企业型网站前后台源码+mysql数据库，毕业设计，开发模块

package com.dao; import java.sql.*; import java.util.Collection; import java.util.ArrayList; import javax.servlet.http.HttpServletRequest; import com.core.Database; import com.core.FinalConstants; import com.core.ParamUtils; import com.model.User; /** * <p>Title: </p> * <p>Description: </p> * <p>Copyright: Copyright (c) 2004</p> * <p>Company: MR</p> * @author BWM * @version 1.0 */ public class Dbuser extends User { private User u = new User(); //不使初始化select public Dbuser(){} //使用数据库始化update public Dbuser(String sql) { Connection con = null; PreparedStatement ps = null; ResultSet rs = null; try { con = Database.getConnection(); ps = con.prepareStatement(FinalConstants.SELECT_USER+sql,ResultSet.TYPE_SCROLL_INSENSITIVE,ResultSet.CONCUR_READ_ONLY); rs = ps.executeQuery(); if (rs.next()) { u.setUid(ParamUtils.getSqlString(rs.getString("uid"))); u.setPassword(ParamUtils.getSqlString(rs.getString("password"))); u.setName(ParamUtils.getSqlString(rs.getString("name"))); u.setRegqu(ParamUtils.getSqlString(rs.getString("regqu"))); u.setReganswer(ParamUtils.getSqlString(rs.getString("reganswer"))); u.setIid(ParamUtils.getSqlString(rs.getString("iid"))); u.setSex(rs.getInt("sex")); u.setAge(rs.getInt("age")); u.setTel(ParamUtils.getSqlString(rs.getString("tel"))); u.setEmail(ParamUtils.getSqlString(rs.getString("email"))); u.setQq(ParamUtils.getSqlString(rs.getString("qq"))); u.setRegtime(ParamUtils.getSqlString(rs.getString("regtime"))); u.setAddress(ParamUtils.getSqlString(rs.getString("address"))); u.setHttp(ParamUtils.getSqlString(rs.getString("http"))); u.setStatus(rs.getInt("status")); u.setState(rs.getInt("state")); u.setResume(ParamUtils.getSqlString(rs.getString("resume"))); } } catch (SQLException e) { System.out.println(e.getMessage()); e.printStackTrace(); } finally { System.out.println(ps+" Dbuser(String sql) "+u.getUid()); try { if (ps != null) { ps.close(); ps = null; } } catch (SQLException e) { ps = null; } try { if (con != null) { con.close(); con = null; } } catch (SQLException e) { con = null; } } } //使用内建对像初始化insert public Dbuser(HttpServletRequest request) { u.setUid(ParamUtils.getRequestString(request, "uid")); u.setPassword(ParamUtils.getRequestString(request, "password")); u.setName(ParamUtils.getRequestString(request, "name")); u.setRegqu(ParamUtils.getRequestString(request, "regqu")); u.setReganswer(ParamUtils.getRequestString(request, "reganswer")); u.setSex(ParamUtils.getIntParameter(request, "sex")); u.setAge(ParamUtils.getIntParameter(request, "age")); u.setIid(ParamUtils.getRequestString(request, "iid")); u.setTel(ParamUtils.getRequestString(request, "tel")); u.setEmail(ParamUtils.getRequestString(request, "email")); u.setQq(ParamUtils.getRequestString(request, "qq")); u.setAddress(ParamUtils.getRequestString(request, "address")); u.setHttp(ParamUtils.getRequestString(request, "http")); u.setStatus(ParamUtils.getIntParameter(request, "status")); u.setState(ParamUtils.getIntParameter(request, "state")); u.setResume(ParamUtils.getRequestString(request, "resume")); } //注册时间插入系统时间 public boolean Insert() { boolean b = false; Connection con = null; PreparedStatement ps = null; try { con = Database.getConnection(); ps = con.prepareStatement(FinalConstants.INSERT_USER); System.out.println("Dbuser.java中:"+FinalConstants.INSERT_USER+"结束"); ps.setString(1, u.getUid()); ps.setString(2, u.getPassword()); ps.setString(3, u.getName()); ps.setString(4, u.getRegqu()); ps.setString(5, u.getReganswer()); ps.setString(6, u.getIid()); ps.setInt(7, u.getSex()); ps.setInt(8, u.getAge()); ps.setString(9, u.getTel()); ps.setString(10, u.getEmail()); ps.setString(11, u.getQq()); ps.setString(12, u.getAddress()); ps.setString(13, u.getHttp()); ps.setInt(14, u.getStatus()); ps.setInt(15, u.getState()); ps.setString(16, u.getResume()); if (ps.executeUpdate() > 0) { b = true; } else { b = false; } } catch (SQLException e) { b = false; System.out.println(e.getMessage()); e.printStackTrace(); } finally { System.out.println(ps+" Dbuser.Insert()"); try { if (ps != null) { ps.close(); } } catch (SQLException e) { ps = null; } try { if (con != null) { con.close(); } } catch (SQLException e) { con = null; } } return b; } private boolean Update() { boolean b = false; Connection con = null; PreparedStatement ps = null; try { con = Database.getConnection(); ps = con.prepareStatement(FinalConstants.UPDATE_USER); ps.setString(1, u.getPassword()); ps.setString(2, u.getName()); ps.setString(3, u.getIid()); ps.setInt(4, u.getSex()); ps.setInt(5, u.getAge()); ps.setString(6, u.getTel()); ps.setString(7, u.getEmail()); ps.setString(8, u.getQq()); ps.setString(9, u.getAddress()); ps.setString(10, u.getHttp()); ps.setInt(11, u.getStatus()); ps.setInt(12, u.getState()); ps.setString(13, u.getResume()); ps.setString(14, u.getUid()); if (ps.executeUpdate() > 0) { b = true; } else { b = false; } } catch (SQLException e) { b = false; e.printStackTrace(); } finally { System.out.println(ps+" Dbuser.Update() "); try { if (ps != null) { ps.close(); } } catch (SQLException e) { ps = null; } try { if (con != null) { con.close(); } } catch (SQLException e) { con = null; } } return b; } private boolean Update_m() { boolean b = false; Connection con = null; PreparedStatement ps = null; try { con = Database.getConnection(); ps = con.prepareStatement(FinalConstants.UPDATE_USER_M); ps.setInt(1, u.getStatus()); ps.setInt(2, u.getState()); ps.setString(3, u.getUid()); if (ps.executeUpdate() > 0) { b = true; } else { b = false; } } catch (SQLException e) {