1.先看几个实现类，然后再看源码分析这样会更清晰
- OAuth2AccessToken接口的默认实现是DefaultOAuth2AccessToken类（自带过期时间属性）
- OAuth2RefreshToken接口的默认实现是DefaultOAuth2RefreshToken类（不带过期时间属性）
- ExpiringOAuth2RefreshToken接口父接口是OAuth2RefreshToken，ExpiringOAuth2RefreshToken的默认实现是DefaultExpiringOAuth2RefreshToken（自带过期时间属性）
2.当前demo是使用自定义方式来实现access_token和refresh_token的生成，看如下代码：
package com.yaomy.security.oauth2.enhancer;
import com.google.common.collect.Maps;
import org.apache.commons.lang3.StringUtils;
import org.springframework.security.oauth2.common.*;
import org.springframework.security.oauth2.provider.OAuth2Authentication;
import org.springframework.security.oauth2.provider.token.TokenEnhancer;
import java.util.Map;
import java.util.UUID;
/**
* @Description: 用户自定义token令牌，包括access_token和refresh_token
* @ProjectName: spring-parent
* @Package: com.yaomy.security.oauth2.enhancer.UserTokenEnhancer
* @Date: 2019/7/9 19:43
* @Version: 1.0
*/
public class UserTokenEnhancer implements TokenEnhancer {
/**
* @Description 重新定义令牌token
* @Date 2019/7/9 19:56
* @Version 1.0
*/
@Override
public OAuth2AccessToken enhance(OAuth2AccessToken accessToken, OAuth2Authentication authentication) {
if(accessToken instanceof DefaultOAuth2AccessToken){
DefaultOAuth2AccessToken token = (DefaultOAuth2AccessToken) accessToken;
token.setValue(getToken());
OAuth2RefreshToken refreshToken = token.getRefreshToken();
if(refreshToken instanceof OAuth2RefreshToken){
token.setRefreshToken(new OAuth2RefreshToken(getToken()));
}
Map<String, Object> additionalInformation = Maps.newHashMap();
additionalInformation.put("client_id", authentication.getOAuth2Request().getClientId());
//添加额外配置信息
token.setAdditionalInformation(additionalInformation);
return token;
}
return accessToken;
}
/**
* @Description 生成自定义token
* @Date 2019/7/9 19:50
* @Version 1.0
*/
private String getToken(){
return StringUtils.join(UUID.randomUUID().toString().replace("-", ""));
}
}
在实际的测试环境之中我可以拿到access_token的过期时间，并且在redis的客户端查看access_token相关键值对都是跟我设置的过期时间是一直的，但是refresh_token设置的过期
时间一直不起作用，TTL显示-1，也就是一直有效，感觉就很奇怪，所以就翻看了TokenStore的实现类RedisTokenStore，源码如下
- 生成access_token键值对的代码如下：
public void storeAccessToken(OAuth2AccessToken token, OAuth2Authentication authentication) {
//序列化相关key
byte[] serializedAccessToken = this.serialize((Object)token);
byte[] serializedAuth = this.serialize((Object)authentication);
byte[] accessKey = this.serializeKey("access:" + token.getValue());
byte[] authKey = this.serializeKey("auth:" + token.getValue());
byte[] authToAccessKey = this.serializeKey("auth_to_access:" + this.authenticationKeyGenerator.extractKey(authentication));
byte[] approvalKey = this.serializeKey("uname_to_access:" + getApprovalKey(authentication));
byte[] clientId = this.serializeKey("client_id_to_access:" + authentication.getOAuth2Request().getClientId());
RedisConnection conn = this.getConnection();
try {
conn.openPipeline();
if (springDataRedis_2_0) {
try {
//存储键值对
this.redisConnectionSet_2_0.invoke(conn, accessKey, serializedAccessToken);
this.redisConnectionSet_2_0.invoke(conn, authKey, serializedAuth);
this.redisConnectionSet_2_0.invoke(conn, authToAccessKey, serializedAccessToken);
} catch (Exception var24) {
throw new RuntimeException(var24);
}
} else {
conn.set(accessKey, serializedAccessToken);
conn.set(authKey, serializedAuth);
conn.set(authToAccessKey, serializedAccessToken);
}
if (!authentication.isClientOnly()) {
conn.sAdd(approvalKey, new byte[][]{serializedAccessToken});
}
conn.sAdd(clientId, new byte[][]{serializedAccessToken});
//设置access_token过期时间
if (token.getExpiration() != null) {
int seconds = token.getExpiresIn();
conn.expire(accessKey, (long)seconds);
conn.expire(authKey, (long)seconds);
conn.expire(authToAccessKey, (long)seconds);
conn.expire(clientId, (long)seconds);
conn.expire(approvalKey, (long)seconds);
}
OAuth2RefreshToken refreshToken = token.getRefreshToken();
if (refreshToken != null && refreshToken.getValue() != null) {
byte[] refresh = this.serialize(token.getRefreshToken().getValue());
byte[] auth = this.serialize(token.getValue());
byte[] refreshToAccessKey = this.serializeKey("refresh_to_access:" + token.getRefreshToken().getValue());
byte[] accessToRefreshKey = this.serializeKey("access_to_refresh:" + token.getValue());
if (springDataRedis_2_0) {
try {
this.redisConnectionSet_2_0.invoke(conn, refreshToAccessKey, auth);
this.redisConnectionSet_2_0.invoke(conn, accessToRefreshKey, refresh);
} catch (Exception var23) {
throw new RuntimeException(var23);
}
} else {
conn.set(refreshToAccessKey, auth);
conn.set(accessToRefreshKey, refresh);
}
//判断refresh_token对象是否是ExpiringOAuth2RefreshToken的实例对象，这一段是设置refresh_token的关键，如果是就会进行过期时间
//设置，否则生成的refresh_token相关的键值对永远有效
if (refreshToken instanceof ExpiringOAuth2RefreshToken) {
ExpiringOAuth2RefreshToken expiringRefreshToken = (ExpiringOAuth2RefreshToken)refreshToken;
Date expiration = expiringRefreshToken.getExpiration();
if (expiration != null) {
int seconds = Long.valueOf((expiration.getTime() - System.currentTimeMillis()) / 1000L).intValue();
conn.expire(refreshToAccessKey, (long)seconds);
conn.expire(accessToRefreshKey, (long)seconds);
}
}
}
conn.closePipeline();
} finally {
conn.close();
}
}
上面的refreshToken instanceof ExpiringOAuth2RefreshToken这一段代码是来判断刷新token是否是带有有效期时间的ExpiringOAuth2RefreshToken实例对象，我们可以
看到上面我自定义的生成refresh_token的实例对象是OAuth2RefreshToken类型，只带有一个refresh_token值，而没有有效时间的字段值，我们看下ExpiringOAuth2RefreshToken
类的源码：
package org.springframework.security.oauth2.common;
import java.util.Date;
public interface ExpiringOAuth2RefreshToken extends OAuth2RefreshToken {
Date getExpiration();
}
我们可以看到ExpiringOAuth2RefreshToken是OAuth2RefreshToken的子类，所以我们可以将生成的refresh_token实例对象更改为ExpiringOAuth2RefreshToken对象，代码如下：
@Override
public OAuth2AccessToken enhance(OAuth2AccessToken accessToken, OAuth2Authentication authentication) {
if(accessToken instanceof DefaultOAuth2AccessToken){
DefaultOAuth2AccessToken token = (DefaultOAuth2AccessToken) accessToken;
token.setValue(getToken());
//使用DefaultExpiringOAuth2RefreshToken类生成refresh_token，自带过期时间，否则不生效，refresh_token一直有效
DefaultExpiringOAuth2RefreshToken refreshToken = (DefaultExpiringOAuth2RefreshToken)token.getRefreshToken();
//OAuth2RefreshToken refreshToken = token.getRefreshToken();
if(refreshToken instanceof DefaultExpiringOAuth2RefreshToken){
token.setRefreshToken(new DefaultExpiringOAuth2RefreshToken(getToken(), refreshToken.getExpiration()));
}
Map<String, Object> additionalInformation = Maps.newHashMap();
additionalInformation.put("client_id", authentication.getOAuth2Request().getClientId());
//添加额外配置信息
token.setAdditionalInformation(additionalInformation);
return token;
}
return accessToken;
}
经测试上面的方案完美解决自定义token生成refresh_token永不过期问题。。。