关于java:springboot-整合Spring-Security

创立我的项目

生成我的项目模板

为不便咱们初始化我的项目，Spring Boot 给咱们提供一个我的项目模板生成网站。

1.  关上浏览器，拜访：https://start.spring.io/

2.  依据页面提醒，抉择构建工具，开发语言，我的项目信息等。
 
3. 点击 Generate，生成我的项目模板，生成之后会将压缩包下载到本地。
4. 解压 demo.zip 文件，而后 idea 导入 pom.xml 文件，我的项目构造如下：

增加相干依赖

增加 Maven 相干依赖，这里须要增加上 web、swagger、spring security、jwt 和 fastjson 的依赖，Swagge 和 fastjson 的增加是为了不便接口测试。

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
 <modelVersion>4.0.0</modelVersion>
 <parent> <groupId>org.springframework.boot</groupId>
 <artifactId>spring-boot-starter-parent</artifactId>
 <version>2.4.0</version>
 <relativePath/> <!-- lookup parent from repository -->
 </parent>
 <groupId>com.spring.security</groupId>
 <artifactId>demo</artifactId>
 <version>0.0.1-SNAPSHOT</version>
 <name>demo</name>
 <description>Demo project for Spring Boot</description>
 <properties> <java.version>1.8</java.version>
 </properties>
 <dependencies> <!-- web -->
 <dependency>
 <groupId>org.springframework.boot</groupId>
 <artifactId>spring-boot-starter-web</artifactId>
 </dependency>
 <dependency> <groupId>org.springframework.boot</groupId>
 <artifactId>spring-boot-starter-test</artifactId>
 <scope>test</scope>
 </dependency>
 <!-- swagger -->
 <dependency>
 <groupId>io.springfox</groupId>
 <artifactId>springfox-swagger2</artifactId>
 <version>2.9.2</version>
 </dependency> <dependency> <groupId>io.springfox</groupId>
 <artifactId>springfox-swagger-ui</artifactId>
 <version>2.9.2</version>
 </dependency> <!-- spring security -->
 <dependency>
 <groupId>org.springframework.boot</groupId>
 <artifactId>spring-boot-starter-security</artifactId>
 </dependency> <!-- jwt -->
 <dependency>
 <groupId>io.jsonwebtoken</groupId>
 <artifactId>jjwt</artifactId>
 <version>0.9.1</version>
 </dependency> <!-- fastjson -->
 <dependency>
 <groupId>com.alibaba</groupId>
 <artifactId>fastjson</artifactId>
 <version>1.2.58</version>
 </dependency> <!-- 集成 lombok 框架 -->
 <dependency>
 <groupId>org.projectlombok</groupId>
 <artifactId>lombok</artifactId>
 <optional>true</optional>
 </dependency> </dependencies>
 <build> <plugins> <plugin> <groupId>org.springframework.boot</groupId>
 <artifactId>spring-boot-maven-plugin</artifactId>
 </plugin> </plugins> <!-- 打包时拷贝 MyBatis 的映射文件 -->
 <resources>
 <resource> <directory>src/main/java</directory>
 <includes> <include>**/sqlmap/*.xml</include>
 </includes> <filtering>false</filtering>
 </resource> <resource> <directory>src/main/resources</directory>
 <includes> <include>**/*.*</include>
 </includes> <filtering>true</filtering>
 </resource> </resources> </build>
</project>

增加相干配置

• 增加 swagger 配置

增加一个 swagger 配置类，在工程下新建 config 包并增加一个 SwaggerConfig 配置类，除了惯例配置外，加了一个令牌属性，能够在接口调用的时候传递令牌。
SwaggerConfig.java

package com.spring.security.demo.config;
import java.util.ArrayList;
import java.util.List;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import springfox.documentation.builders.ApiInfoBuilder;
import springfox.documentation.builders.ParameterBuilder;
import springfox.documentation.builders.PathSelectors;
import springfox.documentation.builders.RequestHandlerSelectors;
import springfox.documentation.schema.ModelRef;
import springfox.documentation.service.ApiInfo;
import springfox.documentation.service.Parameter;
import springfox.documentation.spi.DocumentationType;
import springfox.documentation.spring.web.plugins.Docket;
import springfox.documentation.swagger2.annotations.EnableSwagger2;
/**
 * @Author wulongbo
 * @Date 2020/11/21 11:50
 * @Version 1.0
 */@Configuration
@EnableSwagger2
public class SwaggerConfig {
    @Bean
 public Docket createRestApi(){
        // 增加申请参数，咱们这里把 token 作为申请头部参数传入后端
 ParameterBuilder parameterBuilder = new ParameterBuilder();
 List<Parameter> parameters = new ArrayList<Parameter>();
 parameterBuilder.name("Authorization").description("令牌").modelRef(new ModelRef("string")).parameterType("header")
                .required(false).build();
 parameters.add(parameterBuilder.build());
 return new Docket(DocumentationType.SWAGGER_2).apiInfo(apiInfo()).select().apis(RequestHandlerSelectors.any())
                .paths(PathSelectors.any()).build().globalOperationParameters(parameters);
 }
    private ApiInfo apiInfo(){return new ApiInfoBuilder()
                .title("SpringBoot API Doc")
                .description("This is a restful api document of Spring Boot.")
                .version("1.0")
                .build();}
}

• 增加跨域 配置

增加一个 CORS 跨域配置类，在工程下新建 config 包并增加一个 CorsConfig 配置类。
CorsConfig.java

package com.spring.security.demo.config;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.config.annotation.CorsRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
/**
 * @Author wulongbo
 * @Date 2020/11/21 11:52
 * @Version 1.0
 */@Configuration
public class CorsConfig implements WebMvcConfigurer {
        @Override
 public void addCorsMappings(CorsRegistry registry) {registry.addMapping("/**")    // 容许跨域拜访的门路
 .allowedOrigins("*")    // 容许跨域拜访的源
 .allowedMethods("POST", "GET", "PUT", "OPTIONS", "DELETE")    // 容许申请办法
 .maxAge(168000)    // 预检间隔时间
 .allowedHeaders("*")  // 容许头部设置
 .allowCredentials(true); // 是否发送 cookie
 }
}

• 平安配置类

上面这个配置类是 Spring Security 的要害配置。

在这个配置类中，咱们次要做了以下几个配置：

1. 拜访门路 URL 的受权策略，如登录、Swagger 拜访免登录认证等
2. 指定了登录认证流程过滤器 JwtLoginFilter，由它来触发登录认证
3. 指定了自定义身份认证组件 JwtAuthenticationProvider，并注入 UserDetailsService
4. 指定了访问控制过滤器 JwtAuthenticationFilter，在受权时解析令牌和设置登录状态
5. 指定了退出登录处理器，因为是前后端拆散，避免内置的登录处理器在后盾进行跳转

WebSecurityConfig.java

package com.spring.security.demo.config;
import com.spring.security.demo.security.JwtAuthenticationFilter;
import com.spring.security.demo.security.JwtAuthenticationProvider;
import com.spring.security.demo.security.JwtLoginFilter;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.HttpMethod;
import org.springframework.security.authentication.AuthenticationManager;
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.web.authentication.UsernamePasswordAuthenticationFilter;
import org.springframework.security.web.authentication.logout.HttpStatusReturningLogoutSuccessHandler;
@Configuration
@EnableWebSecurity
@EnableGlobalMethodSecurity(prePostEnabled = true)
public class WebSecurityConfig extends WebSecurityConfigurerAdapter {
    @Autowired
 private UserDetailsService userDetailsService;
 @Override
 public void configure(AuthenticationManagerBuilder auth) throws Exception {// 应用自定义登录身份认证组件 ----> 指定了自定义身份认证组件 JwtAuthenticationProvider，并注入 UserDetailsService auth.authenticationProvider(new JwtAuthenticationProvider(userDetailsService));
 }
    @Override
 protected void configure(HttpSecurity http) throws Exception {
        // 禁用 csrf, 因为应用的是 JWT，咱们这里不须要 csrf
 http.cors().and().csrf().disable()
            .authorizeRequests()
            // 跨域预检申请
 .antMatchers(HttpMethod.OPTIONS, "/**").permitAll()
            // 登录 URL
 .antMatchers("/login").permitAll()
            // swagger
 .antMatchers("/swagger**/**").permitAll()
            .antMatchers("/webjars/**").permitAll()
            .antMatchers("/v2/**").permitAll()
            // 其余所有申请须要身份认证
 .anyRequest().authenticated();
 // 退出登录处理器
 http.logout().logoutSuccessHandler(new HttpStatusReturningLogoutSuccessHandler());
 // 开启登录认证流程过滤器 ----> 指定了登录认证流程过滤器 JwtLoginFilter，由它来触发登录认证
 http.addFilterBefore(new JwtLoginFilter(authenticationManager()), UsernamePasswordAuthenticationFilter.class);
 // 访问控制时登录状态查看过滤器 ----> 指定了访问控制过滤器 JwtAuthenticationFilter，在受权时解析令牌和设置登录状态
 http.addFilterBefore(new JwtAuthenticationFilter(authenticationManager()), UsernamePasswordAuthenticationFilter.class);
 }
    @Bean
 @Override public AuthenticationManager authenticationManager() throws Exception {return super.authenticationManager();
 }
    
}

登录认证触发过滤器

JwtLoginFilter 是在通过拜访 /login 的 POST 申请是被首先被触发的过滤器，默认实现是 UsernamePasswordAuthenticationFilter，它继承了 AbstractAuthenticationProcessingFilter，形象父类的 doFilter 定义了登录认证的大抵操作流程，这里咱们的 JwtLoginFilter 继承了 UsernamePasswordAuthenticationFilter，并进行了两个次要内容的定制。

1. 覆写认证办法，批改用户名、明码的获取形式，具体起因看代码正文
2. 覆写认证胜利后的操作，移除后盾跳转，增加生成令牌并返回给客户端

JwtLoginFilter.java

package com.spring.security.demo.security;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.nio.charset.Charset;
import javax.servlet.FilterChain;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import com.spring.security.demo.utils.HttpUtils;
import com.spring.security.demo.utils.JwtTokenUtils;
import org.springframework.security.authentication.AuthenticationManager;
import org.springframework.security.authentication.event.InteractiveAuthenticationSuccessEvent;
import org.springframework.security.core.Authentication;
import org.springframework.security.core.AuthenticationException;
import org.springframework.security.core.context.SecurityContextHolder;
import org.springframework.security.web.authentication.UsernamePasswordAuthenticationFilter;
import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;
/**
 * 启动登录认证流程过滤器
 * @author Wulongbo
 * @date Nov 28, 2020
 */public class JwtLoginFilter extends UsernamePasswordAuthenticationFilter {public JwtLoginFilter(AuthenticationManager authManager) {setAuthenticationManager(authManager);
 }
   
   @Override
 public void doFilter(ServletRequest req, ServletResponse res, FilterChain chain)
         throws IOException, ServletException {
      // POST 申请 /login 登录时拦挡，由此办法触发执行登录认证流程，能够在此覆写整个登录认证逻辑
 super.doFilter(req, res, chain); 
}
   
   @Override
 public Authentication attemptAuthentication(HttpServletRequest request, HttpServletResponse response) throws AuthenticationException {
      // 能够在此覆写尝试进行登录认证的逻辑，登录胜利之后等操作不再此办法内
 // 如果应用此过滤器来触发登录认证流程，留神登录申请数据格式的问题
 // 此过滤器的用户名明码默认从 request.getParameter() 获取，然而这种
 // 读取形式不能读取到如 application/json 等 post 申请数据，须要把
 // 用户名明码的读取逻辑批改为到流中读取 request.getInputStream()
 String body = getBody(request);
 JSONObject jsonObject = JSON.parseObject(body);
 String username = jsonObject.getString("username");
 String password = jsonObject.getString("password");
 if (username == null) {username = "";}
      if (password == null) {password = "";}
      username = username.trim();
 JwtAuthenticatioToken authRequest = new JwtAuthenticatioToken(username, password);
 // Allow subclasses to set the "details" property
 setDetails(request, authRequest);
 return this.getAuthenticationManager().authenticate(authRequest);
 }
   
   @Override
 protected void successfulAuthentication(HttpServletRequest request, HttpServletResponse response, FilterChain chain,
 Authentication authResult) throws IOException, ServletException {
      // 存储登录认证信息到上下文
 SecurityContextHolder.getContext().setAuthentication(authResult);
 // 记住我服务
 getRememberMeServices().loginSuccess(request, response, authResult);
 // 触发事件监听器
 if (this.eventPublisher != null) {eventPublisher.publishEvent(new InteractiveAuthenticationSuccessEvent(authResult, this.getClass()));
 }
      // 生成并返回 token 给客户端，后续拜访携带此 token
 JwtAuthenticatioToken token = new JwtAuthenticatioToken(null, null, JwtTokenUtils.generateToken(authResult));
 HttpUtils.write(response, token);
 }
   
   /** 
 * 获取申请 Body
 * @param request
 * @return
 */
 public String getBody(HttpServletRequest request) {StringBuilder sb = new StringBuilder();
 InputStream inputStream = null;
 BufferedReader reader = null;
 try {inputStream = request.getInputStream();
 reader = new BufferedReader(new InputStreamReader(inputStream, Charset.forName("UTF-8")));
 String line = "";
 while ((line = reader.readLine()) != null) {sb.append(line);
 }
      } catch (IOException e) {e.printStackTrace();
 } finally {if (inputStream != null) {
            try {inputStream.close();
 } catch (IOException e) {e.printStackTrace();
 }
         }
         if (reader != null) {
            try {reader.close();
 } catch (IOException e) {e.printStackTrace();
 }
         }
      }
      return sb.toString();}
}

登录控制器

除了应用下面的登录认证过滤器拦挡 /login Post 申请之外，咱们也能够不应用下面的过滤器，通过自定义登录接口实现，只有在登录接口手动触发登录流程并生产令牌即可。

其实 Spring Security 的登录认证过程只需调用 AuthenticationManager 的 authenticate(Authentication authentication) 办法，最终返回认证胜利的 Authentication 实现类并存储到 SpringContexHolder 上下文即可，这样前面受权的时候就能够从 SpringContexHolder 中获取登录认证信息，并依据其中的用户信息和权限信息决定是否进行受权。
LoginController.java

package com.spring.security.demo.controller;
import com.spring.security.demo.security.JwtAuthenticatioToken;
import com.spring.security.demo.utils.SecurityUtils;
import com.spring.security.demo.vo.HttpResult;
import com.spring.security.demo.vo.LoginBean;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.security.authentication.AuthenticationManager;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestBody;
import javax.servlet.http.HttpServletRequest;
import java.io.IOException;
/**
 * @Author wulongbo
 * @Date 2020/11/24 10:05
 * @Version 1.0
 */
 @RestController
 public class LoginController {
    @Autowired
 private AuthenticationManager authenticationManager;
 /**
 * 登录接口
 */
 @PostMapping(value = "/login")
    public HttpResult login(@RequestBody LoginBean loginBean, HttpServletRequest request) throws IOException {String username = loginBean.getUsername();
 String password = loginBean.getPassword();
 // 零碎登录认证
 JwtAuthenticatioToken token = SecurityUtils.login(request, username, password, authenticationManager);
 return HttpResult.ok(token);
 }
}

如下是登录认证的逻辑，能够看到局部逻辑跟下面的登录认证过滤器差不多。

1. 执行登录认证过程，通过调用 AuthenticationManager 的 authenticate(token) 办法实现
2. 将认证胜利的认证信息存储到上下文，供后续拜访受权的时候获取应用
3. 通过 JWT 生成令牌并返回给客户端，后续拜访和操作都须要携带此令牌

无关登录过程的逻辑，参见 SecurityUtils 的 login 办法。

SecurityUtils.java

package com.spring.security.demo.utils;
import javax.servlet.http.HttpServletRequest;
import com.spring.security.demo.security.JwtAuthenticatioToken;
import org.springframework.security.authentication.AuthenticationManager;
import org.springframework.security.core.Authentication;
import org.springframework.security.core.context.SecurityContextHolder;
import org.springframework.security.core.userdetails.UserDetails;
import org.springframework.security.web.authentication.WebAuthenticationDetailsSource;
/**
 * Security 相干操作
 * @author Wulongbo
 * @date Jun 29, 2020
 */public class SecurityUtils {
   /**
 * 零碎登录认证
 * @param request
 * @param username
 * @param password
 * @param authenticationManager
 * @return
 */
 public static JwtAuthenticatioToken login(HttpServletRequest request, String username, String password, AuthenticationManager authenticationManager) {JwtAuthenticatioToken token = new JwtAuthenticatioToken(username, password);
 token.setDetails(new WebAuthenticationDetailsSource().buildDetails(request));
 // 执行登录认证过程
 Authentication authentication = authenticationManager.authenticate(token);
 // 认证胜利存储认证信息到上下文
 SecurityContextHolder.getContext().setAuthentication(authentication);
 // 生成令牌并返回给客户端
 token.setToken(JwtTokenUtils.generateToken(authentication));
 return token;
 }
   /**
 * 获取令牌进行认证
 * @param request
 */
 public static void checkAuthentication(HttpServletRequest request) {
      // 获取令牌并依据令牌获取登录认证信息
 Authentication authentication = JwtTokenUtils.getAuthenticationeFromToken(request);
 // 设置登录认证信息到上下文
 SecurityContextHolder.getContext().setAuthentication(authentication);
 }
   /**
 * 获取以后用户名
 * @return
 */
 public static String getUsername() {
      String username = null;
 Authentication authentication = getAuthentication();
 if(authentication != null) {Object principal = authentication.getPrincipal();
 if(principal != null && principal instanceof UserDetails) {username = ((UserDetails) principal).getUsername();}
      }
      return username;
 }
   
   /**
 * 获取用户名
 * @return
 */
 public static String getUsername(Authentication authentication) {
      String username = null;
 if(authentication != null) {Object principal = authentication.getPrincipal();
 if(principal != null && principal instanceof UserDetails) {username = ((UserDetails) principal).getUsername();}
      }
      return username;
 }
   
   /**
 * 获取以后登录信息
 * @return
 */
 public static Authentication getAuthentication() {if(SecurityContextHolder.getContext() == null) {return null;}
      Authentication authentication = SecurityContextHolder.getContext().getAuthentication();
 return authentication;
 }
   
}

令牌生成器

咱们令牌是应用 JWT 生成的，令牌生成的逻辑，参见源码 JwtTokenUtils 的 generateToken 相干办法。

JwtTokenUtils.java

package com.spring.security.demo.utils;
import java.io.Serializable;
import java.util.ArrayList;
import java.util.Date;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import javax.servlet.http.HttpServletRequest;
import com.spring.security.demo.security.GrantedAuthorityImpl;
import com.spring.security.demo.security.JwtAuthenticatioToken;
import org.springframework.security.core.Authentication;
import org.springframework.security.core.GrantedAuthority;
import io.jsonwebtoken.Claims;
import io.jsonwebtoken.Jwts;
import io.jsonwebtoken.SignatureAlgorithm;
/**
 * JWT 工具类
 * @author Wulongbo
 * @date Jun 29, 2020
 */public class JwtTokenUtils implements Serializable {
   private static final long serialVersionUID = 1L;
 /**
 * 用户名称
 */
 private static final String USERNAME = Claims.SUBJECT;
 /**
 * 创立工夫
 */
 private static final String CREATED = "created";
 /**
 * 权限列表
 */
 private static final String AUTHORITIES = "authorities";
 /**
 * 密钥
 */
 private static final String SECRET = "abcdefgh";
 /**
 * 有效期 12 小时
 */
 private static final long EXPIRE_TIME = 12 * 60 * 60 * 1000;
 /**
 * 生成令牌
 *
 * @param authentication 用户
 * @return 令牌
 */
 public static String generateToken(Authentication authentication) {Map<String, Object> claims = new HashMap<>(3);
 claims.put(USERNAME, SecurityUtils.getUsername(authentication));
 claims.put(CREATED, new Date());
 claims.put(AUTHORITIES, authentication.getAuthorities());
 return generateToken(claims);
 }
   /**
 * 从数据申明生成令牌
 *
 * @param claims 数据申明
 * @return 令牌
 */
 private static String generateToken(Map<String, Object> claims) {Date expirationDate = new Date(System.currentTimeMillis() + EXPIRE_TIME);
 return Jwts.builder().setClaims(claims).setExpiration(expirationDate).signWith(SignatureAlgorithm.HS512, SECRET).compact();}
    /**
 * 从令牌中获取用户名
 *
 * @param token 令牌
 * @return 用户名
 */
 public static String getUsernameFromToken(String token) {
       String username;
 try {Claims claims = getClaimsFromToken(token);
 username = claims.getSubject();} catch (Exception e) {username = null;}
       return username;
 }
   
   /**
 * 依据申请令牌获取登录认证信息
 * @param token 令牌
 * @return 用户名
 */
 public static Authentication getAuthenticationeFromToken(HttpServletRequest request) {
      Authentication authentication = null;
 // 获取申请携带的令牌
 String token = JwtTokenUtils.getToken(request);
 if(token != null) {
         // 申请令牌不能为空
 if(SecurityUtils.getAuthentication() == null) {
            // 上下文中 Authentication 为空
 Claims claims = getClaimsFromToken(token);
 if(claims == null) {return null;}
            String username = claims.getSubject();
 if(username == null) {return null;}
            if(isTokenExpired(token)) {return null;}
            Object authors = claims.get(AUTHORITIES);
 List<GrantedAuthority> authorities = new ArrayList<GrantedAuthority>();
 if (authors != null && authors instanceof List) {for (Object object : (List) authors) {authorities.add(new GrantedAuthorityImpl((String) ((Map) object).get("authority")));
 }
            }
            authentication = new JwtAuthenticatioToken(username, null, authorities, token);
 } else {if(validateToken(token, SecurityUtils.getUsername())) {
               // 如果上下文中 Authentication 非空，且申请令牌非法，间接返回以后登录认证信息
 authentication = SecurityUtils.getAuthentication();}
         }
      }
      return authentication;
 }
   /**
 * 从令牌中获取数据申明
 *
 * @param token 令牌
 * @return 数据申明
 */
 private static Claims getClaimsFromToken(String token) {
        Claims claims;
 try {claims = Jwts.parser().setSigningKey(SECRET).parseClaimsJws(token).getBody();} catch (Exception e) {claims = null;}
        return claims;
 }
    /**
 * 验证令牌
 * @param token
 * @param username
 * @return
 */
 public static Boolean validateToken(String token, String username) {String userName = getUsernameFromToken(token);
 return (userName.equals(username) && !isTokenExpired(token));
 }
   /**
 * 刷新令牌
 * @param token
 * @return
 */
 public static String refreshToken(String token) {
       String refreshedToken;
 try {Claims claims = getClaimsFromToken(token);
 claims.put(CREATED, new Date());
 refreshedToken = generateToken(claims);
 } catch (Exception e) {refreshedToken = null;}
       return refreshedToken;
 }
   /**
 * 判断令牌是否过期
 *
 * @param token 令牌
 * @return 是否过期
 */
 public static Boolean isTokenExpired(String token) {
        try {Claims claims = getClaimsFromToken(token);
 Date expiration = claims.getExpiration();
 return expiration.before(new Date());
 } catch (Exception e) {return false;}
    }
    /**
 * 获取申请 token
 * @param request
 * @return
 */
 public static String getToken(HttpServletRequest request) {String token = request.getHeader("Authorization");
 String tokenHead = "Bearer";
 if(token == null) {token = request.getHeader("token");
 } else if(token.contains(tokenHead)){token = token.substring(tokenHead.length());
 } 
        if("".equals(token)) {token = null;}
        return token;
 }
}

登录身份认证组件

下面说到登录认证是通过调用 AuthenticationManager 的 authenticate(token) 办法实现的，而 AuthenticationManager 又是通过调用 AuthenticationProvider 的 authenticate(Authentication authentication) 来实现认证的，所以通过定制 AuthenticationProvider 也能够实现各种自定义的需要，咱们这里只是简略的继承 DaoAuthenticationProvider 展现如何自定义，具体的大家能够依据各自的需要按需定制。

JwtAuthenticationProvider.java

package com.spring.security.demo.security;
import org.springframework.security.authentication.UsernamePasswordAuthenticationToken;
import org.springframework.security.authentication.dao.DaoAuthenticationProvider;
import org.springframework.security.core.Authentication;
import org.springframework.security.core.AuthenticationException;
import org.springframework.security.core.userdetails.UserDetails;
import org.springframework.security.core.userdetails.UserDetailsService;
import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
/**
 * 身份验证提供者
 * @author Wulongbo
 * @date Nov 20, 2020
 */public class JwtAuthenticationProvider extends DaoAuthenticationProvider {public JwtAuthenticationProvider(UserDetailsService userDetailsService) {setUserDetailsService(userDetailsService);
 setPasswordEncoder(new BCryptPasswordEncoder());
 }
    @Override
 public Authentication authenticate(Authentication authentication) throws AuthenticationException {
       // 能够在此处覆写整个登录认证逻辑
 return super.authenticate(authentication);
 }
    
    @Override
 protected void additionalAuthenticationChecks(UserDetails userDetails, UsernamePasswordAuthenticationToken authentication)
         throws AuthenticationException {
       // 能够在此处覆写明码验证逻辑
 super.additionalAuthenticationChecks(userDetails, authentication);
 }
}

咱们自定义的 UserDetailsService，从咱们的用户服务 UserService 中获取用户和权限信息。

UserDetailsServiceImpl.java

package com.spring.security.demo.security;
import java.util.List;
import java.util.Set;
import java.util.stream.Collectors;
import com.spring.security.demo.model.User;
import com.spring.security.demo.service.UserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.security.core.GrantedAuthority;
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;
/**
 * 用户登录认证信息查问
 * @author Wulongbo
 * @date Jun 29, 2020
 */@Service
public class UserDetailsServiceImpl implements UserDetailsService {
    @Autowired
 private UserService userService;
 @Override
 public UserDetails loadUserByUsername(String username) throws UsernameNotFoundException {User user = userService.findByUsername(username);
 if (user == null) {throw new UsernameNotFoundException("该用户不存在");
 }
        // 用户权限列表，依据用户领有的权限标识与如 @PreAuthorize("hasAuthority('sys:menu:view')") 标注的接口比照，决定是否能够调用接口
 Set<String> permissions = userService.findPermissions(username);
 List<GrantedAuthority> grantedAuthorities = permissions.stream().map(GrantedAuthorityImpl::new).collect(Collectors.toList());
 return new JwtUserDetails(username, user.getPassword(), grantedAuthorities);
 }
}

用户认证信息

下面 UserDetailsService 加载好用户认证信息后会封装认证信息到一个 UserDetails 的实现类。

默认实现是 User 类，咱们这里没有非凡须要，简略继承即可，简单需要能够在此基础上进行拓展。

JwtUserDetails.java

package com.spring.security.demo.security;
import java.util.Collection;
import org.springframework.security.core.GrantedAuthority;
import org.springframework.security.core.userdetails.User;
/**
 * 平安用户模型
 * @author Wulongbo
 * @date Jun 29, 2020
 */public class JwtUserDetails extends User {
   private static final long serialVersionUID = 1L;
 public JwtUserDetails(String username, String password, Collection<? extends GrantedAuthority> authorities) {this(username, password, true, true, true, true, authorities);
 }
   
   public JwtUserDetails(String username, String password, boolean enabled, boolean accountNonExpired,
 boolean credentialsNonExpired, boolean accountNonLocked, Collection<? extends GrantedAuthority> authorities) {super(username, password, enabled, accountNonExpired, credentialsNonExpired, accountNonLocked, authorities);
 }
}

用户操作代码

简略的用户模型，蕴含用户名明码。

User.java

package com.spring.security.demo.model;
import lombok.Data;
/**
 * 用户模型
 * @author Wulongbo
 * @date Jun 29, 2020
 */@Data
public class User {
    private Long id;
 private String username;
 private String password;
}

用户服务接口，只提供简略的用户查问和权限查问接口用于模仿。

UserService.java

package com.spring.security.demo.service;
import com.spring.security.demo.model.User;
import java.util.Set;
/**
 * 用户治理
 * @author Wulongbo
 * @date Jun 29, 2020
 */public interface UserService {
   /**
 * 依据用户名查找用户
 * @param username
 * @return
 */
 User findByUsername(String username);
 /**
 * 查找用户的菜单权限标识汇合
 * @param username
 * @return
 */
 Set<String> findPermissions(String username);
}

用户服务实现，只简略获取返回模仿数据，理论场景依据状况从 DAO 获取即可。

SysUserServiceImpl.java

package com.spring.security.demo.service.impl;
import java.util.HashSet;
import java.util.Set;
import com.spring.security.demo.model.User;
import com.spring.security.demo.service.UserService;
import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
import org.springframework.stereotype.Service;
@Service
public class SysUserServiceImpl implements UserService {
   @Override
 public User findByUsername(String username) {User user = new User();
 user.setId(1L);
 user.setUsername(username);
 String password = new BCryptPasswordEncoder().encode("123");
 user.setPassword(password);
 return user;
 }
   @Override
 public Set<String> findPermissions(String username) {Set<String> permissions = new HashSet<>();
 permissions.add("sys:user:view");
 permissions.add("sys:user:add");
 permissions.add("sys:user:edit");
 permissions.add("sys:user:delete");
 return permissions;
 }
}

用户控制器，提供三个测试接口，其中权限列表中未蕴含删除接口定义的权限（’sys:user:delete’），登录之后也将无权限调用。

UserController.java

package com.spring.security.demo.controller;
import com.spring.security.demo.vo.HttpResult;
import org.springframework.security.access.prepost.PreAuthorize;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
/**
 * 用户控制器
 * @author Wulongbo
 * @date Jun 29, 2020
 */
@RestController
@RequestMapping("user")
public class UserController {@PreAuthorize("hasAuthority('sys:user:view')")
    @GetMapping(value="/findAll")
    public HttpResult findAll() {return HttpResult.ok("the findAll service is called success.");
 }
    
    @PreAuthorize("hasAuthority('sys:user:edit')")
    @GetMapping(value="/edit")
    public HttpResult edit() {return HttpResult.ok("the edit service is called success.");
 }
    
    @PreAuthorize("hasAuthority('sys:user:delete')")
    @GetMapping(value="/delete")
    public HttpResult delete() {return HttpResult.ok("the delete service is called success.");
 }
}

登录认证查看过滤器

拜访接口的时候，登录认证查看过滤器 JwtAuthenticationFilter 会拦挡申请校验令牌和登录状态，并依据状况设置登录状态。

JwtAuthenticationFilter.java

package com.spring.security.demo.security;
import java.io.IOException;
import javax.servlet.FilterChain;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import com.spring.security.demo.utils.SecurityUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.security.authentication.AuthenticationManager;
import org.springframework.security.web.authentication.www.BasicAuthenticationFilter;
/**
 * 登录认证查看过滤器
 * @author Wulongbo
 * @date Jun 29, 2020
 */public class JwtAuthenticationFilter extends BasicAuthenticationFilter {
   
   @Autowired
 public JwtAuthenticationFilter(AuthenticationManager authenticationManager) {super(authenticationManager);
 }
    @Override
 protected void doFilterInternal(HttpServletRequest request, HttpServletResponse response, FilterChain chain) throws IOException, ServletException {
       // 获取 token, 并查看登录状态
 SecurityUtils.checkAuthentication(request);
 chain.doFilter(request, response);
 }
    
}

具体具体获取 token 和查看登录状态代码请查看 SecurityUtils 的 checkAuthentication 办法。

编译测试运行

•  我的项目目录构造如下，Maven install，开始执行 Maven 构建, 如果呈现如下信息，就阐明我的项目编译打包胜利了。

• 关上文件文件 DemoApplication.java -> Run DemoApplication，开始启动利用，当呈现如下信息的时候，就阐明利用启动胜利了，默认启动端口是 8080

• 关上浏览器，拜访：http://localhost:8080/swagger-ui.html，进入 swagger 接口文档界面。