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用ssh實現的在線考試系統，內附詳細說明，包括表結構，和Oracle數據庫導入文件，powerdsigner數據庫pdm設計文件，可以根據pdm文件生成你自己相應數據庫的表生成文件。
系統實現：用戶填寫個人信息，進入考試隨機生成20(可修改)道單選，20道多選題目，提交后自動記分，并顯示排名。
代碼片段和文件信息
package?com.xl.exam.action;
import?java.net.Inet4Address;
import?java.net.InetAddress;
import?java.net.NetworkInterface;
import?java.net.SocketException;
import?java.util.Enumeration;
import?java.util.List;
import?java.util.Map;
import?javax.servlet.http.HttpServletRequest;
import?javax.servlet.http.HttpServletResponse;
import?org.apache.commons.lang3.StringUtils;
import?org.apache.struts2.StrutsStatics;
?
import?com.xl.exam.dto.UserDTO;
import?com.opensymphony.xwork2.ActionContext;
import?com.opensymphony.xwork2.ActionSupport;
/**
?*?公共Action
?*?
?*?@author:?louzi
?*?@Date:?2018.05.02
?*/
public?class?baseAction?extends?ActionSupport?{
public?List?validList;
/**
?*?序列號
?*/
private?static?final?long?serialVersionUID?=?1L;
/**
?*?獲得sesstion
?*?
?*?@return
?*/
public?Mapject>?getSession（）?{
Mapject>?session?=?ActionContext.getContext（）.getSession（）;
return?session;
}
/**
?*?獲得request
?*/
public?static?HttpServletRequest?getRequest（）?{
ActionContext?ctx?=?ActionContext.getContext（）;
HttpServletRequest?request?=?（HttpServletRequest）?ctx.get（StrutsStatics.HTTP_REQUEST）;
return?request;
}
/**
?*?獲得response
?*/
public?static?HttpServletResponse?getResponse（）?{
ActionContext?ctx?=?ActionContext.getContext（）;
HttpServletResponse?response?=?（HttpServletResponse）?ctx.get（StrutsStatics.HTTP_RESPONSE）;
return?response;
}
/**
?*?從sesstion獲得當前登錄用戶
?*?
?*?@return
?*/
public?UserDTO?getUser（）?{
UserDTO?userDTO?=?null;
if?（getSession（）.get（“userSession“）?!=?null）?{
userDTO?=?（UserDTO）?getSession（）.get（“userSession“）;
}
return?userDTO;
}
public?static?String?getUserIp（）?{
??String?ipFromNginx?=?getHeader（getRequest（）?“X-Real-IP“）;
??return?StringUtils.isEmpty（ipFromNginx）???getRequest（）.getRemoteAddr（）?:?ipFromNginx;
?}
private?static?String?getHeader（HttpServletRequest?request?String?headName）?{
String?value?=?request.getHeader（headName）;
return?!StringUtils.isBlank（value）
&&?!“unknown“.equalsIgnoreCase（value）???value?:?““;
}
public?static?String?getLoalhostIP（）{
???? String?ip1?=?““;
???? try?{
????????
????????????Enumeration?enumeration=NetworkInterface.getNetworkInterfaces（）;
????????????InetAddress?ip=null;
????????????while（enumeration.hasMoreElements（））{
????????????????NetworkInterface?netInterface?=?（NetworkInterface）?enumeration.nextElement（）;
????????????????Enumeration?addresses?=?netInterface.getInetAddresses（）;
????????????????while?（addresses.hasMoreElements（））?{
????????????????????ip?=?（InetAddress）?addresses.nextElement（）;
????????????????????if?（ip?!=?null?&&?ip?instanceof?Inet4Address）{
???????????????????? if?（“127.0.0.1“.equals（ip.getHostAddress（）））?{
continue;
}
???????????????????? ip1=ip.getHostAddress（）;
????????????????????????
????????????????????}?
????????????????}
????????????}
????????}? ?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2018-07-03?16:44??examDemo\
?????文件????????4702??2018-05-02?10:57??examDemo\crebas.sql
?????文件?????????245??2018-07-03?16:15??examDemo\crebas?猔種.txt
?????目錄???????????0??2018-07-03?15:48??examDemo\exam\
?????文件??????145141??2018-05-02?11:09??examDemo\exam.pdm
?????文件?????????529??2018-07-03?15:06??examDemo\exam\.classpath
?????目錄???????????0??2018-07-03?15:06??examDemo\exam\.myeclipse\
?????文件?????????285??2018-07-03?15:06??examDemo\exam\.myme
?????文件????????1747??2018-07-03?15:38??examDemo\exam\.project
?????目錄???????????0??2018-07-03?15:48??examDemo\exam\.settings\
?????文件?????????500??2018-07-03?15:06??examDemo\exam\.settings\.jsdtscope
?????文件??????????88??2018-07-03?15:13??examDemo\exam\.settings\org.eclipse.core.resources.prefs
?????文件?????????395??2018-07-03?15:06??examDemo\exam\.settings\org.eclipse.jdt.core.prefs
?????文件?????????450??2018-07-03?15:06??examDemo\exam\.settings\org.eclipse.wst.common.component
?????文件?????????252??2018-07-03?15:06??examDemo\exam\.settings\org.eclipse.wst.common.project.facet.core.xm
?????文件??????????49??2018-07-03?15:06??examDemo\exam\.settings\org.eclipse.wst.jsdt.ui.superType.container
?????文件???????????6??2018-07-03?15:06??examDemo\exam\.settings\org.eclipse.wst.jsdt.ui.superType.name
?????目錄???????????0??2018-07-03?15:48??examDemo\exam\src\
?????文件????????4761??2018-07-03?15:47??examDemo\exam\src\applicationContext.xm
?????目錄???????????0??2018-07-03?15:48??examDemo\exam\src\com\
?????目錄???????????0??2018-07-03?15:48??examDemo\exam\src\com\xl\
?????目錄???????????0??2018-07-03?15:48??examDemo\exam\src\com\xl\exam\
?????目錄???????????0??2018-07-03?15:48??examDemo\exam\src\com\xl\exam\action\
?????文件????????3259??2018-07-03?15:35??examDemo\exam\src\com\xl\exam\action\ba
?????文件????????2265??2018-07-03?15:35??examDemo\exam\src\com\xl\exam\action\LoginAction.java
?????文件????????4986??2018-07-03?15:35??examDemo\exam\src\com\xl\exam\action\QuestionsAction.java
?????文件????????3237??2018-07-03?15:23??examDemo\exam\src\com\xl\exam\action\Test.java
?????目錄???????????0??2018-07-03?15:48??examDemo\exam\src\com\xl\exam\dao\
?????文件?????????823??2018-07-03?15:31??examDemo\exam\src\com\xl\exam\dao\ba
?????目錄???????????0??2018-07-03?15:48??examDemo\exam\src\com\xl\exam\dao\impl\
?????文件????????6263??2018-07-03?15:35??examDemo\exam\src\com\xl\exam\dao\impl\ba
............此處省略3434個文件信息
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