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(); } } } } 改成可以根据输入的条件进行查询

要实现根据输入的条件进行查询，你需要在界面中添加输入框和按钮，并在按钮的点击事件中获取输入框中的内容，并将其作为请求参数发送给后端接口。

下面是修改后的代码示例：

public class InterfaceCallExample extends JFrame implements ActionListener {
    private static final long serialVersionUID = 1L;
    private JButton callButton;
    private JTable resultTable;
    private DefaultTableModel tableModel;
    private JTextField categoryField, statusField, typeField;

    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);

        JLabel categoryLabel = new JLabel("材料类型：");
        categoryField = new JTextField(10);
        JLabel statusLabel = new JLabel("状态：");
        statusField = new JTextField(10);
        JLabel typeLabel = new JLabel("类型：");
        typeField = new JTextField(10);

        panel.add(categoryLabel);
        panel.add(categoryField);
        panel.add(statusLabel);
        panel.add(statusField);
        panel.add(typeLabel);
        panel.add(typeField);

        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 {
                String category = categoryField.getText();
                String status = statusField.getText();
                String type = typeField.getText();

                String urlStr = "http://101.34.120.182:8081/wnapp/productType/getTypeId?";
                if (!category.isEmpty()) {
                    urlStr += "category=" + URLEncoder.encode(category, "UTF-8") + "&";
                }
                if (!status.isEmpty()) {
                    urlStr += "status=" + URLEncoder.encode(status, "UTF-8") + "&";
                }
                if (!type.isEmpty()) {
                    urlStr += "type=" + URLEncoder.encode(type, "UTF-8") + "&";
                }

                URL url = new URL(urlStr);
                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 statusStr = 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(statusStr);
                    strings.add(createTime);
                    strings.add(updateTime);
                    String[] data = strings.toString().replace("[","").replace("]","").split(",");
                    tableModel.addRow(data);
                }
                reader.close();
            } catch (Exception ex) {
                ex.printStackTrace();
            }
        }
    }
}

修改后的代码中，我们添加了三个文本框和对应的标签，用于输入查询条件。在按钮的点击事件中，我们获取这些文本框中的内容，并将其作为请求参数发送给后端接口。如果某个文本框为空，则不包含对应的查询条件。注意，我们还使用了 `URLEncoder.encode()` 方法对参数进行编码，以避免传输过程中出现空格等特殊字符导致的错误。