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

这是我的代码来读取文件

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();
            }
        }
    }

}

但是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 >

字符之间的空格实际上是一些正方形

我该怎么做才能正确阅读文件

我是否必须提及，文件格式，类似的东西？

Answer 1

您的文件似乎是UTF-16文本编码格式

我已更改了两行，现在程序运行正常。

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

修改后的工作程序

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();
            }
        }
    }

}

如何阅读客户提供的日志文件？

1 个答案: