java中读取文件字节数组，怎么能以UTF-8格式读取

java中读取文件字节数组，怎么能以UTF-8格式读取

public static byte[] getBytesFromFile(String fileName) {
     //fileName="C:/Users/ZPTian/Desktop/WebServicetest.txt";
     File f = new File(fileName);
        if (f == null) {
            return null;
        }
        try {
            FileInputStream stream = new FileInputStream(f);
            ByteArrayOutputStream out = new ByteArrayOutputStream(1000);
            byte[] b = new byte[1000];
            int n;
            while ((n = stream.read(b)) != -1)
                out.write(b, 0, n);
            stream.close();
            out.close();

            return out.toByteArray();
        } catch (IOException e) {
        }
        return null;
    }

返回的都是116,101,115,116,102,97,120,-50,-46,-75,-60,-76,-85,-43,-26
中文的都带-号，怎么以UTF-8读取呢

6 个解决方案

#1

字节素没有编码概念地，转换成字符才有，
比如用reader啥的

#2

LZ是刚刚开始学JAVA的吗？最好看看API文档，哪里有详细介绍！

#3

getBytesFromFile

#4


		//写
		new BufferedWriter(new OutputStreamWriter(new ByteArrayOutputStream(),"UTF-8"));

		//读
		new BufferedReader(new InputStreamReader(new FileInputStream(""),"UTF-8"));

#5

引用 4 楼 zhangyy130 的回复:

Java code//写new BufferedWriter(new OutputStreamWriter(new ByteArrayOutputStream(),"UTF-8"));//读new BufferedReader(new InputStreamReader(new FileInputStream(""),"UTF-8"));

更全的～～～


		//写
		BufferedWriter w=	new BufferedWriter(new OutputStreamWriter(new ByteArrayOutputStream(),"UTF-8"));

		//读
		BufferedReader r=new BufferedReader(new InputStreamReader(new FileInputStream(""),"UTF-8"));

		String temp=null;
		while((temp=r.readLine())!=null){
			w.write(temp);
			w.write("\r\n");
		}

#6

恩，不错，但是有一点，就是上传一下帮助文档，为什么读不出来啊

#1