Java后端长时间无操作自动退出
shyの程序猿 人气:0Java后端长时间无操作自动退出
使用session(最优)
设置session的过期时间,长时间(例如30分钟)无请求就会自动清除,达到长时间无操作自动退出的目的
server: port: 9201 session: timeout: 1800
使用拦截器
实现思路:每次请求后台时,在拦截器中刷新session,设置session时间为30分钟,这样请求每次进来都会重新设置session的过期时间
对于登陆长时间未操作超时退出问题
首先设置一个拦截器
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拦截器 * * @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; // 如果不为'鉴定是否锁定的请求',将用户的请求时间放置session if (!httpRequest.getServletPath().equals( "/session/checkLastPostTime.action")) { HttpSession session = httpRequest.getSession(true); session.setAttribute("lastPostTime", System.currentTimeMillis()); } // 执行之后的过滤 filterChain.doFilter(request, response); } /* * (non-Javadoc) * * @see javax.servlet.Filter#init(javax.servlet.FilterConfig) */ @Override public void init(FilterConfig arg0) throws ServletException { } }
然后进行配置文件
<?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处理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处理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 { /** * 鉴权用户停止操作的时间是否超过20分钟 * * @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; } }
页面以及调用
$(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"); } }
页面
<div id="checkLastPostTimeDialog" class="easyui-dialog" style="width:400px;height:200px;padding:20px;" data-options="title:'已锁定',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 >账 号:</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 码:</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();" >注销</a> </div>
以上为个人经验,希望能给大家一个参考,也希望大家多多支持。
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