Swift中FDMB的使用（增、删、改、查）

直接上代码：

import UIKit

class ZWDBManager: NSObject {
    //前提将FMDBDatabase的头文件增加到桥接文件里
    var dataBase:FMDatabase?
    var lock:NSLock?
    //创建单例
    class func shareInstance()->ZWDBManager{
        struct qzSingle{
         static var predicate:dispatch_once_t = 0;
         static var instance:ZWDBManager?
 = nil
        }
        //保证单例仅仅创建一次
        dispatch_once(&qzSingle.predicate,{
            qzSingle.instance = ZWDBManager()
            })
        return qzSingle.instance!
    }
    //构造方法中对数据库进行创建并打开
    init(){
        var path:String = NSHomeDirectory().stringByAppendingString("/Documents/MCA.db")
        lock = NSLock()
        dataBase = FMDatabase(path:path)
        if dataBase!.open(){
            var createImgTableSql:String = "create table if not exists ImgInfo(Id integer primary key autoincrement,picName varchar(256),picPath varchar(256),FID varchar(256),userID varchar(256))"
             //在这里要传入两个參数：第一个为创建表的sql，第二个为多參数（若第二个參数为空，则[]里面为空；若是多个參数则将对象存入參数数组。将整个数组当做第二个參数传入）
            var isSuccessed:Bool = dataBase!.executeUpdate(createImgTableSql,withArgumentsInArray: [])
            if isSuccessed {
                println("创建图片信息表成功。")
            }else{
                println(dataBase!.lastErrorMessage())
            }
            //创建报修单表
            var createFixTableSql:String = "create table if not exists FixInfo(Id integer primary key autoincrement,UserName varchar(256),TelNum varchar(256),City varchar(256),Address varchar(256),YuYueDate varchar(256),ProName varchar(256),ModelNum varchar(256),BuyDate varchar(256),Desc varchar(256),FileName varchar(256),FileExt varchar(256),UserID varchar(256))"
            var isFixSuccessed:Bool = dataBase!.executeUpdate(createFixTableSql,withArgumentsInArray: [])
            if isFixSuccessed{
                println("创建报修单表成功！
")
            }else{
                println(dataBase!.lastErrorMessage())
            }
            
            //创建切片表
            var createPieTableSql:String = "create table if not exists PieInfo(Id integer primary key autoincrement,PieNum varchar(256),PieCount varchar(256),PieLength varchar(256),PieState varchar(256),PieCheckCode varchar(256))"
            var isPicSuccessed:Bool = dataBase!.executeUpdate(createPieTableSql,withArgumentsInArray: [])
            if isPicSuccessed{
                println("创建切片表成功！
")
            }else{
                println(dataBase!.lastErrorMessage())
            }
            
            //创建联系人表
            var createConTableSql:String = "create table if not exists ConInfo(Id integer primary key autoincrement,UserID varchar(256),UserName varchar(256),UserPhone varchar(256),UserLoc varchar(256),UserJie varchar(256))"
            var isConSuccessed:Bool = dataBase!.executeUpdate(createConTableSql,withArgumentsInArray: [])
            if isConSuccessed{
                println("创建联系人表成功！
")
            }else{
                println(dataBase!.lastErrorMessage())
            }
        }
        
        
        
    }
    //数据库增
    func insertImgWithModel(model:ZWImageModel?){
        lock!.lock()
        var insertSql:String = "insert into ImgInfo(picName,picPath,FID,userID) values(?,?,?,?)"
        var isSuccessed:Bool = dataBase!.executeUpdate(insertSql,withArgumentsInArray: [model!.picName!,model!.picPath!,model!.FID!,model!.userID!])
        if isSuccessed{
            println("插入数据库成功。")
        }else{
            println(dataBase!.lastErrorMessage)
        }
        lock!.unlock()
    }
    //删除
    func deleteWithPath(path:String?){
        lock!.lock()
        var deleteSql:String = "delete from ImgInfo where picPath = ?"
        var isSuccessed:Bool = dataBase!.executeUpdate(deleteSql,withArgumentsInArray: [path!])
        if isSuccessed{
            println("删除图片成功")
        }else{
            println(dataBase!.lastErrorMessage)
        }
        lock!.unlock()
    }
    //查询
    func fetchImagsWithFID(FID:String?)->NSArray{
        lock!.lock()
        var sql:String = "select * from ImgInfo where FID = ?"
        var rs:FMResultSet = dataBase!.executeQuery(sql,withArgumentsInArray: [FID!])
        var array:NSMutableArray = NSMutableArray()
        var i:Int = 0
        while rs.next(){
            var model:ZWImageModel = ZWImageModel()
            model.picName = rs.stringForColumn("picName")
            model.picPath = rs.stringForColumn("picPath")
            model.FID = rs.stringForColumn("FID")
            model.userID = rs.stringForColumn("userID")
            array.addObject(model)
            i++
        }
        lock!.unlock()
        return array
    }
    
}

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