权限模块

安瑾然

2022-07-18 9b3dbdc74b2a508249b1d1e489db8a2134a3a7de

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package com.example.jz.auth;
 
import com.auth0.jwt.JWT;
import com.auth0.jwt.JWTVerifier;
import com.auth0.jwt.algorithms.Algorithm;
import com.auth0.jwt.interfaces.Claim;
import com.auth0.jwt.interfaces.DecodedJWT;
import org.springframework.stereotype.Component;
 
import java.util.Calendar;
import java.util.HashMap;
 
/**
 * @author 安瑾然
 * @data 2022/7/18 - 10:46 AM
 * @description token工具类
 */
@Component
public class TokenJwtManager {
 
    // 设置token时间
    private int tokenEcpiration = 24 * 60 * 60 * 1000; // 1天
 
    // 编码密钥
    private String tokenSignKey = "6^wy=$}E";
 
    // 1、根据用户名生成token
    public String createToken(String username) {
        Calendar calendar = Calendar.getInstance();
        calendar.add(Calendar.SECOND, tokenEcpiration);
 
        return JWT.create()
                .withHeader(new HashMap<>())
                .withClaim("username", username)
                .withExpiresAt(calendar.getTime())
                .sign(Algorithm.HMAC256(tokenSignKey));
    }
 
    // 2、根据token得到用户名信息
    public String getUserName(String token) {
        JWTVerifier build = JWT.require(Algorithm.HMAC256(tokenSignKey)).build();
        DecodedJWT verify = build.verify(token);
        Claim username = verify.getClaim("username");
        return username.asString();
    }
}