1. //根据给定的正则表达式，删除匹配字符串
   
2. import java.awt.BorderLayout;
   
3. import java.awt.EventQueue;
   
4. import java.awt.Toolkit;
   
5. 
   
6. import javax.swing.JFrame;
   
7. import javax.swing.JPanel;
   
8. import javax.swing.border.EmptyBorder;
   
9. import javax.swing.filechooser.FileNameExtensionFilter;
   
10. import javax.swing.JLabel;
    
11. import java.awt.FlowLayout;
    
12. 
    
13. import javax.swing.JOptionPane;
    
14. import javax.swing.JTextField;
    
15. import javax.swing.JFileChooser;
    
16. import javax.swing.JButton;
    
17. import java.awt.event.ActionListener;
    
18. import java.awt.event.ActionEvent;
    
19. import java.io.File;
    
20. import java.io.FileNotFoundException;
    
21. import java.io.FileWriter;
    
22. import java.io.IOException;
    
23. import java.util.Scanner;
    
24. 
    
25. 
    
26. public class RemoveSplChar extends JFrame {
    
27. 
    
28. /**
    
29. *
    
30. */
    
31. private static final long serialVersionUID = -2003245766738195271L;
    
32. private JPanel contentPane;
    
33. private JTextField textField;
    
34. private JTextField textField_1;
    
35. private JTextField textField_2;
    
36. private File sourceFile = null;
    
37. private File objectFile = null;
    
38. private Scanner scan=null;
    
39. private Scanner scanner=null;
    
40. 
    
41. public static void main(String[] args) {
    
42. EventQueue.invokeLater(new Runnable() {
    
43. public void run() {
    
44. try {
    
45. RemoveSplChar frame = new RemoveSplChar();
    
46. 
    
47. frame.setVisible(true);
    
48. } catch (Exception e) {
    
49. e.printStackTrace();
    
50. }
    
51. }
    
52. });
    
53. }
    
54. 
    
55. /**
    
56. * Create the frame.
    
57. */
    
58. public RemoveSplChar() {
    
59. setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    
60. setBounds(100, 100, 450, 300);
    
61. contentPane = new JPanel();
    
62. contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
    
63. contentPane.setLayout(new BorderLayout(0, 0));
    
64. setContentPane(contentPane);
    
65. setResizable(false);
    
66. 
    
67. JPanel panel = new JPanel();
    
68. contentPane.add(panel, BorderLayout.NORTH);
    
69. panel.setLayout(new FlowLayout(FlowLayout.CENTER, 5, 5));
    
70. 
    
71. JLabel label = new JLabel("\u8BF7\u9009\u62E9\u6587\u672C\uFF1A");
    
72. panel.add(label);
    
73. 
    
74. textField = new JTextField();
    
75. panel.add(textField);
    
76. textField.setColumns(10);
    
77. 
    
78. JButton button = new JButton("\u9009\u62E9\u6587\u4EF6");
    
79. button.addActionListener(new ActionListener() {
    
80. public void actionPerformed(ActionEvent e) {
    
81. JFileChooser chooser= new JFileChooser();
    
82. FileNameExtensionFilter filer = new FileNameExtensionFilter("txt","txt");
    
83. chooser.setFileFilter(filer);
    
84. chooser.setMultiSelectionEnabled(false);
    
85. int result = chooser.showOpenDialog(getContentPane());
    
86. if (result == JFileChooser.APPROVE_OPTION) {
    
87. sourceFile = chooser.getSelectedFile();
    
88. if (!sourceFile.getName().endsWith(".txt")) {
    
89. JOptionPane.showMessageDialog(getContentPane(), "请选择文本文件","",JOptionPane.WARNING_MESSAGE);
    
90. return;
    
91. }
    
92. textField.setText(sourceFile.getAbsolutePath());
    
93. }
    
94. 
    
95. }
    
96. });
    
97. panel.add(button);
    
98. 
    
99. JPanel panel_1 = new JPanel();
    
100. contentPane.add(panel_1, BorderLayout.CENTER);
     
101. panel_1.setLayout(new FlowLayout(FlowLayout.CENTER, 5, 45));
     
102. 
     
103. JLabel label_1 = new JLabel("\u8BF7\u9009\u62E9\u8F93\u51FA\u8DEF\u5F84\u53CA\u6587\u4EF6\u540D\uFF1A");
     
104. panel_1.add(label_1);
     
105. 
     
106. textField_1 = new JTextField();
     
107. panel_1.add(textField_1);
     
108. textField_1.setColumns(10);
     
109. 
     
110. JButton button_1 = new JButton("\u9009\u62E9\u8DEF\u5F84");
     
111. button_1.addActionListener(new ActionListener() {
     
112. public void actionPerformed(ActionEvent e) {
     
113. JFileChooser chooser= new JFileChooser();
     
114. FileNameExtensionFilter filer = new FileNameExtensionFilter(".txt","txt");
     
115. chooser.setFileFilter(filer);
     
116. chooser.setMultiSelectionEnabled(false);
     
117. int result = chooser.showSaveDialog(getContentPane());
     
118. if (result == JFileChooser.APPROVE_OPTION) {
     
119. objectFile = chooser.getSelectedFile();
     
120. // System.out.print(objectFile.getAbsolutePath());
     
121. if (!objectFile.getName().endsWith(".txt")) {
     
122. if (!objectFile.exists()) {
     
123. File temFile = new File(objectFile.getParent(),objectFile.getName()+".txt");
     
124. objectFile = temFile;
     
125. }
     
126. else {
     
127. JOptionPane.showMessageDialog(getContentPane(), "请选择文本文件或输入名称","",JOptionPane.WARNING_MESSAGE);
     
128. return;
     
129. }
     
130. }
     
131. textField_1.setText(objectFile.getAbsolutePath());
     
132. }
     
133. }
     
134. });
     
135. panel_1.add(button_1);
     
136. 
     
137. JPanel panel_2 = new JPanel();
     
138. contentPane.add(panel_2, BorderLayout.SOUTH);
     
139. panel_2.setLayout(new FlowLayout(FlowLayout.CENTER, 5, 15));
     
140. 
     
141. JLabel label_2 = new JLabel("\u8F93\u5165\u6B63\u5219\u8868\u8FBE\u5F0F\uFF1A");
     
142. panel_2.add(label_2);
     
143. 
     
144. textField_2 = new JTextField();
     
145. panel_2.add(textField_2);
     
146. textField_2.setColumns(10);
     
147. 
     
148. JButton button_2 = new JButton("\u8F6C\u6362");
     
149. button_2.addActionListener(new ActionListener() {
     
150. public void actionPerformed(ActionEvent e) {
     
151. String tem = textField_2.getText();
     
152. if (sourceFile == null) {
     
153. Toolkit.getDefaultToolkit().beep();
     
154. JOptionPane.showMessageDialog(getContentPane(), "请选择源文件","",JOptionPane.WARNING_MESSAGE);
     
155. return;
     
156. }
     
157. if (objectFile == null) {
     
158. Toolkit.getDefaultToolkit().beep();
     
159. JOptionPane.showMessageDialog(getContentPane(), "请选择目标文件","",JOptionPane.WARNING_MESSAGE);
     
160. return;
     
161. }
     
162. if (tem.equals("") ) {
     
163. Toolkit.getDefaultToolkit().beep();
     
164. JOptionPane.showMessageDialog(getContentPane(), "请输入正则表达式","",JOptionPane.WARNING_MESSAGE);
     
165. return;
     
166. }
     
167. if (!objectFile.exists()) {
     
168. try {
     
169. objectFile.createNewFile();
     
170. } catch (IOException e1) {
     
171. // TODO 自动生成的 catch 块
     
172. e1.printStackTrace();
     
173. }
     
174. }
     
175. FileWriter writer=null;
     
176. System.out.println(tem);
     
177. try {
     
178. writer = new FileWriter(objectFile);
     
179. scanner = new Scanner(sourceFile);
     
180. while(scanner.hasNextLine()) {
     
181. StringBuilder str = new StringBuilder(scanner.nextLine());
     
182. scan = new Scanner(str.toString());
     
183. String num = scan.findInLine(tem.trim());
     
184. while (num != null) {
     
185. str.delete(str.indexOf(num), str.indexOf(num)+num.length());
     
186. num = scan.findInLine(tem.trim());
     
187. }
     
188. str.append("\r\n");
     
189. writer.write(str.toString());
     
190. }
     
191. writer.flush();
     
192. } catch (FileNotFoundException e2) {
     
193. // TODO 自动生成的 catch 块
     
194. e2.printStackTrace();
     
195. } catch (IOException e3) {
     
196. // TODO 自动生成的 catch 块
     
197. e3.printStackTrace();
     
198. } finally {
     
199. try {
     
200. writer.close();
     
201. } catch (IOException e4) {
     
202. // TODO 自动生成的 catch 块
     
203. e4.printStackTrace();
     
204. }
     
205. scanner.close();
     
206. scan.close();
     
207. }
     
208. }
     
209. });
     
210. panel_2.add(button_2);
     
211. }
     
212. 
     
213. }
     

复制代码

在文本框中选择目标文件，在选择输出文件，然后在给定字符串或者是正则表达式，就可删除符合规则的字符串。这个代码是我之前手头上有个代码，但里面有许多注解的/*和行号掺杂到代码行里面，五百多行啊，要是手动删除那要搞好久，所以自己写了这代码来删除掉。效果还不错，代码还不怎么完善，有待继续改进

不错哦。楼主继续加油

不错！！！！！！