目前我的代码没有工作我有一张桌子......
void PersonalDataBase::openUserDataBase()
{
int rc;
//table setup
string table = "CREATE TABLE IF NOT EXISTS USERS (" \
"_id INTEGER PRIMARY KEY NOT NULL," \
"USERNAME TEXT NOT NULL," \
"PASSWORD TEXT," \
"USERHASH TEXT NOT NULL," \
"EVAL TEXT NOT NULL," \
"NVAL TEXT NOT NULL," \
"PVAL TEXT," \
"QVAL TEXT," \
"DVAL TEXT);";
sqlite3_stmt *stmt;
sqlite3_initialize();
/* Open database */
//Note rc should be checked for errors
rc = sqlite3_open_v2("database/data/UsersDB.db", &userDB, SQLITE_OPEN_READWRITE | SQLITE_OPEN_CREATE, NULL);
//add table
rc = sqlite3_prepare_v2(userDB, table.c_str(), -1, &stmt, 0);
sqlite3_step(stmt);
sqlite3_finalize(stmt);
}
调用此表后,我的表已创建但现在插入其中...
现在插入到我的表中,我创建一个新条目并生成我的unsigned char数组e,d,n,p,q然后....
string insertQuery = "INSERT INTO USERS (USERNAME,PASSWORD,USERHASH,EVAL,NVAL,PVAL,QVAL,DVAL) " \
"VALUES ('" + username + "', '" + password + "', ";
//set E
string temp1 = "";
for (int i = 0; i < e -> getLength(); i++)
{
temp1 += (char) e -> getByte(i);
}
insertQuery += temp1 + "', '";
//set N
temp1 = "";
for (int i = 0; i < n -> getLength(); i++)
{
temp1 += (char) n -> getByte(i);
}
insertQuery += temp1 + "', '";
//set P
temp1 = "";
for (int i = 0; i < p -> getLength(); i++)
{
temp1 += (char) p -> getByte(i);
}
insertQuery += temp1 + "', '";
//set Q
temp1 = "";
for (int i = 0; i < q -> getLength(); i++)
{
temp1 += (char) q -> getByte(i);
}
insertQuery += temp1 + "', '";
//set D
temp1 = "";
for (int i = 0; i < d -> getLength(); i++)
{
temp1 += (char) d -> getByte(i);
}
insertQuery += temp1 + "');";
//insert Key + User data into Table
sqlite3_prepare_v2(userDB, insertQuery.c_str(), -1, &stmt1, 0);
sqlite3_step(stmt1);
sqlite3_finalize(stmt1);
我构建了我的查询,但是我非常确定我的问题的一部分是我的getByte()函数返回一个unsigned char,这个值可以是任何东西,它的ascii等价可以说&# 39;或者,我认为正在弄乱我的查询的字符,我的问题是有没有办法可以直接将我的unsigned字符写入我的数据库?或者我应该创建一个函数,让他们将他们的8位转换为7位然后使用字符?但是,这仍然没有解决我的问题,它可能是&#39;和,或其他人物。谁对我应该做什么有任何想法?
答案 0 :(得分:1)
要避免格式化问题,请使用参数:
string insertQuery = "INSERT INTO USERS (USERNAME,PASSWORD,USERHASH,EVAL,NVAL,PVAL,QVAL,DVAL) "
"VALUES (?,?,?,?,?,?,?,?);";
err = sqlite3_prepare_v2(userDB, insertQuery.c_str(), -1, &stmt1, 0);
// check err
sqlite3_bind_text(stmt1, 1, username.c_str(), -1, SQLITE_TRANSIENT);
sqlite3_bind_text(stmt1, 2, password.c_str(), -1, SQLITE_TRANSIENT);
sqlite3_bind_text(stmt1, 3, e.c_str(), -1, SQLITE_TRANSIENT);
sqlite3_bind_text(stmt1, 4, n.c_str(), -1, SQLITE_TRANSIENT);
sqlite3_bind_text(stmt1, 5, p.c_str(), -1, SQLITE_TRANSIENT);
sqlite3_bind_text(stmt1, 6, q.c_str(), -1, SQLITE_TRANSIENT);
// or as blob:
sqlite3_bind_blob(stmt1, 7, d.byte_ptr(), d.byte_count(), SQLITE_TRANSIENT);
err = sqlite3_step(stmt1);