Rebuild code and add default filter.

burp/file/FileExists.java

@@ -0,0 +1,18 @@
+package burp.file;
+
+import java.io.File;
+
+public class FileExists {
+	
+	/*
+	 * 判断文件是否存在
+	 */
+	public Boolean fileExists(String fileName) {
+		 File file = new File(fileName);
+		 if(file.exists()){
+			 return true;
+		 }
+		 return false;
+	}
+	
+}

burp/file/ReadFile.java

@@ -0,0 +1,36 @@
+package burp.file;
+
+import java.io.BufferedReader;
+import java.io.File;
+import java.io.FileReader;
+import java.io.IOException;
+
+public class ReadFile {
+	/*
+	 * 获取文件内容
+	 */
+	public String readFileContent(String fileName) {
+	    File file = new File(fileName);
+	    BufferedReader reader = null;
+	    StringBuffer sbf = new StringBuffer();
+	    try {
+	        reader = new BufferedReader(new FileReader(file));
+	        String tempStr;
+	        while ((tempStr = reader.readLine()) != null) {
+	            sbf.append(tempStr);
+	        }
+	        reader.close();
+	        return sbf.toString();
+	    } catch (IOException e) {
+	    } finally {
+	        if (reader != null) {
+	            try {
+	                reader.close();
+	            } catch (IOException err) {
+	                err.printStackTrace();
+	            }
+	        }
+	    }
+	    return sbf.toString();
+	}
+}

burp/file/RemoveContent.java

@@ -0,0 +1,22 @@
+package burp.file;
+
+import javax.swing.JOptionPane;
+
+import org.json.JSONObject;
+
+public class RemoveContent {
+	WriteFile w = new WriteFile();
+	ReadFile r = new ReadFile();
+	/*
+	 * 删除某文件内容
+	 */
+	public void removeFileContent(String key, String configFilePath) {
+		String jsonStr = r.readFileContent(configFilePath);
+		JSONObject jsonObj = new JSONObject(jsonStr);
+		jsonObj.remove(key);
+		
+		if (w.writeFileContent(configFilePath, jsonObj.toString())) {
+			JOptionPane.showMessageDialog(null, "Delete Successfully!", "Info", JOptionPane.INFORMATION_MESSAGE);
+		}
+	}
+}

burp/file/WriteFile.java

@@ -0,0 +1,21 @@
+package burp.file;
+
+import java.io.BufferedWriter;
+import java.io.FileWriter;
+import java.io.IOException;
+
+public class WriteFile {
+	/*
+	 * 写入文件内容
+	 */
+	public boolean writeFileContent(String fileName, String fileContent) {
+		try {
+			BufferedWriter out = new BufferedWriter(new FileWriter(fileName));
+			out.write(fileContent);
+			out.close();
+			return true;
+		} catch (IOException e) {
+			return false;
+		}
+	}
+}