代碼如下所示：
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
|
/*輸入一個byte和byte[]合并為byte[]*/ public byte[] bytemerger(byte byte_1, byte[] byte_2) { byte[] byte_3 = new byte[1 + byte_2.length]; byte_3[0] = byte_1; system.arraycopy(byte_2, 0, byte_3, 1, byte_2.length); return byte_3; } /*輸入一個byte[]和byte[]合并為byte[]*/ public byte[] bytemerger(byte[] byte_1, byte[] byte_2) { byte[] byte_3 = new byte[1 + byte_2.length]; byte_3[0] = byte_1; system.arraycopy(byte_2, 0, byte_3, byte_1.length, byte_2.length); return byte_3; } /*輸入一個string（16進制的字符hex eg：ff）輸出為16進制的byte[]，注意輸入為小寫的hex字符串*/ public byte[] hexstringtobyte(string hex) { int len = (hex.length() / 2); byte[] result = new byte[len]; char[] achar = hex.tochararray(); for (int i = 0; i < len; i++) { int pos = i * 2; result[i] = (byte) (chartobyte(achar[pos]) << 4 | chartobyte(achar[pos + 1])); } //system.out.println(arrays.tostring(result)); return result; } private byte chartobyte(char c) { //return (byte) "0123456789abcdef".indexof(c); return (byte) "0123456789abcdef".indexof(c); } /*輸入10進制數字字符串，輸出hex字符串（2位,eg: f 則輸出 0f）*/ string value= "100"; int parseint = integer.parseint(value, 10); string hexstring = integer.tohexstring(parseint); if (hexstring.length() < 2) { hexstring = '0' + hexstring; } header = header + hexstring; } /*輸入16進制byte[]輸出16進制字符串*/ public static string bytearraytohexstr(byte[] bytearray) { if (bytearray == null) { return null; } char[] hexarray = "0123456789abcdef".tochararray(); char[] hexchars = new char[bytearray.length * 2]; for (int j = 0; j < bytearray.length; j++) { int v = bytearray[j] & 0xff; hexchars[j * 2] = hexarray[v >>> 4]; hexchars[j * 2 + 1] = hexarray[v & 0x0f]; } return new string(hexchars); } |
ps：下面看下js對url中特殊字符的轉換
|
1
2
3
4
5
6
7
8
9
10
11
12
13
|
let str = "http%3a%2f%2fxxxxxxxx%2findex.php%2fxxxxxxx%2fmember%2fregister%3frecommend_id%3d11442%26id%3d87"; function replacestr(str){ str = str.replace(/%3a/g, ":"); str = str.replace(/%2f/g, "/"); str = str.replace(/%3f/g, "?"); str = str.replace(/%3d/g, "="); str = str.replace(/%26/g, "&"); str = str.replace(/%2b/g, "+"); str = str.replace(/%20/g, " "); str = str.replace(/%23/g, "#"); return str; } console.log(replacestr(str)); |
總結
以上所述是小編給大家介紹的java中byte[]、string、hex字符串等轉換的方法，希望對大家有所幫助，如果大家有任何疑問請給我留言，小編會及時回復大家的。在此也非常感謝大家對服務器之家網站的支持！
