|
|
|
|
@ -7,54 +7,59 @@ import javax.servlet.annotation.WebServlet;
|
|
|
|
|
import javax.servlet.http.HttpServlet;
|
|
|
|
|
import javax.servlet.http.HttpServletRequest;
|
|
|
|
|
import javax.servlet.http.HttpServletResponse;
|
|
|
|
|
import java.io.IOException;
|
|
|
|
|
import java.io.IOException; //导入IO异常和日期类
|
|
|
|
|
import java.util.Date;
|
|
|
|
|
|
|
|
|
|
@WebServlet("/DeptAddStuPunchServlet")
|
|
|
|
|
public class DeptAddStuPunchServlet extends HttpServlet {
|
|
|
|
|
public class DeptAddStuPunchServlet extends HttpServlet { //定义一个继承自HttpServlet的Servlet类。
|
|
|
|
|
|
|
|
|
|
@Override
|
|
|
|
|
protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
|
|
|
|
|
protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException { //重写doGet方法，处理HTTP GET请求。
|
|
|
|
|
//统一请求和响应的字符编码为UTF-8，防止中文乱码，并设置响应内容类型为HTML。
|
|
|
|
|
req.setCharacterEncoding("utf-8");
|
|
|
|
|
resp.setCharacterEncoding("utf-8");
|
|
|
|
|
resp.setContentType("text/html;charset=utf-8");
|
|
|
|
|
|
|
|
|
|
//获取表单请求的参数
|
|
|
|
|
String sno = req.getParameter("sno");
|
|
|
|
|
String sispunch = req.getParameter("sispunch");
|
|
|
|
|
String spunchdate = req.getParameter("spunchdate");
|
|
|
|
|
String spunchtime = req.getParameter("spunchtime");
|
|
|
|
|
String sishot = req.getParameter("sishot");
|
|
|
|
|
String siscough = req.getParameter("siscough");
|
|
|
|
|
String sisseem = req.getParameter("sisseem");
|
|
|
|
|
String sisdiagnose = req.getParameter("sisdiagnose");
|
|
|
|
|
String sstatus = req.getParameter("sstatus");
|
|
|
|
|
String sno = req.getParameter("sno"); //从 HTTP 请求中获取参数名为 "sno" 的值，并将其赋值给 sno 变量
|
|
|
|
|
String sispunch = req.getParameter("sispunch");//从 HTTP 请求中获取参数名为 "sispunch" 的值，并将其赋值给 sispunch 变量
|
|
|
|
|
String spunchdate = req.getParameter("spunchdate");//从 HTTP 请求中获取参数名为 "spunchdate" 的值，并将其赋值给 spunchdate 变量
|
|
|
|
|
String spunchtime = req.getParameter("spunchtime");//从 HTTP 请求中获取参数名为 "spunchtime" 的值，并将其赋值给 spunchtime 变量
|
|
|
|
|
String sishot = req.getParameter("sishot");//从 HTTP 请求中获取参数名为 "sishot" 的值，并将其赋值给 sishot 变量
|
|
|
|
|
String siscough = req.getParameter("siscough");//从 HTTP 请求中获取参数名为 "siscough" 的值，并将其赋值给 siscough 变量
|
|
|
|
|
String sisseem = req.getParameter("sisseem");//从 HTTP 请求中获取参数名为 "sisseem" 的值，并将其赋值给 sisseem 变量
|
|
|
|
|
String sisdiagnose = req.getParameter("sisdiagnose");//从 HTTP 请求中获取参数名为 "sisdiagnose" 的值，并将其赋值给 sisdiagnose 变量
|
|
|
|
|
String sstatus = req.getParameter("sstatus");//从 HTTP 请求中获取参数名为 "sstatus" 的值，并将其赋值给 sstatus 变量
|
|
|
|
|
|
|
|
|
|
String sql = null;
|
|
|
|
|
|
|
|
|
|
//声明SQL语句变量，并输出调试信息
|
|
|
|
|
System.out.println("shgshgh");
|
|
|
|
|
|
|
|
|
|
//查询是否存在此人
|
|
|
|
|
sql = "select count(*) as num from stupunchin where sno = ? and spunchdate = ?";
|
|
|
|
|
Object[] objects = {sno, spunchdate};
|
|
|
|
|
int count = DeptAdminDao.findTotalCount(sql, objects);
|
|
|
|
|
sql = "select count(*) as num from stupunchin where sno = ? and spunchdate = ?";//检查stupunchin表中是否存在相同学号和日期的记录
|
|
|
|
|
Object[] objects = {sno, spunchdate}; //使用Object数组传递参数，防止SQL注入。
|
|
|
|
|
int count = DeptAdminDao.findTotalCount(sql, objects);//调用DAO方法findTotalCount返回匹配记录数。
|
|
|
|
|
|
|
|
|
|
if (count == 0){//无则操作
|
|
|
|
|
if (count == 0){//条件判断：如果不存在重复记录（count为0），执行插入操作。
|
|
|
|
|
sql = "insert into stupunchin values(?, ?, ?, ?, ?, ?, ?, ?, ?)";
|
|
|
|
|
Object[] objects1 = {sno, sispunch, spunchdate, spunchtime, sishot, siscough, sisseem, sisdiagnose, sstatus};
|
|
|
|
|
//SQL插入语句：向stupunchin表插入包含9个字段的新记录。
|
|
|
|
|
//参数绑定：将表单参数按顺序填入占位符。
|
|
|
|
|
|
|
|
|
|
int num = DeptAdminDao.executeUpdate(sql, objects1);
|
|
|
|
|
int num = DeptAdminDao.executeUpdate(sql, objects1);//执行更新：调用DAO方法executeUpdate执行插入，返回受影响的行数。
|
|
|
|
|
|
|
|
|
|
System.out.println(num);
|
|
|
|
|
|
|
|
|
|
req.getRequestDispatcher("/DeptQueryStuPunchByPageServlet?currentPage=1&rows=7&sname=&sclass=&spunchdate=").forward(req, resp);
|
|
|
|
|
}else {
|
|
|
|
|
req.getRequestDispatcher("/view/alluse/existdataofadd.jsp").forward(req, resp);
|
|
|
|
|
}
|
|
|
|
|
req.getRequestDispatcher("/view/alluse/existdataofadd.jsp").forward(req, resp);//转发请求：插入成功后，转发到分页查询Servlet，显示第一页数据（参数currentPage=1，每页7行）。
|
|
|
|
|
}//处理重复数据：如果记录已存在，转发到提示页面existdataofadd.jsp。
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
@Override
|
|
|
|
|
protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
|
|
|
|
|
doGet(req, resp);
|
|
|
|
|
doGet(req, resp);//处理POST请求：重写doPost方法，直接调用doGet，统一处理GET和POST请求。
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
hql
5 months ago