0
不工作
我已經安裝了最新的MySQL從這個網站https://dev.mysql.com/downloads/connector/cpp/MySQL的連接器/ C++中的代碼塊
連接器/ C++ 1.1.8,這是我的main.cpp
#include <iostream>
#include <sstream>
#include <memory>
#include <string>
#include <stdexcept>
#include <stdlib.h>
/* MySQL Connector/C++ specific headers */
#include <driver.h>
#include <connection.h>
#include <statement.h>
#include <prepared_statement.h>
#include <resultset.h>
#include <metadata.h>
#include <resultset_metadata.h>
#include <exception.h>
#include <warning.h>
#define DBHOST "removed"
#define USER "removed"
#define PASSWORD "removed"
#define DATABASE "removed"
#define NUMOFFSET 1
#define COLNAME 1
using namespace std;
using namespace sql;
static void retrieve_data_and_print (ResultSet *rs, int type, int colidx,
string colname)
/* retrieve the row count in the result set */
cout << "\nRetrieved " << rs -> rowsCount() << " row(s)." << endl;
cout << "\nTestColumnName" << endl;
cout << "--------" << endl;
/* fetch the data : retrieve all the rows in the result set */
while (rs->next()) {
if (type == NUMOFFSET) {
cout << rs -> getString(colidx) << endl;
} else if (type == COLNAME) {
cout << rs -> getString(colname) << endl;
} // if-else
} // while
cout << endl;
}
int main(int argc, const char *argv[]) {
Driver *driver;
Connection *con;
Statement *stmt;
ResultSet *res;
PreparedStatement *prep_stmt;
Savepoint *savept;
int updatecount = 0;
/* initiate url, user, password and database variables */
string url(argc >= 2 ? argv[1] : DBHOST);
const string user(argc >= 3 ? argv[2] : USER);
const string password(argc >= 4 ? argv[3] : PASSWORD);
const string database(argc >= 5 ? argv[4] : DATABASE);
try {
driver = get_driver_instance();
/* create a database connection using the Driver */
con = driver -> connect(url, user, password);
/* turn off autocommit */
con -> setAutoCommit(0);
cout << "Database connection\'s autocommit mode = " << con ->
getAutoCommit() << endl;
// select database schema
con -> setSchema(database);
// create a statement object
stmt = con -> createStatement();
cout << "Executing Query: \"SELECT * FROM organizations\" ... " << endl;
/* run query */
res = stmt -> executeQuery ("SELECT * FROM organizations");
cout << "Retrieving the result set ..." << endl;
retrieve_data_and_print (res, NUMOFFSET, 1, string("TestColumnName"));
} catch (SQLException &e) {
cout << "ERROR: SQLException in " << __FILE__;
cout << " (" << __func__<< ") on line " << __LINE__ << endl;
cout << "ERROR: " << e.what();
cout << " (MySQL error code: " << e.getErrorCode();
cout << ", SQLState: " << e.getSQLState() << ")" << endl;
if (e.getErrorCode() == 1047) {
/*
Error: 1047 SQLSTATE: 08S01 (ER_UNKNOWN_COM_ERROR)
Message: Unknown command
*/
cout << "\nYour server does not seem to support Prepared Statements
at all. ";
cout << "Perhaps MYSQL < 4.1?" << endl;
}
return EXIT_FAILURE;
} catch (std::runtime_error &e) {
cout << "ERROR: runtime_error in " << __FILE__;
cout << " (" << __func__ << ") on line " << __LINE__ << endl;
cout << "ERROR: " << e.what() << endl;
return EXIT_FAILURE;
}
return EXIT_SUCCESS;
}
當我嘗試建立一個示例代碼然後顯示該錯誤消息:
這個問題似乎是在首標文件的MySQL連接器/ C + +。 通過代碼塊顯示的錯誤是在這些報頭文件
在這一點。
文字請不要圖片代碼和錯誤。 –
我應該粘貼頭文件的代碼嗎? –