learning scala write to file scala 写文件功能: scala> import java.io.PrintWriter import java.io.PrintWriter scala> val outputFile = new PrintWriter("text.txt") outputFile: java.io.PrintWriter = java.io.PrintWriter@213c812a scala> outputFile.println("hello panzidong") scala> outputFile.print(...
...ID @param file_path: Excel文件路径 @param sheet_name: Excel工作表名称 @return: 包含安全组ID的列表...permissions_info } @staticmethod def write_to_excel(data: List[dict], file_path): """ 将数据列表写入...Excel文件 @param data: 数据列表,其中每个元素是一个字典 @param file_path: ...
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scala读写文件 def main(args: Array[String]): Unit ={ //1 readfor( i<- Source.fromFile("test.dat").getLines().toArray){ println(i) } // 2 read println(Source.fromFile("test.dat").mkString) //1write val out=newPrintWriter("test.dat")for(i<-1 to 100) out.println(i) out....
fromFile("src/main/scala/ScalaStudy/chapter02/test.txt").foreach(print) //(2)将数据写入文件 val writer = new PrintWriter(new File("文件路径/outputtest.txt")) writer.write("hi,my name is wq") writer.close() 二、数据类型 1. 整数类型 val a1: Byte = 127 //Byte正最大区间(8位) ...
write:直接写入,不会换行 importjava.io.{File,PrintWriter} 案例——println方法 objectreadDemo{defmain(args:Array[String]):Unit={importjava.io.{File,PrintWriter}valwrite=newPrintWriter(newFile("d://Hello.txt"))//输入文件名称for(i<-1to100){write.println(i)}write.close()}} ...
在Linux终端下,用gedit编辑(或使用Vi、Vim等)一个文件ScalaWriteFile.scala,其代码如下: import java.io._ //需要导入java IO包object Test { def main(args: Array[String]) { //定义一个PrintWrite对象,准备将内容写入test.txt val writer = new PrintWriter(new File(test.txt ))//使用write方法,写入...
val fis = new FileInputStream(new File("C://Users//Administrator//Desktop//test.txt"))val fos = new FileOutputStream(new File("C://Users//Administrator//Desktop//test3.txt"))val buf = new Array[Byte](1024)fis.read(buf)fos.write(buf, 0, 1024)fis.close()fos.close() ...
def writeFile(file: java.io.File) = new ManagedResource[java.io.OutputStream] { def loan[U](f: java.io.OutputStream => U): U = { val stream = new java.io.BufferedOutputStream(new java.io.FileOutputStream(file)) try { f(stream) ...
默认当前路径是idea的当前项目路径最顶层Source.fromFile("src/main/resources/test_read.txt","utf-8").foreach(print)//2.将数据写入文件val writer = new PrintWriter(new File("src/main/resources/test_write.txt"))val content ="""hello spark|hello java|hello scala|""".stripMarginwriter.write(...