如何验证从CSV备份的输入数据，没有专用的CSV解析器 [英] How to validate inputted data from that backed up with a CSV without a purpose built CSV parser

问题描述

我需要能够验证用户输入的电子邮件和密码对一个csv文件，我有，必须确保他们在文件中，并且他们彼此匹配，如;
[e-mail] ocrabc。目前，我可以拆分文件，并将其打印到屏幕，但我找不到一个方法把它放入一个数组，然后我可以参考。有没有更好的方法来解决这样的问题没有数组？

I need to be able to verify a user inputted email and password against a csv file which I have that have to make sure that they are in the file and also that they match each other such as; [e-mail] ocrabc. Currently I can split the file and print it to the screen but I cannot find a way to put it into an array which I can then refer to. Is there a better way of solving such a problem without an array?

import java.io.*;

import java.util.Arrays;

public class CSVRead{

public static void main(String[] arg) throws Exception {
    BufferedReader CSVFile =
        new BufferedReader(new FileReader("testa453.csv"));
    String dataRow = CSVFile.readLine();
    while (dataRow != null){
        String[] dataArray = dataRow.split(",");
        for (String item:dataArray) {
            System.out.print(item + "\t");
        }
        System.out.println();
        dataRow = CSVFile.readLine();
    }
    CSVFile.close();
    System.out.println();

}

}

EDIT;只是为了澄清我对Java并不陌生，并希望使用和数组，除非有更有效的方法来解决问题;

EDIT; Just to clarify I am reasonably new to Java and would like to use and array unless there is a more efficient way of solving the problem;

推荐答案

您可以创建地图电子邮件 - >密码

You can create a Map of e-mail -> password

import java.io.*;

import java.util.Arrays;

public class CSVRead{

public static void main(String[] arg) throws Exception {
    Map<String, String> emailPasswordMap = new HashMap<String, String> ();
    BufferedReader CSVFile =
        new BufferedReader(new FileReader("testa453.csv"));
    String dataRow = CSVFile.readLine();
    while (dataRow != null){
        String[] dataArray = dataRow.split(",");
        emailPasswordMap.put (dataArray[0], dataArray[1]);
        dataRow = CSVFile.readLine();
    }
    CSVFile.close();

    String email = "xxx";
    String password = "yyy";

    if (password.equals (emailPasswordMap.get (email)) {
        System.out.println ("Email/password combination is valid");
    }
    else {
        System.out.println ("Email/password combination is invalid");
    }
}

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