前言
上篇文章介绍了如何在Spring Boot引入Security
接下来,小编会简单的介绍下如何自定义登录配置
开始
首先,我们要有数据库的用户表,这里我用的是mysql5.6
表结构如下:
字段的话就不详细介绍了,相信看名字就能懂
整体demo结构如图:
在这里插入图片描述
虽然说是demo,但是本着严格务实的态度,也是遵守MVC的调用流程,所以包可能会有点繁琐
这里简单的说下这个登陆验证的流程,以便大家更好的理解下面的代码,先看图:
image.png绿色背景色为自定义实现的,也就是下面会出现的类方法
对于中间件那块来说是暂时没有的,可以不管先,后面的文章会引入,到时候再作介绍
当然,Spring Security认证的流程是没有那么简单的,这里只是给大家方便理解才简化了很多流程
下面开始展示代码
由于需要操作数据库,以及展示页面等,小编这里就需要引入持久层以及前端页面一些框架
这里小编用的是Spring Data Jpa,前端用的是Thymeleaf,Maven代码如下:
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-security</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-thymeleaf</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<!-- 阿里json框架 -->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>fastjson</artifactId>
<version>1.2.58</version>
</dependency>
</dependencies>
yml的配置不需要多大的修改,这次只是配置了数据源和jpa的一些基础属性,代码如下:
server:
tomcat:
uri-encoding: UTF-8
port: 8080
spring:
datasource:
driver-class-name: com.mysql.cj.jdbc.Driver
url: jdbc:mysql://127.0.0.1:3306/test?useUnicode=true&characterEncoding=UTF-8&serverTimezone=UTC
username: root
password: 940806
jpa:
database: MYSQL
show-sql: true
hibernate:
ddl-auto: update
database-platform: org.hibernate.dialect.MySQL5InnoDBDialect
这里要注意的是,当引入的mysql-connector-java版本是6.0以上的话,那驱动就是:
com.mysql.cj.jdbc.Driver
中间是多个cj的
还有就是在数据源url后面要加上serverTimezone=UTC这条参数,否则也是会报错的
jdbc:mysql://127.0.0.1:3306/test?useUnicode=true&characterEncoding=UTF-8&serverTimezone=UTC
接下来就是编写spring security的配置类:
SecurityConfig .java
package com.demo.ssdemo.config;
import com.demo.ssdemo.core.LoginValidateAuthenticationProvider;
import com.demo.ssdemo.core.handler.LoginFailureHandler;
import com.demo.ssdemo.core.handler.LoginSuccessHandler;
import com.demo.ssdemo.sys.service.UserService;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
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.crypto.bcrypt.BCryptPasswordEncoder;
import org.springframework.security.crypto.password.PasswordEncoder;
import javax.annotation.Resource;
@Configuration
@EnableWebSecurity
public class SecurityConfig extends WebSecurityConfigurerAdapter {
//自定义认证
@Resource
private LoginValidateAuthenticationProvider loginValidateAuthenticationProvider;
//登录成功handler
@Resource
private LoginSuccessHandler loginSuccessHandler;
//登录失败handler
@Resource
private LoginFailureHandler loginFailureHandler;
/**
* 权限核心配置
* @param http
* @throws Exception
*/
@Override
protected void configure(HttpSecurity http) throws Exception {
//基础设置
http.httpBasic()//配置HTTP基本身份验证
.and()
.authorizeRequests()
.anyRequest().authenticated()//所有请求都需要认证
.and()
.formLogin() //登录表单
.loginPage("/login")//登录页面url
.loginProcessingUrl("/login")//登录验证url
.defaultSuccessUrl("/index")//成功登录跳转
.successHandler(loginSuccessHandler)//成功登录处理器
.failureHandler(loginFailureHandler)//失败登录处理器
.permitAll();//登录成功后有权限访问所有页面
//关闭csrf跨域攻击防御
http.csrf().disable();
}
@Override
protected void configure(AuthenticationManagerBuilder auth) throws Exception {
//这里要设置自定义认证
auth.authenticationProvider(loginValidateAuthenticationProvider);
}
/**
* BCrypt加密
* @return
*/
@Bean
public PasswordEncoder passwordEncoder() {
return new BCryptPasswordEncoder();
}
}
注意,Spring Security配置类必须继承WebSecurityConfigurerAdapter类才会生效
这里BCrypt加密方式是官方推荐使用的,还有就是Spring Security5.x是不需要配置加密方式的,因为它可以匹配多种加密方式以用来解密,只需要在密码前面加上加密方式即可,格式如下:
{加密方式}密文
例如:
- {MD5}e10adc3949ba59abbe56e057f20f883e
- {bcrypt}10$bOZ5qFQS4OojeLUdb6K8.OU/KrVR8vzdo7QaCNKNG4oaIYUrAGKJ2
这样就可以实现兼容多个加密方式,可以说是挺人性化的,不过我这里还是规定死了哈哈哈哈
然后就是编写User实体类和UserService实现类:
User.java
package com.demo.ssdemo.sys.entity;
import org.springframework.security.core.GrantedAuthority;
import org.springframework.security.core.userdetails.UserDetails;
import javax.persistence.*;
import java.util.Collection;
@Entity
@Table(name = "sys_user")
public class User implements UserDetails {
//id
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
@Column
protected Integer id;
//用户名
@Column
private String username;
//密码
@Column(nullable = false)
private String password;
/**
* 是否锁定
* true: 未锁定
* false: 锁定
*/
@Column
private boolean lockedFlag;
//security存储权限认证用的
@Transient
private Collection<? extends GrantedAuthority> authorities;
@Override
public Collection<? extends GrantedAuthority> getAuthorities() {
return authorities;
}
@Override
public String getPassword() {
return password;
}
@Override
public String getUsername() {
return username;
}
/**
* 用户账号是否过期
* true: 未过期
* false: 已过期
* @return
*/
@Override
public boolean isAccountNonExpired() {
return true;
}
/**
* 用户账号是否被锁定
* true: 未锁定
* false: 锁定
* @return
*/
@Override
public boolean isAccountNonLocked() {
return lockedFlag;
}
/**
* 用户账号凭证(密码)是否过期
* 简单的说就是可能会因为修改了密码导致凭证过期这样的场景
* true: 过期
* false: 无效
* @return
*/
@Override
public boolean isCredentialsNonExpired() {
return true;
}
/**
* 用户账号是否被启用
* true: 启用
* false: 未启用
* @return
*/
@Override
public boolean isEnabled() {
return true;
}
...get、set方法省略...
}
这里要说明下,UserDetails是Spring Security提供的一个保存用户账号信息的接口,详情请看代码注释,因为有些地方是没有用到的,所以就写死了很多属性,大家可根据实际需求来修改使用
UserService.java
package com.demo.ssdemo.sys.service;
import com.demo.ssdemo.sys.entity.User;
import com.demo.ssdemo.sys.repository.UserRepository;
import org.springframework.security.core.userdetails.UserDetails;
import org.springframework.security.core.userdetails.UserDetailsService;
import org.springframework.security.core.userdetails.UsernameNotFoundException;
import org.springframework.stereotype.Service;
import javax.annotation.Resource;
@Service
public class UserService implements UserDetailsService {
@Resource
private UserRepository userRepository;
@Override
public UserDetails loadUserByUsername(String username) throws UsernameNotFoundException {
User user = userRepository.findUserByUsername(username);
if (user == null) {
throw new UsernameNotFoundException("不存在该用户!");
}
return user;
}
}
同理 UserDetailsService 也是是spring security提供的,这里实现了加载用户名称的方法,目的是为了获取用户信息,以便接下来的认证
UserRepository .java
package com.demo.ssdemo.sys.repository;
import com.demo.ssdemo.sys.entity.User;
import org.springframework.data.jpa.repository.JpaRepository;
import org.springframework.stereotype.Repository;
@Repository
public interface UserRepository extends JpaRepository<User, Integer> {
User findUserByUsername(String username);
}
这个相信不用多说了吧
下面就是自定义认证的核心代码:
LoginValidateAuthenticationProvider.java
package com.demo.ssdemo.core;
import com.demo.ssdemo.sys.entity.User;
import com.demo.ssdemo.sys.service.UserService;
import org.springframework.security.authentication.*;
import org.springframework.security.core.Authentication;
import org.springframework.security.core.AuthenticationException;
import org.springframework.security.crypto.password.PasswordEncoder;
import org.springframework.stereotype.Component;
import javax.annotation.Resource;
@Component
public class LoginValidateAuthenticationProvider implements AuthenticationProvider {
@Resource
private UserService userService;
//解密用的
@Resource
private PasswordEncoder passwordEncoder;
@Override
public Authentication authenticate(Authentication authentication) throws AuthenticationException {
//获取输入的用户名
String username = authentication.getName();
//获取输入的明文
String rawPassword = (String) authentication.getCredentials();
//查询用户是否存在
User user = (User) userService.loadUserByUsername(username);
if (!user.isEnabled()) {
throw new DisabledException("该账户已被禁用,请联系管理员");
} else if (!user.isAccountNonLocked()) {
throw new LockedException("该账号已被锁定");
} else if (!user.isAccountNonExpired()) {
throw new AccountExpiredException("该账号已过期,请联系管理员");
} else if (!user.isCredentialsNonExpired()) {
throw new CredentialsExpiredException("该账户的登录凭证已过期,请重新登录");
}
//验证密码
if (!passwordEncoder.matches(rawPassword, user.getPassword())) {
throw new BadCredentialsException("输入密码错误!");
}
return new UsernamePasswordAuthenticationToken(user, rawPassword, user.getAuthorities());
}
@Override
public boolean supports(Class<?> authentication) {
//确保authentication能转成该类
return authentication.equals(UsernamePasswordAuthenticationToken.class);
}
}
这里通过实现AuthenticationProvider 认证授权类,以达到自定义登录的效果,注意,这里是结合了之前实现的loadUserByUsername方法去获取用户信息,以及用户状态去判断登录是否能通过
接下来就是handler代码:
LoginSuccessHandler.java
package com.demo.ssdemo.core.handler;
import com.alibaba.fastjson.JSONObject;
import org.springframework.security.core.Authentication;
import org.springframework.security.web.authentication.SavedRequestAwareAuthenticationSuccessHandler;
import org.springframework.stereotype.Component;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.HashMap;
import java.util.Map;
/**
* 登陆成功处理handler
*/
@Component
public class LoginSuccessHandler extends SavedRequestAwareAuthenticationSuccessHandler {
@Override
public void onAuthenticationSuccess(HttpServletRequest request, HttpServletResponse response, Authentication authentication) throws ServletException, IOException {
//登录成功返回
Map<String, Object> paramMap = new HashMap<>();
paramMap.put("code", "400");
paramMap.put("message", "登录成功!");
//设置返回请求头
response.setContentType("application/json;charset=utf-8");
//写出流
PrintWriter out = response.getWriter();
out.write(JSONObject.toJSONString(paramMap));
out.flush();
out.close();
}
}
LoginFailureHandler.java
package com.demo.ssdemo.core.handler;
import com.alibaba.fastjson.JSONObject;
import org.springframework.security.core.AuthenticationException;
import org.springframework.security.web.authentication.SimpleUrlAuthenticationFailureHandler;
import org.springframework.stereotype.Component;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.HashMap;
import java.util.Map;
/**
* 登陆失败处理handler
**/
@Component
public class LoginFailureHandler extends SimpleUrlAuthenticationFailureHandler {
@Override
public void onAuthenticationFailure(HttpServletRequest request, HttpServletResponse response, AuthenticationException exception) throws IOException, ServletException {
//登录失败信息返回
Map<String, Object> paramMap = new HashMap<>();
paramMap.put("code", "500");
paramMap.put("message", exception.getMessage());
//设置返回请求头
response.setContentType("application/json;charset=utf-8");
//写出流
PrintWriter out = response.getWriter();
out.write(JSONObject.toJSONString(paramMap));
out.flush();
out.close();
}
}
那么到这里,也已经差不多了,现在还差的是登录的前端页面和一些效果
login.html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>登录页</title>
</head>
<body>
<h2>登录页</h2>
<form id="loginForm" action="/login" method="post">
用户名:<input type="text" id="username" name="username"><br/><br/>
密 码:<input type="password" id="password" name="password"><br/><br/>
<button id="loginBtn" type="button">登录</button>
</form>
<script src="http://libs.baidu.com/jquery/2.1.4/jquery.min.js"></script>
<script type="text/javascript">
$("#loginBtn").click(function () {
$.ajax({
type: "POST",
url: "/login",
data: $("#loginForm").serialize(),
dataType: "JSON",
success: function (data) {
console.log(data);
//window.location.href = "/index";
}
});
});
</script>
</body>
</html>
这里为了方便演示,就直接在前端输出登录信息,下面看看演示图:
image.png
这里我在数据库加了条登录数据,当填正确账号点击登录的时候,显示是成功的
image.png
随便输入个错误的密码则:
image.png
输入个不存在的用户名则:
image.png
那么基本代码和效果也演示完毕了
demo也已经放到github,获取方式在文章的Spring Boot2 + Spring Security5 系列搭建教程开头篇(1) 结尾处
如果小伙伴遇到什么问题,或者哪里不明白欢迎评论或私信,也可以在公众号里面私信问都可以,谢谢大家~
网友评论