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优化文档 [将权限数据放在缓存里] 示例

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click33 2024-08-05 15:50:53 +08:00
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sa-token-doc/fun/jur-cache.md
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@ -11,34 +11,43 @@
@Component @Component
public class StpInterfaceImpl implements StpInterface { public class StpInterfaceImpl implements StpInterface {
// 返回一个账号所拥有的权限码集合 // 返回一个账号所拥有的权限码集合
@Override @Override
public List<String> getPermissionList(Object loginId, String loginType) { @SuppressWarnings("unchecked")
public List<String> getPermissionList(Object loginId, String loginType) {
// 1. 声明权限码集合
List<String> permissionList = new ArrayList<>(); // 1. 声明权限码集合
List<String> list = new ArrayList<>();
// 2. 遍历角色列表，查询拥有的权限码
for (String roleId : getRoleList(loginId, loginType)) { // 2. 遍历角色列表，查询拥有的权限码
SaSession roleSession = SaSessionCustomUtil.getSessionById("role-" + roleId); for (String roleId : getRoleList(loginId, loginType)) {
List<String> list = roleSession.get("Permission_List", () -> { List<String> permissionList = (List<String>)SaManager.getSaTokenDao().getObject("satoken:role-find-permission:" + roleId);
return ...; // 从数据库查询这个角色所拥有的权限列表 if(permissionList == null) {
}); // 从数据库查询这个角色 id 所拥有的权限列表
permissionList.addAll(list); permissionList = ...
} // 查好后，set 到缓存中
SaManager.getSaTokenDao().setObject("satoken:role-find-permission:" + roleId, permissionList, 60 * 60 * 24 * 30);
// 3. 返回权限码集合 }
return permissionList; list.addAll(permissionList);
} }
// 返回一个账号所拥有的角色标识集合 // 3. 返回权限码集合
@Override return list;
public List<String> getRoleList(Object loginId, String loginType) { }
SaSession session = StpUtil.getSessionByLoginId(loginId);
return session.get("Role_List", () -> { // 返回一个账号所拥有的角色标识集合
return ...; // 从数据库查询这个账号id拥有的角色列表 @Override
}); @SuppressWarnings("unchecked")
} public List<String> getRoleList(Object loginId, String loginType) {
List<String> roleList = (List<String>)SaManager.getSaTokenDao().getObject("satoken:loginId-find-role:" + loginId);
if(roleList == null) {
// 从数据库查询这个账号id拥有的角色列表，
roleList = ...
// 查好后，set 到缓存中
SaManager.getSaTokenDao().setObject("satoken:loginId-find-role:" + loginId, roleList, 60 * 60 * 24 * 30);
}
return roleList;
}
} }
``` ```