JWT工具类

package com.ynhrm.common.utils;

import io.jsonwebtoken.Claims;
import io.jsonwebtoken.JwtBuilder;
import io.jsonwebtoken.Jwts;
import io.jsonwebtoken.SignatureAlgorithm;
import lombok.Data;
import lombok.Getter;
import lombok.Setter;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.stereotype.Component;

import java.util.Date;
import java.util.Map;



@Component
@ConfigurationProperties("jwt.config")
@Data
public class JWTUtils {
    private  String key;//签名私钥
    private Long ttl;//签名失效时间
   /* private  String key="zcc-ynhrm";
    private int ttl=3600000;*/

    /**
     * 设置认证token
     *         参数：
     *          id:登陆用户id
     *          subject(主题):登陆用户名
     */
    public String createJWT(String id, String subject, Map<String,Object> map){
        //1.设置失效时间
        long now=System.currentTimeMillis();//当前毫秒数
        long exp=now+ttl;
        //2.创建jwtBuilder
        JwtBuilder jwtBuilder = Jwts.builder().setId(id).setSubject(subject)
                .setIssuedAt(new Date())
                .signWith(SignatureAlgorithm.HS256, key);
        //3.通过map设置claims,指定失效时间
        for (Map.Entry<String,Object> entry:map.entrySet()){
            jwtBuilder.claim(entry.getKey(),entry.getValue());
        }
        //jwtBuilder.setClaims(map);
        jwtBuilder.setExpiration(new Date(exp));
        //4.创建token
        String token = jwtBuilder.compact();
        return token;
    }

    /**
     * 解析token字符串获取clamis
     */

    public Claims parseJWT(String token){
        Claims claims = Jwts.parser().setSigningKey(key).parseClaimsJws(token).getBody();
        return claims;
    }
}