本文主要是介绍java结合wabacus实现session共享（第一版），希望对大家解决编程问题提供一定的参考价值，需要的开发者们随着小编来一起学习吧！
一、通过页面实现session共享（注：不适用于后台代码）
app1、app2同时部署在D:\apache-tomcat-8080\webapps下，类似于同时运行两个工程，而index1.jsp、index2.jsp分别放在app1、app2文件夹下面，期望：将app1工程的session共享给app2。内容如下：
app1/index1.jsp
<body>
<!-- 设置session值 -->
<%session.setAttribute("name", "lenian");String names = (String) session.getAttribute("name");application.setAttribute("globelSession",session);
%>您的用户名是app1:<%=names%>
</body>app2/index2.jsp
<body>
<!-- 获取session值 -->
您的用户名是application:<%=((HttpSession)application.getContext("/app1").getAttribute("globelSession")).getAttribute("name") %>
</body>二、spring boot与wabacus的结合（注：即使后台框架变了，原理也不会变）
/*** 登录认证*/
@Override
protected AuthenticationInfo doGetAuthenticationInfo(AuthenticationToken token) throws AuthenticationException {UsernamePasswordToken upToken = (UsernamePasswordToken) token;String username = upToken.getUsername();String password = "";if (upToken.getPassword() != null) {password = new String(upToken.getPassword());}User user = null;try {user = loginService.login(username, password);System.out.println("==============================启用SESSION共享（跨域）===============================");HttpSession session = request().getSession();session.setAttribute("userPA01", user.getPA01());session.setAttribute("userName", user.getUserName());session.setAttribute("phoneNumber", user.getPhonenumber());session.setAttribute("loginName", user.getLoginName());session.setAttribute("email", user.getEmail());request().getServletContext().setAttribute("globelSession", session);HttpSession session2 = (HttpSession)request().getServletContext().getAttribute("globelSession");Object id = session2.getAttribute("userPA01");System.out.println("======================================="+id+"=========================================");} catch (CaptchaException e) {throw new AuthenticationException(e.getMessage(), e);} catch (Exception e) {log.info("对用户[" + username + "]进行登录验证..验证未通过{}", e.getMessage());throw new AuthenticationException(e.getMessage(), e);}SimpleAuthenticationInfo info = new SimpleAuthenticationInfo(user, password, getName());return info;
}必备的方法：
/*** new一个request* * @return*/
public static HttpServletRequest request() {HttpServletRequest request = ((ServletRequestAttributes) RequestContextHolder.getRequestAttributes()).getRequest();return request;
}/*** 获取当前请求session* * @return*/
public static HttpSession getHttpSession() {return request().getSession();
}
在另一个工程下新建servlet测试类Global.java
protected void doGet(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException {ServletContext context = request.getServletContext().getContext("/app2");HttpSession session = (HttpSession) context.getAttribute("globelSession");System.out.println("跨域获取到的" + session.getAttribute("userPA01"));
}此时，需要修改web.xml文件，即：请求的入口
<!-- session跨域、共享（测试用） -->
<!-- <servlet><description>This is the description of my J2EE component</description><display-name>This is the display name of my J2EE component</display-name><servlet-name>Global</servlet-name><servlet-class>com.perfect.util.Global</servlet-class>
</servlet>
<servlet-mapping><servlet-name>Global</servlet-name><url-pattern>/*</url-pattern>
</servlet-mapping> -->当你启动app1工程并登录后，运行app2即可获取app1共享的session。
三、在wabacus中的用法，必须遵循wabacus的语法。如下：
新建一个拦截器DataSessionIntercetor.java，目的是用wabacus本身的方法set、get。
package com.perfect.interceptor;import javax.servlet.ServletContext;
import javax.servlet.http.HttpSession;import com.wabacus.system.ReportRequest;
import com.wabacus.system.intercept.AbsPageInterceptor;public class DataSessionIntercetor extends AbsPageInterceptor {public void doStart(ReportRequest rrequest) {System.out.println("您进入拦截器！");System.out.println("++++++++++++++++++获取共享session信息如下：++++++++++++++++++");ServletContext context = rrequest.getRequest().getServletContext().getContext("/");HttpSession session = (HttpSession) context.getAttribute("globelSession");if (null != session) {rrequest.getRequest().getSession().setAttribute("userid", session.getAttribute("userPA01"));rrequest.getRequest().getSession().setAttribute("username", session.getAttribute("userName"));rrequest.getRequest().getSession().setAttribute("phonenumber", session.getAttribute("phoneNumber"));rrequest.getRequest().getSession().setAttribute("email", session.getAttribute("email"));rrequest.getRequest().getSession().setAttribute("login_name", session.getAttribute("loginName"));System.out.println("当前用户ID(PA01)：" + session.getAttribute("userPA01"));rrequest.setAttribute("userid", rrequest.getRequest().getSession().getAttribute("userid"));rrequest.setAttribute("username", rrequest.getRequest().getSession().getAttribute("username"));rrequest.setAttribute("phonenumber", rrequest.getRequest().getSession().getAttribute("phonenumber"));rrequest.setAttribute("email", rrequest.getRequest().getSession().getAttribute("email"));rrequest.setAttribute("login_name", rrequest.getRequest().getSession().getAttribute("login_name"));}System.out.println("--------------------------------------------------------");}
}在xml页面上的使用方式：
<page id="interview" js="/webresources/script/validate.js,/zhaopin/js/sendData.js" interceptor="com.perfect.interceptor.DataSessionIntercetor"><tabpanel id="tp1" margin="10px" titlestyle="2"><report id="report1" title="面试待邀约信息" parenttitle="待邀约request{c}" rowselect="checkbox" type="editablelist2"><interceptor><imports><import>com.wabacus.util.*</import><import>com.java.util.*</import></imports><preaction><![CDATA[rrequest.setAttribute("txtgonghao",rrequest.getRequest().getSession().getAttribute("userid"));]]></preaction></interceptor><display></display><sql><value><![CDATA[select (SELECT COUNT(*) c FROM A05 a WHERE c10='待邀约') c,c01,c02,c03,c04,c05,c06,c07,c37,c41 from A05 where {#condition#} and c10='待邀约']]></value><condition name="txtgonghao" label="操作人" hidden="true" source="session{userid}"><value><![CDATA[c08 = '#data#']]></value></condition></sql><format></format></report></tabpanel>
</page>实现session共享的方法有很多，例如：redis、webservie等等，这只是其中的一种，希望能够帮到大家，谢谢！
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