198 lines
8.2 KiB
C#
198 lines
8.2 KiB
C#
using System;
|
||
using System.Collections.Generic;
|
||
using System.Linq;
|
||
using System.Web;
|
||
using Song.ServiceInterfaces;
|
||
using Song.Entities;
|
||
using System.Text;
|
||
using WeiSha.Common;
|
||
using System.Xml;
|
||
namespace Song.Site.Ajax
|
||
{
|
||
/// <summary>
|
||
/// ExamPager1 的摘要说明
|
||
/// </summary>
|
||
public class ExamPager : IHttpHandler
|
||
{
|
||
//试卷id，考试id,学生id
|
||
private int tpid = WeiSha.Common.Request.Form["tpid"].Int32 ?? 0;
|
||
private int examid = WeiSha.Common.Request.Form["examid"].Int32 ?? 0;
|
||
private int stid = WeiSha.Common.Request.Form["stid"].Int32 ?? 0;
|
||
public HttpResponse Response;
|
||
public void ProcessRequest(HttpContext context)
|
||
{
|
||
context.Response.ContentType = "text/plain";
|
||
context.Response.ContentEncoding = System.Text.Encoding.UTF8;
|
||
context.Response.Charset = "utf-8";
|
||
Response = context.Response;
|
||
//获取答题信息
|
||
Song.Entities.ExamResults exr = Business.Do<IExamination>().ResultSingleForCache(examid, tpid, stid);
|
||
string json = string.Empty;
|
||
if (exr == null)
|
||
{
|
||
//第一次，随机出题
|
||
json = randomJson();
|
||
}
|
||
else
|
||
{
|
||
//如果已经交过卷，输出2
|
||
json = exr.Exr_IsSubmit ? "2" : resultJson(exr);
|
||
// 根据试卷id查找试卷的及格分
|
||
int tp = Business.Do<ITestPaper>().PagerSingle(exr.Tp_Id).Tp_PassScore;
|
||
if (exr.Exr_Score < tp && exr.Exr_IsSubmit)
|
||
{
|
||
json = randomJson();
|
||
}
|
||
}
|
||
Response.Write(json);
|
||
Response.End();
|
||
}
|
||
#region 输出json
|
||
/// <summary>
|
||
/// 随机出题
|
||
/// </summary>
|
||
/// <returns></returns>
|
||
private string randomJson()
|
||
{
|
||
//取果是第一次打开，则随机生成试题，此为获取试卷
|
||
Song.Entities.TestPaper pager = Business.Do<ITestPaper>().PagerSingle(tpid);
|
||
Dictionary<TestPaperItem, Questions[]> dics = Business.Do<ITestPaper>().Putout(pager); //生成试卷
|
||
//
|
||
List<Questions> list = new List<Questions>(); //缓存
|
||
string json = "[";
|
||
foreach (var di in dics)
|
||
{
|
||
//++++++++按题型输出
|
||
Song.Entities.TestPaperItem pi = (Song.Entities.TestPaperItem)di.Key; //试题类型
|
||
Song.Entities.Questions[] ques = (Song.Entities.Questions[])di.Value; //当前类型的试题
|
||
int type = (int)pi.TPI_Type; //试题类型
|
||
int count = ques.Length; //试题数目
|
||
float num = (float)pi.TPI_Number; //占用多少分
|
||
if (count < 1) continue;
|
||
string tpiJosn = "{'type':'" + type + "','count':'" + count + "','number':'" + num + "',";
|
||
tpiJosn += "'ques':[";
|
||
tpiJosn = tpiJosn.Replace("'", "\"");
|
||
//++++++++试题输出
|
||
string quesJson = string.Empty;
|
||
for (int n = 0; n < ques.Length; n++)
|
||
{
|
||
quesJson += getQuesJson(ques[n]) + ",";
|
||
list.Add(ques[n]); //存入列表，用于缓存存储
|
||
}
|
||
if (quesJson.EndsWith(",")) quesJson = quesJson.Substring(0, quesJson.Length - 1);
|
||
//--------试题输出结束
|
||
tpiJosn += quesJson + "]}";
|
||
json += tpiJosn + ",";
|
||
//--------按题型输出结束
|
||
}
|
||
if (json.EndsWith(",")) json = json.Substring(0, json.Length - 1);
|
||
json += "]";
|
||
//缓存
|
||
if (list.Count > 0)
|
||
{
|
||
string uid = string.Format("ExamResults：{0}-{1}-{2}", examid, tpid, stid); //缓存的uid
|
||
Song.Entities.Examination exam = Business.Do<IExamination>().ExamSingle(examid);
|
||
if (exam != null)
|
||
{
|
||
Random rn = new Random(stid);
|
||
Business.Do<IQuestions>().CacheAdd(list.ToArray<Song.Entities.Questions>(), exam.Exam_Span + rn.Next(10), uid);
|
||
}
|
||
}
|
||
return json;
|
||
}
|
||
/// <summary>
|
||
/// 如果已经提交过答案，通过提交的答题返回试题
|
||
/// </summary>
|
||
/// <param name="exr"></param>
|
||
/// <returns></returns>
|
||
private string resultJson(Song.Entities.ExamResults exr)
|
||
{
|
||
XmlDocument resXml = new XmlDocument();
|
||
resXml.XmlResolver = null;
|
||
resXml.LoadXml(exr.Exr_Results, false);
|
||
string json = "[";
|
||
XmlNodeList ques = resXml.GetElementsByTagName("ques");
|
||
for (int i = 0; i < ques.Count;i++ )
|
||
{
|
||
XmlNode node = ques[i];
|
||
string type = node.Attributes["type"].Value;
|
||
string count = node.Attributes["count"].Value;
|
||
string num = node.Attributes["number"].Value;
|
||
string quesObj = "{";
|
||
quesObj += "'type':'" + type + "','count':'" + count + "','number':'" + num + "',";
|
||
quesObj += "'ques':[";
|
||
quesObj = quesObj.Replace("'", "\"");
|
||
for (int n = 0; n < node.ChildNodes.Count; n++)
|
||
{
|
||
int id = Convert.ToInt32(node.ChildNodes[n].Attributes["id"].Value);
|
||
Song.Entities.Questions q = null;
|
||
q = Business.Do<IQuestions>().QuesSingle4Cache(id);
|
||
if (q == null) q = Business.Do<IQuestions>().QuesSingle(id);
|
||
if (q == null) continue;
|
||
q.Qus_Number = (float)Convert.ToDouble(node.ChildNodes[n].Attributes["num"].Value);
|
||
q.Qus_Explain = "";
|
||
q.Qus_Answer = "";
|
||
string js = getQuesJson(q);
|
||
//如果是单选题，或多选题，或填空题
|
||
if (q.Qus_Type == 1 || q.Qus_Type == 2 || q.Qus_Type == 5)
|
||
quesObj += getAnserJson(q, js);
|
||
else
|
||
quesObj += js;
|
||
if (n < node.ChildNodes.Count - 1) quesObj += ",";
|
||
}
|
||
quesObj += "]";
|
||
quesObj += "}";
|
||
if (i < ques.Count - 1) quesObj += ",";
|
||
json += quesObj;
|
||
}
|
||
json += "]";
|
||
return json;
|
||
}
|
||
#endregion
|
||
|
||
/// <summary>
|
||
/// 输出主式题的Json
|
||
/// </summary>
|
||
/// <param name="q"></param>
|
||
/// <returns></returns>
|
||
private string getQuesJson(Song.Entities.Questions q)
|
||
{
|
||
//q = quesClear(q);
|
||
//q = Extend.Questions.TranText(q); //处理文件
|
||
//q.Qus_Title = q.Qus_Title.Replace("\"", """); //转换双引号
|
||
string quesJs = q.ToJson("Qus_ID,Qus_Title,Qus_Diff,Qus_Type,Qus_UID,Qus_Number", null);
|
||
//如果是单选题，或多选题，或填空题
|
||
if (q.Qus_Type == 1 || q.Qus_Type == 2 || q.Qus_Type == 5)
|
||
quesJs = getAnserJson(q, quesJs);
|
||
return quesJs;
|
||
}
|
||
/// <summary>
|
||
/// 试题选择项的Json输出
|
||
/// </summary>
|
||
/// <param name="q"></param>
|
||
/// <param name="json"></param>
|
||
/// <returns></returns>
|
||
private string getAnserJson(Song.Entities.Questions q, string json)
|
||
{
|
||
//当前试题的答案
|
||
Song.Entities.QuesAnswer[] ans = Business.Do<IQuestions>().QuestionsAnswer(q, null);
|
||
string ansStr = "[";
|
||
for (int i = 0; i < ans.Length; i++)
|
||
{
|
||
ans[i] = Extend.Questions.TranText(ans[i]);
|
||
ansStr += ans[i].ToJson();
|
||
if (i < ans.Length - 1) ansStr += ",";
|
||
}
|
||
ansStr += "]";
|
||
json = json.Replace("}", ",\"Answer\":" + ansStr + "}");
|
||
return json;
|
||
}
|
||
public bool IsReusable
|
||
{
|
||
get
|
||
{
|
||
return false;
|
||
}
|
||
}
|
||
}
|
||
} |