问题描述
不同的系统中new String()出来的字符串编码是不是一样的?不同系统下new String的默认编码是什么呢?
解决方案
这个问题其实直接跟进 java的源码就知道了：用的是Charset.defaultCharset().name();public String(byte bytes[]) {this(bytes, 0, bytes.length); }public String(byte bytes[], int offset, int length) {checkBounds(bytes, offset, length);char[] v = StringCoding.decode(bytes, offset, length);this.offset = 0;this.count = v.length;this.value = v; }static char[] decode(byte[] ba, int off, int len) {String csn = Charset.defaultCharset().name();try { return decode(csn, ba, off, len);} catch (UnsupportedEncodingException x) { warnUnsupportedCharset(csn);}try { return decode("ISO-8859-1", ba, off, len);} catch (UnsupportedEncodingException x) { // If this code is hit during VM initialization, MessageUtils is // the only way we will be able to get any kind of error message. MessageUtils.err("ISO-8859-1 charset not available: " + x.toString()); // If we can not find ISO-8859-1 (a required encoding) then things // are seriously wrong with the installation. System.exit(1); return null;} }
解决方案二：
默认Unicode