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Java后端長時間無操作自動退出的實現(xiàn)方式

更新時間：2022年01月07日 08:44:51 作者：shyの程序猿

這篇文章主要介紹了Java后端長時間無操作自動退出的實現(xiàn)方式，具有很好的參考價值，希望對大家有所幫助。如有錯誤或未考慮完全的地方，望不吝賜教

Java后端長時間無操作自動退出

使用session(最優(yōu))

設(shè)置session的過期時間,長時間(例如30分鐘)無請求就會自動清除,達(dá)到長時間無操作自動退出的目的

server:
port: 9201
session:
timeout: 1800

使用攔截器

實現(xiàn)思路:每次請求后臺時,在攔截器中刷新session,設(shè)置session時間為30分鐘,這樣請求每次進(jìn)來都會重新設(shè)置session的過期時間

對于登陸長時間未操作超時退出問題

首先設(shè)置一個攔截器

import java.io.IOException;?
import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpSession;
?
/**
?* 全局session攔截器
?*?
?* @author shenyanwei
?* @date:2016年11月18日 下午1:33:40
?* @version
?*/
public class SessionFilter implements Filter {
?
?? ?/*
?? ? * (non-Javadoc)
?? ? *?
?? ? * @see javax.servlet.Filter#destroy()
?? ? */
?? ?@Override
?? ?public void destroy() {
?? ?}
?
?? ?/*
?? ? * (non-Javadoc)
?? ? *?
?? ? * @see javax.servlet.Filter#doFilter(javax.servlet.ServletRequest,
?? ? * javax.servlet.ServletResponse, javax.servlet.FilterChain)
?? ? */
?? ?@Override
?? ?public void doFilter(ServletRequest request, ServletResponse response,
?? ??? ??? ?FilterChain filterChain) throws IOException, ServletException {
?? ??? ?HttpServletRequest httpRequest = (HttpServletRequest) request;
?? ??? ?// 如果不為'鑒定是否鎖定的請求',將用戶的請求時間放置session
?? ??? ?if (!httpRequest.getServletPath().equals(
?? ??? ??? ??? ?"/session/checkLastPostTime.action")) {
?? ??? ??? ?HttpSession session = httpRequest.getSession(true);
?? ??? ??? ?session.setAttribute("lastPostTime", System.currentTimeMillis());
?? ??? ?}
?? ??? ?// 執(zhí)行之后的過濾
?? ??? ?filterChain.doFilter(request, response);?
?? ?}?
?? ?/*
?? ? * (non-Javadoc)
?? ? *?
?? ? * @see javax.servlet.Filter#init(javax.servlet.FilterConfig)
?? ? */
?? ?@Override
?? ?public void init(FilterConfig arg0) throws ServletException {?
?? ?}?
}

然后進(jìn)行配置文件

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE struts PUBLIC
? ? "-//Apache Software Foundation//DTD Struts Configuration 2.1.7//EN"
? ? "http://struts.apache.org/dtds/struts-2.1.7.dtd">
<struts>
?? ?<!-- 全局session處理action -->
?? ?<package name="session" namespace="/session" extends="json-default">
?? ??? ?<action name="*" class="sessionAction" method="{1}">
?? ??? ??? ?<result name="json" type="json">
?? ??? ??? ??? ?<param name="contentType">text/html</param>
?? ??? ??? ??? ?<param name="ignoreHierarchy">false</param>
?? ??? ??? ?</result>
?? ??? ?</action>
?? ?</package>
</struts>

Action：

import javax.servlet.http.HttpSession;?
import org.apache.struts2.ServletActionContext;
import org.springframework.context.annotation.Scope;
import org.springframework.stereotype.Controller;?
import com.opensymphony.xwork2.ActionContext;
import com.opensymphony.xwork2.ActionSupport;
?
/**
?* 全局session處理action
?*?
?* @author shenyanwei
?* @date:2016年11月18日 下午1:59:56
?* @version
?*/
@Controller
@Scope("prototype")
@SuppressWarnings("all")
public class SessionAction extends ActionSupport {
?? ?/**
?? ? * 鑒權(quán)用戶停止操作的時間是否超過20分鐘
?? ? *?
?? ? * @return
?? ? */
?? ?public String checkLastPostTime() {
?? ??? ?HttpSession session = ServletActionContext.getRequest().getSession();
?? ??? ?Object attribute = session.getAttribute("lastPostTime");
?? ??? ?ActionContext.getContext().getValueStack().push(false);
?? ??? ?if (null != attribute) {
?? ??? ??? ?Long lastPostTime = (Long) attribute;
?? ??? ??? ?long currentTimeMillis = System.currentTimeMillis();
?? ??? ??? ?if (1200000 <= (currentTimeMillis - lastPostTime)) {
?? ??? ??? ??? ?ActionContext.getContext().getValueStack().push(true);
?? ??? ??? ?}
?? ??? ?}
?? ??? ?return ReturnType.JSON;
?? ?}
}

頁面以及調(diào)用

$(function() {
? ? ??
? ? ? ? checkLastPostTime();
? ? });
var checkLastPostTimeInterval;?
?? ?function checkLastPostTime(){
?? ??? ?checkLastPostTimeInterval = window.setInterval(function() {
?? ??? ??? ?$.post("${pageContext.request.contextPath}/session/checkLastPostTime.action",{},
?? ??? ??? ??? ?function(result){
?? ??? ??? ??? ??? ?if (result) {
?? ??? ??? ??? ??? ??? ?window.clearInterval(checkLastPostTimeInterval);
?? ??? ??? ??? ??? ??? ?$("#checkLastPostTimeDialogError").html(" ");
?? ??? ??? ??? ??? ??? ?$("#checkLastPostTimeDialog").dialog('open');
?? ??? ??? ??? ??? ?}
?? ??? ??? ??? ?}
?? ??? ??? ?,"json");
?? ??? ?}, 300000);
?? ?}
?? ?
?? ?function checkLastPostTimeDialogFormSumbit(){
?? ??? ?if($('#checkLastPostTimeDialogForm').form('validate')){
?? ??? ??? ?$.post("${pageContext.request.contextPath}/jsonLogin.action",{
?? ??? ??? ??? ??? ?username:$("#checkLastPostTimeDialogFormUserName").val(),
?? ??? ??? ??? ??? ?password:$("#checkLastPostTimeDialogFormPassword").textbox('getValue')
?? ??? ??? ??? ?},
?? ??? ??? ??? ?function(result){
?? ??? ??? ??? ??? ?if (result.errorMsg) {
?? ??? ??? ??? ??? ??? ?$("#checkLastPostTimeDialogError").html(result.errorMsg);
?? ??? ??? ??? ??? ?} else {
?? ??? ??? ??? ??? ??? ?$("#checkLastPostTimeDialog").dialog('close');
?? ??? ??? ??? ??? ??? ?checkLastPostTime();
?? ??? ??? ??? ??? ?}
?? ??? ??? ??? ?}
?? ??? ??? ?,"json");
?? ??? ?}
?? ?}

頁面

<div id="checkLastPostTimeDialog" class="easyui-dialog" style="width:400px;height:200px;padding:20px;" data-options="title:'已鎖定',border:false,closable:false,draggable:false,resizable:false,closed:true,modal:true,tools:'#checkLastPostTimeDialogTool'">
?? ??? ?<form id="checkLastPostTimeDialogForm" method="post">
?? ??? ??? ?<div id="checkLastPostTimeDialogError" style="color:red;position:absolute;right:20px;" align="right" ></div>
?? ??? ??? ?<table width="100%" >
?? ??? ??? ??? ?<tr>
?? ??? ??? ??? ??? ?<td >賬 ? ?號:</td>
?? ??? ??? ??? ??? ?<td height="40px" ?align="left"><shiro:principal /><input id="checkLastPostTimeDialogFormUserName" type="hidden" ? ?style="width:220px;height:30px;line-height:30px;border-color:#5b97db;border-width: 1px;border-style: solid;" name="username" value="<shiro:principal />" /></td>
?? ??? ??? ??? ?</tr>
?? ??? ??? ??? ?<tr>
?? ??? ??? ??? ??? ?<td >密 ? ?碼:</td>
?? ??? ??? ??? ??? ?<td height="40px" ?align="left"><input id="checkLastPostTimeDialogFormPassword" required="true" class="easyui-textbox" type="password" style="width:220px;height:30px;line-height:30px;border-color:#5b97db;border-width: 1px;border-style: solid;" name="password" value="" /></td>
?? ??? ??? ??? ?</tr>
?? ??? ??? ??? ?<tr>
?? ??? ??? ??? ??? ?<td colspan="2" align="center">
?? ??? ??? ??? ??? ??? ?<input class="login" ?type="button" οnclick="checkLastPostTimeDialogFormSumbit();" style="width:110px;height:33px;border:0" value="" />
?? ??? ??? ??? ??? ?</td>
?? ??? ??? ??? ?</tr>
?? ??? ??? ?</table>
?? ??? ?</form>
?? ?</div>
?? ?<div id="checkLastPostTimeDialogTool">
?? ??? ?<a href="#" style="width:30px;text-decoration:underline;line-height:16px;font-size:12px;" οnclick="logout();" >注銷</a>
?? ?</div>

以上為個人經(jīng)驗，希望能給大家一個參考，也希望大家多多支持腳本之家。

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