Kotlin File BufferedOutputStream write ByteArray

快来打我* 2023-10-15 21:24 40阅读 0赞

### Kotlin File BufferedOutputStream write ByteArray ###

### ![2d6bb5b9c6fa40cdb6289d9f388e95a5.png][] ###

import java.io.File
    
    fun main(args: Array<String>) {
        val filePath = "./myfile.txt"
        val file = File(filePath)
    
        val bos = file.outputStream().buffered()
        val bytes: ByteArray = "hello,world!".encodeToByteArray()
    
        bos.write(bytes, 0, bytes.size) //此时数据还在内存
        println("-${file.readText(Charsets.UTF_8)}") //此时读文件数据为空
    
        bos.flush() //缓存的数据刷入文件
        println("--${file.readText(Charsets.UTF_8)}")
    
        bos.close()
    
        //打印文件全部内容
        println("---${file.readText(Charsets.UTF_8)}")
    }

> \-  
> \--hello,world!  
> \---hello,world!

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[Kotlin File readText readLines readBytes_zhangphil_-CSDN_try _ File..._java_byte_Java_byte_java_byte_zhangphil_-CSDN_Java_byte_java_byte_zhangphil_-CSDN_Java_byte_java_byte_zhangphil_-CSDN_Java_byte_java_byte_zhangphil_-CSDN_favicon32.ico_https_blog.csdn.net_zhangphil_article_details_132802895]: https://blog.csdn.net/zhangphil/article/details/132802895
[Kotlin Files readAllBytes readAllLines readString-CSDN_Java_byte_ _ _ _byte_try _ File..._java_byte_Java_byte_java_byte_zhangphil_-CSDN_favicon32.ico_https_blog.csdn.net_zhangphil_article_details_132763802]: https://blog.csdn.net/zhangphil/article/details/132763802
[Java_byte_java_byte_zhangphil_-CSDN_Java_byte_ _ _ _byte_ _ _ _return _ private byte_ fileConvertToByteArray_File file_ _ byte_ data _ null_ try _ File..._java_byte_favicon32.ico_https_blog.csdn.net_zhangphil_article_details_83115640]: https://blog.csdn.net/zhangphil/article/details/83115640