java - 包含图像的小程序在浏览器中运行时不会显示它们

Question

好吧，我的问题如下:我有一个像图片库一样的小程序。它在 Eclipse 中工作得很好，但是当我将它添加到我的网页并运行它时，图像不会显示，只会显示小程序的其余部分。

有人知道如何解决吗？

这是我将其添加到 HTML 中的方法:

<applet code="Sliki.class" width="600" height="330">
    <param name="image" value="0.jpg">
    <param name="image" value="1.jpg">
    <param name.... (rest rest of the photos).....
</applet>

这是我的 Java 代码:

import javax.swing.*;
import javax.swing.event.*;

import java.awt.*;
import java.util.*;
import java.io.*;

import javax.imageio.ImageIO;

public class Sliki extends JApplet implements ListSelectionListener {
 JFrame frmMain;
 JList lstBooks;
 JScrollPane scrollBooks;
 JLabel lblImage;
 ArrayList<String> books;
 Image image;

 public void init(){

     books = new ArrayList<String>();
     books.add("Razer Gaming PC - NZXT H440");
     books.add("Razer Gaming Laptop");
     books.add("Razer Mouse");

     books.add("iPhone 5s");
     books.add("Samsung Galaxy s4");
     books.add("iPhone 6s");

     books.add("The Alchemist");
     books.add("The Secret");
     books.add("The Power");

     books.add("Електрична гитара");
     books.add("Бас гитара");
     books.add("Флејта");

     books.add("21 Jump Street");
     books.add("Pineapple Express");
     books.add("Inception");

     books.add("No Limits");
     books.add("Nevermind");
     books.add("Speedfreak");

     books.add("Playstation 3");
     books.add("Starcraft 2");
     books.add("Warcraft 3");

     books.add("Superman");
     books.add("Spiderman");
     books.add("Batman");

     books.add("Dr. Martens");
     books.add("Nike Runners");
     books.add("Converse Sneakers");

     //frmMain = new JFrame();
     JPanel p1 = new JPanel(new GridLayout(0,2));
     //frmMain.setSize(600,330);
     //frmMain.setAlwaysOnTop(true);
     //frmMain.setLocationRelativeTo(null);
     //frmMain.setResizable(false);
     //frmMain.setLayout(new GridLayout());
     lstBooks = new JList(books.toArray());
     lstBooks.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
     lstBooks.addListSelectionListener(this);
     lstBooks.setVisibleRowCount(10);
     scrollBooks = new JScrollPane(lstBooks);
     p1.add(scrollBooks);
     //frmMain.getContentPane().add(scrollBooks);
     lblImage = new JLabel();
     p1.add(lblImage);
     add(p1, BorderLayout.CENTER);
     //frmMain.getContentPane().add(lblImage);
     //frmMain.setVisible(true);
    }



 public void valueChanged(ListSelectionEvent evt) {
     if (evt.getValueIsAdjusting() == false) {
     if (lstBooks.getSelectedIndex() != -1) {
     image = null;

     if(lstBooks.getSelectedIndex()==0)
         image = getImage(getCodeBase(), "0.jpg");
     else if(lstBooks.getSelectedIndex()==1)
         image = getImage(getCodeBase(), "1.jpg");
     else if(lstBooks.getSelectedIndex()==2)
         image = getImage(getCodeBase(), "2.jpg");

     else if(lstBooks.getSelectedIndex()==3)
         image = getImage(getCodeBase(), "3.jpg");
     else if(lstBooks.getSelectedIndex()==4)
         image = getImage(getCodeBase(), "4.jpg");
     else if(lstBooks.getSelectedIndex()==5)
         image = getImage(getCodeBase(), "5.jpg");

     else if(lstBooks.getSelectedIndex()==6)
         image = getImage(getCodeBase(), "6.jpg");
     else if(lstBooks.getSelectedIndex()==7)
         image = getImage(getCodeBase(), "7.jpg");
     else if(lstBooks.getSelectedIndex()==8)
         image = getImage(getCodeBase(), "8.jpg");

     else if(lstBooks.getSelectedIndex()==9)
         image = getImage(getCodeBase(), "9.jpg");
     else if(lstBooks.getSelectedIndex()==10)
         image = getImage(getCodeBase(), "10.jpg");
     else if(lstBooks.getSelectedIndex()==11)
         image = getImage(getCodeBase(), "11.jpg");

     else if(lstBooks.getSelectedIndex()==12)
         image = getImage(getCodeBase(), "12.jpg");
     else if(lstBooks.getSelectedIndex()==13)
         image = getImage(getCodeBase(), "13.jpg");
     else if(lstBooks.getSelectedIndex()==14)
         image = getImage(getCodeBase(), "14.jpg");

     else if(lstBooks.getSelectedIndex()==15)
         image = getImage(getCodeBase(), "15.jpg");
     else if(lstBooks.getSelectedIndex()==16)
         image = getImage(getCodeBase(), "16.jpg");
     else if(lstBooks.getSelectedIndex()==17)
         image = getImage(getCodeBase(), "17.jpg");

     else if(lstBooks.getSelectedIndex()==18)
         image = getImage(getCodeBase(), "18.jpg");
     else if(lstBooks.getSelectedIndex()==19)
         image = getImage(getCodeBase(), "19.jpg");
     else if(lstBooks.getSelectedIndex()==20)
         image = getImage(getCodeBase(), "20.jpg");

     else if(lstBooks.getSelectedIndex()==21)
         image = getImage(getCodeBase(), "21.jpg");
     else if(lstBooks.getSelectedIndex()==22)
         image = getImage(getCodeBase(), "22.jpg");
     else if(lstBooks.getSelectedIndex()==23)
         image = getImage(getCodeBase(), "23.jpg");

     else if(lstBooks.getSelectedIndex()==24)
         image = getImage(getCodeBase(), "24.jpg");
     else if(lstBooks.getSelectedIndex()==25)
         image = getImage(getCodeBase(), "25.jpg");
     else if(lstBooks.getSelectedIndex()==26)
         image = getImage(getCodeBase(), "26.jpg");
     image = image.getScaledInstance(297,298, Image.SCALE_SMOOTH);

     Icon ic = new ImageIcon(image);
     lblImage.setIcon(ic);

     }
     }
    }
    }

Answer 1

1. 确保将图像添加到您的 jar 文件中。
2. 我自己，在这种情况下，我通常使用 ImageIO.read(URL url) 或 ImageIO.read(InputStream inputStream) 来获取图像。
3. 所有这些 if/else block 不能简化为一行吗？ ""+ lstBooks.getSelectedIndex() + ".jpg"?