rapidjson将map转为json------人生苦短,我用rapidjson
直接撸代码:
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
|
#include <iostream>
#include <map>
// 请自己下载开源的rapidjson
#include "rapidjson/prettywriter.h"
#include "rapidjson/rapidjson.h"
#include "rapidjson/document.h"
#include "rapidjson/stringbuffer.h"
#include "rapidjson/writer.h"
#include "rapidjson/memorystream.h"
using namespace std;
using rapidjson::Document;
using rapidjson::StringBuffer;
using rapidjson::Writer;
using namespace rapidjson;
string test( const map<string, string> &m) // 注意这里的const
{
Document document;
Document::AllocatorType& allocator = document.GetAllocator();
Value root(kObjectType);
Value key(kStringType);
Value value(kStringType);
for (map<string, string>::const_iterator it = m.begin(); it != m.end(); ++it) // 注意这里要用const_iterator
{
key.SetString(it->first.c_str(), allocator);
value.SetString(it->second.c_str(), allocator);
root.AddMember(key, value, allocator);
}
StringBuffer buffer;
Writer<StringBuffer> writer(buffer);
root.Accept(writer);
return buffer.GetString();
}
int main( int argc, char *argv[])
{
map<string, string> m;
m[ "name" ] = "taoge" ;
m[ "place" ] = "shenzhen" ;
cout << test(m) << endl;
return 0;
}
|
结果:
{"name":"taoge","place":"shenzhen"}
来,继续改:
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
|
#include <iostream>
#include <map>
// 请自己下载开源的rapidjson
#include "rapidjson/prettywriter.h"
#include "rapidjson/rapidjson.h"
#include "rapidjson/document.h"
#include "rapidjson/stringbuffer.h"
#include "rapidjson/writer.h"
#include "rapidjson/memorystream.h"
using namespace std;
using rapidjson::Document;
using rapidjson::StringBuffer;
using rapidjson::Writer;
using namespace rapidjson;
string test( const map<string, int > &mInt, const map<string, string> &mString) // 注意这里的const
{
Document document;
Document::AllocatorType& allocator = document.GetAllocator();
Value root(kObjectType);
Value key(kStringType);
Value value(kStringType);
for (map<string, int >::const_iterator it = mInt.begin(); it != mInt.end(); ++it) // 注意这里要用const_iterator
{
key.SetString(it->first.c_str(), allocator);
root.AddMember(key, it->second, allocator);
}
for (map<string, string>::const_iterator it = mString.begin(); it != mString.end(); ++it) // 注意这里要用const_iterator
{
key.SetString(it->first.c_str(), allocator);
value.SetString(it->second.c_str(), allocator);
root.AddMember(key, value, allocator);
}
StringBuffer buffer;
Writer<StringBuffer> writer(buffer);
root.Accept(writer);
return buffer.GetString();
}
int main( int argc, char *argv[])
{
map<string, int > mInt;
mInt[ "age" ] = 29;
mInt[ "score" ] = 80;
map<string, string> mString;
mString[ "name" ] = "taoge" ;
mString[ "place" ] = "shenzhen" ;
cout << test(mInt, mString) << endl;
return 0;
}
|
结果:
{"age":29,"score":80,"name":"taoge","place":"shenzhen"}
不多说。
总结
以上就是这篇文章的全部内容了,希望本文的内容对大家的学习或者工作具有一定的参考学习价值,谢谢大家对服务器之家的支持。如果你想了解更多相关内容请查看下面相关链接