124 lines
4.8 KiB
C#
124 lines
4.8 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Web;
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using WeiSha.Common;
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using Song.ServiceInterfaces;
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namespace Song.Site.Ajax
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{
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/// <summary>
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/// 获取试卷的信息
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/// </summary>
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public class TestPaper : IHttpHandler
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{
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//试卷id，考试id,学生id
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private int tpid = WeiSha.Common.Request.Form["tpid"].Int32 ?? 0;
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public void ProcessRequest(HttpContext context)
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{
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context.Response.ContentType = "text/plain";
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//Song.Entities.TestPaper tp = Business.Do<ITestPaper>().PagerSingle(tpid);
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context.Response.Write(randomJson());
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context.Response.End();
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}
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/// <summary>
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/// 随机出题
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/// </summary>
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/// <returns></returns>
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private string randomJson()
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{
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//取果是第一次打开，则随机生成试题，此为获取试卷
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Song.Entities.TestPaper tp = Business.Do<ITestPaper>().PagerSingle(tpid);
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//难度区间
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int diff1 = tp.Tp_Diff > tp.Tp_Diff2 ? (int)tp.Tp_Diff2 : (int)tp.Tp_Diff;
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int diff2 = tp.Tp_Diff > tp.Tp_Diff2 ? (int)tp.Tp_Diff : (int)tp.Tp_Diff2;
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//获取试题项
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Song.Entities.TestPaperItem[] tpi = Business.Do<ITestPaper>().GetItemForAll(tp);
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string json = "[";
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for (int i = 0; i < tpi.Length; i++)
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{
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Song.Entities.TestPaperItem pi = tpi[i];
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//类型，试题数目，该类型占多少分，
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int type = (int)pi.TPI_Type;
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int count = (int)pi.TPI_Count;
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float num = (float)pi.TPI_Number;
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if (count < 1) continue;
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string quesObj = "{";
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quesObj += "'type':" + type + ",'count':" + count + ",'number':" + num + ",";
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//当前类型的试题
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Song.Entities.Questions[] ques = Business.Do<IQuestions>().QuesRandom(tp.Org_ID, (int)tp.Sbj_ID, -1, -1, type, diff1, diff2, true, count);
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ques = clacScore(ques, num);
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quesObj += "'ques':[";
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for (int n = 0; n < ques.Length; n++)
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{
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ques[n].Qus_Explain = "";
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ques[n].Qus_Answer = "";
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ques[n] = Extend.Questions.TranText(ques[n]);
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string js = ques[n].ToJson();
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//如果是单选题，或多选题，或填空题
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if (ques[n].Qus_Type == 1 || ques[n].Qus_Type == 2 || ques[n].Qus_Type == 5)
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quesObj += getAnserJson(ques[n], js);
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else
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quesObj += js;
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if (n < ques.Length - 1) quesObj += ",";
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}
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quesObj += "]";
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quesObj += "}";
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if (i < tpi.Length - 1) quesObj += ",";
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json += quesObj;
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}
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json += "]";
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return json.Replace("'", "\"");
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}
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/// <summary>
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/// 计算每道试题的分数
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/// </summary>
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/// <param name="ques">试题</param>
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/// <param name="total">试题的总分</param>
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/// <returns></returns>
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private Song.Entities.Questions[] clacScore(Song.Entities.Questions[] ques, float total)
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{
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float surplus = total;
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for (int j = 0; j < ques.Length; j++)
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{
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ques[j].Qus_Explain = ques[j].Qus_Answer = ques[j].Qus_ErrorInfo = "";
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ques[j] = Extend.Questions.TranText(ques[j]);
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//当前试题的分数
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float curr = total / ques.Length;
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curr = ((float)Math.Round(curr * 10)) / 10;
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if (j < ques.Length - 1)
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{
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ques[j].Qus_Number = curr;
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surplus = surplus - curr;
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}
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else
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{
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ques[j].Qus_Number = surplus;
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}
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}
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return ques;
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}
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private string getAnserJson(Song.Entities.Questions q, string json)
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{
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//当前试题的答案
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Song.Entities.QuesAnswer[] ans = Business.Do<IQuestions>().QuestionsAnswer(q, null);
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string ansStr = "[";
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for (int i = 0; i < ans.Length; i++)
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{
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ans[i] = Extend.Questions.TranText(ans[i]);
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ansStr += ans[i].ToJson();
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if (i < ans.Length - 1) ansStr += ",";
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}
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ansStr += "]";
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json = json.Replace("}", ",\"Answer\":" + ansStr + "}");
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return json;
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}
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public bool IsReusable
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{
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get
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{
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return false;
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}
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}
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}
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} |