houseinfo.java

java房产管理系统

import javax.swing.*;
import java.awt.*;
import com.borland.jbcl.layout.*;
import java.awt.event.*;
import java.sql.*;

public class HouseInfo
    extends JFrame {
  XYLayout xYLayout1 = new XYLayout();
  JPanel jPanel1 = new JPanel();
  XYLayout xYLayout2 = new XYLayout();
  JLabel jLabel4 = new JLabel();
  JLabel jLabel8 = new JLabel();
  JButton btnEdit = new JButton();
  JTextField txtBuyPrice = new JTextField();
  JComboBox cboHouseLocation = new JComboBox();
  JButton btnAdd = new JButton();
  JLabel jLabel1 = new JLabel();
  JLabel jLabel3 = new JLabel();
  JLabel jLabel7 = new JLabel();
  JButton btnDelete = new JButton();
  JComboBox cboUseType = new JComboBox();
  JTextField txtArea = new JTextField();
  JTextField txtRoomNum = new JTextField();
  JButton btnSave = new JButton();
  JLabel jLabel2 = new JLabel();
  JComboBox cboHeading = new JComboBox();
  JLabel jLabel6 = new JLabel();
  JTextField txtHouseName = new JTextField();
  JButton btnExit = new JButton();
  JTextField txtBuyTime = new JTextField();
  JTextField txtYTArea = new JTextField();
  JLabel jLabel9 = new JLabel();
  JLabel jLabel5 = new JLabel();
  JTextField txtOwner = new JTextField();
  JLabel jLabel10 = new JLabel();

  //生成数据库操作类新实例，用于数据库操作
  DBManager db = new DBManager();
  //当前操作ID
  String curID = new String();
  //操作类型
  String operType = new String();


  public HouseInfo() {
    try {
      jbInit();
      initForm();
    }
    catch (Exception ex) {
      ex.printStackTrace();
    }
  }

  public HouseInfo(String ID) {
    try {
      jbInit();
      setCurID(ID);
      initForm();
    }
    catch (Exception ex) {
      ex.printStackTrace();
    }
  }

  void jbInit() throws Exception {
    this.getContentPane().setLayout(xYLayout1);
    xYLayout1.setWidth(467);
    xYLayout1.setHeight(323);
    jPanel1.setBorder(BorderFactory.createEtchedBorder());
    jPanel1.setLayout(xYLayout2);
    jLabel4.setFont(new java.awt.Font("宋体", 0, 12));
    jLabel4.setText("购房时间：");
    jLabel8.setText("房屋坐落：");
    jLabel8.setFont(new java.awt.Font("宋体", 0, 12));
    btnEdit.setText("修改");
    btnEdit.addActionListener(new HouseInfo_btnEdit_actionAdapter(this));
    btnEdit.setFont(new java.awt.Font("宋体", 0, 12));
    txtBuyPrice.setText("");
    txtBuyPrice.setFont(new java.awt.Font("宋体", 0, 12));
    cboHouseLocation.setFont(new java.awt.Font("宋体", 0, 12));
    cboHouseLocation.setEditable(false);
    btnAdd.setFont(new java.awt.Font("宋体", 0, 12));
    btnAdd.setText("新增");
    btnAdd.addActionListener(new HouseInfo_btnAdd_actionAdapter(this));
    jLabel1.setFont(new java.awt.Font("宋体", 0, 12));
    jLabel1.setText("房间号：");
    jLabel3.setFont(new java.awt.Font("宋体", 0, 12));
    jLabel3.setText("购房价格：");
    jLabel7.setFont(new java.awt.Font("宋体", 0, 12));
    jLabel7.setText("阳台面积：");
    btnDelete.setText("删除");
    btnDelete.addActionListener(new HouseInfo_btnDelete_actionAdapter(this));
    btnDelete.setFont(new java.awt.Font("宋体", 0, 12));
    cboUseType.setFont(new java.awt.Font("宋体", 0, 12));
    txtArea.setText("");
    txtArea.addActionListener(new HouseInfo_txtArea_actionAdapter(this));
    txtArea.setFont(new java.awt.Font("宋体", 0, 12));
    txtRoomNum.setText("");
    txtRoomNum.setFont(new java.awt.Font("宋体", 0, 12));
    btnSave.setText("保存");
    btnSave.addActionListener(new HouseInfo_btnSave_actionAdapter(this));
    btnSave.setFont(new java.awt.Font("宋体", 0, 12));
    jLabel2.setText("间数：");
    jLabel2.setFont(new java.awt.Font("宋体", 0, 12));
    cboHeading.setFont(new java.awt.Font("宋体", 0, 12));
    cboHeading.setEditable(false);
    jLabel6.setText("建筑面积：");
    jLabel6.setFont(new java.awt.Font("宋体", 0, 12));
    txtHouseName.setFont(new java.awt.Font("宋体", 0, 12));
    txtHouseName.setText("");
    btnExit.setText("退出");
    btnExit.addActionListener(new HouseInfo_btnExit_actionAdapter(this));
    btnExit.setFont(new java.awt.Font("宋体", 0, 12));
    txtBuyTime.setFont(new java.awt.Font("宋体", 0, 12));
    txtBuyTime.setText("");
    txtYTArea.setFont(new java.awt.Font("宋体", 0, 12));
    txtYTArea.setText("");
    jLabel9.setText("朝向：");
    jLabel9.setFont(new java.awt.Font("宋体", 0, 12));
    jLabel5.setText("使用方式：");
    jLabel5.setFont(new java.awt.Font("宋体", 0, 12));
    txtOwner.setFont(new java.awt.Font("宋体", 0, 12));
    txtOwner.setText("");
    jLabel10.setFont(new java.awt.Font("宋体", 0, 12));
    jLabel10.setText("住户：");
    this.setTitle("住房信息维护");
    jPanel1.add(txtRoomNum, new XYConstraints(76, 89, 112, 24));
    jPanel1.add(cboHouseLocation, new XYConstraints(76, 12, 332, -1));
    jPanel1.add(jLabel1, new XYConstraints(13, 57, 68, -1));
    jPanel1.add(txtHouseName, new XYConstraints(76, 51, 111, 24));
    jPanel1.add(txtBuyTime, new XYConstraints(76, 128, 112, 24));
    jPanel1.add(jLabel4, new XYConstraints(13, 133, 68, -1));
    jPanel1.add(jLabel6, new XYConstraints(13, 172, 68, -1));
    jPanel1.add(txtArea, new XYConstraints(76, 166, 112, 24));
    jPanel1.add(jLabel7, new XYConstraints(205, 169, 68, -1));
    jPanel1.add(jLabel3, new XYConstraints(205, 127, 68, -1));
    jPanel1.add(jLabel5, new XYConstraints(205, 92, 68, -1));
    jPanel1.add(jLabel9, new XYConstraints(205, 54, 68, -1));
    jPanel1.add(cboHeading, new XYConstraints(282, 49, 126, -1));
    jPanel1.add(cboUseType, new XYConstraints(282, 89, 126, -1));
    jPanel1.add(txtBuyPrice, new XYConstraints(282, 124, 126, 24));
    jPanel1.add(txtYTArea, new XYConstraints(282, 164, 126, 24));
    jPanel1.add(jLabel2, new XYConstraints(13, 92, 53, -1));
    jPanel1.add(jLabel8, new XYConstraints(13, 20, 68, -1));
    jPanel1.add(btnSave, new XYConstraints(278, 240, 61, 27));
    jPanel1.add(btnAdd, new XYConstraints(10, 241, 61, 27));
    jPanel1.add(btnEdit, new XYConstraints(80, 241, 61, 27));
    jPanel1.add(btnDelete, new XYConstraints(152, 241, 61, 27));
    jPanel1.add(btnExit, new XYConstraints(347, 240, 61, 27));
    jPanel1.add(jLabel10, new XYConstraints(14, 211, 44, -1));
    jPanel1.add(txtOwner, new XYConstraints(76, 206, 112, 24));
    this.getContentPane().add(jPanel1, new XYConstraints(18, 17, 430, 287));
  }

  void txtArea_actionPerformed(ActionEvent e) {

  }

  void btnExit_actionPerformed(ActionEvent e) {
    if (!operType.equals("none")) {
      int ir = CommonDialog.showDialog(3, "房产管理系统", "当前操作尚未保存，确定要退出吗？");
      if (ir == 2) {
        return;
      }
    }
    this.dispose();
  }

  void setCurID(String ID) {
    curID = ID;
  }

  void setOperType(String type) {
    operType = type;
  }

  void btnAdd_actionPerformed(ActionEvent e) {
    if (!operType.equals("none")) {
      int ir = CommonDialog.showDialog(3, "房产管理系统", "当前操作尚未保存，确定要新增吗？");
      if (ir == 2) {
        return;
      }
    }
    groupSetEnabled(true);
    btnSetEnabled(true, false, false, true);
    clearData();
    setCurID("");
    setOperType("add");
  }

  void initForm() {
    groupSetEnabled(false);
    fullBuildInfo();
    setOperType("none");
    db.fullCombo(cboHeading, "Heading");
    db.fullCombo(cboUseType, "UseType");
//若ID不为空，则填充当前房产信息，并将【修改】和【删除】设为可用
    if (!curID.equals("")) {
      fullInfo(curID);
      btnSetEnabled(true, true, true, false);
    }
    else {
      btnSetEnabled(true, false, false, false);
    }
  }
// 根据住房ID填充住房信息：
  void fullInfo(String ID) {
    //得到查询语句
    String sql = "select * from HouseInfo where ID='" + ID + "'";
    try {
      //得到结果集
      ResultSet rs = db.getResult(sql);
      if (rs.first()) {
        //填充信息项内容
        txtArea.setText(rs.getString("Area")); //面积
        txtBuyPrice.setText(rs.getString("BuyPrice")); //购房价格
        txtRoomNum.setText(rs.getString("Number")); //间数
        txtBuyTime.setText(rs.getString("BuyTime")); //购房时间
        txtHouseName.setText(rs.getString("Name")); //房间号
        txtYTArea.setText(rs.getString("YTArea")); //阳台面积
        //调用getByField函数根据房产ID得到房产坐落，再设置房产坐落列表选择项
        cboHouseLocation.setSelectedItem(db.getByField("BuildInfo", "Location",
            "ID='" + rs.getString("BuildID")+"'"));
        cboHeading.setSelectedIndex(Integer.parseInt(rs.getString("Heading"))-1); //朝向
        cboUseType.setSelectedIndex(Integer.parseInt(rs.getString("UseType"))-1); //使用方式
        //调用getByField函数根据住户ID得到住户姓名，再设置住户输入框文本
        txtOwner.setText(db.getByField("OwnerInfo", "Name","ID='" + rs.getString("OwnerID")+"'"));
      }
      else {
        rs.close();
      }
    }
    catch (Exception e) {
      e.printStackTrace();
    }
  }
//加载房产坐落信息
  void fullBuildInfo() {
    //sql语句中加distinct限制，以避免重复
    String sql = "select distinct Location from BuildInfo ";
    String content = new String();
    try {
      //得到结果集
      ResultSet rs = db.getResult(sql);
      if (rs.first()) {
        //循环加载结果
        rs.beforeFirst();
        while (rs.next()) {
          content = rs.getString("Location");
          cboHouseLocation.addItem(content);
        }
      }
      else {
        rs.close();
      }
      //设置选中项为空
      cboHouseLocation.setSelectedItem(null);
    }
    catch (Exception e) {
      e.printStackTrace();
    }
  }
//根据坐落得到房产ID
  //住房信息表中房产信息项存储的是房产ID，所以在保存时首先要将房产坐落转化为房产ID
  String getLocationID(String location) {
    String sql = "select * from BuildInfo where location='" + location + "'";
    String ID = new String();
    try {