中文测试没问题

可以生成

可以读取

代码如下

package com.sec.file;

import java.io.BufferedReader;

import java.io.BufferedWriter;

import java.io.File;

import java.io.FileInputStream;

import java.io.FileWriter;

import java.io.IOException;

import java.io.InputStreamReader;

import java.io.StringReader;

import java.io.StringWriter;



import org.apache.commons.logging.Log;

import org.apache.commons.logging.LogFactory;



public class TxtFile {

    private final static Log logger = LogFactory.getLog(TxtFile.class);

    BufferedReader bufferedReader;

    BufferedWriter bufferedWriter;

    InputStreamReader reader;



    /**

     * 生成数据文件

     *

     * @param filePath 写入文件的路径

     * @param content 写入的字符串内容

     * @return

     */

    public boolean string2File(String content, String filePath) {

        boolean flag = true;

        try {

            File file = new File(filePath);

            if (!file.exists()) {

                file.createNewFile();

            }

            bufferedReader = new BufferedReader(new StringReader(content));

            bufferedWriter = new BufferedWriter(new FileWriter(file));

            char buffer[] = new char[1024];

            int len;

            while ((len = bufferedReader.read(buffer)) != -1) {

                bufferedWriter.write(buffer, 0, len);

            }

            bufferedWriter.flush();

            bufferedReader.close();

            bufferedWriter.close();

        } catch (IOException e) {

            logger.error(e);

            flag = false;

            return flag;

        } finally {

            if (bufferedReader != null) {

                try {

                    bufferedReader.close();

                } catch (IOException e) {

                    logger.error(e);

                }

            }

        }

        return flag;

    }

    /**

     * 读取数据文件

     * @param filePath 读取的文件路径

     * @param encoding 读取后的字符串编码集设置

     * @return

     */

    public String file2String(String filePath, String encoding) {

        StringWriter writer = new StringWriter();

        File file = new File(filePath);

        try {

            if (encoding == null || "".equals(encoding.trim())) {

                reader = new InputStreamReader(new FileInputStream(file));

            } else {

                reader = new InputStreamReader(new FileInputStream(file), encoding);

            }

            // 将输入流写入输出流

            char[] buffer = new char[1024];

            int n = 0;

            while (-1 != (n = reader.read(buffer))) {

                writer.write(buffer, 0, n);

            }

        } catch (Exception e) {

            logger.error(e);

            return null;

        } finally {

            if (reader != null)

                try {

                    reader.close();

                } catch (IOException e) {

                    logger.error(e);

                }

        }

        // 返回转换结果

        if (writer != null) {

            return writer.toString();

        } else {

            return null;

        }

    }



    public static void main(String[] args) {

        new TxtFile().string2File("测试文件写入中文，TEST STRING TO FILE", "F:/c.txt");

        System.out.println(new TxtFile().file2String("F:/c.txt", null));

        System.out.println(new TxtFile().file2String("F:/c.txt", "GBK"));

    }

}