JwtUtils.java
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package org.nafmii.common.utils;
import io.jsonwebtoken.Claims;
import io.jsonwebtoken.Jwts;
import io.jsonwebtoken.SignatureAlgorithm;
import lombok.extern.slf4j.Slf4j;
import org.nafmii.common.constant.HttpClientHeaderEnum;
import java.util.Date;
import java.util.HashMap;
import java.util.Map;
@Slf4j
public class JwtUtils {
public static final String TOKEN_HEADER = "Authorization";
public static final long EXPIRITION = 1000 * 60 * 60 * 24 * 7;
// public static final long EXPIRITION = 1000 * 60;
public static final String APPSECRET_KEY = "qwertyuiop123456780";
public static String generateJsonWebToken(Map<String,Object> param) {
if (param.isEmpty()) {
return null;
}
return Jwts
.builder()
.claim(HttpClientHeaderEnum.USER_HEADER_USER_ID.getCode(), param.get(HttpClientHeaderEnum.USER_HEADER_USER_ID.getCode()))
.setIssuedAt(new Date())
.setExpiration(new Date(System.currentTimeMillis() + EXPIRITION))
.signWith(SignatureAlgorithm.HS256, APPSECRET_KEY).compact();
}
public static Claims checkJWT(String token) {
try {
final Claims claims = Jwts.parser().setSigningKey(APPSECRET_KEY).parseClaimsJws(token).getBody();
return claims;
} catch (Exception e) {
e.printStackTrace();
return null;
}
}
/**
* 获取用户信息
* @param token
* @return
*/
public static Claims getUserInfo(String token){
return Jwts.parser().setSigningKey(APPSECRET_KEY).parseClaimsJws(token).getBody();
}
/**
* 是否过期
* @param token
* @return
*/
public static boolean isExpiration(String token){
try {
Claims claims = Jwts.parser().setSigningKey(APPSECRET_KEY).parseClaimsJws(token).getBody();
return claims.getExpiration().before(new Date());
} catch (Exception e){
log.error("令牌已过期");
return true;
}
}
public static void main(String[] args) {
Map<String,Object> map = new HashMap<>();
map.put("userId",12312321313L);
String token = generateJsonWebToken(map);
System.out.println(token);
Claims claims = getUserInfo(token);
System.out.println(claims.get(HttpClientHeaderEnum.USER_HEADER_USER_ID.getCode()));
System.out.println(isExpiration(token));
}
}