java - 如何读取客户提供的日志文件？

Question

所以我有一个像这样的日志文件

blah blah blah blah blah blah blah 
blah blah blah blah blah blah blah 
<someTag>someDetail</someTag>
blah blah blah blah blah blah blah 
blah blah blah blah blah blah blah 
<someTag>someDetail</someTag>
blah blah blah blah blah blah blah 
blah blah blah blah blah blah blah 

这是我读取文件的代码

import java.io.BufferedReader;
import java.io.FileReader;
import java.io.IOException;

public class DummyReadFile {

    public static void main(String[] args) {

        BufferedReader br = null;

        try {

            String sCurrentLine;
            br = new BufferedReader(new FileReader("C:/Hussi/logFile.log"));

            while ((sCurrentLine = br.readLine()) != null) {
                //System.out.println(sCurrentLine);
                if(sCurrentLine.contains("<"))
                {
                    System.out.println("==>>>"+sCurrentLine);
                }
            }

        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            try {
                if (br != null)br.close();
            } catch (IOException ex) {
                ex.printStackTrace();
            }
        }
    }

}

但在我的输出中我得到了

b l a h b l a h b l a h 
< s o m e T a g >s o m e D e t a i l < / s o m e T a g >
b l a h b l a h b l a h 
< s o m e T a g >s o m e D e t a i l < / s o m e T a g >
b l a h b l a h b l a h 
< s o m e T a g >s o m e D e t a i l < / s o m e T a g >

字符之间的空间实际上是一些正方形

如何才能正确读取文件

我必须提及文件格式之类的东西吗？？

Answer 1

您的文件似乎采用 UTF-16 文本编码格式

我更改了两行，现在程序可以正常工作了。

FileInputStream fin = new FileInputStream("C:/temp/test3.txt");
br = new BufferedReader(new InputStreamReader(fin, "UTF-16LE"));

修改工作计划

import java.io.BufferedReader;
import java.io.FileInputStream;
import java.io.FileReader;
import java.io.IOException;
import java.io.InputStreamReader;

public class DummyReadFile {

    public static void main(String[] args) {

        BufferedReader br = null;

        try {

            String sCurrentLine;
            FileInputStream fin = new FileInputStream("C:/temp/test3.txt");
            br = new BufferedReader(new InputStreamReader(fin, "UTF-16LE"));
            //br = new BufferedReader(new FileReader("C:/temp/test3.txt"));

            while ((sCurrentLine = br.readLine()) != null) {
                System.out.println(sCurrentLine);
                /*if(sCurrentLine.contains("<"))
                {
                    System.out.println("==>>>"+sCurrentLine);
                }*/
            }

        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            try {
                if (br != null)br.close();
            } catch (IOException ex) {
                ex.printStackTrace();
            }
        }
    }

}