JTextPane实现文字图片插入、发送
2017-04-05 14:47阅读：
其实不需要JEditorPane，Java提供的JTextPane本身就可以实现文字、图片同时插入，并发送。这里界面设计与功能实现分成2个文件来写。界面是用Netbeans画的，里面有2个JTextPane和2个JButton，文件为ImageTextPaneForm.java。功能实现的类为ImageTextPaneController.java：
ImageTextPaneController.java
import java.awt.event.ActionEvent; import
javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JFileChooser;
import javax.swing.JFrame;
import javax.swing.JTextPane;
import javax.swing.text.BadLocationException;
import javax.swing.text.Element;
import javax.swing.text.StyleConstants;
import javax.swing.text.StyledDocument;
public class ImageTextPaneController {
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public static void add2(JTextPane inputJTpane,
JTextPane
outputJTpane,
JButton insertButton,
JButton senon,
JFrame jf){
insertButton.addActionListener((ActionEvent e) -> {
JFileChooser
chooser = new JFileChooser();
chooser.setFileSelectionMode(JFileChooser.FILES_ONLY);
int result =
chooser.showOpenDialog(jf);
if (result ==
JFileChooser.APPROVE_OPTION) {
inputJTpane.insertIcon(new
ImageIcon(chooser.getSelectedFile().toString()));
}
});
senon.addActionListener((ActionEvent e) -> {
StyledDocument inputSDoc = inputJTpane.getStyledDocument();
//获取读取的StyledDocument
StyledDocument outSDoc = outputJTpane.getStyledDocument();
//获取欲输出的StyledDocument
for (int i =
0; i < inputSDoc.getLength(); i++) {
//遍历读取的StyledDocument
if
(inputSDoc.getCharacterElement(i).getName().equals("icon")) {
//如果发现是icon元素，那么：
Element ele =
inputSDoc.getCharacterElement(i);
ImageIcon icon = (ImageIcon)
StyleConstants.getIcon(ele.getAttributes());
outputJTpane.insertIcon(new
ImageIcon(icon.toString()));//插入icon元素
} else {//如果不是icon（可以判断是文字，因为目前只有图片元素插入）
try {
String s =
inputSDoc.getText(i, 1);
outSDoc.insertString(outputJTpane.getCaretPosition(), s,
null);//从光标处插入文字
} catch (BadLocationException e1)
{
e1.printStackTrace();
}
}
}
});
//===========End of
senon
}
}
效果如下图：
生成的界面文件：
public class ImageTextPaneForm extends javax.swing.JFrame
{
private static final long serialVersionUID =
1L;
public ImageTextPaneForm() {
initComponents();
ImageTextPaneController.add2(jTextPane2, jTextPane1, jButton2,
jButton1, this);
}
@SuppressWarnings("unchecked")
// <editor-fold defaultstate="collapsed"
desc="Generated Code">
private void initComponents() {
jSplitPane1 = new
;
jScrollPane1 = new
;
jTextPane1 = new
;
jPanel1 = new ;
jScrollPane2 = new
;
jTextPane2 = new
;
jButton2 = new ;
jButton1 = new ;
setDefaultCloseOperation(;
jSplitPane1.setOrientation(;
jSplitPane1.setResizeWeight(0.8);
jScrollPane1.setViewportView(jTextPane1);
jSplitPane1.setTopComponent(jScrollPane1);
jScrollPane2.setViewportView(jTextPane2);
javax.swing.GroupLayout
jPanel1Layout = new ;
jPanel1.setLayout(jPanel1Layout);
jPanel1Layout.setHorizontalGroup(
jPanel1Layout.createParallelGroup(
.addComponent(jScrollPane2, javax.swing.GroupLayout.DEFAULT_SIZE,
345, Short.MAX_VALUE)
);
jPanel1Layout.setVerticalGroup(
jPanel1Layout.createParallelGroup(
.addComponent(jScrollPane2, javax.swing.GroupLayout.DEFAULT_SIZE,
186, Short.MAX_VALUE)
);
jSplitPane1.setRightComponent(jPanel1);
jButton2.setText("插入图片");
jButton1.setText("发送");
javax.swing.GroupLayout
layout = new ;
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(
.addGroup(layout.createSequentialGroup()
.addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE,
Short.MAX_VALUE)
.addComponent(jButton2,
javax.swing.GroupLayout.PREFERRED_SIZE, 97,
.addPreferredGap(
.addComponent(jButton1,
javax.swing.GroupLayout.PREFERRED_SIZE, 105,
.addComponent(jSplitPane1)
);
layout.setVerticalGroup(
layout.createParallelGroup(
.addGroup(javax.swing.GroupLayout.Alignment.TRAILING,
layout.createSequentialGroup()
.addComponent(jSplitPane1,
javax.swing.GroupLayout.DEFAULT_SIZE, 435,
Short.MAX_VALUE)
.addPreferredGap(
.addGroup(layout.createParallelGroup(
.addComponent(jButton1)
.addComponent(jButton2)))
);
pack();
}// </editor-fold>
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