SpringSecurity

简介

spring Security 是针对spring项目的安全框架，也是springBoot底层安全模块默认的技术选型，他可以实现强大的web安全控制，我们仅需要引入spring-boot-starter-security模块，进行少量的配置，即可实现强大的安全管理

记住几个类：

• WebSecurityConfigurerAdapter：自定义Security策略
• AuthenticationManagerBuilder: 自定义认证策略
• @EnableWebSecurity: 开启WebSecurity模式

导入security

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

controller层

package com.google.controller;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.CrossOrigin;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;

@CrossOrigin(origins = "http://localhost:8081",maxAge = 3600)//解决跨域问题
@Controller
public class SecurityController {
    @RequestMapping("/")
    public String usertext() {
        String username = "罗";
        return "redirect:http://localhost:8081/";
    }
    @RequestMapping("/{level}/{id}")
    @ResponseBody
    public String level(@PathVariable String level , @PathVariable int id) {
        String username = level+"/"+id+"页面";
        return username;
    }
}

认证

 //认证
    @Override //重写configure(HttpSecurity http)方法，它是链式编程
    protected void configure(HttpSecurity http) throws Exception {
        http.authorizeRequests()
                //这里的根地址都是http://localhost:8080/
                .antMatchers(" /").permitAll()
                .antMatchers("/level1/**").hasRole("vip1")
                .antMatchers("/level2/**").hasRole("vip2")
                .antMatchers("/level3/**").hasRole("vip3");

        //没有权限，默认跳入登录页面
        http.formLogin();
    }

用户授权

@Override
    protected void configure(AuthenticationManagerBuilder auth) throws Exception {
        auth.inMemoryAuthentication().passwordEncoder(new BCryptPasswordEncoder())
                .withUser("root").password(new BCryptPasswordEncoder().encode("123")).roles("vip1","vip2","vip3")
                .and()
                .withUser("xiao").password(new BCryptPasswordEncoder().encode("123")).roles("vip1","vip2");
    }