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我满足C程序的一个问题connect在MongoDB中检索文件...我不知道如何解决这个问题,请大家帮帮忙...C不能恢复的MongoDB BSON阵列
记录结构:
{ "District" : "HK",
"Contact": [ {"name":"Person A","telephone":"1111-1111"} ,
{"name":"Person B", "telephone":"2222-2222} ]
}
这里是我的代码:
while(mongo_cursor_next(cursor) == MONGO_OK){
bson_iterator iterator[1];
//print district
if (bson_find(iterator, mongo_cursor_bson(cursor), "District")) {
printf("District: %s\n", bson_iterator_string(iterator));
//print array elements
if (bson_find(iterator, mongo_cursor_bson(cursor), "Contact")) {
bson_iterator subit[1];
bson_iterator_subiterator(iterator, subit);
//get array list element one by one
while(bson_iterator_more(subit)){
if(bson_iterator_next(subit)!=BSON_EOO){
bson sub_Object[1];
bson_iterator_subobject_init(subit, sub_Object,1);
//bson_print(sub_Object);
//comment out the following bson_find could show the expected result
if(bson_find(subit, sub_Object, "name"))
printf("\tName : %s\n", bson_iterator_string(subit));
if(bson_find(subit, sub_Object, "telephone"))
printf("\tTelephone: %s\n", bson_iterator_string(subit));
bson_destroy(sub_Object);
}
}
}
}
输出
区:HK
名称:某甲
电话:1111至1111年
任何一个知道为什么某乙记录消失?
我有测试,如果while循环切勿使用bson_find第二里面,它可能能够通过bson_print打印出所有的元素!
是否有关于MongoDB的错误?或者我的代码错了?
非常感谢!
非常感谢你!!!! – moriya