Java判断String是否是中文，并把中文转换成Unicode

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见如下代码： /**
* 判断是否为中文字符
* @param c
* @return
*/
public boolean isChinese(char c) {
Character.UnicodeBlock ub = Character.UnicodeBlock.of(c);
if (ub == Character.UnicodeBlock.CJK_UNIFIED_IDEOGRAPHS
|| ub == Character.UnicodeBlock.CJK_COMPATIBILITY_IDEOGRAPHS
|| ub == Character.UnicodeBlock.CJK_UNIFIED_IDEOGRAPHS_EXTENSION_A
|| ub == Character.UnicodeBlock.GENERAL_PUNCTUATION
|| ub == Character.UnicodeBlock.CJK_SYMBOLS_AND_PUNCTUATION
|| ub == Character.UnicodeBlock.HALFWIDTH_AND_FULLWIDTH_FORMS) {
return true;
}
return false;
}

/**
* 把中文转成Unicode码
* @param str
* @return
*/
public String chineseToUnicode(String str){
String result="";
for (int i = 0; i < str.length(); i++){
int chr1 = (char) str.charAt(i);
if(chr1>=19968&&chr1<=171941){//汉字范围 \u4e00-\u9fa5 (中文)
result+="\\u" + Integer.toHexString(chr1);
}else{
result+=str.charAt(i);
}
}
return result;
}