Question

我有这个脚本，我想从HDK文本行中提取行到每行SDK文本行

#! /bin/sh
# ==================================================================
#  ______                           __     _____
# /_  __/___  ____ ___  _________ _/ /_   /__  /
#  / / / __ \/ __ `__ \/ ___/ __ `/ __/     / /
# / / / /_/ / / / / / / /__/ /_/ / /_      / /
#/_/  \____/_/ /_/ /_/\___/\__,_/\__/     /_/

HDK 
# Multi-instance Apache Tomcat installation with a focus
# on best-practices as defined by Apache, SpringSource, and MuleSoft
# and enterprise use with large-scale deployments.
# Credits:
#       Google -> Couldn't survive without it
#       Stackoverflow.com -> Community support
#       SpringSource -> Specifically best-practices and seminars (Expert Series)
SDK 
# Based On:
#       http://www.springsource.com/files/uploads/tomcat/tomcatx-performance-tuning.pdf
http://www.springsource.com/files/u1/PerformanceTuningApacheTomcat-Part2.pdf
#       http://www.springsource.com/files/uploads/tomcat/tomcatx-large-scale-deployments.pdf

请帮忙！我确实试过了

public class ScannerExample {

public static void main(String args[]) throws FileNotFoundException {

    //creating File instance to reference text file in Java
    File text = new File("E:\\file.txt");

    //Creating Scanner instnace to read File in Java
    Scanner scnr = new Scanner(text);

    //Reading each line of file using Scanner class
    int lineNumber = 1;
    int lineNumber1 = 1;
    int numinf = 1;
    int numsup=1;

    while(scnr.hasNextLine()){
        String line = scnr.nextLine();
        if (line.contains("HDK")){numinf=lineNumber;
        System.out.println(numinf);
  }

        if (line.contains("SDK")){numsup=lineNumber;
        System.out.println(numsup);}


        lineNumber++;
    }   
    Scanner scnr1 = new Scanner(text);

    while(scnr1.hasNextLine()){
        String line = scnr.nextLine();
        if (lineNumber>numinf){
        System.out.println("line " + lineNumber + " :" + line);}
        lineNumber1++;
    }       

  }   



  }

但它没有用，我用超过这种方法导航文件，我无法限制希望区域的读取！

Answer 1

我不确切地知道你面临的问题究竟是什么但我可以在您的代码中看到问题

while(scnr1.hasNextLine()){
        String line = scnr.nextLine();//this line is a problem
        if (lineNumber>numinf){
        System.out.println("line " + lineNumber + " :" + line);}
        lineNumber1++;
    }

将scnr.nextLine（）更改为scnr1.nextLine（）
你的代码将被执行。

读取以特定行开头的文件

1 个答案: