c++将txt数据批量导入mysql数据库的例子

Posted 2022-07-31 真爱无限

包括多线程的使用，数据库的操作和打开文件对话框的使用。

#include "stdafx.h"
#include <windows.h>
#include <windowsx.h>
#include "resource.h"
#include "MainDlg.h"
#include <SQL.H>//连接库：odbc32.lib odbccp32.lib
#include <SQLEXT.H>//数据库头文件
#include <SQLTYPES.H>//数据库头文件
#include <COMMDLG.H>//OPENFILENAME 头文件
#include<STRING.H>
#define LOGIN_TIMEOUT 30
#define MAXBUFLEN 255
///#define CHECKDBSTMTERROR(hwnd,result,hstmt) 
char szFile[MAX_PATH];
BOOL ImportStatus = FALSE; //导入状态标志
SQLHENV henv = NULL;
SQLHDBC hdbc = NULL;
SQLHSTMT hstmt = NULL;
SQLRETURN result;
SQLCHAR ConnStrIn[MAXBUFLEN] = "DRIVER=mysql ODBC 5.1 Driver;SERVER=127.0.0.1;UID=root;PWD=123456;DATABASE=Test;CharSet=gbk;";
SQLCHAR ConnStrOut[MAXBUFLEN];

void ShowDBError(HWND hwnd,SQLSMALLINT type,SQLHANDLE sqlHandle)

    char pStatus[10], pMsg[101];
    SQLSMALLINT SQLmsglen;
    char error[200] = 0;
    SQLINTEGER SQLerr;
    long erg2 = SQLGetDiagRec(type, sqlHandle,1,
		(SQLCHAR *)pStatus,&SQLerr,(SQLCHAR *)pMsg,100,&SQLmsglen);
    wsprintf(error,"%s (%d)\\n",pMsg,(int)SQLerr);
    MessageBox(hwnd,error,TEXT("数据库执行错误"),MB_ICONERROR|MB_OK);

void ShowDBConnError(HWND hwnd,SQLHDBC hdbc)

	ShowDBError(hwnd,SQL_HANDLE_DBC,hdbc);

void ShowDBStmtError(HWND hwnd,SQLHSTMT hstmt)

	ShowDBError(hwnd,SQL_HANDLE_STMT,hstmt);

//查检是否有错误
BOOL CHECKDBSTMTERROR(HWND hwnd,SQLRETURN result,SQLHSTMT hstmt)

	if(SQL_ERROR==result)
	
		ShowDBStmtError(hwnd,hstmt);
		return TRUE;
	 
	else 
	
		return FALSE;
	

BOOL WINAPI Main_Proc(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam)

    switch(uMsg)
    
        HANDLE_MSG(hWnd, WM_INITDIALOG, Main_OnInitDialog);
        HANDLE_MSG(hWnd, WM_COMMAND, Main_OnCommand);
		HANDLE_MSG(hWnd,WM_CLOSE, Main_OnClose);
    

    return FALSE;


BOOL Main_OnInitDialog(HWND hwnd, HWND hwndFocus, LPARAM lParam)

    return TRUE;

//选择文件
void openfile(HWND hwnd)

OPENFILENAME ofn;//定义一个OPENFILENAME类型的结构体。
				ZeroMemory(&ofn,sizeof(ofn));//使用结构体变量前把该结构体变量各个位清零。
				ofn.lStructSize = sizeof(ofn);
				ofn.lpstrFile = szFile; 
				ofn.lpstrFile[0] = TEXT('\\0');
				ofn.nMaxFile = sizeof(szFile);
				ofn.lpstrFilter = TEXT("ALL\\0*.*\\0文本文档\\0*.TXT\\0");
				ofn.nFilterIndex = 2;
				ofn.lpstrFileTitle = NULL;
				ofn.nMaxFileTitle = 0;
				ofn.lpstrInitialDir = NULL;
				ofn.Flags = OFN_EXPLORER |OFN_PATHMUSTEXIST | OFN_FILEMUSTEXIST;
				if (GetOpenFileName(&ofn))
				
					SetDlgItemText(hwnd,IDC_FILEINFO,szFile);
				

BOOL inport_begin(HWND hwnd)

	//分配环境句柄
	result = SQLAllocHandle(SQL_HANDLE_ENV, SQL_NULL_HANDLE, &henv);
	//设置管理环境属性
	result = SQLSetEnvAttr(henv, SQL_ATTR_ODBC_VERSION, (void*)SQL_OV_ODBC3, 0);
	//分配连接句柄
	result = SQLAllocHandle(SQL_HANDLE_DBC, henv, &hdbc);
	//设置连接属性
	result = SQLSetConnectAttr(hdbc, SQL_LOGIN_TIMEOUT, (void*)LOGIN_TIMEOUT, 0);
	//连接数据库
	result = SQLDriverConnect(hdbc,NULL,ConnStrIn,SQL_NTS,ConnStrOut,MAXBUFLEN,(SQLSMALLINT *)0,SQL_DRIVER_NOPROMPT);
	if(SQL_ERROR==result)
	
		ShowDBConnError(hwnd,hdbc);
		return FALSE;
	
	ImportStatus = TRUE;
	return TRUE;

DWORD WINAPI ThreadFunc(LPVOID lpParam)                //多线程任务

	HWND hwnd = (HWND)lpParam;
	char str[50];
	char fname[11];
	char fage[11];
	int  age;
	int i,j,k;
	int IntoNum = 0;
	//TCHAR temp[256];
	
	TCHAR info[256];
	FILE * Input;
	for (i=0;szFile[i]!='\\0';++i)                        //处理绝对路径
	
		if (szFile[i]=='\\\\')
		
			szFile[i]='/';
		
	
	if(strlen(szFile)==0)SetDlgItemText(hwnd,IDC_STATUS,"请选择文件！"); return 0;
	Input = fopen(szFile,"r");                                //打开文本文档
	BOOL hasError=FALSE;
	/*创建新的数据库句柄，执行SQL语句*/
	result = SQLAllocHandle(SQL_HANDLE_STMT, hdbc, &hstmt);
	result = SQLPrepare(hstmt,(SQLCHAR *)"insert into T_Person(FName,FAge) values(?,?)",SQL_NTS);//两个占位符
	SQLINTEGER iSQL_NTS=SQL_NTS;
	while(!feof(Input)&&ImportStatus)                //判断文件流是否到末尾，并判断导入标志的状态
	
		ZeroMemory(fname,sizeof(fname)/sizeof(char));
		ZeroMemory(fage,sizeof(fage)/sizeof(char));
		ZeroMemory(str,sizeof(str)/sizeof(char));
		//ZeroMemory(temp,sizeof(temp)/sizeof(TCHAR));
		ZeroMemory(info,sizeof(info)/sizeof(TCHAR));
		fgets(str,50,Input);
		for (i=0,j=0,k=0;str[k]!='\\0';++k)                                        //将文件流中的姓名和年龄数据进行处理，存储到相应的变量中
		
			if (str[k]>='A'&&str[k]<='Z' || str[k]>='a'&&str[k]<='z')
			
				fname[i] = str[k];
				++i;
			 
			else
			
				if (str[k]>='0'&&str[k]<='9')
				
					fage[j] = str[k];
					++j;
				
			
		
		fname[i] = '\\0';
		fage[j] = '\\0';
		age = atoi(fage);
		
		if(CHECKDBSTMTERROR(hwnd,result,hstmt)==TRUE) hasError=TRUE;break;
		//给两个占位符赋值
		SQLBindParameter(hstmt,1,SQL_PARAM_INPUT,SQL_C_CHAR,SQL_CHAR,strlen(fname),0,fname,0,&iSQL_NTS);
		SQLBindParameter(hstmt,2,SQL_PARAM_INPUT,SQL_C_LONG,SQL_INTEGER,sizeof(int),0,&age,0,&iSQL_NTS);
		result =SQLExecute(hstmt);
		if(CHECKDBSTMTERROR(hwnd,result,hstmt)==TRUE) hasError=TRUE;break;
		Sleep(30);
		wsprintf(info,TEXT("正在导入第%d条数据"),++IntoNum);
		SetDlgItemText(hwnd,IDC_STATUS,info);
	

	fclose(Input);
	SQLFreeStmt(hstmt,SQL_CLOSE);
	SQLDisconnect(hdbc);                                        //如果到达末尾，跳出，并关闭数据库
	SQLFreeHandle(SQL_HANDLE_DBC,hdbc);
	SQLFreeHandle(SQL_HANDLE_ENV,henv);
	if(hasError==TRUE)
	
		SetDlgItemText(hwnd,IDC_STATUS,TEXT("数据库操作出错，取消导入！"));
	
	else if (ImportStatus)
	
		SetDlgItemText(hwnd,IDC_STATUS,TEXT("恭喜您，所有的数据都已经导入成功！"));
	
	else
	
		SetDlgItemText(hwnd,IDC_STATUS,TEXT("您已经取消了数据库的导入！"));
	
	return 0;

void Main_OnCommand(HWND hwnd, int id, HWND hwndCtl, UINT codeNotify)

    switch(id)
    
        case IDC_OK:
                
                        if(inport_begin(hwnd))
						
                        CreateThread(NULL,0,ThreadFunc,hwnd,0,0);  //开始使用多线程调用函数
						
						else
						
							SetDlgItemText(hwnd,IDC_STATUS,TEXT("数据库连接出错，取消导入！"));
						
                        break;
                
		case IDC_CANCEL:
			
				ImportStatus = FALSE;
				break;
            
		case IDC_FILEOPEN:
			openfile(hwnd);
			break;
        default:
		break;
    


void Main_OnClose(HWND hwnd)

    EndDialog(hwnd, 0);