java修改读取本地文件，并替换内容

• Z时代
• 2024-01-10
• 分类：综合

public class FileModifyTest {
    public static void main(String[] args) {
        String filePath = "/Users/mac/Desktop/今日任务/1218-plan.txt";
        String outPath = "/Users/mac/Desktop/今日任务/1218-plan.txt";
        try {
            autoReplace(filePath,outPath);
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
    public static  void autoReplace(String filePath, String outPath) throws IOException {
        File file = new File(filePath);
        Long fileLength = file.length();
        byte[] fileContext = new byte[fileLength.intValue()];
        FileInputStream in = new FileInputStream(filePath);
        in.read(fileContext);
        in.close();
        String str = new String(fileContext);
        str = str.replace("1.车牌预警bug修复", ".车牌预警bug修复");
        PrintWriter out = new PrintWriter(outPath);
        out.write(str.toCharArray());
        out.flush();
        out.close();
    }
}

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