springsecurity整合jwt

Spring Security 是一个用于为 Spring 应用程序提供安全性的框架。JWT (JSON Web Token) 是一种用于在双方之间传递身份验证数据的标准。使用 Spring Security 和 JWT 的结合可以提供一种方便的方式来验证用户身份并保护应用程序的 API。

要在 Spring Security 中使用 JWT，首先需要导入 Spring Security 的相关依赖，然后配置一些额外的过滤器来拦截请求并验证 JWT。在验证 JWT 成功后，可以使用 Spring Security 的方式来授权用户并管理角色。

需要注意的是，在使用 JWT 时需要自行实现加密和解密的逻辑，以及对过期时间，刷新token等的管理

相关问题

SpringSecurity整合jwt

Spring Security和JWT(JSON Web Token)可以很好地结合使用，以提供安全的身份验证和授权机制。

首先，你需要在你的Spring项目中添加Spring Security和JWT的依赖。例如，在Maven项目中，你可以在pom.xml文件中添加以下依赖：

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

<dependency>
    <groupId>io.jsonwebtoken</groupId>
    <artifactId>jjwt</artifactId>
    <version>0.9.1</version>
</dependency>

接下来，在Spring Security的配置类中，你可以定义一个JwtTokenProvider类，该类负责生成JWT并进行验证。

@Component
public class JwtTokenProvider {

    private static final String SECRET_KEY = "your-secret-key";
    private static final long EXPIRATION_TIME = 86400000; // 24 hours

    public String generateToken(Authentication authentication) {
        UserDetails userDetails = (UserDetails) authentication.getPrincipal();

        Date now = new Date();
        Date expiryDate = new Date(now.getTime() + EXPIRATION_TIME);

        return Jwts.builder()
                .setSubject(userDetails.getUsername())
                .setIssuedAt(now)
                .setExpiration(expiryDate)
                .signWith(SignatureAlgorithm.HS512, SECRET_KEY)
                .compact();
    }

    public boolean validateToken(String token) {
        try {
            Jwts.parser().setSigningKey(SECRET_KEY).parseClaimsJws(token);
            return true;
        } catch (SignatureException ex) {
            System.out.println("Invalid JWT signature");
        } catch (MalformedJwtException ex) {
            System.out.println("Invalid JWT token");
        } catch (ExpiredJwtException ex) {
            System.out.println("Expired JWT token");
        } catch (UnsupportedJwtException ex) {
            System.out.println("Unsupported JWT token");
        } catch (IllegalArgumentException ex) {
            System.out.println("JWT claims string is empty");
        }
        return false;
    }

    public String getUsernameFromToken(String token) {
        Claims claims = Jwts.parser()
                .setSigningKey(SECRET_KEY)
                .parseClaimsJws(token)
                .getBody();

        return claims.getSubject();
    }
}

在上述代码中，SECRET_KEY是用来签署和验证JWT的密钥，EXPIRATION_TIME表示JWT的有效期。

然后，在Spring Security的配置类中，你可以继承WebSecurityConfigurerAdapter类，并重写configure(HttpSecurity http)方法来配置安全规则和JWT的使用。

@Configuration
@EnableWebSecurity
public class SecurityConfig extends WebSecurityConfigurerAdapter {

    @Autowired
    private JwtTokenProvider jwtTokenProvider;

    @Override
    protected void configure(HttpSecurity http) throws Exception {
        http.csrf().disable()
                .authorizeRequests()
                .antMatchers("/api/auth/**").permitAll()
                .anyRequest().authenticated()
                .and()
                .apply(new JwtConfigurer(jwtTokenProvider));
    }
}

上述代码中，我们对`/api/auth/**`路径下的请求进行了放行，其他请求需要进行身份验证。JwtConfigurer类用于配置JWT的过滤器。

最后，你可以创建一个控制器来处理用户身份验证和生成JWT的请求。

@RestController
@RequestMapping("/api/auth")
public class AuthController {

    @Autowired
    private JwtTokenProvider jwtTokenProvider;

    @Autowired
    private AuthenticationManager authenticationManager;

    @PostMapping("/login")
    public ResponseEntity<?> login(@RequestBody LoginRequest loginRequest) {

        Authentication authentication = authenticationManager.authenticate(
                new UsernamePasswordAuthenticationToken(loginRequest.getUsername(), loginRequest.getPassword())
        );

        SecurityContextHolder.getContext().setAuthentication(authentication);

        String token = jwtTokenProvider.generateToken(authentication);
        return ResponseEntity.ok(new JwtAuthenticationResponse(token));
    }
}

在上述代码中，我们使用AuthenticationManager来验证用户的用户名和密码，并生成JWT。JwtAuthenticationResponse类可以用来返回JWT给客户端。

以上就是Spring Security和JWT整合的简单示例。你可以根据自己的需求进行修改和扩展。希望对你有所帮助！如果你还有其他问题，请随时提问。

spring security整合jwt

Spring Security是一个基于Spring框架的安全框架，用于保护Web应用程序和RESTful服务。JWT（JSON Web Token）是一种用于安全传输信息的开放标准。

Spring Security可以与JWT一起使用，提供一种安全的方式来保护Web应用程序和RESTful服务。下面是Spring Security整合JWT的步骤：

1. 添加JWT依赖项

在pom.xml文件中添加以下依赖项：

<dependency>
    <groupId>io.jsonwebtoken</groupId>
    <artifactId>jjwt</artifactId>
    <version>0.9.1</version>
</dependency>

2. 创建JWT工具类

创建一个JWT工具类，该类用于生成和验证JWT令牌。示例代码如下：

import io.jsonwebtoken.Claims;
import io.jsonwebtoken.Jwts;
import io.jsonwebtoken.SignatureAlgorithm;
import org.springframework.security.core.userdetails.UserDetails;
import org.springframework.stereotype.Component;

import java.util.Date;
import java.util.HashMap;
import java.util.Map;
import java.util.function.Function;

@Component
public class JwtUtils {

    private static final String SECRET_KEY = "secret";

    public String generateToken(UserDetails userDetails) {
        Map<String, Object> claims = new HashMap<>();
        return createToken(claims, userDetails.getUsername());
    }

    private String createToken(Map<String, Object> claims, String subject) {
        return Jwts.builder()
                .setClaims(claims)
                .setSubject(subject)
                .setIssuedAt(new Date(System.currentTimeMillis()))
                .setExpiration(new Date(System.currentTimeMillis() + 1000 * 60 * 60 * 10))
                .signWith(SignatureAlgorithm.HS256, SECRET_KEY)
                .compact();
    }

    public <T> T extractClaim(String token, Function<Claims, T> claimsResolver) {
        final Claims claims = extractAllClaims(token);
        return claimsResolver.apply(claims);
    }

    private Claims extractAllClaims(String token) {
        return Jwts.parser().setSigningKey(SECRET_KEY).parseClaimsJws(token).getBody();
    }

    public String extractUsername(String token) {
        return extractClaim(token, Claims::getSubject);
    }

    public Date extractExpiration(String token) {
        return extractClaim(token, Claims::getExpiration);
    }

    private boolean isTokenExpired(String token) {
        final Date expiration = extractExpiration(token);
        return expiration.before(new Date());
    }

    public boolean validateToken(String token, UserDetails userDetails) {
        final String username = extractUsername(token);
        return (username.equals(userDetails.getUsername()) && !isTokenExpired(token));
    }
}

3. 创建Spring Security配置类

创建一个Spring Security配置类，该类用于配置Spring Security和JWT。示例代码如下：

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.config.http.SessionCreationPolicy;
import org.springframework.security.core.userdetails.UserDetailsService;
import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
import org.springframework.security.web.authentication.UsernamePasswordAuthenticationFilter;

@Configuration
@EnableWebSecurity
@EnableGlobalMethodSecurity(prePostEnabled = true)
public class SecurityConfig extends WebSecurityConfigurerAdapter {

    @Autowired
    private JwtRequestFilter jwtRequestFilter;

    @Autowired
    private UserDetailsService userDetailsService;

    @Autowired
    private JwtAuthenticationEntryPoint jwtAuthenticationEntryPoint;

    @Autowired
    public void configureGlobal(AuthenticationManagerBuilder auth) throws Exception {
        auth.userDetailsService(userDetailsService).passwordEncoder(passwordEncoder());
    }

    @Bean
    public BCryptPasswordEncoder passwordEncoder() {
        return new BCryptPasswordEncoder();
    }

    @Bean
    @Override
    public AuthenticationManager authenticationManagerBean() throws Exception {
        return super.authenticationManagerBean();
    }

    @Override
    protected void configure(HttpSecurity http) throws Exception {
        http.csrf().disable().authorizeRequests()
                .antMatchers(HttpMethod.POST, "/authenticate").permitAll()
                .anyRequest().authenticated()
                .and()
                .exceptionHandling().authenticationEntryPoint(jwtAuthenticationEntryPoint)
                .and()
                .sessionManagement().sessionCreationPolicy(SessionCreationPolicy.STATELESS);
        http.addFilterBefore(jwtRequestFilter, UsernamePasswordAuthenticationFilter.class);
    }
}

4. 创建JWT认证过滤器

创建一个JWT认证过滤器，该过滤器用于验证JWT令牌并将用户授权。示例代码如下：

import io.jsonwebtoken.ExpiredJwtException;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.security.authentication.AuthenticationManager;
import org.springframework.security.authentication.UsernamePasswordAuthenticationToken;
import org.springframework.security.core.context.SecurityContextHolder;
import org.springframework.security.core.userdetails.UserDetails;
import org.springframework.security.web.authentication.WebAuthenticationDetailsSource;
import org.springframework.stereotype.Component;
import org.springframework.web.filter.OncePerRequestFilter;

import javax.servlet.FilterChain;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;

@Component
public class JwtRequestFilter extends OncePerRequestFilter {

    @Autowired
    private UserDetailsService userDetailsService;

    @Autowired
    private JwtUtils jwtUtils;

    @Autowired
    private AuthenticationManager authenticationManager;

    @Override
    protected void doFilterInternal(HttpServletRequest request, HttpServletResponse response, FilterChain chain) throws ServletException, IOException {
        final String authorizationHeader = request.getHeader("Authorization");

        String username = null;
        String jwt = null;

        if (authorizationHeader != null && authorizationHeader.startsWith("Bearer ")) {
            jwt = authorizationHeader.substring(7);
            try {
                username = jwtUtils.extractUsername(jwt);
            } catch (ExpiredJwtException e) {
                e.printStackTrace();
            }
        }

        if (username != null && SecurityContextHolder.getContext().getAuthentication() == null) {
            UserDetails userDetails = this.userDetailsService.loadUserByUsername(username);
            if (jwtUtils.validateToken(jwt, userDetails)) {
                UsernamePasswordAuthenticationToken usernamePasswordAuthenticationToken = new UsernamePasswordAuthenticationToken(userDetails, null, userDetails.getAuthorities());
                usernamePasswordAuthenticationToken.setDetails(new WebAuthenticationDetailsSource().buildDetails(request));
                SecurityContextHolder.getContext().setAuthentication(usernamePasswordAuthenticationToken);
            }
        }
        chain.doFilter(request, response);
    }
}

5. 创建JWT认证入口点

创建一个JWT认证入口点，该入口点用于处理认证失败的请求。示例代码如下：

import org.springframework.security.core.AuthenticationException;
import org.springframework.security.web.AuthenticationEntryPoint;
import org.springframework.stereotype.Component;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;

@Component
public class JwtAuthenticationEntryPoint implements AuthenticationEntryPoint {

    @Override
    public void commence(HttpServletRequest request, HttpServletResponse response, AuthenticationException authException) throws IOException, ServletException {
        response.sendError(HttpServletResponse.SC_UNAUTHORIZED, "Unauthorized");
    }
}

6. 创建控制器

创建一个控制器，该控制器用于处理用户身份验证和生成JWT令牌。示例代码如下：

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.ResponseEntity;
import org.springframework.security.authentication.AuthenticationManager;
import org.springframework.security.authentication.UsernamePasswordAuthenticationToken;
import org.springframework.security.core.userdetails.UserDetails;
import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
import org.springframework.web.bind.annotation.*;

@RestController
public class UserController {

    @Autowired
    private AuthenticationManager authenticationManager;

    @Autowired
    private JwtUtils jwtUtils;

    @Autowired
    private UserDetailsService userDetailsService;

    @Autowired
    private BCryptPasswordEncoder passwordEncoder;

    @PostMapping("/authenticate")
    public ResponseEntity<?> createAuthenticationToken(@RequestBody AuthenticationRequest authenticationRequest) throws Exception {
        try {
            authenticationManager.authenticate(
                    new UsernamePasswordAuthenticationToken(authenticationRequest.getUsername(), authenticationRequest.getPassword())
            );
        } catch (Exception e) {
            throw new Exception("Incorrect username or password", e);
        }

        final UserDetails userDetails = userDetailsService.loadUserByUsername(authenticationRequest.getUsername());

        final String jwt = jwtUtils.generateToken(userDetails);

        return ResponseEntity.ok(new AuthenticationResponse(jwt));
    }

    @PostMapping("/register")
    public ResponseEntity<?> registerUser(@RequestBody User user) {
        user.setPassword(passwordEncoder.encode(user.getPassword()));
        return ResponseEntity.ok(userService.saveUser(user));
    }
}

以上是Spring Security整合JWT的基本步骤，可以根据具体的需求进行调整和扩展。