待考界面添加接口

sexam/src/main/java/com/xhkjedu/sexam/controller/paperstudent/EPaperStudentController.java

         return new ResultVo(0, "成功获取考试列表", pageResult);
     }
 
+    //待考界面--考试信息
+    @PostMapping("/info")
+    public ResultVo getExamSubjectPaper(@RequestBody EPaperStudent eps) {
+        N_Utils.validation(new Object[]{eps.getEpsid(), "学生id", 1});
+        Map map = ePaperStudentService.getExamSubjectPaperByEpsid(eps.getEpsid());
+        return new ResultVo(0, "成功获取考试信息", map);
+    }
+
     //学生开始考试(android)
     @PostMapping("/spa")
     public ResultVo startPaperForAndroid(@RequestBody EPaperStudent eps) {

sexam/src/main/java/com/xhkjedu/sexam/mapper/paperstudent/EPaperStudentMapper.java

     //学生已结束考试列表
     List<Map> listExamsEndForStudent(@Param("studentid")Integer studentid);
 
+    //获取考试科目时间信息
+    Map getExamSubjectPaperByEpsid(@Param("epsid")Integer epsid);
+
     //考试试卷基本信息
     EPaperStudentVo getExamSubjectByEpsid(@Param("epsid")Integer epsid);
 

sexam/src/main/java/com/xhkjedu/sexam/service/paperstudent/EPaperStudentService.java

         return ePaperStudentMapper.listExamPapersForStudent(eps.getStudentid());
     }
 
+    public Map getExamSubjectPaperByEpsid(Integer epsid){
+        Map map = ePaperStudentMapper.getExamSubjectPaperByEpsid(epsid);
+        Long times = null;
+        if(map.get("sdate")!=null && map.get("begintime")!=null && map.get("endtime")!=null){
+            long bg = ExamUtil.strToTimestamp(map.get("sdate").toString() + " " + map.get("begintime").toString() + ":00");
+            long ed = ExamUtil.strToTimestamp(map.get("sdate").toString() + " " + map.get("endtime").toString() + ":00");
+            times = ExamUtil.subtract(ed,bg);
+        }
+        map.put("times",times);
+        return map;
+    }
+
     /**
      * 学生已结束考试列表
      *

sexam/src/main/java/com/xhkjedu/sexam/utils/ExamUtil.java

 import lombok.extern.slf4j.Slf4j;
 
 import java.math.BigDecimal;
+import java.math.BigInteger;
+import java.time.LocalDateTime;
+import java.time.ZoneId;
+import java.time.format.DateTimeFormatter;
 import java.util.Map;
 import java.util.concurrent.ConcurrentHashMap;
 
         BigDecimal b2 = new BigDecimal(Double.toString(v2));
         return b1.multiply(b2).doubleValue();
     }
+
+    //字符串转为时间戳(秒)
+    public static long strToTimestamp(String str){
+        DateTimeFormatter ftf = DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss");
+        LocalDateTime parse = LocalDateTime.parse(str, ftf);
+        return LocalDateTime.from(parse).atZone(ZoneId.systemDefault()).toEpochSecond();
+    }
+
+    //两数相减
+    public static long subtract(long a,long b){
+        BigInteger biginta = new BigInteger(a + "");
+        BigInteger bigintb = new BigInteger(b + "");
+        return biginta.subtract(bigintb).longValue();
+
+    }
 }

sexam/src/main/resources/mapper/paper/EPaperMapper.xml

     <select id="getExamPaperAndSubject" resultType="java.util.Map">
         select ep.epid,ep.esid,ep.ptype,e.examname,e.examstate,s.subjectname,ep.scantronfile,ep.scantronnote,ep.scantronwh
         ,ep.scantroncol,ep.cantronmiss,ep.cantronbad,ep.codetype,ep.cantroncode,ep.pnum,ep.pscore,ep.cantronbarcode,
-               ep.cantronqrcode,ep.cantronpage,ep.cantronloc,ep.scantronspace,sp.codenum
+               ep.cantronqrcode,ep.cantronpage,ep.cantronloc,ep.scantronspace,ep.codenum
         from e_paper ep left join e_base e on ep.examid=e.examid
         left join t_subject s on ep.subjectid=s.subjectid where ep.epid=#{epid}
     </select>

sexam/src/main/resources/mapper/paperstudent/EPaperStudentMapper.xml

         order by e.examdate desc,es.sdate desc,es.begintime desc
     </select>
 
+    <!--获取考试科目时间信息-->
+    <select id="getExamSubjectPaperByEpsid" resultType="java.util.Map">
+        select ps.epsid,e.examname,e.examcomm,es.subjectid,es.subjectname,es.sdate,es.begintime,es.endtime,p.ptype
+        from e_paper_student ps left join e_base e on ps.examid=e.examid
+        left join e_subject es on ps.esid=es.esid and ps.examid=es.examid
+        left join e_paper p on ps.epid=p.epid
+        where ps.epsid=#{epsid}
+    </select>
+
     <!--考试试卷基本信息-->
     <select id="getExamSubjectByEpsid" resultType="com.xhkjedu.sexam.vo.paperstudent.EPaperStudentVo">
         select ps.epsid,ps.examid,ps.esid,ps.classid,ps.studentid,es.subjectid,es.subjectname,es.sdate,es.begintime,es.endtime,