Java工具集-JWT工具类

        <dependency>
               <groupId>io.jsonwebtoken</groupId>
               <artifactId>jjwt</artifactId>
               <version>0.6.0</version>
        </dependency>

package com.simple.util.jwt;

import com.sun.org.apache.xml.internal.security.algorithms.SignatureAlgorithm;
import org.springframework.boot.context.properties.ConfigurationProperties;
import java.util.Date;
import java.util.Map;
import io.jsonwebtoken.Claims;
import io.jsonwebtoken.JwtBuilder;
import io.jsonwebtoken.Jwts;
/**
 * @program: simple_tools
 * @description:
 * @author: ChenWenLong
 * @create: 2019-12-29 16:41
 **/
@ConfigurationProperties("jwt.config")
public class JwtUtils {
    //签名私钥
    private String key;
    //签名的失效时间
    private Long ttl;

    /**
     * 设置认证token
     *      id:登录用户id
     *      subject：登录用户名
     *
     */
    public String createJwt(String id, String name, Map<String,Object> map) {
        //1.设置失效时间
        long now = System.currentTimeMillis();//当前毫秒
        long exp = now + ttl;
        //2.创建jwtBuilder
        JwtBuilder jwtBuilder = Jwts.builder().setId(id).setSubject(name)
                .setIssuedAt(new Date())
                .signWith(SignatureAlgorithm.HS256, key);
        //3.根据map设置claims
        for(Map.Entry<String,Object> entry : map.entrySet()) {
            jwtBuilder.claim(entry.getKey(),entry.getValue());
        }
        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;
    }

    public String getKey() {
        return key;
    }

    public void setKey(String key) {
        this.key = key;
    }

    public Long getTtl() {
        return ttl;
    }

    public void setTtl(Long ttl) {
        this.ttl = ttl;
    }
}