Spring-Security框架学习总结 前提:在做演示之前,我们先创建项目,并将项目导入IDE 测试项目是否运行成功,成功后进行正式开始学习 一.Case1:只要能登录即可 目标:我们在访问项目是访问index可以直接进入,不需要拦截,访问其他路径是需要进行登录验证,并且允许登录用户注销和使用表单进行登录,不拦截前台js,css,image等文件,我们在内存中设置了一个admin用户,可以进行登录 直接上代码(代码中会有注释): SecuDemoApplication:

package com.dhtt.security.SecuDemo;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

@SpringBootApplication
@RestController
@EnableAutoConfiguration
public class SecuDemoApplication {

	public static void main(String[] args) {
		SpringApplication.run(SecuDemoApplication.class, args);
	}
	
	@RequestMapping("/index")
	public String hello() {
		return "hello Spring boot....";
		
	}
	
	@RequestMapping("/home")
	public String home() {
		return "this my home....";
		
	}
}

SpringSecruityConfig:

package com.dhtt.security.SecuDemo;

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;

@Configuration
@EnableWebSecurity
public class SpringSecruityConfig extends WebSecurityConfigurerAdapter{
	
	/**
	 * HTTP请求拦截处理
	 */
	@Override
	protected void configure(HttpSecurity http) throws Exception {
		http.authorizeRequests()
		.antMatchers("/index").permitAll()  //主路径直接请求
		.anyRequest().authenticated()    //请他请求都要验证
		.and()
		.logout().permitAll()   //允许注销
		.and()
		.formLogin();  //允许表单登录
		http.csrf().disable();  //关闭csrf的认证
	}
	
	/**
	 * 处理前端文件,拦截忽略
	 */
	@Override
	public void configure(WebSecurity web) throws Exception {
		web.ignoring().antMatchers("/js/**","/css/**","/image/**");
	}

	/**
	 * 设置内存中的用户admin
	 */
	@Override
	protected void configure(AuthenticationManagerBuilder auth) throws Exception {
		auth.inMemoryAuthentication().withUser("admin").password("123456").roles("ADMIN");
	}
}

然后我们启动项目,在前台访问路径 (1)访问http://localhost:8080/index成功

(2)访问http://localhost:8080/home: 我们发现前台会为我们跳转到登录界面,接下来我们进行登录验证,我们发现登录界面没有跳转,证明登录失败,此时我们观察后台

发现后台报错 (3)报错问题解决:原因是spring boot的版本和Spring Security的版本问题,我们需要提供一个PasswordEncorder实例 MyPasswordEncoder:

package com.dhtt.security.SecuDemo;

import org.springframework.security.crypto.password.PasswordEncoder;

public class MyPasswordEncoder implements PasswordEncoder{

	@Override
	public String encode(CharSequence rawPassword) {
		return rawPassword.toString();
	}

	@Override
	public boolean matches(CharSequence rawPassword, String encodedPassword) {
		return encodedPassword.equals(rawPassword);
	}

}

SpringSecruityConfig中修改部分:

/**
	 * 设置内存中的用户admin
	 */
	@Override
	protected void configure(AuthenticationManagerBuilder auth) throws Exception {
		auth.inMemoryAuthentication().passwordEncoder(new MyPasswordEncoder())
		.withUser("admin").password("123456").roles("ADMIN");
	}

现在再次运行项目访问/home,我们发现登录成功,页面成功访问 Case2:有指定的角色,每个角色都有指定的权限 (1)目标:我们新增一个USER,对于ADMIN权限可以访问所有地址,但是user的权限规定其不能访问/roleAuth,代码: SpringSecruityConfig中修改部分:

/**
	 * 设置内存中的用户admin
	 */
	@Override
	protected void configure(AuthenticationManagerBuilder auth) throws Exception {
		auth.inMemoryAuthentication().passwordEncoder(new MyPasswordEncoder())
		.withUser("admin").password("haha1996").roles("ADMIN");
		auth.inMemoryAuthentication().passwordEncoder(new MyPasswordEncoder())
		.withUser("zhangsan").password("123456").roles("ADMIN");
		auth.inMemoryAuthentication().passwordEncoder(new MyPasswordEncoder())
		.withUser("username1").password("password").roles("USER");
	}

SecuDemoApplication:这里我们添加了新的注解

package com.dhtt.security.SecuDemo;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
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.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

@SpringBootApplication
@RestController
@EnableAutoConfiguration
@EnableGlobalMethodSecurity(prePostEnabled=true)
public class SecuDemoApplication {

	public static void main(String[] args) {
		SpringApplication.run(SecuDemoApplication.class, args);
	}
	
	@RequestMapping("/index")
	public String hello() {
		return "hello Spring boot....";
		
	}
	
	@RequestMapping("/home")
	public String home() {
		return "this my home....";
		
	}
	
	@RequestMapping("/roleAuth")
	@PreAuthorize("hasRole('ROLE_ADMIN')")
	public String role() {
		return "HELLO SPRING SECURITY....";
		
	}
}

经测试运行结果与我们的预期相同,我们使用admin进行登录,地址均可访问,当我们使用user进行登录时,我们发现/roleAuth路径访问失败,没有权限

								待续。。。