没有合适的方法找到写（字符串）

Question

我正在测试代码，其中我必须从用户输入输入，直到用户输入“停止”单词，我必须将其写入文件。我在代码中出现错误。

代码：

import java.io.*; 
import java.util.*; 

public class fh1 

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

{ 

    FileOutputStream fout = new FileOutputStream("a.log"); 

    boolean status = true; 
    while (status) 
    { 
     System.out.println("Enter the word : "); 
     Scanner scan = new Scanner(System.in); 
     String word = scan.next(); 

     System.out.println(word); 

     if (word.equals("stop")) 
     { 
      status = false; 
     } 
     else 
     { 
      fout.write(word); 
     } 
    } 
    fout.close(); 
} 

} 

我收到以下错误：

fh1.java:28: error: no suitable method found for write(String) 
          fout.write(word); 
           ^
method FileOutputStream.write(byte[],int,int) is not applicable 
    (actual and formal argument lists differ in length) 
method FileOutputStream.write(byte[]) is not applicable 
    (actual argument String cannot be converted to byte[] by method invocation conversion) 
method FileOutputStream.write(int) is not applicable 
    (actual argument String cannot be converted to int by method invocation conversion) method FileOutputStream.write(int,boolean) is not applicable (actual and formal argument lists differ in length) 1 error 

这个错误是什么意思，如何解决呢？

Answer 1

，你可以尝试像

fout.write(word.getBytes()); 

Answer 2

它的说法是write方法不带一个String参数。

你需要调用它之前将其转换为字节数组

How to convert string to byte in Java

Answer 3

write功能需要字节数组作为第一个参数。所以你应该将你的字符串转换为字节数组。您可以使用word.getBytes（ “UTF-8”）

Answer 4

尝试

fout.write(word.getBytes()); 

write(byte[] b)：

public void write(byte[] b) 
      throws IOException 
Writes b.length bytes from the specified byte array to this file output stream. 
Overrides: 
write in class OutputStream 
Parameters: 
b - the data. 
Throws: 
IOException - if an I/O error occurs. 

Answer 5

byte[] dataInBytes = word.getBytes(); 
fout.write(dataInBytes); 

转寄此example。

Answer 6

在处理字符（字符串）时，使用FileWriter作为字符流。 也避免手动将字符串转换为字节。

public class Test14 

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

{ 

FileWriter fout = new FileWriter("a.log"); 

boolean status = true; 
while (status) 
{ 
    System.out.println("Enter the word : "); 
    Scanner scan = new Scanner(System.in); 
    String word = scan.next(); 

    System.out.println(word); 

    if (word.equals("stop")) 
    { 
     status = false; 
    } 
    else 
    { 
     fout.write(word); 
    } 
} 
fout.close(); 

}

}

它会奏效。 如果你只想写日志，使用java的记录器api。