SQLite常用语句

// 错误存储路径

- (NSString *)dataFilePath{

NSString *dbPath = [NSSearchPathForDirectoriesInDomains(NSLibraryDirectory, NSUserDomainMask, YES) lastObject];

NSString *db_absoluteString = [dbPath stringByAppendingPathComponent:@"personal.db"]; // 找到personal.db数据库

NSLog(@"db_absoluteString: %@",db_absoluteString);

return db_absoluteString; // 返回数据库的路径

}

//插入数据

- (NSString *)insertDBFilePath{

NSString *dbPath = [NSSearchPathForDirectoriesInDomains(NSLibraryDirectory, NSUserDomainMask, YES) lastObject];

NSString *db_absoluteString = [dbPath stringByAppendingPathComponent:@"cmread.sqlite"];

// NSLog(@"db_absoluteString: %@",db_absoluteString);

return db_absoluteString;

}

//获得所有个人信息

- (NSMutableArray *)getStoredPersons{

// 打开数据库

// UTFString格式

//  数据文件路径

if(sqlite3_open([[self dataFilePath] UTF8String],&database) !=SQLITE_OK){

sqlite3_close(database); // 关闭数据库

NSLog(@"open database failed!");

return nil;

}

NSMutableArray *array = [[NSMutableArray alloc] init];

NSString *query = [[NSString alloc] initWithFormat: @"select zaccountname,zlastlogintime,zlogincount from zLoginRecord order by zlastlogintime desc"];

sqlite3_stmt *statement;

if(sqlite3_prepare_v2(database, [query UTF8String],-1,&statement,nil) == SQLITE_OK){

while(sqlite3_step(statement) == SQLITE_ROW){

CMLoginRecord *loginRecord = [[CMLoginRecord alloc] init];

char *loginRecordKey = (char *)sqlite3_column_text(statement, 0);

if (loginRecordKey == NULL) {

loginRecord.accountname = nil;

}else {

NSString *_loginRecord = [[NSString alloc] initWithUTF8String:loginRecordKey];

loginRecord.accountname = _loginRecord;

}

char *lastlogintimeKey = (char *)sqlite3_column_text(statement, 1);

if (lastlogintimeKey == NULL) {

loginRecord.lastlogintime = nil;

}else {

NSString *_lastlogintime = [[NSString alloc] initWithUTF8String:lastlogintimeKey];

loginRecord.lastlogintime = _lastlogintime;

}

int logincount = sqlite3_column_int(statement, 2);

loginRecord.logincount = @(logincount);

[array addObject:loginRecord];

}

sqlite3_finalize(statement);

}

sqlite3_close(database);

return array;

}

// 插入个人信息

- (NSInteger)insertPersonl:(NSMutableArray *)array{

BOOL isInsertSuccess = NO;

// 打不开的话，就关闭

if(sqlite3_open([[self insertDBFilePath] UTF8String],&database) !=SQLITE_OK){

sqlite3_close(database);

return 1;

}

char *insert = "insert into zAccount(zaccountname,zlastlogintime,zlogincount) values(?,?,?);";// 要记住分号

for (CMLoginRecord *loginRecord in array) {

sqlite3_stmt *stmt;

if(sqlite3_prepare_v2(database,insert,-1,&stmt,nil) == SQLITE_OK){

sqlite3_bind_text(stmt, 1, [loginRecord.accountname UTF8String],-1,NULL);

sqlite3_bind_text(stmt, 2, [loginRecord.lastlogintime UTF8String],-1,NULL);

sqlite3_bind_int(stmt, 3, [loginRecord.logincount intValue]);

}

if(sqlite3_step(stmt)!= SQLITE_DONE){

NSLog(@"Error insert data into zLoginRecord error !");

}else{

//删除原来的数据库

isInsertSuccess = YES;

}

sqlite3_finalize(stmt);

}

sqlite3_close(database);

if (isInsertSuccess) {

NSString *path = [self dataFilePath];

NSFileManager *fileManager = [NSFileManager defaultManager];

if ([fileManager fileExistsAtPath:path]) {

[fileManager removeItemAtPath:path error:nil];

}

NSLog(@"删除原来的数据库");

}

return 0;

}