菁英科技（卓目鸟学苑）- 专注软件测试菁英教育

标题: java_2021_03-16_代金鑫 [打印本页]

作者: 心向未来 时间: 2021-3-16 19:55
标题: java_2021_03-16_代金鑫

package equ.view;

顶层容器，从JFrame继承

public class MainView extends JFrame {

private static Object TableModel;

JTextField searchText; // 搜索前面的输入框

static JTable table ; // 表格

//在构造方法中绘制页面

public MainView(){

// 设备窗口的标题

setTitle("设备管理系统");

//把中间层容器加到顶层容器上

add(northPanel(), BorderLayout.NORTH);

add(centerPanel(),BorderLayout.CENTER);

// 设置窗口的位置，xy是坐标，相对于屏幕左上角的位置

setBounds(200,200,1200,600);

//将窗口设置为可见

setVisible(true);

}

北边的部分，主要包括增删改查的按钮

private JPanel northPanel(){

JPanel north = new JPanel();

//组件的布局，五个按钮放置1行。5列

GridLayout grid = new GridLayout(1,5);

north.setLayout(grid);

JButton addButton = new JButton("添加");

addButton.addActionListener(new AddAction());

north.add(addButton); // 按钮放到JPanel上

JButton modifyButton = new JButton("修改");

modifyButton.addActionListener(new ModifyAction());

north.add(modifyButton);

JButton deleteButton = new JButton("删除");

deleteButton.addActionListener(new DeleteAction());

north.add(deleteButton);

//搜索的输入框

searchText = new JTextField();

searchText.addActionListener(new SearchTextAction());

north.add(searchText);

JButton searchButton = new JButton("搜索");

searchButton.addActionListener(new SearchAction());

north.add(searchButton);

return north;

}

中间的部分，设备的表格

private JPanel centerPanel(){

JPanel center = new JPanel();

GridLayout grid = new GridLayout(1,1);

center.setLayout(grid);

//表格

table = new JTable();

//设置单元格的属性

DefaultTableCellRenderer cr = new DefaultTableCellRenderer();

//设置居中对齐

cr.setHorizontalAlignment(JLabel.CENTER);

// 单元格的属性与表格绑定到一起

table.setDefaultRenderer(Object.class,cr);

//给表格中填充数据

refreshTable(table, SqliteDb.queryAll());

// JScrollpane是滚动面板，横向纵向的滚动条

JScrollPane jScrollPane = new JScrollPane(table);

center.add(jScrollPane);

return center;

}

刷新表格

java.util.List<Equ> equs

public static void refreshTable(JTable table, java.util.List<Equ> equs) {

String[] biaotou = {"编号","设备名字","位置","是否报废",

"购买时间","报废时间","维修记录"};

// 将列表转成二维数组

String[][] equArrays = SqliteDb.list2Arrays(equs);

//JTable 用TableModle来报存数据

TableModel tm = table.getModel();

//TableModel 是接口， DefaultTableModel是它的实现类。

//TableModel

DefaultTableModel dtm = (DefaultTableModel) tm;

//填充数据

dtm.setDataVector(equArrays,biaotou);

}

添加按钮的功能

private class AddAction implements ActionListener{

@Override

public void actionPerformed(ActionEvent e) {

// System.out.println("你点击了添加设备的按钮！");

// 打开添加设备的页面

new AddView();

}

修改按钮的功能

private class ModifyAction implements ActionListener{

@Override

public void actionPerformed(ActionEvent e) {

//System.out.println("你点击了修改设备的按钮！");

//获取当前选中行

int row = table.getSelectedRow();

//获取该行的设备信息

String id = (String)table.getValueAt(row,0);

String name = (String)table.getValueAt(row,1);

String location = (String)table.getValueAt(row,2);

String baoFei = (String)table.getValueAt(row,3);

String buyTime = (String)table.getValueAt(row,4);

String baoFeiTime = (String)table.getValueAt(row,5);

String record = (String)table.getValueAt(row,6);

//构造设备对象

Equ equ = new Equ(id,name,location,baoFei,buyTime,baoFeiTime,record);

//打开修改的页面

new ModifyView(equ);

}

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