将一串字符串按指定编码表输入到文本中

Java文件读写与编码转换

最新推荐文章于 2025-08-15 14:43:33 发布

原创最新推荐文章于 2025-08-15 14:43:33 发布 · 492 阅读

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本文演示了如何使用Java进行文件的读取与写入操作，并展示了不同字符编码之间的转换过程。通过具体的代码示例介绍了FileReader、FileWriter、InputStreamReader和OutputStreamWriter等类的应用方法。

public class TranStreamDemo2 {

	/**
	 * @param args
	 * 将一串字符串按指定编码表输入到文本中
	 * @throws IOException 
	 */
	public static void main(String[] args) throws IOException {
		read_1();
		read_2();
		read_3();
		
		write_3();
		write_1();
		write_2();
	}

	public static void read_3() throws IOException, IOException {
		InputStreamReader isr=new InputStreamReader(new FileInputStream("E:\\gbk_2.txt"),"UTF-8");
		char[] ch=new char[1024];
		int len=isr.read(ch);
		System.out.println(new String(ch,0,len));
	}

	public static void read_2() throws IOException, IOException {
		InputStreamReader isr=new InputStreamReader(new FileInputStream("E:\\utf_3.txt"),"GBK");
		char[] ch=new char[1024];
		int len=isr.read(ch);
		System.out.println(new String(ch,0,len));
	}

	public static void read_1() throws IOException {
		FileReader fr=new FileReader("E:\\utf_3.txt");
		char[] ch=new char[1024];
		int len=fr.read(ch);
		System.out.println(new String(ch,0,len));
	}

	public static void write_3() throws IOException, IOException {
		OutputStreamWriter osw=new OutputStreamWriter(new FileOutputStream("E:\\utf_3.txt"),"UTF-8");
		osw.write("你好");
		osw.close();
	}

	public static void write_2() throws FileNotFoundException, IOException {
		OutputStreamWriter osw=new OutputStreamWriter(new FileOutputStream("E:\\gbk_2.txt"),"gbk");
		osw.write("你好");
		osw.close();
	}

	public static void write_1() throws IOException {
		FileWriter fw=new FileWriter("E:\\gbk_1.txt");
		fw.write("你好");
		fw.close();
		
	}

}