如何用Java编写UTF-8文件？

Question

我有一些当前的代码,问题是它创建了一个1252代码页文件,我想强制它创建一个UTF-8文件

任何人都可以帮我这个代码,因为我说它目前工作...但我需要强制保存在utf ..我能传递一个参数或什么？

这就是我所拥有的,任何帮助都非常感激

var out = new java.io.FileWriter( new java.io.File( path )),
        text = new java.lang.String( src || "" );
    out.write( text, 0, text.length() );
    out.flush();
    out.close();

Answer 1

而不是使用FileWriter,创建一个FileOutputStream.然后,您可以将其包装在一个中OutputStreamWriter,这允许您在构造函数中传递编码.然后,您可以将数据写入try-with-resources语句中:

try (OutputStreamWriter writer =
             new OutputStreamWriter(new FileOutputStream(PROPERTIES_FILE), StandardCharsets.UTF_8))
    // do stuff
}

Answer 2

试试这个

Writer out = new BufferedWriter(new OutputStreamWriter(
    new FileOutputStream("outfilename"), "UTF-8"));
try {
    out.write(aString);
} finally {
    out.close();
}

Answer 3

尝试使用FileUtils.writeApache Commons.

你应该可以这样做:

File f = new File("output.txt"); 
FileUtils.writeStringToFile(f, document.outerHtml(), "UTF-8");

如果文件不存在,这将创建该文件.

Answer 4

这里给出的所有答案都不会起作用,因为java的UTF-8写作被窃听了.

http://tripoverit.blogspot.com/2007/04/javas-utf-8-and-unicode-writing-is.html

Answer 5

从Java 7开始,您可以Files.newBufferedWriter更简洁地执行相同操作:

Path logFile = Paths.get("/tmp/example.txt");
try (BufferedWriter writer = Files.newBufferedWriter(logFile, StandardCharsets.UTF_8)) {
    writer.write("Hello World!");
    // ...
}

Answer 6

var out = new java.io.PrintWriter(new java.io.File(path), "UTF-8");
text = new java.lang.String( src || "" );
out.print(text);
out.flush();
out.close();

Answer 7

在Java 7的文件实用型处理文件非常有用:

import java.nio.charset.StandardCharsets;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.io.IOException;
import java.util.*;

public class WriteReadUtf8 {
  public static void main(String[] args) throws IOException {
    List<String> lines = Arrays.asList("These", "are", "lines");

    Path textFile = Paths.get("foo.txt");
    Files.write(textFile, lines, StandardCharsets.UTF_8);

    List<String> read = Files.readAllLines(textFile, StandardCharsets.UTF_8);

    System.out.println(lines.equals(read));
  }
}

在Java的版本8,您可以省略字符集参数-方法的默认为UTF-8.