十六进制Unicode编码字符串与字符串互转

[代码] [Java]代码
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01 package service;

02

03

04

05

06 import java.util.regex.Matcher;

07

08 import java.util.regex.Pattern;

09

10

11

12

13 public class CodeChange {

14

15

16

17

18 /*

19

20 * 把中文字符串转换为十六进制Unicode编码字符串

21

22 */

23

24 public static String stringToUnicode(String s) {

25 String str = "";

26 for (int i = 0; i < s.length(); i++) {

27 int ch = (int) s.charAt(i);

28 if (ch > 255)

29 str += "\\u" + Integer.toHexString(ch);

30 else

31 str += "\\" + Integer.toHexString(ch);

32 }

33 return str;

34 }

35

36

37

38 /*

39

40 * 把十六进制Unicode编码字符串转换为中文字符串

41

42 */

43

44 public static String unicodeToString(String str) {

45

46 Pattern pattern = Pattern.compile("(\\\\u(\\p{XDigit}{4}))");

47

48 Matcher matcher = pattern.matcher(str);

49

50 char ch;

51

52 while (matcher.find()) {

53

54 ch = (char) Integer.parseInt(matcher.group(2), 16);

55

56 str = str.replace(matcher.group(1), ch + "");

57

58 }

59

60 return str;

61

62 }

63

64

65

66 public static void main(String[] args) {

67

68

69

70 // 直接以Unicode字符串的方式初始化字符串时，会自动

71

72 String s1 = "\\配\\置\\成\\功\\，\\重\\启\\后\\生\\效";

73

74 System.out.println("s1: " + s1);

75

76

77

78 //转换汉字为Unicode码

79

80 String s2 = "配置成功，重启后生效";

81

82 s2 = CodeChange.stringToUnicode(s2);

83

84 System.out.println("s2: " + s2);

85

86

87

88 //转换Unicode码为汉字

89 String aaa ="\u4ec0\u4e48\u662f\u5b89\u5168\u63a7\u4ef6\uff1f###\u5b89\u5168\u63a7\u4ef6\u53ef\u4ee5\u4fdd\u8bc1\u7528\u6237\u7684\u5bc6\u7801\u4e0d\u88ab\u7a83\u53d6\uff0c\u4ece\u800c\u4fdd\u8bc1\u8d44\u91d1\u5b89\u5168";

90 String s3 = CodeChange.unicodeToString(aaa);

91

92 System.out.println("s3: " + s3);

93

94 }

95

96

97

98

99 }