java按指定编码写入和读取文件内容的类

可以指定编码如：utf-8来写入和读取文件。如果文件编码未知，可以通过该方法先得到文件的编码后再指定正确的编码来读取，否则会出现文件乱码问题。

如何识别文件编码请参考：java自动根据文件内容的编码来读取避免乱码

package com.zuidaima.util;

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;

public class ReadWriteFileWithEncode {

	public static void write(String path, String content, String encoding)
			throws IOException {
		File file = new File(path);
		file.delete();
		file.createNewFile();
		BufferedWriter writer = new BufferedWriter(new OutputStreamWriter(
				new FileOutputStream(file), encoding));
		writer.write(content);
		writer.close();
	}

	public static String read(String path, String encoding) throws IOException {
		String content = "";
		File file = new File(path);
		BufferedReader reader = new BufferedReader(new InputStreamReader(
				new FileInputStream(file), encoding));
		String line = null;
		while ((line = reader.readLine()) != null) {
			content += line + "\n";
		}
		reader.close();
		return content;
	}

	public static void main(String[] args) throws IOException {
		String content = "中文内容";
		String path = "c:/test.txt";
		String encoding = "utf-8";
		ReadWriteFileWithEncode.write(path, content, encoding);
		System.out.println(ReadWriteFileWithEncode.read(path, encoding));
	}
}