import net.htmlparser.jericho.*;
import java.util.*;
import java.awt.BorderLayout;
import java.io.*;
import java.net.*;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
public class RenderToText extends JFrame {
static JTextArea _resultArea = new JTextArea(100, 100);
JScrollPane scrollingArea = new JScrollPane(_resultArea);
private final static String newline = "\n";
public RenderToText(){
_resultArea.setEditable(false);
//Starting to write files
try{
FileReader fr = new FileReader(
"C:\\Users\\user\\fypworkspace\\FYP\\abc.txt");
BufferedReader textReader = new BufferedReader(fr);
// for each URL, process the URL and render the HTML file
int numberofURL = 11;
String[] URL = new String[numberofURL];
int a;
// For each URL, assign one text file to store the contents
// for each URL, extract the URL contents
for (a = 0; a < numberofURL; a++) {
for (int i = 0; i < numberofURL; i++) {
URL[a] = textReader.readLine();
try{
try {
try {
// Render the text from the HTML file
String sourceUrlString = URL[a];
System.out.println("Using argument of \""
+ sourceUrlString + '"');
if (sourceUrlString.indexOf(':') == -1)
sourceUrlString = "file:" + sourceUrlString;
Source source = new Source(new URL(sourceUrlString));
String renderedText = source.getRenderer()
.toString();
_resultArea.append("\nSimple rendering of the HTML document:\n" + newline);
_resultArea.append(renderedText+ newline);
// Write the rendered text to a text file
String filename = ("abc" + i + ".txt");
Writer output = null;
String text = renderedText;
File file = new File(filename);
output = new BufferedWriter(new FileWriter(file));
output.write(text);
output.close();
_resultArea.append("Your file has been written"+ newline);
// Count the number of words available in the
// rendered text.
BufferedReader br = new BufferedReader(
new FileReader(
"C:\\Users\\user\\fypworkspace\\TextRenderer\\abc"
+ i + ".txt"));
String line = "", str = "";
int count = 0;
while ((line = br.readLine()) != null) {
str += line + " ";
}
StringTokenizer st = new StringTokenizer(str);
while (st.hasMoreTokens()) {
@SuppressWarnings("unused")
String s = st.nextToken();
count++;
}
_resultArea.append("File has " + count + " words."+ newline);
} catch (UnknownServiceException ex) {
System.out.println("The following url cannot be processed"+ newline);
}
System.out.println("\n");
System.out.println("\n");
System.out.println("\n");
} catch (NullPointerException ex) {
System.out.println("End of URL");
System.exit(0);
}
}catch(IOException ex){
System.out.println("The following url cannot be processed due to the need to login");
}
}
}
}catch (IOException e1) {
}
JPanel content = new JPanel();
content.setLayout(new BorderLayout());
content.add(scrollingArea, BorderLayout.CENTER);
this.setContentPane(content);
this.setTitle("TextAreaDemo B");
this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
this.pack();
}
public static void main(String[] args) throws IOException {
JFrame win = new RenderToText();
win.setVisible(true);
}
}
此代码假设显示JTextArea带有此程序输出的 a。该程序呈现 html 页面并提取其内容。它很奇怪，因为我可以运行它并在控制台中显示结果，但是，我无法在Jtext Area. 我在哪里失踪？
要打印的文件假设是这行代码：
_resultArea.append(renderedText+ newline);
但是，在执行时，JTextArea不会出现。