javaWeb秘钥工具类

import java.security.Key;
import java.util.HashMap;
import java.util.Map;

import javax.crypto.spec.SecretKeySpec;
import javax.xml.bind.DatatypeConverter;

import com.huatek.torch.util.uuid.Uuid;

import io.jsonwebtoken.Jwts;
import io.jsonwebtoken.SignatureAlgorithm;

public class JavaWebToken { 

    //该方法使用HS256算法和Secret:bankgl生成signKey
    private static Key getKeyInstance() {
        //We will sign our JavaWebToken with our ApiKey secret
        SignatureAlgorithm signatureAlgorithm = SignatureAlgorithm.HS256;
        byte[] apiKeySecretBytes = DatatypeConverter.parseBase64Binary("bankgl");
        Key signingKey = new SecretKeySpec(apiKeySecretBytes, signatureAlgorithm.getJcaName());
        return signingKey;
    }

    //使用HS256签名算法和生成的signingKey最终的Token,claims中是有效载荷
    public static String createJavaWebToken(Map<String, Object> claims) {
        return Jwts.builder().setClaims(claims).signWith(SignatureAlgorithm.HS256, getKeyInstance()).compact();
    }

    //解析Token，同时也能验证Token，当验证失败返回null
    public static Map<String, Object> parserJavaWebToken(String jwt) {
            Map<String, Object> jwtClaims =
                    Jwts.parser().setSigningKey(getKeyInstance()).parseClaimsJws(jwt).getBody();
            return jwtClaims; 
    }
    
    public static void main(String[] args) {
    	Map<String,Object> m = new HashMap<String,Object>();
        m.put("userid", Uuid.getUUID());
        String token = JavaWebToken.createJavaWebToken(m);
        System.out.println(token);
	}
}