java - 读取文件时如何跳过某些文本区域？

Question

我正在读取 .txt 文件，并希望在将结果放入 StringBuilder 时跳过此文本中的代码列表。

文本示例:

The following Bicycle class is one possible implementation of a bicycle:

/* The example of Bicycle class class Bicycle {

int cadence = 0;

int speed = 0; } */

这就是我可以得出的结果:

public class Main {

public static BufferedReader in;
public static StringBuilder stringBuilder = new StringBuilder();

public static void main(String[] args) {

    String input = "input_text.txt";

    try {
        in = new BufferedReader(new FileReader(input));
    } catch (FileNotFoundException e) {
        e.printStackTrace();
    }

    String inputText;

    try {
        while ((inputText = in.readLine()) != null) {
            if (inputText.startsWith("/*")) {

// The problem is there:

                while (!inputText.endsWith("*/")) {
                    int lengthLine = inputText.length();
                    in.skip((long)lengthLine);
                }
            }
                stringBuilder.append(inputText);

        }
    } catch (IOException e) {
        e.printStackTrace();
    }

我遇到了无限 while 循环，无法跳转到下一行。

Answer 1

您永远不会在 while 循环中重置 inputText 的值，因此它永远不会以 */ 结束，从而导致无限循环。此外，您不需要使用 skip() 方法，只需读取行直到遇到 */ 即可。尝试将循环更改为:

 while (!inputText.endsWith("*/")) {       
        String temp = in.readLine();
        if(temp == null) {break;}
        inputText = temp;                                                           
 }

输出:(打印StringBuilder)

The following Bicycle class is one possible implementation of a bicycle: