锐客网

  1. 首页 > 睿知 > it技术 > >

java随机出题源代码 java测试数据随机生成( 二 )

IT技术String


scan_value = https://www.04ip.com/post/bigDecimal1.setScale(2, BigDecimal.ROUND_HALF_UP).doubleValue();
BigDecimal bigDecimal2 = new BigDecimal(result_value);
result_value = https://www.04ip.com/post/bigDecimal2.setScale(2, BigDecimal.ROUND_HALF_UP).doubleValue();
result_str = (scan_value=https://www.04ip.com/post/=result_value)?"回答正确！":"回答错误！";
stringBuilder.append(scan_value).append(";(答案："+result_value+")"+result_str).append("\n");
}else{
int scan_value = https://www.04ip.com/post/Integer.parseInt(sc_str);
int result_value;
if("+".equals(f)){
result_value = https://www.04ip.com/post/a + b;
}else if("-".equals(f)){
result_value = https://www.04ip.com/post/a - b;
}else if("*".equals(f)){
result_value = https://www.04ip.com/post/a * b;
}else{
break;
}
result_str = (scan_value=https://www.04ip.com/post/=result_value)?"回答正确！":"回答错误！";
stringBuilder.append(scan_value).append(";(答案："+result_value+")"+result_str).append("\n");
}
}
System.out.println(stringBuilder.toString());
}
}
如何用Java实现随机出题？import java.io.*;
import java.sql.*;
import javax.servlet.*;
import javax.servlet.http.*;
import oracle.jdbc.driver.OracleDriver;
public class GenPaperServlet extends HttpServlet
{
Connection conn;
Statement stmt;
ResultSet rs;
int total_question_num;
int total_question_in_paper;
int total_paper_num;
String curr_classid;
public GenPaperServlet()
{
conn = null;
stmt = null;
rs = null;
total_question_num = 0;
total_question_in_paper = 0;
total_paper_num = 0;
curr_classid = "";
}
public void doGet(HttpServletRequest httpservletrequest, HttpServletResponse httpservletresponse)
throws ServletException, IOException
{
httpservletresponse.setContentType("text/html;charset=GBK");
PrintWriter printwriter = httpservletresponse.getWriter();
printwriter.println("htmlhead/headbodycenter");
printwriter.println("请以POST方式提交");
printwriter.println("/center/body/html");
printwriter.close();
}
public void doPost(HttpServletRequest httpservletrequest, HttpServletResponse httpservletresponse)
throws ServletException, IOException
{
httpservletresponse.setContentType("text/html;charset=GBK");
PrintWriter printwriter = httpservletresponse.getWriter();
String s = httpservletrequest.getParameter("classid");//"20"
String s1 = httpservletrequest.getParameter("paper_num");//"1"
if(s == null || s1 == null)
{
printwriter.println("center");
printwriter.println("请按照正常方式提交数据br");
printwriter.println("a href=https://www.04ip.com/test/admin/genpaper.jsp单击这里设置生成试卷的参数/a");
printwriter.println("/center");
}
total_paper_num = Integer.parseInt(s1);
curr_classid = s;
int i = 0;
if(!open_db(curr_classid))
{
printwriter.println("打开数据库错误！");
return;
}
if(!setParams(curr_classid))
{
System.out.println("设置系统参数错误！");
return;
}
if(!verify_QuertionLib())
{
printwriter.println("试题库中试卷不足，请增加新的试题！");
printwriter.println("班级代号：" + curr_classid);
printwriter.println("该班级一套试卷中的试题数：" + total_question_in_paper);
printwriter.println("目前题库中该班级的试题总数：" + total_question_num);
return;
}
i = genPaper(total_paper_num, curr_classid);
if(i == 0)
{
printwriter.println("生成试卷操作失败！");
return;
}
if(!updateOtherTable(i, curr_classid))
{
printwriter.println("更新相关表操作失败！");

推荐阅读


上一篇：mysqlmongodb使用场景，mongodb和mysql使用场景

下一篇：python爬虫第五章，python爬虫总结