Spring Security是一个能够为基于Spring的企业应用系统提供声明式的安全访问控制解决方案的安全框架。它提供了一组可以在Spring应用上下文中配置的Bean，充分利用了Spring IoC，DI（控制反转Inversion of Control ,DI:Dependency Injection 依赖注入）和AOP（面向切面编程）功能，为应用系统提供声明式的安全访问控制功能，减少了为企业系统安全控制编写大量重复代码的工作。
需要让接口扫描到这个类
/
@Component
public class UserDetailServiceImpl implements UserDetailsService {
//远程调用dubbo提供的服务 但是此时还没有
@Reference
public SellerService sellerService;
@Override
public UserDetails loadUserByUsername(String username) throws UsernameNotFoundException {
TbSeller seller = sellerService.findOne(username);
System.out.println(seller);
//没找到用户 或者用户没有通过审核
if (seller == null || !"1".equals(seller.getStatus())) {
return null;
}
ArrayList list = new ArrayList<>();
list.add(new SimpleGrantedAuthority("ROLE_SELLER"));
return new User(username, seller.getPassword(), list);
}
}
config/fdfs_client.conf
# connect timeout in seconds
# default value is 30s
connect_timeout=30
# network timeout in seconds
# default value is 30s
network_timeout=60
# the base path to store log files
base_path=/home/fastdfs
# tracker_server can ocur more than once, and tracker_server format is
# "host:port", host can be hostname or ip address
tracker_server=172.16.224.128:22122
#standard log level as syslog, case insensitive, value list:
### emerg for emergency
### alert
### crit for critical
### error
### warn for warning
### notice
### info
### debug
log_level=info
# if use connection pool
# default value is false
# since V4.05
use_connection_pool = false
# connections whose the idle time exceeds this time will be closed
# unit: second
# default value is 3600
# since V4.05
connection_pool_max_idle_time = 3600
# if load FastDFS parameters from tracker server
# since V4.05
# default value is false
load_fdfs_parameters_from_tracker=false
# if use storage ID instead of IP address
# same as tracker.conf
# valid only when load_fdfs_parameters_from_tracker is false
# default value is false
# since V4.05
use_storage_id = false
# specify storage ids filename, can use relative or absolute path
# same as tracker.conf
# valid only when load_fdfs_parameters_from_tracker is false
# since V4.05
storage_ids_filename = storage_ids.conf
#HTTP settings
http.tracker_server_port=80
#use "#include" directive to include HTTP other settiongs
##include http.conf
public class ReverseWords {
/**
* 题目：颠倒一个句子中的词的顺序。比如： I am a student颠倒后变成：student a am I.词以空格分隔。
* 要求：
* 1.实现速度最快,移动最少
* 2.不能使用String的方法如split,indexOf等等。
* 解答：两次翻转。
*/
publ
oracle外部表是只允许只读访问，不能进行DML操作，不能创建索引，可以对外部表进行的查询，连接，排序，创建视图和创建同义词操作。
you can select, join, or sort external table data. You can also create views and synonyms for external tables. Ho
发现一个老外写的不错的jquery插件，可以实现将HTML
表格导出为excel,pdf等格式，
地址在：
https://github.com/kayalshri/
下面看个例子，实现导出表格到excel,pdf
<html>
<head>
<title>Export html table to excel an
