Question

我的Java应用程序上有一个表单，主要是为用户提供数据库查询中的数据列表。一个想法是使用表格并使用我的结果集中的数据填充每一行。然而，在设计UI时，我的团队和我认为它看起来并不像我们想要的那样顺畅。所以我们认为我们会考虑在面板中创建结果的自定义视图。我们希望它看起来像： Desired custom view

因此，对于结果集的每个查询，它将看起来像这样，而不是表的行。

我遇到的问题是编码。我花了很多时间来研究如何将组件添加到JForm中。因为netbeans似乎默认将ui设置为grouplayout？所以我研究了如何使用以下方法添加1个面板：

javax.swing.JLabel idLbl;
 javax.swing.JLabel jLabel1;
 javax.swing.JLabel jLabel3;
 javax.swing.JLabel jLabel5;
 javax.swing.JLabel jLabel7;
 javax.swing.JPanel jPanel1;
 javax.swing.JLabel prefContactLbl;
 javax.swing.JLabel propertyLabel;
    jPanel1 = new javax.swing.JPanel();
    jLabel1 = new javax.swing.JLabel();
    idLbl = new javax.swing.JLabel();
    jLabel3 = new javax.swing.JLabel();
    propertyLabel = new javax.swing.JLabel();
    jLabel5 = new javax.swing.JLabel();
    contactLabel = new javax.swing.JLabel();
    jLabel7 = new javax.swing.JLabel();
    prefContactLbl = new javax.swing.JLabel();

    jPanel1.setBorder(javax.swing.BorderFactory.createEtchedBorder());

    jLabel1.setFont(new java.awt.Font("Tahoma", 1, 12));
    jLabel1.setText("Enquiry Id:");
    jLabel1.setName("jLabel"+i);

    idLbl.setText("jLabel2");

    jLabel3.setFont(new java.awt.Font("Tahoma", 1, 12));
    jLabel3.setText("Property:");

    propertyLabel.setText("A property Address in some town with a postcode");

    jLabel5.setFont(new java.awt.Font("Tahoma", 1, 12));
    jLabel5.setText("Contact:");

    contactLabel.setText("A Persons Name ( 01010100011)");

    jLabel7.setFont(new java.awt.Font("Tahoma", 1, 12));
    jLabel7.setText("Prefered Contact:");

    prefContactLbl.setText("Email/Phone");

    javax.swing.GroupLayout jPanel1Layout = new javax.swing.GroupLayout(jPanel1);
    jPanel1.setLayout(jPanel1Layout);
    jPanel1Layout.setHorizontalGroup(
        jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
        .addGroup(jPanel1Layout.createSequentialGroup()
            .addContainerGap()
            .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                .addGroup(jPanel1Layout.createSequentialGroup()
                    .addComponent(jLabel1)
                    .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                    .addComponent(idLbl)
                    .addGap(18, 18, 18)
                    .addComponent(jLabel3)
                    .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                    .addComponent(propertyLabel))
                .addGroup(jPanel1Layout.createSequentialGroup()
                    .addComponent(jLabel7)
                    .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                    .addComponent(prefContactLbl)
                    .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
                    .addComponent(jLabel5)
                    .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                    .addComponent(contactLabel)))
            .addContainerGap(20, Short.MAX_VALUE))
    );
    jPanel1Layout.setVerticalGroup(
        jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
        .addGroup(jPanel1Layout.createSequentialGroup()
            .addContainerGap()
            .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                .addComponent(jLabel1)
                .addComponent(idLbl)
                .addComponent(jLabel3)
                .addComponent(propertyLabel))
            .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
            .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                .addComponent(jLabel7)
                .addComponent(prefContactLbl)
                .addComponent(jLabel5)
                .addComponent(contactLabel))
            .addContainerGap())
    );

    javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
     getContentPane().setLayout(layout);
    layout.setHorizontalGroup(
        layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
        .addGroup(layout.createSequentialGroup()
            .addGap(10 , 10, 10)
            .addComponent(jPanel1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                 .addContainerGap(100, Short.MAX_VALUE))
    );

    layout.setVerticalGroup(
        layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
        .addGroup(layout.createSequentialGroup()
            .addContainerGap()
            .addComponent(jPanel1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
            .addContainerGap(570, Short.MAX_VALUE))
    );

我遇到的主要问题是动态添加1个以上我完全不确定如何去做，因为我能找到的就是设置布局而不是更新它。我不能设置多少.addcomponent作为它的动态。真的很困惑如何解决这个问题。

很抱歉，如果很难弄清楚我想要的东西更容易想到它，但把它写成文字是一场噩梦。

Answer 1

通过更多地封装东西开始将使您的生活更轻松。创建JPanel的子类，表示一个查询条目的视图：EnquiryPanel。 EnquiryPanel中包含的代码几乎与您在上面粘贴的内容相匹配，但它会从您传入的构造函数参数中填充，并且它本身就是JPanel。

public class EnquiryPanel extends JPanel {
   public EnquiryPanel(Result dbResult) {
     // your layout code from above, but this is the content pane and
    // the fields are populated from the dbResult object
   }
}

然后，您可以将EnquiryPanel的实例动态添加到容器面板，该容器面板的布局是垂直BoxLayout。我在下面称这个容器面板ResultsPanel。

public class ResultsPanel extends JPanel {
  public ResultsPanel() {
    // Layout our contents vertically
    BoxLayout layout = new BoxLayout(this, BoxLayout.Y_AXIS);
    this.setLayout(layout);
  }
  // method to iterate over the results from the database
  // construct an EnquiryPanel and add that EnquiryPanel to ourselves
  public void layoutEnquiryResults(ResultCollection results) {
     for (Result result : results) {
        EnquiryPanel eqPanel = new EnquiryPanel(result);
        add(eqPanel);
     }
     revalidate();
  }
}

最后，您需要向ResultsPanel添加JFrame的实例。

ResultsPanel resultsPanel = new ResultsPanel();
resultsPanel.layoutEnquiryResults(myResultSet);
getContentPane().add(resultsPanel);

Answer 2

不要使用GroupLayout。这些限制通常太难以手动设置。

相反，我可能会使用垂直BoxLayout。添加每个面板后，不要忘记重新验证（）父面板。

动态地将JPanel添加到Jframe

2 个答案: