sqlite3 读写二进制数据

转载：http://blog.csdn.net/chence19871/article/details/7645934

#include 
#include 
#include 
using namespace std;

extern "C"
{
	#include "./sqlite3.h"
};

void sqlite3_exec_report(sqlite3* db, const char* sql, sqlite3_callback func_callback, void *para);
void select_v2(sqlite3 *db, const char*sql);
void outputItem(sqlite3_stmt* stat, int nColumn, char* out_pic_path);
string GetType(int t);
//回调函数
int select_items(void *para, int n_column, char **column_val, char **column_name);//查询

int main(int args, char*argv[])
{
	int result, ret;
	sqlite3* db = NULL;
	char* errmsg = NULL;
	
	char module_path[100];

	//获取当前exe路径
	DWORD dwPathLen = GetModuleFileNameA(NULL, module_path, 100);
	char *p = module_path + dwPathLen;
	while (1)
	{
		char c = *p;
		if (c == '\\')
		{
			*(p+1) = '\0';
			break;
		}
		p--;
	}
	//合成数据库文件路径
	strcat_s(module_path, 100, "db\\mydb.db");
	string db_path(module_path);
	//打开(创建)数据库
	result = sqlite3_open(db_path.c_str(), &db);

	//----------------------------第一张表------------------------------
	//--不包含blob数据，通过普通的方法插入
	//-- --------------------------------------------------------------
	if (result == SQLITE_OK)
	{
		//创建第一张表
		sqlite3_exec_report(db, "create table MyTable_1(ID integer autoincrement primary key, name nvarchar(30)）", NULL, NULL);
		//先清除数据
		sqlite3_exec_report(db, "delete from MyTable_1", NULL, NULL);
		//插入数据	
		const char * sqls[] = {
			"insert into MyTable_1(ID,name) values(0, '钱学森')",
			"insert into MyTable_1(ID,name) values(1, '邓稼先')",
			"insert into MyTable_1(ID,name) values(2, '钱三强')",
			"insert into MyTable_1(ID,name) values(3, '李四光')",
			"insert into MyTable_1(ID,name) values(4, '贺才良')"
		};
		for (int i = 0; i < sizeof(sqls)/sizeof(char*); i++)
		{
			sqlite3_exec_report(db, sqls[i], NULL, NULL);
		}

		//查询插入的数据  用的是回调的方法
		sqlite3_exec_report(db, "select * from MyTable_1", select_items, NULL);
		sqlite3_close(db);
	}
	else
	{
		//打开数据库失败
		cout << sqlite3_errmsg(db) << endl;
		ret = -1;
	}

	//-----------------------------第二张表------------------------------
	//--包含blob数据，通过sqlite3_prepare，sqlite3_bind_blob，sqlite3_step
	//-- 的方法实现数据的插入
	//-- --------------------------------------------------------------
	result = sqlite3_open(module_path, &db);
	if (result==SQLITE_OK)
	{
		sqlite3_exec_report(db, "create table stu_msg(ID integer primary key autoincrement, name nvarchar(32), picture blob)", NULL, NULL);
		sqlite3_exec_report(db, "delete from stu_msg", NULL, NULL);

		sqlite3_stmt *stat;
		const char *pzTail = NULL;

		const char *sqls[] = {
			"insert into stu_msg(ID, name, picture) values(0, '华罗庚', ?);",
			"insert into stu_msg(ID, name, picture) values(1, '钱学森', ?);"
		};
		const char *names[] = {
			"pic\\hualuogen.jpg",
			"pic\\qianxuesen.jpg"
		};

		for (int j=0; j