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循环遍历获取 redis key实现在用户在线,性能不高，尤其是用户数量多的情况容易导致其他的redis线程卡死.这边用 redis hash维护一个现在用户，只要简单的实现用户同步就可以了.提交了性能

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This commit is contained in:
金威正
2020-08-25 13:24:27 +08:00
committed by Gitee
parent fa5596bb20
commit 27c8d2b7f0
3 changed files with 80 additions and 32 deletions
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82
ruoyi-admin/src/main/java/com/ruoyi/web/controller/monitor/SysUserOnlineController.java
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@ -1,9 +1,7 @@
package com.ruoyi.web.controller.monitor;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.List;
import java.util.*;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.security.access.prepost.PreAuthorize;
import org.springframework.web.bind.annotation.DeleteMapping;
@ -42,39 +40,56 @@ public class SysUserOnlineController extends BaseController
@GetMapping("/list")
public TableDataInfo list(String ipaddr, String userName)
{
Collection<String> keys = redisCache.keys(Constants.LOGIN_TOKEN_KEY + "*");
// 一次性取出 在线用户
Map<String, Object> maps = redisCache.getCacheMap(Constants.LOGIN_TOKEN_KEY_ONLINE);
List<String> delList=new ArrayList<>();
List<SysUserOnline> userOnlineList = new ArrayList<SysUserOnline>();
for (String key : keys)
{
LoginUser user = redisCache.getCacheObject(key);
if (StringUtils.isNotEmpty(ipaddr) && StringUtils.isNotEmpty(userName))
{
if (StringUtils.equals(ipaddr, user.getIpaddr()) && StringUtils.equals(userName, user.getUsername()))
Iterator<Map.Entry<String, Object>> it = maps.entrySet().iterator();
while(it.hasNext()){
Map.Entry<String, Object> entry = it.next();
LoginUser user=(LoginUser) entry.getValue();
boolean removed = true;
if (user.getExpireTime()<=System.currentTimeMillis()){
it.remove();
removed=false;
delList.add(entry.getKey());
}
if (removed){
if (StringUtils.isNotEmpty(ipaddr) && StringUtils.isNotEmpty(userName))
{
userOnlineList.add(userOnlineService.selectOnlineByInfo(ipaddr, userName, user));
if (StringUtils.equals(ipaddr, user.getIpaddr()) && StringUtils.equals(userName, user.getUsername()))
{
userOnlineList.add(userOnlineService.selectOnlineByInfo(ipaddr, userName, user));
}
}
else if (StringUtils.isNotEmpty(ipaddr))
{
if (StringUtils.equals(ipaddr, user.getIpaddr()))
{
userOnlineList.add(userOnlineService.selectOnlineByIpaddr(ipaddr, user));
}
}
else if (StringUtils.isNotEmpty(userName) && StringUtils.isNotNull(user.getUser()))
{
if (StringUtils.equals(userName, user.getUsername()))
{
userOnlineList.add(userOnlineService.selectOnlineByUserName(userName, user));
}
}
else
{
userOnlineList.add(userOnlineService.loginUserToUserOnline(user));
}
}
else if (StringUtils.isNotEmpty(ipaddr))
{
if (StringUtils.equals(ipaddr, user.getIpaddr()))
{
userOnlineList.add(userOnlineService.selectOnlineByIpaddr(ipaddr, user));
}
}
else if (StringUtils.isNotEmpty(userName) && StringUtils.isNotNull(user.getUser()))
{
if (StringUtils.equals(userName, user.getUsername()))
{
userOnlineList.add(userOnlineService.selectOnlineByUserName(userName, user));
}
}
else
{
userOnlineList.add(userOnlineService.loginUserToUserOnline(user));
}
}
};
Collections.reverse(userOnlineList);
userOnlineList.removeAll(Collections.singleton(null));
if (!delList.isEmpty()){
String[] delTokens=new String[delList.size()];
redisCache.delCacheMapKey(Constants.LOGIN_TOKEN_KEY_ONLINE,delList.toArray(delTokens));
}
return getDataTable(userOnlineList);
}
@ -86,7 +101,10 @@ public class SysUserOnlineController extends BaseController
@DeleteMapping("/{tokenId}")
public AjaxResult forceLogout(@PathVariable String tokenId)
{
redisCache.deleteObject(Constants.LOGIN_TOKEN_KEY + tokenId);
redisCache.deleteObject(tokenId);
redisCache.delCacheMapKey(Constants.LOGIN_TOKEN_KEY_ONLINE , tokenId);
return AjaxResult.success();
}
}