String str = "abcd"; byte[] bs = str.getBytes();byte[]数组转化为string字符串
/*String str1 = "abcd"; byte[] bs1 = str1.getBytes();*/ byte[] bs1 = {97,98,100}; String s = new String(bs1);设置格式
byte[] srtbyte = {97,98,98}; String res = new String(srtbyte,"UTF-8");
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