java根据用户名和密码生成secretKey java用户名密码验证

转载

mob6454cc623087 2024-06-21 19:43:23

title: Spring Security
date: 2019-08-05 16:40:27
categories:

后端
tags:
后端
权限管理

Spring Security

Spring Security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（简单说是对访问权限进行控制嘛）。它提供了一组可以在Spring应用上下文中配置的Bean，充分利用了Spring IoC，DI（控制反转Inversion of Control ,DI:Dependency Injection 依赖注入）和AOP（面向切面编程）功能，为应用系统提供声明式的安全访问控制功能，减少了为企业系统安全控制编写大量重复代码的工作。
核心：认证和授权
RBAC基于角色的访问控制
安全配置类，集成WebSecurityConfigurerAdapter

package com.waylau.spring.boot.blog.config;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.security.authentication.AuthenticationProvider;
import org.springframework.security.authentication.dao.DaoAuthenticationProvider;
import org.springframework.security.config.annotation.authentication.builders.AuthenticationManagerBuilder;
import org.springframework.security.config.annotation.method.configuration.EnableGlobalMethodSecurity;
import org.springframework.security.config.annotation.web.builders.HttpSecurity;
import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;
import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;
import org.springframework.security.core.userdetails.UserDetailsService;
import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
import org.springframework.security.crypto.password.PasswordEncoder;

/**
 * Spring Security 配置类.
 * 
 * @since 1.0.0 2017年3月8日
 * @author <a href="https://waylau.com">Way Lau</a>
 */
@EnableWebSecurity
@EnableGlobalMethodSecurity(prePostEnabled = true) // 启用方法安全设置
public class SecurityConfig extends WebSecurityConfigurerAdapter {
	
	private static final String KEY = "waylau.com";
	
	@Autowired
	private UserDetailsService userDetailsService;

	@Autowired
    private PasswordEncoder passwordEncoder;
	
	@Bean  
    public PasswordEncoder passwordEncoder() {  
        return new BCryptPasswordEncoder();   // 使用 BCrypt 加密
    }  
	
	@Bean  
    public AuthenticationProvider authenticationProvider() {  
		DaoAuthenticationProvider authenticationProvider = new DaoAuthenticationProvider();
		authenticationProvider.setUserDetailsService(userDetailsService);
		authenticationProvider.setPasswordEncoder(passwordEncoder); // 设置密码加密方式
        return authenticationProvider;  
    }  
 
	/**
	 * 自定义配置，设置访问路径，并且静止h2控制台的csrf防护
	 */
	@Override
	protected void configure(HttpSecurity http) throws Exception {
		http.authorizeRequests().antMatchers("/css/**", "/js/**", "/fonts/**", "/index").permitAll() // 都可以访问
				.antMatchers("/h2-console/**").permitAll() // 都可以访问
				.antMatchers("/admins/**").hasRole("ADMIN") // 需要相应的角色才能访问
				.and()
				.formLogin()   //基于 Form 表单登录验证
				.loginPage("/login").failureUrl("/login-error") // 自定义登录界面
				.and().rememberMe().key(KEY) // 启用 remember me
				.and().exceptionHandling().accessDeniedPage("/403");  // 处理异常，拒绝访问就重定向到 403 页面
		http.csrf().ignoringAntMatchers("/h2-console/**"); // 禁用 H2 控制台的 CSRF 防护
		http.headers().frameOptions().sameOrigin(); // 允许来自同一来源的H2 控制台的请求
	}

	/**
	 * 认证信息管理
	 * @param auth
	 * @throws Exception
	 */
	@Autowired
	public void configureGlobal(AuthenticationManagerBuilder auth) throws Exception {
		auth.userDetailsService(userDetailsService);
		auth.authenticationProvider(authenticationProvider());
	}
}

html代码示例

<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml"
      xmlns:th="http://www.thymeleaf.org"
      xmlns:sec="http://www.thymeleaf.org/thymeleaf-extras-springsecurity4">
<head>
</head>
<body>
	<div sec:authorize="isAuthenticated()">这里就是判断是否认证的样子
		<p>已登录</p>
		<p>登录名：<span sec:authentication="name"></span></p>
		<p>Password：<span sec:authentication="principal.password"></span></p>
		<div sec:authentication="principal.authorities"></div> <!-- works fine -->
		<p>Email ：<span sec:authentication="principal.email"></span></p>
		<p>Name：<span sec:authentication="principal.username"></span></p>
		<p>Status：<span sec:authentication="principal.status"></span></p>
		<p>拥有的角色：
			<span sec:authorize="hasRole('ROLE_ADMIN')">管理员</span>
			<span sec:authorize="hasRole('ROLE_USER')">用户</span>
		</p>
	</div>
	<div sec:authorize="isAnonymous"><p>未登录</p></div>
</body>
</html>

有一个问题需要注意，如果你是ADMIN，在数据库里面必须储存ROLE_ADMIN,其他云云。
同时，在security中，角色和权限共用GrantedAuthorty接口，唯一不同就是角色有个前缀ROLE_,

package org.springframework.security.core.authority;

import org.springframework.security.core.GrantedAuthority;
import org.springframework.util.Assert;

public final class SimpleGrantedAuthority implements GrantedAuthority {
    private static final long serialVersionUID = 500L;
    private final String role;

    public SimpleGrantedAuthority(String role) {
        Assert.hasText(role, "A granted authority textual representation is required");
        this.role = role;
    }

    public String getAuthority() {
        return this.role;
    }

    public boolean equals(Object obj) {
        if (this == obj) {
            return true;
        } else {
            return obj instanceof SimpleGrantedAuthority ? this.role.equals(((SimpleGrantedAuthority)obj).role) : false;
        }
    }

    public int hashCode() {
        return this.role.hashCode();
    }

    public String toString() {
        return this.role;
    }
}

实例操作，假如用户和权限分开

package com.waylau.spring.boot.blog.domain;

import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;

import org.springframework.security.core.GrantedAuthority;

/**
 * 权限.
 */
@Entity // 实体
public class Authority implements GrantedAuthority {

	private static final long serialVersionUID = 1L;

	@Id // 主键
	@GeneratedValue(strategy = GenerationType.IDENTITY) // 自增长策略
	private Long id; // 用户的唯一标识

	@Column(nullable = false) // 映射为字段，值不能为空
	private String name;

	public Long getId() {
		return id;
	}

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

	/*
	 * (non-Javadoc)
	 * 
	 * @see org.springframework.security.core.GrantedAuthority#getAuthority()
	 */
	@Override
	public String getAuthority() {
		return name;
	}

	public void setName(String name) {
		this.name = name;
	}
}
package com.waylau.spring.boot.blog.domain;

import java.io.Serializable;
import java.util.ArrayList;
import java.util.Collection;
import java.util.List;

import javax.persistence.CascadeType;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.FetchType;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.JoinColumn;
import javax.persistence.JoinTable;
import javax.persistence.ManyToMany;
import javax.validation.constraints.Size;

import org.hibernate.validator.constraints.Email;
import org.hibernate.validator.constraints.NotEmpty;
import org.springframework.security.core.GrantedAuthority;
import org.springframework.security.core.authority.SimpleGrantedAuthority;
import org.springframework.security.core.userdetails.UserDetails;
import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
import org.springframework.security.crypto.password.PasswordEncoder;

/**
 * User 实体
 * 
 * @since 1.0.0 2017年3月5日
 * @author <a href="https://waylau.com">Way Lau</a>
 */
@Entity // 实体
public class User implements UserDetails, Serializable {
//springsecurity要求的实现方法
	private static final long serialVersionUID = 1L;
	
	@Id // 主键
	@GeneratedValue(strategy = GenerationType.IDENTITY) // 自增长策略
	private Long id; // 用户的唯一标识

	@NotEmpty(message = "姓名不能为空")
	@Size(min=2, max=20)
	@Column(nullable = false, length = 20) // 映射为字段，值不能为空
	private String name;

	@NotEmpty(message = "邮箱不能为空")
	@Size(max=50)
	@Email(message= "邮箱格式不对" ) 
	@Column(nullable = false, length = 50, unique = true)
	private String email;

	@NotEmpty(message = "账号不能为空")
	@Size(min=3, max=20)
	@Column(nullable = false, length = 20, unique = true)
	private String username; // 用户账号，用户登录时的唯一标识

	@NotEmpty(message = "密码不能为空")
	@Size(max=100)
	@Column(length = 100)
	private String password; // 登录时密码
	
	@Column(length = 200)
	private String avatar; // 头像图片地址
//用户和权限的关系，必须把他们连接在一起
	@ManyToMany(cascade = CascadeType.DETACH, fetch = FetchType.EAGER)
	@JoinTable(name = "user_authority", joinColumns = @JoinColumn(name = "user_id", referencedColumnName = "id"), 
		inverseJoinColumns = @JoinColumn(name = "authority_id", referencedColumnName = "id"))
	private List<Authority> authorities;

	protected User() { // JPA 的规范要求无参构造函数；设为 protected 防止直接使用
	}

	public User(String name, String email,String username,String password) {
		this.name = name;
		this.email = email;
		this.username = username;
		this.password = password;
	}

	public Long getId() {
		return id;
	}

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

	public String getName() {
		return name;
	}

	public void setName(String name) {
		this.name = name;
	}

	public String getEmail() {
		return email;
	}

	public void setEmail(String email) {
		this.email = email;
	}
	//用户权限实现信息
	public Collection<? extends GrantedAuthority> getAuthorities() {
		//  需将 List<Authority> 转成 List<SimpleGrantedAuthority>，否则前端拿不到角色列表名称
		List<SimpleGrantedAuthority> simpleAuthorities = new ArrayList<>();
		for(GrantedAuthority authority : this.authorities){
			simpleAuthorities.add(new SimpleGrantedAuthority(authority.getAuthority()));
		}
		return simpleAuthorities;
	}

	public void setAuthorities(List<Authority> authorities) {
		this.authorities = authorities;
	}

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

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

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

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

	public void setEncodePassword(String password) {
		PasswordEncoder  encoder = new BCryptPasswordEncoder();
		String encodePasswd = encoder.encode(password);
		this.password = encodePasswd;
	}
	
	public String getAvatar() {
		return avatar;
	}

	public void setAvatar(String avatar) {
		this.avatar = avatar;
	}
//改成true方法，
	@Override
	public boolean isAccountNonExpired() {
		return true;
	}

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

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

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

	@Override
	public String toString() {
		return String.format("User[id=%d, username='%s', name='%s', email='%s', password='%s']", id, username, name, email,
				password);
	}
}
请看User实现了UserDetail方法里面有很多方法，有获得用户名和密码的方法，还有权限方法，所以推测UserDetails的实现类就是验证对的方式

详细原理
主要类，用来验证密码的类

public void configure(AuthenticationManagerBuilder auth) throws Exception {
			if (auth.isConfigured()) {
				return;
			}
			UserDetailsService userDetailsService = getBeanOrNull(
					UserDetailsService.class);
			if (userDetailsService == null) {
				return;
			}

			PasswordEncoder passwordEncoder = getBeanOrNull(PasswordEncoder.class);

			DaoAuthenticationProvider provider = new DaoAuthenticationProvider();
			provider.setUserDetailsService(userDetailsService);
			if (passwordEncoder != null) {
				provider.setPasswordEncoder(passwordEncoder);
			}

			auth.authenticationProvider(provider);
		}

config类示例

package com.waylau.spring.boot.blog.config;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.security.authentication.AuthenticationProvider;
import org.springframework.security.authentication.dao.DaoAuthenticationProvider;
import org.springframework.security.config.annotation.authentication.builders.AuthenticationManagerBuilder;
import org.springframework.security.config.annotation.method.configuration.EnableGlobalMethodSecurity;
import org.springframework.security.config.annotation.web.builders.HttpSecurity;
import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;
import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;
import org.springframework.security.core.userdetails.UserDetailsService;
import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
import org.springframework.security.crypto.password.PasswordEncoder;

/**
 * Spring Security 配置类.
 * 
 * @since 1.0.0 2017年3月8日
 * @author <a href="https://waylau.com">Way Lau</a>
 */
@EnableWebSecurity
@EnableGlobalMethodSecurity(prePostEnabled = true) // 启用方法安全设置
public class SecurityConfig extends WebSecurityConfigurerAdapter {
	
	private static final String KEY = "waylau.com";
	
	@Autowired
	private UserDetailsService userDetailsService;

	@Autowired
    private PasswordEncoder passwordEncoder;
	
	@Bean  
    public PasswordEncoder passwordEncoder() {  
        return new BCryptPasswordEncoder();   // 使用 BCrypt 加密
    }  
	
	@Bean  
    public AuthenticationProvider authenticationProvider() {  
		DaoAuthenticationProvider authenticationProvider = new DaoAuthenticationProvider();
		authenticationProvider.setUserDetailsService(userDetailsService);
		authenticationProvider.setPasswordEncoder(passwordEncoder); // 设置密码加密方式
        return authenticationProvider;  
    }  
 
	/**
	 * 自定义配置
	 */
	//实际上的登录表单提交按钮，最终提交的是在这个地方
	@Override
	protected void configure(HttpSecurity http) throws Exception {
		http.authorizeRequests().antMatchers("/css/**", "/js/**", "/fonts/**", "/index").permitAll() // 都可以访问
				.antMatchers("/h2-console/**").permitAll() // 都可以访问
				.antMatchers("/admins/**").hasRole("ADMIN") // 需要相应的角色才能访问
				.and()
				.formLogin()   //基于 Form 表单登录验证
				.loginPage("/login").failureUrl("/login-error") // 自定义登录界面，失败后重定向到这里
				.and().rememberMe().key(KEY) // 启用 remember me
				.and().exceptionHandling().accessDeniedPage("/403");  // 处理异常，拒绝访问就重定向到 403 页面
		http.csrf().ignoringAntMatchers("/h2-console/**"); // 禁用 H2 控制台的 CSRF 防护
		http.headers().frameOptions().sameOrigin(); // 允许来自同一来源的H2 控制台的请求
	}
	
	/**
	 * 认证信息管理
	 * @param auth
	 * @throws Exception
	 */
	@Autowired
	public void configureGlobal(AuthenticationManagerBuilder auth) throws Exception {
		auth.userDetailsService(userDetailsService);
		auth.authenticationProvider(authenticationProvider());
	}
}

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