/**
* 将cookie保存到response中
*
* @param ac
* @param value
* @param removed
*/
private void addCookieToResponse(AttributeConfigDO ac, String value, boolean removed) {
String name = ac.getClientKey();
String domain = ac.getDomain();
// 删除cookie时将maxAge设为0
int maxAge = (removed || value == null) ? 0 : ac.getLifeCycle();
String path = ac.getCookiePath();
boolean httpOnly = ac.isHttpOnly();
addCookieToResponse(name, value, domain, maxAge, path, httpOnly);
}
/**
* 从cookie里取
*
* @param ac
* @return
*/
private AttributeDO getAttributeFromCookies(AttributeConfigDO ac) {
String clientKey = ac.getClientKey();
String cookieValue = cookies.get(clientKey);
String v = decodeValue(cookieValue, ac);
AttributeDO attribute = new AttributeDO(ac, v);
return attribute;
}
@Override
public void setAttribute(AttributeConfigDO ac, Object value) {
String key = ac.getKey();
// XXX 注意，这里调用了value上的toString()，而不是保存value对象本身
String v = value == null ? null : value.toString();
AttributeDO attribute = new AttributeDO(ac, v);
attributes.put(key, attribute);
dirty.add(key); // 标记修改
}
@Override
public Object getAttribute(AttributeConfigDO ac) {
String key = ac.getKey();
// 先从已解析中获取
AttributeDO attribute = attributes.get(key);
if (attribute == null) {
attribute = getAttributeFromCookies(ac);
// 保存到已解析map
attributes.put(key, attribute);
}
return attribute.getValue();
}
/**
* 编码
*
* @param value
* @param ac
* @return
*/
private String encodeValue(String value, AttributeConfigDO ac) {
if (StringUtils.isEmpty(value)) {
return value;
}
if (ac.isEncrypt()) {
value = BlowfishUtils.encryptBlowfish(value, CRYPT_KEY);
}
try {
value = URLEncoder.encode(value, "UTF-8");
} catch (Exception e) {
log.error("编码失败, value=" + value, e);
// 编码失败时，返回错误标记，且不保存到cookies中
return ERROR;
}
return value;
}
/**
* 解码
*
* @param value
* @param ac
* @return
*/
private String decodeValue(String value, AttributeConfigDO ac) {
if (value == null) {
return value;
}
try {
value = URLDecoder.decode(value, "UTF-8");
} catch (Exception e) {
// logger.error("解码失败", e);
// 解码失败时直接返回，不继续解析
return value;
}
if (ac.isEncrypt()) {
value = BlowfishUtils.decryptBlowfish(value, CRYPT_KEY);
}
return value;
}