【问题标题】:Write chinese characters from one file to another将汉字从一个文件写入另一个文件
【发布时间】:2013-03-13 05:31:20
【问题描述】:

我有一个包含汉字文本的文件,我想将这些文本复制到另一个文件中。但是文件输出与中文字符混淆。请注意,在我的代码中,我已经使用“UTF8”作为我的编码:

BufferedReader br = new BufferedReader(new FileReader(inputXml));
StringBuilder sb = new StringBuilder();
String line = br.readLine();
while (line != null) {
sb.append(line);
sb.append("\n");
line = br.readLine();
}
String everythingUpdate = sb.toString();

Writer out = new BufferedWriter(new OutputStreamWriter(
        new FileOutputStream(outputXml), "UTF8"));

out.write("");
out.write(everythingUpdate);
out.flush();
out.close();

【问题讨论】:

  • 您的输入文件是否以 UTF-8 编码?检查 getEncoding() 时 FileReader 是否使用 UTF-8?您是如何检查输出的,您的文本查看器是否支持 UTF-8?
  • 使用它使用的编码读取输入文件。您可以在许多编辑器中检查文件的编码。

标签: java filestream fileoutputstream stringwriter


【解决方案1】:

@hyde 的回答是有效的,但我有两个额外的注意事项,我将在下面的代码中指出。

当然,您可以根据需要重新组织代码

// Try with resource is used here to guarantee that the IO resources are properly closed
// Your code does not do that properly, the input part is not closed at all
// the output an in case of an exception, will not be closed as well
try (BufferedReader reader = new BufferedReader(new InputStreamReader(new FileInputStream(inputXML), "UTF-8"));
    PrintWriter out = new PrintWriter(new OutputStreamWriter(new FileOutputStream(outputXML), "UTF8"))) {
    String line = reader.readLine();

    while (line != null) {
    out.println("");
    out.println(line);

    // It is highly recommended to use the line separator and other such
    // properties according to your host, so using System.getProperty("line.separator")
    // will guarantee that you are using the proper line separator for your host
    out.println(System.getProperty("line.separator"));
    line = reader.readLine();
    }
} catch (IOException e) {
  e.printStackTrace();
}

【讨论】:

    【解决方案2】:

    在这种情况下,您不应使用FileReader,因为它不允许您指定输入编码。在FileInputStream 上构造InputStreamReader

    类似这样的:

    BufferedReader br = 
            new BufferedReader(
                new InputStreamReader(
                    new FileInputStream(inputXml), 
                    "UTF8"));
    

    【讨论】:

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