小编Sco*_*oby的帖子

我需要在Table组件(JasperReports)中显示JRBeanCollectionDataSource数据.

这是我的模板,ShowPerson.jrxml文件:

<?xml version="1.0" encoding="UTF-8"?>
<jasperReport xmlns="http://jasperreports.sourceforge.net/jasperreports" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://jasperreports.sourceforge.net/jasperreports http://jasperreports.sourceforge.net/xsd/jasperreport.xsd" name="ShowPerson" pageWidth="612" pageHeight="792" whenNoDataType="NoDataSection" columnWidth="555" leftMargin="20" rightMargin="20" topMargin="20" bottomMargin="20" uuid="304c4c4e-c99a-4399-8081-748d3b7c0b8c">
    <style name="table">
        <box>
            <pen lineWidth="1.0" lineColor="#000000"/>
        </box>
    </style>
    <style name="table_TH" mode="Opaque" backcolor="#F0F8FF">
        <box>
            <pen lineWidth="0.5" lineColor="#000000"/>
        </box>
    </style>
    <style name="table_CH" mode="Opaque" backcolor="#BFE1FF">
        <box>
            <pen lineWidth="0.5" lineColor="#000000"/>
        </box>
    </style>
    <style name="table_TD" mode="Opaque" backcolor="#FFFFFF">
        <box>
            <pen lineWidth="0.5" lineColor="#000000"/>
        </box>
    </style>
    <subDataset name="Table Dataset 1" whenResourceMissingType="Empty" uuid="63b01547-bce2-47c9-ba15-666f94d11387">
        <queryString language="SQL">
            <![CDATA[]]>
        </queryString>
        <field name="name" class="java.lang.String"/>
        <field name="age" class="java.lang.Integer"/>
    </subDataset>
    <parameter name="INFO" class="java.lang.String"/>
    <title>
        <band …

我正在创建一个带有JMenu的JMenuBar并在每个JMenu中设置边距.但是给定的保证金在每个JMenu中都不起作用.如何正确设置JMenu的Margin？

 import javax.swing.*;

 public class JMenuDemo extends JFrame {

     private JMenuBar bar;

     public JMenuDemo() {
         super("Menu example");
         setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
         setVisible(true);

         initialize();
     }

     private void initialize() {
         bar = new JMenuBar();
         int menuHeight = 40;

         JMenu file = new JMenu("File");
         file.setPreferredSize(new java.awt.Dimension(50, menuHeight));
         file.setVerticalAlignment(javax.swing.SwingConstants.BOTTOM);
         file.setMargin(new java.awt.Insets(0, 0, 20, 0));

         JMenuItem newItem = new JMenuItem("New");
         file.add(newItem);
         JMenuItem openItem = new JMenuItem("Open");
         file.add(openItem);
         bar.add(file);

         JMenu test = new JMenu("Test");
         test.setPreferredSize(new java.awt.Dimension(60, menuHeight));
         test.setVerticalAlignment(javax.swing.SwingConstants.BOTTOM);
         test.setMargin(new java.awt.Insets(0, 0, 20, 0));
         bar.add(test);

         setJMenuBar(bar);

         getContentPane();
         setSize(400, 200);
     } …

我已尝试http://java-swing-tips.blogspot.com/2009/10/multiple-jbuttons-in-jtable-cell.html上的教程来生成下表。

现在，我需要创建一个表格，每行都有不同的按钮。请帮我。