思路:首先读取文件内容,找到方法名后,然后追加内容。针对的是小文件处理方式。
String beanPath = System.getProperty("user.dir") + "/src/main/java/com/test.java"; try { BufferedReader bufReader = new BufferedReader( new InputStreamReader(new FileInputStream(new File(beanPath))));//数据流读取文件 StringBuffer strBuffer = new StringBuffer(); for (String temp = null; (temp = bufReader.readLine()) != null; temp = null) { strBuffer.append(temp); strBuffer.append(System.getProperty("line.separator"));//行与行之间的分割 if(temp.indexOf("test") != -1){//找到指定的方法 strBuffer.append("添加内容");//插入内容 strBuffer.append(System.getProperty("line.separator"));//行与行之间的分割 } } bufReader.close(); PrintWriter printWriter = new PrintWriter(beanPath);//替换后输出的文件位置 printWriter.write(strBuffer.toString().toCharArray()); printWriter.flush(); printWriter.close(); } catch (FileNotFoundException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); }
时间: 2024-10-27 16:19:08