首页>代码>java servlet+mysql开发的学校官网+教务系统+图书馆系统,功能完善,供参考学习>/五道口科学研究院/MyUniversity/src/cn/com/dao/TeaDao.java
package cn.com.dao; import java.sql.Connection; import java.sql.PreparedStatement; import java.sql.ResultSet; import java.sql.SQLException; import java.util.ArrayList; import java.util.List; import cn.com.entity.Class; import cn.com.entity.Major; import cn.com.entity.Question; import cn.com.entity.Score; import cn.com.entity.Student; import cn.com.entity.Teacher; import cn.com.utils.DBUtils; public class TeaDao { Connection conn; PreparedStatement pst; ResultSet rs; public Teacher tealogin(Teacher tea) { // TODO Auto-generated method stub try { conn = DBUtils.getConn(); String sql = "select * from teacher where tid = ? and tname = ? and tpwd = ?"; pst = conn.prepareStatement(sql); pst.setString(1, tea.getTid()); pst.setString(2, tea.getTname()); pst.setString(3, tea.getTpwd()); rs = pst.executeQuery(); while(rs.next()){ Teacher t = new Teacher(); t.setTid(rs.getString("tid")); t.setTname(rs.getString("tname")); t.setTpwd(rs.getString("tpwd")); t.setTphone(rs.getString("tphone")); return t; } } catch (Exception e) { // TODO Auto-generated catch block e.printStackTrace(); }finally{ DBUtils.closeResouce(conn, pst, rs); } return null; } public List<Student> showStu(String tid) { // TODO Auto-generated method stub try { conn = DBUtils.getConn(); String sql = "select * from student s,major m,class c,teacher t where s.mid = m.mid and s.cid = c.cid and t.tid = c.tid and t.tid = ?"; pst = conn.prepareStatement(sql); pst.setString(1, tid); rs = pst.executeQuery(); List<Student> bylist = new ArrayList(); while(rs.next()){ Student st = new Student(); st.setSid(rs.getString("sid")); st.setSname(rs.getString("sname")); st.setSeid(rs.getString("seid")); st.setSpwd(rs.getString("spwd")); st.setSsex(rs.getInt("ssex")); st.setSof(rs.getString("sof")); st.setScountenance(rs.getString("scountenance")); st.setSchooling(rs.getString("schooling")); st.setStatus(rs.getInt("status")); st.setSxuezhi(rs.getString("sxuezhi")); st.setPhone(rs.getString("phone")); st.setSphone(rs.getString("sphone")); st.setSqq(rs.getString("sqq")); st.setSmail(rs.getString("smail")); st.setMid(rs.getInt("mid")); st.setCid(rs.getInt("cid")); st.setMname(rs.getString("mname")); st.setCname(rs.getString("cname")); bylist.add(st); System.out.println(st.getCname()+"!!!!!!???"); } return bylist; } catch (Exception e) { // TODO Auto-generated catch block e.printStackTrace(); }finally{ DBUtils.closeResouce(conn, pst, rs); } return null; } public List<Student> showMohu(String tid, String mohu) { // TODO Auto-generated method stub try { conn = DBUtils.getConn(); String sql = "select * from student s,major m,class c,teacher t where s.mid = m.mid and s.cid = c.cid and t.tid = c.tid and t.tid = ? and sname like ?"; pst = conn.prepareStatement(sql); pst.setString(1, tid); pst.setString(2, "%"+mohu+"%"); rs = pst.executeQuery(); List<Student> bylist = new ArrayList(); while(rs.next()){ Student st = new Student(); st.setSid(rs.getString("sid")); st.setSname(rs.getString("sname")); st.setSeid(rs.getString("seid")); st.setSpwd(rs.getString("spwd")); st.setSsex(rs.getInt("ssex")); st.setSof(rs.getString("sof")); st.setScountenance(rs.getString("scountenance")); st.setSchooling(rs.getString("schooling")); st.setStatus(rs.getInt("status")); st.setSxuezhi(rs.getString("sxuezhi")); st.setPhone(rs.getString("phone")); st.setSphone(rs.getString("sphone")); st.setSqq(rs.getString("sqq")); st.setSmail(rs.getString("smail")); st.setMid(rs.getInt("mid")); st.setCid(rs.getInt("cid")); st.setMname(rs.getString("mname")); st.setCname(rs.getString("cname")); bylist.add(st); System.out.println(st.getCname()+"!!!!!!???"); } return bylist; } catch (Exception e) { // TODO Auto-generated catch block e.printStackTrace(); }finally{ DBUtils.closeResouce(conn, pst, rs); } return null; } public List<Major> showMajor() { // TODO Auto-generated method stub try { conn = DBUtils.getConn(); String sql = "select * from major"; pst = conn.prepareStatement(sql); rs = pst.executeQuery(); List<Major> bylist = new ArrayList(); while(rs.next()){ Major ma = new Major(); ma.setMid(rs.getInt("mid")); ma.setMname(rs.getString("mname")); bylist.add(ma); } return bylist; } catch (Exception e) { // TODO Auto-generated catch block e.printStackTrace(); }finally{ DBUtils.closeResouce(conn, pst, rs); } return null; } public List<Class> showClass() { // TODO Auto-generated method stub try { conn = DBUtils.getConn(); String sql = "select * from class"; pst = conn.prepareStatement(sql); rs = pst.executeQuery(); List<Class> bylist = new ArrayList(); while(rs.next()){ Class ma = new Class(); ma.setCid(rs.getInt("cid")); ma.setCname(rs.getString("cname")); bylist.add(ma); } return bylist; } catch (Exception e) { // TODO Auto-generated catch block e.printStackTrace(); }finally{ DBUtils.closeResouce(conn, pst, rs); } return null; } public int addStu(Student stu) { // TODO Auto-generated method stub int i = 0; try { conn = DBUtils.getConn(); String sql = "insert into student values(?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?)"; pst = conn.prepareStatement(sql); pst.setString(1, stu.getSid()); pst.setString(2, stu.getSname()); pst.setString(3, stu.getSeid()); pst.setString(4, stu.getSpwd()); pst.setInt(5, stu.getSsex()); pst.setString(6, stu.getSof()); pst.setString(7, stu.getScountenance()); pst.setString(8, stu.getSchooling()); pst.setInt(9, stu.getStatus()); pst.setString(10, stu.getSxuezhi()); pst.setString(11, null); pst.setString(12, null); pst.setString(13, null); pst.setString(14, null); pst.setInt(15, stu.getMid()); pst.setInt(16, stu.getCid()); i = pst.executeUpdate(); System.out.println("!!!!!!!!!!!!!!!!!!!!"); } catch (SQLException e) { // TODO Auto-generated catch block e.printStackTrace(); }finally{ DBUtils.closeResouce(conn, pst); } return i; } public List<Question> showQu(String tid) { // TODO Auto-generated method stub try { conn = DBUtils.getConn(); String sql = "select * from question where tid = ?"; pst = conn.prepareStatement(sql); pst.setString(1, tid); rs = pst.executeQuery(); List<Question> bylist = new ArrayList(); while(rs.next()){ Question q = new Question(); q.setQid(rs.getInt("qid")); q.setQpj(rs.getInt("qpj")); q.setQlx(rs.getInt("qlx")); q.setQtxt(rs.getString("qtxt")); q.setTid(rs.getString("tid")); bylist.add(q); } return bylist; } catch (Exception e) { // TODO Auto-generated catch block e.printStackTrace(); }finally{ DBUtils.closeResouce(conn, pst, rs); } return null; } }
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