我有一些代码:
package main;
import java.awt.EventQueue;
import java.awt.Font;
import java.io.StringWriter;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.border.EmptyBorder;
import javax.swing.text.DefaultCaret;
import javax.swing.text.html.HTMLDocument;
import javax.swing.text.html.HTMLEditorKit;
import javax.swing.text.html.StyleSheet;
import javax.swing.GroupLayout;
import javax.swing.GroupLayout.Alignment;
import javax.swing.JScrollPane;
import javax.swing.JTextPane;
public class LogConsole extends JFrame {
private static final long serialVersionUID = 1L;
private JPanel contentPane;
private JTextPane logPane;
private HTMLDocument logDoc;
private HTMLEditorKit logKit;
/**
* Launch the application.
*/
public static void main(String[] args) {
EventQueue.invokeLater(new Runnable() {
public void run() {
try {
LogConsole test = new LogConsole();
test.setVisible(true);
test.log("<span>Hello 1</span><br/>"); //Test 1
test.log("<span>Hello 2</span><br/>"); //Test 2
test.log("<span>Hello 3</span><br/>"); //Test 3
test.log("<span>Hello </span>"); //Test 4
test.log("<span>world!</span>"); //Test 5
test.printHTML();
} catch (Exception e) {
e.printStackTrace();
}
}
});
}
/**
* Log some data...
* @param str
*/
public void log(String s){
s = s.replaceAll("\n", "<br/>");
try {
logKit.insertHTML(logDoc, logDoc.getLength(), s, 0, 0, null);
} catch (Exception e) {
e.printStackTrace();
}
}
public void printHTML(){
try{
StringWriter writer = new StringWriter();
logKit.write(writer, logDoc, 0, logDoc.getLength());
String s = writer.toString();
System.out.println(s);
} catch (Exception ex) {
ex.printStackTrace();
}
}
public void clearLog(){
try {
logPane.setText("");
} catch (Exception e) {
e.printStackTrace();
}
}
/**
* Create the frame.
*/
public LogConsole() {
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setBounds(100, 100, 450, 300);
contentPane = new JPanel();
contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
setContentPane(contentPane);
JScrollPane scrollPane = new JScrollPane();
GroupLayout gl_contentPane = new GroupLayout(contentPane);
gl_contentPane.setHorizontalGroup(
gl_contentPane.createParallelGroup(Alignment.LEADING)
.addGroup(gl_contentPane.createSequentialGroup()
.addContainerGap()
.addComponent(scrollPane, GroupLayout.DEFAULT_SIZE, 404, Short.MAX_VALUE)
.addContainerGap())
);
gl_contentPane.setVerticalGroup(
gl_contentPane.createParallelGroup(Alignment.LEADING)
.addGroup(gl_contentPane.createSequentialGroup()
.addContainerGap()
.addComponent(scrollPane, GroupLayout.DEFAULT_SIZE, 229, Short.MAX_VALUE)
.addContainerGap())
);
logPane = new JTextPane();
logPane.setContentType("text/html");
logPane.setEditable(false);
scrollPane.setViewportView(logPane);
contentPane.setLayout(gl_contentPane);
DefaultCaret caret = (DefaultCaret)logPane.getCaret();
caret.setUpdatePolicy(DefaultCaret.ALWAYS_UPDATE);
logDoc = (HTMLDocument) logPane.getDocument();
logKit = (HTMLEditorKit) logPane.getEditorKit();
Font font = new Font("Consolas", Font.PLAIN, 14);
String bodyRule = String.format("body{font-family:%s;font-size:%spt",
font.getFamily(), font.getSize());
StyleSheet style = logDoc.getStyleSheet();
style.addRule(bodyRule);
}
}
我想将一些数据从我的应用程序记录到JTextPane,但是我遇到了一些麻烦。
首先,当我在两个log()
语句上添加两个span标签时,它将在其之间放置新行(请参见Test4-Test5)。
所以我认为JTextPane不支持内联标签,并且所有标签都是块标签。
没关系,因为每行上的每个数据日志都非常“空闲”,
您无需在每个数据日志上添加“ <br/>”,但是我更愿意自己处理,
如果我插入3条log()
语句,在每个日志数据(测试1,2,3)的“ <br/>”中,
第1行分别写入“ Hello 1”和新行,并再次写入新行。
第2行仅写“ Hello 2”和一个新行
第3行只写“ Hello 2”和一个新行
但是Test1和Test 2具有相同的语句形式,并且产生两种不同的方式,为什么呢?
如果我将测试2更改为:
test.log("<span>Hello 2</span>"); //Test 2
它不会改变结果!!!
谁能为我解释这些问题?
以及如何解决这些问题。
谢谢
问题不是插入跨度,而是您使用insertHTML()创建了周围的paragrapph元素。
通话正常,不会产生2条线路
test.log("<span>Hello </span><span>World</span>");
试试这个
public void log(String s){
s = s.replaceAll("\n", "<br/>");
try {
// logKit.insertHTML(logDoc, logDoc.getLength(), s, 0, 0, null);
logDoc.insertAfterEnd(logDoc.getCharacterElement(logDoc.getLength()), s);
} catch (Exception e) {
e.printStackTrace();
}
}
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