Original:
Hi there,
I just discovered go and decided to port a little program to Go.
The program reads json-data a URL and process the Data. The Go
Port works well till now.
I dont has any influence on the JSON data and so sometimes there is
control character in it and my program crashes with "invalid character
' \x12 ' in string literal "
Here's the code sample of my program:
Http_return, err: =var http_body []byteif err = = Nil {= Ioutil. ReadAll (Http_return. Body) Http_return. Body.close ()} param_info:= Make (map[string]interface{}) Param_err:
This unmarshal call crashes with "invalid character ' \x12 ' in string
Literal
How does I remove this or any similar control character from the JSON
Data. I dont need those characters so they can simply be removed.
Thanks
Nico
==============================================================
This means that JSON is obtained by means of a network transmission or other method, and then it may contain special characters, so that the JSON parsing in go will be an error.
So one of the buddies came up with a trick.
========================
If you don ' t mind them being replaced with spaces, you could do something like:
forI, ch: =Range Http_body {Switch { CaseCH >'~': http_body[i] =' ' Casech = ='\ r': Casech = ='\ n': Casech = ='\ t': CaseCh <' ': http_body[i] =' ' }}
What is the specific principle of ~k========================================? It's not clear. It is probably based on the character set to determine which are the illegal characters in JSON, and then replace them with spaces. Computer, character set ..... We need to look into it later. =================================== look at the ASCII to display the character, you see. Space begins, ~ ends. Plus \r\n\t these 3 characters. ASCII to display characters
| Binary
decimal |
hexadecimal |
Graphics |
0010 0000 |
32 |
20 |
(space) (?) |
0010 0001 |
33 |
21st |
! |
0010 0010 |
34 |
22 |
" |
0010 0011 |
35 |
23 |
# |
0010 0100 |
36 |
24 |
$ |
0010 0101 |
37 |
25 |
% |
0010 0110 |
38 |
26 |
& |
0010 0111 |
39 |
27 |
‘ |
0010 1000 |
40 |
28 |
( |
0010 1001 |
41 |
29 |
) |
0010 1010 |
42 |
2 A |
* |
0010 1011 |
43 |
2 b |
+ |
0010 1100 |
44 |
2 C |
, |
0010 1101 |
45 |
The |
- |
0010 1110 |
46 |
2E |
. |
0010 1111 |
47 |
2F |
/ |
0011 0000 |
48 |
30 |
0 |
0011 0001 |
49 |
31 |
1 |
0011 0010 |
50 |
32 |
2 |
0011 0011 |
51 |
33 |
3 |
0011 0100 |
52 |
34 |
4 |
0011 0101 |
53 |
35 |
5 |
0011 0110 |
54 |
36 |
6 |
0011 0111 |
55 |
37 |
7 |
0011 1000 |
56 |
38 |
8 |
0011 1001 |
57 |
39 |
9 |
0011 1010 |
58 |
3 A |
: |
0011 1011 |
59 |
3 b |
; |
0011 1100 |
60 |
3C |
< |
0011 1101 |
61 |
3D |
= |
0011 1110 |
62 |
3E |
> |
0011 1111 |
63 |
3F |
? |
|
|
| Binary
decimal |
hexadecimal |
Graphics |
0100 0000 |
64 |
40 |
@ |
0100 0001 |
65 |
41 |
A |
0100 0010 |
66 |
42 |
B |
0100 0011 |
67 |
43 |
C |
0100 0100 |
68 |
44 |
D |
0100 0101 |
69 |
45 |
E |
0100 0110 |
70 |
46 |
F |
0100 0111 |
71 |
47 |
G |
0100 1000 |
72 |
48 |
H |
0100 1001 |
73 |
49 |
I |
0100 1010 |
74 |
4 A |
J |
0100 1011 |
75 |
4 b |
K |
0100 1100 |
76 |
4C |
L |
0100 1101 |
77 |
4D |
M |
0100 1110 |
78 |
4E |
N |
0100 1111 |
79 |
4F |
O |
0101 0000 |
80 |
50 |
P |
0101 0001 |
81 |
51 |
Q |
0101 0010 |
82 |
52 |
R |
0101 0011 |
83 |
53 |
S |
0101 0100 |
84 |
54 |
T |
0101 0101 |
85 |
55 |
U |
0101 0110 |
86 |
56 |
V |
0101 0111 |
87 |
57 |
W |
0101 1000 |
88 |
58 |
X |
0101 1001 |
89 |
59 |
Y |
0101 1010 |
90 |
5 A |
Z |
0101 1011 |
91 |
5B |
[ |
0101 1100 |
92 |
5C |
\ |
0101 1101 |
93 |
5D |
] |
0101 1110 |
94 |
5E |
^ |
0101 1111 |
95 |
5F |
_ |
|
|
| Binary
decimal |
hexadecimal |
Graphics |
0110 0000 |
96 |
60 |
` |
0110 0001 |
97 |
61 |
A |
0110 0010 |
98 |
62 |
B |
0110 0011 |
99 |
63 |
C |
0110 0100 |
100 |
64 |
D |
0110 0101 |
101 |
65 |
E |
0110 0110 |
102 |
66 |
F |
0110 0111 |
103 |
67 |
G |
0110 1000 |
104 |
68 |
H |
0110 1001 |
105 |
69 |
I |
0110 1010 |
106 |
6A |
J |
0110 1011 |
107 |
6B |
K |
0110 1100 |
108 |
6C |
L |
0110 1101 |
109 |
6D |
M |
0110 1110 |
110 |
6E |
N |
0110 1111 |
111 |
6F |
O |
0111 0000 |
112 |
70 |
P |
0111 0001 |
113 |
71 |
Q |
0111 0010 |
114 |
72 |
R |
0111 0011 |
115 |
73 |
S |
0111 0100 |
116 |
74 |
T |
0111 0101 |
117 |
75 |
U |
0111 0110 |
118 |
76 |
V |
0111 0111 |
119 |
77 |
W |
0111 1000 |
120 |
78 |
X |
0111 1001 |
121 |
79 |
Y |
0111 1010 |
122 |
7A |
Z |
0111 1011 |
123 |
7B |
{ |
0111 1100 |
124 |
7C |
| |
0111 1101 |
125 |
7D |
} |
0111 1110 |
126 |
7E |
~ |
|
Golang handling illegal characters in JSON