golang处理 json中非法字符

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原文：

Hi there, 

I just discovered Go and decided to port a little program to Go. 

The program reads JSON-Data from an URL and process the Data. The Go 
port works well till now. 

I dont have any influence on the JSON data and so sometimes there are 
control character in it and my program crashes with "invalid character 
‘\x12‘ in string literal" 

here the code sample of my program: 

http_return, err := http.Get(newurl) 
var http_body []byte; 
if err == nil { 
  http_body, err = ioutil.ReadAll(http_return.Body) 
  http_return.Body.Close() 
} 
param_info := make(map[string]interface{}) 
param_err := json.Unmarshal(http_body, &param_info) 

This Unmarshal call crashes with "invalid character ‘\x12‘ in string 
literal" 

How do 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

==============================================================

意思大概就是说，json是通过网络传输或者其它方法获取的，然后里面可能包含特殊字符,这样呢，在go里面用json 解析就会报错。

于是有个哥们就出了一招。

========================

for i, ch := range http_body {

  switch {
  case ch > ‘~‘:   http_body[i] = ‘ ‘
  case ch == ‘\r‘:
  case ch == ‘\n‘:
  case ch == ‘\t‘:
  case ch < ‘ ‘:   http_body[i] = ‘ ‘
  }
} 

golang处理 json中非法字符

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原文地址：http://www.cnblogs.com/zhangqingping/p/4331823.html