Question about boost. xml_parser Chinese Characters

When xml_parser is used to read XML, parsing errors may occur if Chinese characters are encountered.

There are solutions on the Internet that use wptree for implementation. However, when wptree is used to write XML, an error occurs. When ptree is used to write Chinese characters, no error occurs.

 

Based on the above information, try to use ptree to write XML, and use wptree to read. Use a demo to describe it.

1 // contains the file
2 # include <boost/property_tree/ptree. HPP>
3 # include <boost/property_tree/xml_parser.hpp>
4 # include <boost/property_tree/json_parser.hpp>
5 # include <boost/foreach. HPP>
6 # include <string>
7 # include <exception>
8 # include <iostream>

 

Define struct:

1 struct debug_simple
2 {
3 int itsnumber;
4 STD: String itsname; // you can use string here.
5 void load (const STD: string & filename); // load the Function
6 void save (const STD: string & filename); // Save the Function
7 };

Save the function, using ptree:

 1 void debug_simple::save( const std::string& filename )
 2 {
 3     using boost::property_tree::ptree;
 4     ptree pt;
 5 
 6     pt.put("debug.number",itsNumber);
 7     pt.put("debug.name",itsName);
 8 
 9     write_xml(filename,pt);
10 }

 

The wptree used by the load function. The read value is wstring and must be converted to string.

1 void debug_simple: load (const STD: string & filename)
2 {
3 using boost: property_tree: wptree;
4 wptree WPT;
5 read_xml (filename, WPT );
6
7 itsnumber = WPT. Get <int> (L "Debug. Number ");
8 STD: wstring wstr = WPT. Get <STD: wstring> (L "Debug. Name ");
9 itsname = STD: string (wstr. Begin (), wstr. End (); // convert wstring to string
10}

Main function:

1 int _ tmain (INT argc, _ tchar * argv [])
2 {
3
4 try
5 {
6 debug_simple ds, read;
7 Ds. itsname = "Chinese English ";
8 dS. itsnumber = 20;
9
10 Ds. Save ("Simple. xml ");
11 read. Load ("Simple. xml ");
12
13 STD: cout <read. itsnumber <read. itsname;
14
15}
16 catch (STD: exception & E)
17 {
18 STD: cout <"error:" <E. What () <"\ n ";
19}
20 return 0;
21}