c++、webServices、gsoap、tinyxml、iconv

　　背景解释。编程语言c++，实际项目上会用MFC，数据下载方式为gsoap，拉下来的数据类型为string，用tinyxml对拉下来的string类型进行解析，其中的中文字符都是乱码，用iconv来解码（from utf-8 to GBK）。

//main.cpp

 1 #include "AppServiceSoap.nsmap"
 2 #include "soapAppServiceSoapProxy.h"
 3 #include "iconv.h" 
 4 #include "tinystr.h"  
 5 #include "tinyxml.h"
 6 
 7 using namespace std;
 8 
 9 #define OUTPUT_LEN 2048
10 #define FIELD_LEN 16  
11 
12 int conv_charset(const char *dest, const char *src, char *input, size_t ilen, char *output, size_t olen)
13 {
14     iconv_t conv = iconv_open(dest, src);
15     if (conv == (iconv_t)-1)
16         return -1;
17     memset(output, 0, olen);
18 
19     if (iconv(conv, (const char **)&input, &ilen, &output, &olen))
20         return -1;
21     iconv_close(conv);
22     return 0;
23 }
24 
25 int main()
26 {
27     AppServiceSoapProxy webservice;
28     soap_init(webservice.soap);
29     soap_set_mode(webservice.soap, SOAP_C_UTFSTRING);
30 
31     _WS1__SampleDataByBarCodeNoXML request = _WS1__SampleDataByBarCodeNoXML();
32     string tmp = "18010354204";
33     request.sSampleBarCodeNo = &tmp;
34 
35     _WS1__SampleDataByBarCodeNoXMLResponse response = _WS1__SampleDataByBarCodeNoXMLResponse();
36 
37     char *endpoint = NULL;
38 
39     int result = webservice.SampleDataByBarCodeNoXML(&request, response);
40     
41     if (SOAP_OK == result)
42     {
43         //int element_counter = response.SampleDataByBarCodeNoXMLResult->__sizestring;
44         cout << *response.SampleDataByBarCodeNoXMLResult <<endl;
45         cout << "--------------------开始解码--------------------" << endl;
46         
47         TiXmlDocument* myDocument = new TiXmlDocument();
48         myDocument->Parse((*(response.SampleDataByBarCodeNoXMLResult)).c_str(), 0, TIXML_ENCODING_UTF8);
49         TiXmlElement* rootElement = myDocument->RootElement();
50         TiXmlElement* studentsElement = rootElement->FirstChildElement();
51         studentsElement = studentsElement->FirstChildElement();
52     
53         while (studentsElement)
54         {
55             cout << studentsElement->Value() << ":";
56 
57             if (studentsElement->GetText())
58             {
59                 int ilen = strlen(studentsElement->GetText());
60                 int olen = ilen * 2;
61                 char *output = (char *)malloc(sizeof(char) * olen);
62                 char* input = nullptr;                       //初始化char*类型
63 
64                 input = const_cast<char*>(studentsElement->GetText());           //const char*类型转char*类型
65 
66                 conv_charset("GBK", "UTF-8", input, ilen, output, olen);
67                 cout << output << endl;
68             }
69             else
70             {
71                 cout << "（此项无内容）" << endl;
72             }
73 
74             studentsElement->utf8ByteTable;
75 
76             //迭代下一个
77             studentsElement = studentsElement->NextSiblingElement();
78         }
79     }
80     //结束了
81     soap_destroy(webservice.soap);
82     soap_end(webservice.soap);
83     soap_done(webservice.soap);
84 
85     cout << "---------------------finish-----------------------" << endl;
86     cin.get();
87     return 0;
88 }

项目的目录结构。

主要分成3部分。

1、gsoap。

先做soap，这个参考上一篇。

2、tinyxml。

这个比较简单。

3、iconv.h，iconv.lib

这个好难。我都是用别人编译好的。

参考：https://www.cnblogs.com/tangxin-blog/p/5608751.html。