我用rapidjson做一些事情,我想为我刚创建的数组添加值
#include <iostream>
#include "rapidjson/document.h"
using namespace std ;
int main() {
char json[1024];
rapidjson::Document document ;
document.Parse<0>(json);
if (!document.IsObject()) {
document.SetObject();
}
assert(document.IsObject());
rapidjson::Document::AllocatorType& allocator = document.GetAllocator();
// adding member (int)
document.AddMember("mohammed",25,allocator);
assert(document.HasMember("mohammed"));
cout << document["mohammed"].GetInt() << endl ;
// adding member (array)
rapidjson::Value array(rapidjson::kArrayType);
array.PushBack(5,allocator);
array.PushBack(6,allocator);
cout << array[0u].GetInt() << endl ;
cout << array[1].GetInt() << endl ;
document.AddMember("array",array,allocator);
assert(document.HasMember("array"));
assert(document["array"].IsArray());
// here the following line give me an error
array.PushBack(7,allocator);
}
错误是
json: rapidjson/document.h:397: rapidjson::GenericValue<Encoding, Allocator>& rapidjson::GenericValue<Encoding, Allocator>::PushBack(rapidjson::GenericValue<Encoding, Allocator>&, Allocator&) [with Encoding = rapidjson::UTF8<>; Allocator = rapidjson::MemoryPoolAllocator<>]: Assertion `IsArray()' failed.
中止(核心倾销)
有人可以解释什么问题?发生了什么我对此有点新鲜,谢谢。
答案 0 :(得分:3)
执行array.PushBack(...)
时,array
已经移动到document
,并变为空值类型(array.IsNull() == true
)。所以你不能PushBack
为空值。
document["array"].PushBack(7,allocator)
将有效。