spring boot整合JWT例子

application.properties

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1 2	jwt.expire_time=3600000 jwt.secret=MDk4ZjZiY2Q0NjIxZDM3M2NhZGU0ZTgzMjY34DFDSSSd =

JwtUtil

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package com.osp.ucenter.jwt;   import java.util.Date; import java.util.HashMap; import java.util.Map;   import org.springframework.beans.factory.annotation.Value; import org.springframework.context.annotation.Configuration;   import io.jsonwebtoken.Jwts; import io.jsonwebtoken.SignatureAlgorithm;   /**  * jwt工具类  *  * @author zhangmingcheng  */ @Configuration public class JwtUtil {       private static long EXPIRATION_TIME; // 1 hour       private static String SECRET;// 秘钥           @Value("${jwt.expire_time}")     public void setEXPIRATION_TIME(long eXPIRATION_TIME) {         EXPIRATION_TIME = eXPIRATION_TIME;     }       @Value("${jwt.secret}")     public void setSECRET(String sECRET) {         SECRET = sECRET;     }       /**      * 生成jwtToken      *      * @param username      * @return      */     public static String generateToken(String username) {         HashMap<String, Object> map = new HashMap<>();         // you can put any data in the map         map.put("username", username);         String jwt = Jwts.builder().setClaims(map).setExpiration(new Date(System.currentTimeMillis() + EXPIRATION_TIME))                 .signWith(SignatureAlgorithm.HS512, SECRET).compact();         return jwt;     }       /**      * 校验jwtToken      *      * @param token      * @return      */     public static String validateToken(String token) {         if (token != null) {             Map<String, Object> body = Jwts.parser().setSigningKey(SECRET).parseClaimsJws(token).getBody();             String username = (String) (body.get("username"));             if (username == null || username.isEmpty()) {                 throw new TokenValidationException("Wrong token without username");             } else {                 return username;             }         } else {             throw new TokenValidationException("Missing token");         }     }           public static long getEXPIRATION_TIME(){         return JwtUtil.EXPIRATION_TIME;     }         static class TokenValidationException extends RuntimeException {         /**          *          */         private static final long serialVersionUID = -7946690694369283250L;           public TokenValidationException(String msg) {             super(msg);         }     } }

　　服务端登录验证成功生成jwtToken

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1	String accessToken = JwtUtil.generateToken(ucUser.getUserName());

　　客户端发送请求，过滤器拦截请求验证jwtToken

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1	JwtUtil.validateToken(osptoken);