public class InterfaceCallExample extends JFrame implements ActionListener { private static final long serialVersionUID = 1L; private JButton callButton; private JTable resultTable; private DefaultTableModel tableModel; public InterfaceCallExample() { super("Interface Call Example"); setSize(400, 300); setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); JPanel panel = new JPanel(); callButton = new JButton("查看数据"); callButton.addActionListener(this); panel.add(callButton); add(panel, BorderLayout.NORTH); tableModel = new DefaultTableModel(); tableModel.addColumn("id"); tableModel.addColumn("材料类型"); tableModel.addColumn("状态"); tableModel.addColumn("创建时间"); tableModel.addColumn("更改时间"); resultTable = new JTable(tableModel); add(new JScrollPane(resultTable), BorderLayout.CENTER); } public static void main(String[] args) { InterfaceCallExample example = new InterfaceCallExample(); example.setVisible(true); } @Override public void actionPerformed(ActionEvent e) { if (e.getSource() == callButton) { try { URL url = new URL("http://101.34.120.182:8081/wnapp/productType/getTypeId?category=1&status=0&type="); HttpURLConnection conn = (HttpURLConnection) url.openConnection(); conn.setRequestMethod("GET"); BufferedReader reader = new BufferedReader(new InputStreamReader(conn.getInputStream())); String s = reader.readLine(); JSONObject jsonObject = new JSONObject(); JSONObject object = JSONObject.parseObject(s); Object o = object.get("data"); JSONObject object1 = JSONObject.parseObject(o.toString()); ArrayList<Map<String,Object>> list = (ArrayList<Map<String,Object>>) object1.get("list"); for (Map<String,Object> map : list){ String id = map.get("id").toString(); String titleName = map.get("titleName").toString(); String status = map.get("status").toString(); String createTime = map.get("createTime").toString(); String updateTime = map.get("updateTime").toString(); ArrayList<String> strings = new ArrayList<>(); strings.add(id); strings.add(titleName); strings.add(status); strings.add(createTime); strings.add(updateTime); String[] data = strings.toString().replace("[","").replace("]","").split(","); tableModel.addRow(data); } reader.close(); } catch (Exception ex) { ex.printStackTrace(); } } } } 以上代码调用接口获取数据后，页面只展示最新的数据，要如何修改

你可以先清空原来的表格数据，再将获取到的所有数据都添加到表格中，这样就可以展示所有数据了。可以在 `actionPerformed` 方法中的 `if (e.getSource() == callButton)` 条件下方加上以下代码：

// 清空原来的表格数据
tableModel.setRowCount(0);

// 添加新的数据到表格中
for (Map<String,Object> map : list){
    String id = map.get("id").toString();
    String titleName = map.get("titleName").toString();
    String status = map.get("status").toString();
    String createTime = map.get("createTime").toString();
    String updateTime = map.get("updateTime").toString();
    ArrayList<String> strings = new ArrayList<>();
    strings.add(id);
    strings.add(titleName);
    strings.add(status);
    strings.add(createTime);
    strings.add(updateTime);
    String[] data = strings.toString().replace("[","").replace("]","").split(",");
    tableModel.addRow(data);
}

这样修改后，每次点击查看数据按钮都会清空表格并重新展示最新的数据。