1、后台编写加密和解密的方法,注意引入对应的jar包
<dependency>
<groupId>io.jsonwebtoken</groupId>
<artifactId>jjwt</artifactId>
<version>0.7.0</version>
</dependency>
2、后台代码
package com.example.token;
import io.jsonwebtoken.Claims;
import io.jsonwebtoken.JwtBuilder;import io.jsonwebtoken.Jwts;
import io.jsonwebtoken.SignatureAlgorithm;
import java.security.Key;
import java.util.Date;
import javax.crypto.spec.SecretKeySpec;
import javax.xml.bind.DatatypeConverter;
/**
* Toten令牌验证
* @since: 2018年6月21日下午4:18:21
* @version: 1.0
*/
public class Token {
/**
* 加密
* @param id
* @param issuer
* @param subject
* @param ttlMillis
* @return
*/
private String createJWT(String id, String issuer, String subject, long ttlMillis) {
//The JWT signature algorithm we will be using to sign the token
SignatureAlgorithm signatureAlgorithm = SignatureAlgorithm.HS256;
long nowMillis = System.currentTimeMillis();
Date now = new Date(nowMillis);
//We will sign our JWT with our ApiKey secret
byte[] apiKeySecretBytes = DatatypeConverter.parseBase64Binary("4234dfasdfqdd");
Key signingKey = new SecretKeySpec(apiKeySecretBytes, signatureAlgorithm.getJcaName());
//Let's set the JWT Claims
JwtBuilder builder = Jwts.builder().setId(id)
.setIssuedAt(now)
.setSubject(subject)
.setIssuer(issuer)
.signWith(signatureAlgorithm, signingKey);
//if it has been specified, let's add the expiration
if (ttlMillis >= 0) {
long expMillis = nowMillis + ttlMillis;
Date exp = new Date(expMillis);
builder.setExpiration(exp);
}
//Builds the JWT and serializes it to a compact, URL-safe string
return builder.compact();
}
/**
* 解密
* @param jwt
*/
private void parseJWT(String jwt) {
//This line will throw an exception if it is not a signed JWS (as expected)
Claims claims = Jwts.parser()
.setSigningKey(DatatypeConverter.parseBase64Binary("4234dfasdfqdd"))
.parseClaimsJws(jwt).getBody();
System.out.println("ID: " + claims.getId());
System.out.println("Subject: " + claims.getSubject());
System.out.println("Issuer: " + claims.getIssuer());
System.out.println("Expiration: " + claims.getExpiration());
}
public static void main(String[] args) {
Token t = new Token();
//加密
String jwt = t.createJWT("3133", "13dsdda", "afrefsa", 20171252);
System.out.println(jwt);
//解密
t.parseJWT(jwt);
}
}
3、测试结果
eyJhbGciOiJIUzI1NiJ9.eyJqdGkiOiIzMTMzIiwiaWF0IjoxNTI5NTY5MDQ1LCJzdWIiOiJhZnJlZnNhIiwiaXNzIjoiMTNkc2RkYSIsImV4cCI6MTUyOTU4OTIxNn0.nLJ2pRogA7Y6ZboqbRR44fARGCfMnkos0XtjF2BvIuw
ID: 3133
Subject: afrefsa
Issuer: 13dsdda
Expiration: Thu Jun 21 21:53:36 CST 2018