jwt

package cn.hshb.analysis.core.utils;
import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;
import com.auth0.jwt.JWT;
import com.auth0.jwt.JWTCreator;
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.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import java.util.Date;
public class JWTUtil {
    private final static Log logger = LogFactory.getLog(JWTUtil.class);
    private static final String SECRET = "n7B1pIPG#F!#1RQ7M1HJwS53$Bn#@H56W@Zc$4x3";
    private static final String EXP = "exp";
    private static final String PAYLOAD = "payload";
/**
     * get jwt String of object
     *
     * @param object the POJO object
     * @param maxAge the milliseconds of life time
     * @return the jwt token
     */
public static <T> String sign(T object, long maxAge) {
        try {
            Algorithm algorithm = Algorithm.HMAC256(SECRET);
JWTCreator.Builder signer = JWT.create();
signer.withClaim(PAYLOAD, JSONObject.toJSONString(object));
            long expire = System.currentTimeMillis() + maxAge;
signer.withExpiresAt(new Date(expire));
            return signer.sign(algorithm);
} catch (Exception e) {
            return null;
}
    }


    /**
     * get the object of jwt if not expired
     *
     * @return POJO object
     */
public static <T> T unsign(String token, Class<T> classT) {
        try {
            Algorithm algorithm = Algorithm.HMAC256(SECRET);
JWTVerifier verifier = JWT.require(algorithm).build(); //Reusable verifier instance
DecodedJWT jwt = verifier.verify(token);
Claim claim = jwt.getClaim(PAYLOAD);
            return JSON.parseObject(claim.asString(), classT);
} catch (Exception e) {
            return null;
}
    }

    public static void main(String[] args) throws Exception {
        Page page = new Page();
String token = JWTUtil.sign(page, 3600000);
logger.info(token);
//Thread.sleep(1200);
        //token += "a";
Page currentPage = JWTUtil.unsign(token, Page.class);
logger.info(currentPage);
/*JWTCreator.Builder signer = JWT.create();
        signer.withClaim("user", "s");
        long expire = System.currentTimeMillis() + 2000 * 1000;
        signer.withExpiresAt(new Date(expire));
        String token = signer.sign(algorithm);
        logger.info(token);
        try {
            DecodedJWT jwt = JWT.decode(token);
            String issuer = jwt.getIssuer();
            Claim claim = jwt.getClaim("user");
            Date expiresAt = jwt.getExpiresAt();
            logger.info(claim.asString());
            logger.info(expiresAt.getTime());
        } catch (JWTDecodeException exception) {
            //Invalid token
        }
        algorithm = Algorithm.HMAC256("n7B1pIPG#F!#1RQ7M1HJwS53$Bn#@H56W@Zc$4x33");
        JWTVerifier verifier = JWT.require(algorithm)
                .build(); //Reusable verifier instance
        DecodedJWT jwt = verifier.verify(token);
        logger.info(jwt);*/
}
}

<!-- jwt token -->
<dependency>
    <groupId>com.auth0</groupId>
    <artifactId>java-jwt</artifactId>
    <version>${java-jwt.version}</version>
</dependency>

package cn.hshb.analysis.api.controller;
import cn.hshb.analysis.core.common.ApiResponse;
import cn.hshb.analysis.core.utils.JWTUtil;
import cn.hshb.analysis.entity.exception.BizErrorCode;
import cn.hshb.analysis.entity.model.UserInfo;
import com.alibaba.fastjson.JSONObject;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;
import java.util.ArrayList;
import java.util.List;
/**
 * @author 作者 * @version V1.0
 * @Title: LoginController
 * @Package cn.hshb.analysis.api.controller
 * 用于身份登录认证
* @date 2018/2/22 15:14
 */
@RestController
public class LoginController {
    private static List<UserInfo> validPeoples = new ArrayList<>();
    static {
        /*
         * 此处设置可以用于登录的用户身份信息,发布正式环境时需要避免用户名密码过于简单         */
validPeoples.add(new UserInfo("admin", "admin"));
validPeoples.add(new UserInfo("admin124", "154123"));
validPeoples.add(new UserInfo("admin1223", "addsfs"));
}

    @RequestMapping({"/login"})
    public ApiResponse login(@RequestParam String username, @RequestParam String password) {
        /**
         * @param:[username, password]
         * 登录认证
* 第三方系统要调用此系统中的接口必须先调用此接口获取token
         * @return: cn.hshb.analysis.core.common.ApiResponse
         * @date:2018/2/22
*/
if (username == null || password == null) {
            return ApiResponse.fail();
}
        UserInfo user = null;
        for (UserInfo userInfo : validPeoples) {
            if (username.equals(userInfo.getUsername())) {
                user = userInfo;
                break;
}
        }
        if (user == null) {
            return ApiResponse.fail(BizErrorCode.CU_MSG_000002.getCode(), BizErrorCode.CU_MSG_000002.getMsg());
} else {
            if (!password.equals(user.getPassword())) {
                return ApiResponse.fail(BizErrorCode.CU_MSG_000007.getCode(), BizErrorCode.CU_MSG_000007.getMsg());
}
        }
        JSONObject data = new JSONObject();
data.put("token", JWTUtil.sign(user, 7200 * 1000));
data.put("expire", 7200);
        return ApiResponse.success(data);
}
}