基础–基于SpringMVC的Session认证
在基于mvc认证的基础上修改

简介

SpringSecurity是一个能够为基于Spring的企业应用系统提供声明式的安全访问控制解决方案的安全框架。由于它是Spring生态系统中的一员，因此它伴随着整个Spring生态系统不断修正、升级，在springboot项目中加入springsecurity更是十分简单，使用SpringSecurity减少了为企业系统安全控制编写大量重复代码的工作。

创建工程

空的Maven工程，如下是已经搭建好的工程结构

首先配置spring、springmvc的配置

@Configuration
@ComponentScan(basePackages = "com.mcs.security",
         excludeFilters = {
    
    @ComponentScan.Filter(type = FilterType.ANNOTATION, value = Controller.class)})
public class ApplicationConfig {
    
    
}

@Configuration
@EnableWebMvc
@ComponentScan(basePackages = "com.mcs.security",
                        includeFilters = {
    
    @ComponentScan.Filter(type = FilterType.ANNOTATION, value = Controller.class)})
public class WebConfig implements WebMvcConfigurer {
    
    

    // 配置视图解析器

    public InternalResourceViewResolver viewResolver() {
    
    
        InternalResourceViewResolver internalResourceViewResolver = new InternalResourceViewResolver();
        internalResourceViewResolver.setPrefix("/WEB-INF/views/");
        internalResourceViewResolver.setSuffix(".jsp");
        return internalResourceViewResolver;
    }


    // 默认url根路径跳转到/login，此url为spring security提供
    @Override
    public void addViewControllers(ViewControllerRegistry registry) {
    
    
        registry.addViewController("/").setViewName("redirect:/login");
    }
}

public class SpringApplicationInitializer extends AbstractAnnotationConfigDispatcherServletInitializer {
    
    
    @Override
    protected Class<?>[] getRootConfigClasses() {
    
    
        return new Class[] {
    
     ApplicationConfig.class, WebSecurityConfig.class};
    }

    @Override
    protected Class<?>[] getServletConfigClasses() {
    
    
        return new Class[] {
    
     WebConfig.class };
    }

    @Override
    protected String[] getServletMappings() {
    
    
        return new String[] {
    
     "/" };
    }
}

在上次搭建springMVC配配置的基础上导入如下坐标
版本一定是5.1.4，否则会在登录跳转成功页面报错

<dependency>
            <groupId>org.springframework.security</groupId>
            <artifactId>spring-security-config</artifactId>
            <version>5.1.4.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.security</groupId>
            <artifactId>spring-security-web</artifactId>
            <version>5.1.4.RELEASE</version>
        </dependency>

初始化security

public class SpringSecurityApplicationInitializer extends AbstractSecurityWebApplicationInitializer {
    
    
    public SpringSecurityApplicationInitializer() {
    
    
        // 如果没有使用spring再加上这个
        //super(WebSecurityConfig.class);
    }
}

配置Security

@EnableWebSecurity
public class WebSecurityConfig extends WebSecurityConfigurerAdapter {
    
    
    // 配置用户信息服务
    @Bean
    public UserDetailsService userDetailsService() {
    
    
        InMemoryUserDetailsManager manager = new InMemoryUserDetailsManager();
        manager.createUser(User.withUsername("zhangsan").password("123").authorities("p1").build());
        manager.createUser(User.withUsername("lisi").password("123").authorities("p2").build());
        return manager;
    }
    // 密码编码器
    @Bean
    public PasswordEncoder passwordEncoder() {
    
    
        return NoOpPasswordEncoder.getInstance();
    }

    // 配置安全拦截机制
    @Override
    protected void configure(HttpSecurity http) throws Exception {
    
    
        http.authorizeRequests()
                .antMatchers("/r/r1").hasAuthority("p1")
                .antMatchers("/r/r2").hasAuthority("p2")
                .antMatchers("/r/**").authenticated() // 拦截/r/**请求
                .anyRequest().permitAll() // 其他请求正常方行
                .and()
                .formLogin().successForwardUrl("/login-success");
    }
}

controller配置

@RestController
public class loginController {
    
    

    @RequestMapping(value = "/login-success", produces = {
    
    "text/plain;charset=utf-8"})
    public String loginSuccess() {
    
    
        return "登录成功";
    }

    @RequestMapping(value = "/r/r1", produces = {
    
    "text/plain;charset=utf-8"})
    public String r1() {
    
    
        return "访问资源r1";
    }

    @RequestMapping(value = "/r/r2", produces = {
    
    "text/plain;charset=utf-8"})
    public String r2() {
    
    
        return "访问资源r2";
    }
}

总结

所以在原来我们使用springmvc的基础上，去掉了我们自定义的登录页面使用spring security自带的登录以及成功界面，将原来使用springmvc的拦截器进行处理改为使用security处理授权会话，简化了代码亿点点。