iOS sqlite 增删改查 简单封装(基于 FMDB)

/**
 *  对 sqlite 的使用进行简单封装,仅涉及简单的单表 增删改查
 *
 *  基于 FMDB
 *
 *  操作基于 model ,数据库表字段与 model 属性一一对应,对 model 整体进行操作
 *
 *  根据 model 对象自动建表,字段类型只支持 NSString , NSIteger , float
 *
 *  用到 runtime 运行时获取 model 属性
 *
 */

 //
 //  AGDatabaseManager.h
 //
 //  Created by Ager on 15/11/10.
 //  Copyright © 2015年 Ager. All rights reserved.
 //

 /**
  *  对 sqlite 的使用进行简单封装,仅涉及简单的单表 增删改查
  *
  *  基于 FMDB
  *
  *  操作基于 model ,数据库表字段与 model 属性一一对应,对 model 整体进行操作
  *
  *  根据 model 对象自动建表,字段类型只支持 NSString , NSIteger , float
  *
  *  用到 runtime 运行时获取 model 属性
  *
  */

 #import <Foundation/Foundation.h>

 @interface AGDatabaseManager : NSObject

 + (AGDatabaseManager*)shareAGDatabaseManager;

 /**
  *  创建表格
  *
  *  @param cls    model 类
  *  @param tbName 表名
  *  @param keyName 主键字段
  *  @param key    主键的属性设置
  *
  *  @return 创建表格是否成功
  */
 - (BOOL)creatTable:(Class)cls tableName:(NSString*)tbName keyName:(NSString*)keyName primaryKey:(NSString*) key;

 /**
  *  向表格插入数据
  *
  *  @param model  数据模型与数据库表格对应
  *  @param tbName 要操作的表名
  *
  *  @return 添加是否成功
  */
 - (BOOL)insert:(id)model tableName:(NSString*)tbName;

 /**
  *  更新数据
  *
  *  @param tbName 要操作的表名
  *  @param model 数据模型与数据库表格对应
  *  @param str   更新操作查要更新的数据的条件
  *
  *  @return 更新是否成功
  */
 - (BOOL)update:(id)model tableName:(NSString*)tbName where:(NSString*)str;

 /**
  *  删除数据
  *
  *  @param tbName 要删除数据的表名
  *  @param str    要删除的数据的查找条件
  *
  *  @return 删除是否成功
  */
 - (BOOL)deleteTableName:(NSString*)tbName where:(NSString*)str;

 /**
  *  查询数据
  *
  *  @param model  数据模型与数据库表格对应
  *  @param tbName 要操作的表名
  *  @param str    删除操作查要删除的数据的条件
  *
  *  @return 查询结果 (数组每一项为字典)
  */
 - (NSArray*)select:(Class)model tableName:(NSString*)tbName where:(NSString*)str;

 /**
  *  查询全部数据
  *
  *  @param model  数据模型与数据库表格对应
  *  @param tbName 要操作的表名
  *
  *  @return 查询结果 (数组每一项为字典)
  */
 - (NSArray*)selectALL:(Class)model tableName:(NSString*)tbName;

 @end

AGDatabaseManager.h

 //
 //  AGDatabaseManager.m
 //
 //  Created by Ager on 15/11/10.
 //  Copyright © 2015年 Ager. All rights reserved.
 //

 #import "AGDatabaseManager.h"
 #import "FMDatabase.h"
 #import <objc/runtime.h>

 static FMDatabase *fmdb = nil;

 @implementation AGDatabaseManager

 - (instancetype)init{
     if (self = [super init]) {

         static dispatch_once_t oneToken;
         dispatch_once(&oneToken, ^{
             NSString *document = NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES)[];
             NSString *filePath = [document stringByAppendingPathComponent:@"database.sqlite"];
             NSLog(@"%@",document);
             fmdb = [FMDatabase databaseWithPath:filePath];

         });
     }
     return self;
 }

 + (AGDatabaseManager*)shareAGDatabaseManager{
     return [[AGDatabaseManager alloc]init];
 }

 - (BOOL)creatTable:(Class)cls tableName:(NSString*)tbName keyName:(NSString*)keyName primaryKey:(NSString*) key{

     NSArray *array = [self getModelAllProperty:cls];
     NSMutableString *sql = [NSMutableString stringWithFormat:@"CREATE TABLE IF NOT EXISTS %@ (",tbName];

     for (int i = ; i < array.count; i++) {
         NSDictionary *dic = array[i];
         [sql appendFormat:@"%@  %@ ",[dic objectForKey:@"name"],[dic objectForKey:@"type"]];
         if(keyName != nil && [keyName isEqualToString:[dic objectForKey:@"name"]]){
             [sql appendString:key];
         }
         if (i < array.count - ){
             [sql appendString:@","];
         }
     }

     [sql appendString:@")"];

     NSLog(@"创建表格: %@",sql);

     [fmdb open];
     BOOL result = [fmdb executeUpdate:[sql copy]];
     NSLog(@"创建表格:%@",result ? @"成功":@"失败");
     [fmdb close];
     return result;
 }

 - (BOOL)insert:(id)model tableName:(NSString*)tbName{

     NSArray *array = [self getModelAllProperty:[model class]];

     NSMutableString *propertyStr = [[NSMutableString alloc]init];
     NSMutableString *valuesStr = [[NSMutableString alloc]init];

     for (int i = ; i < array.count; i++) {
         NSDictionary *dic = array[i];
         [propertyStr appendString:[dic objectForKey:@"name"]];
         [valuesStr appendFormat:@"'%@'",[model valueForKey:[dic objectForKey:@"name"]]];

         if (i < array.count - ){
             [propertyStr appendString:@","];
             [valuesStr appendString:@","];
         }
     }
     NSMutableString *sql = [NSMutableString stringWithFormat:@"INSERT INTO %@ (%@) values (%@)",tbName,propertyStr ,valuesStr];
     NSLog(@"添加数据 : %@",sql);
     [fmdb open];
     BOOL result = [fmdb executeUpdate:[sql copy]];
     [fmdb close];
      NSLog(@"添加数据:%@",result ? @"成功":@"失败");

     return result;
 }

 - (BOOL)update:(id)model tableName:(NSString*)tbName where:(NSString*)str{
     NSArray *array = [self getModelAllProperty:[model class]];
     NSMutableString *sql = [NSMutableString stringWithFormat:@"UPDATE %@ SET ",tbName];

     for (int i = ; i < array.count; i++) {
         NSDictionary *dic = array[i];
         NSString *pro = [dic objectForKey:@"name"];
         [sql appendFormat:@"%@ = '%@'",pro,[model valueForKey:pro]];
         if (i < array.count - ){
             [sql appendString:@","];
         }
     }

     [sql appendFormat:@" where %@",str];

     NSLog(@"修改数据 : %@",sql);
     [fmdb open];
     BOOL result = [fmdb executeUpdate:[sql copy]];
     [fmdb close];
     NSLog(@"更新数据:%@",result ? @"成功":@"失败");
     return result;
 }

 - (BOOL)deleteTableName:(NSString*)tbName where:(NSString*)str{
     NSString *sql = [NSString stringWithFormat:@"delete from %@ where %@",tbName,str];
     NSLog(@"删除数据 : %@",sql);
     [fmdb open];
     BOOL result = [fmdb executeUpdate:sql];
     [fmdb close];
     NSLog(@"更新数据:%@",result ? @"成功":@"失败");
     return result;
 }

 - (NSArray*)select:(Class)model tableName:(NSString*)tbName where:(NSString*)str{
     NSString *sql = [NSString stringWithFormat:@"select * from %@ where %@",tbName,str];
     NSArray *array = [self getModelAllProperty:[model class]];
     [fmdb open];
     NSLog(@"查询数据 : %@",sql);
     FMResultSet *set = [fmdb executeQuery:sql];
     NSMutableArray *allArray = [[NSMutableArray alloc]init];
     while ([set next]) {
         NSMutableDictionary *dic = [[NSMutableDictionary alloc]init];
         for (int i = ; i < array.count; i++) {
             NSDictionary *dic1 = array[i];
             NSString *pro = [dic1 objectForKey:@"name"];
             [dic setValue:[set stringForColumn:pro] forKey:pro];
         }
         [allArray addObject:dic];
     }

     [set close];
     [fmdb close];
     return [allArray copy];
 }

 - (NSArray*)selectALL:(Class)model tableName:(NSString*)tbName {
     NSString *sql = [NSString stringWithFormat:@"select * from %@ ",tbName];
     NSArray *array = [self getModelAllProperty:[model class]];
     [fmdb open];
     NSLog(@"查询数据 : %@",sql);
     FMResultSet *set = [fmdb executeQuery:sql];
     NSMutableArray *allArray = [[NSMutableArray alloc]init];
     while ([set next]) {
         NSMutableDictionary *dic = [[NSMutableDictionary alloc]init];
         for (int i = ; i < array.count; i++) {
             NSDictionary *dic1 = array[i];
             NSString *pro = [dic1 objectForKey:@"name"];
             [dic setValue:[set stringForColumn:pro] forKey:pro];
         }
         [allArray addObject:dic];
     }

     [set close];
     [fmdb close];
     return [allArray copy];
 }

 #pragma mark --- 辅助方法 ---

 /**
  *  获取 model 类全部的属性和属性类型
  *
  *  @param cls model 类 class
  *
  *  @return 返回 model 的属性和属性类型
  */
 - (NSArray *)getModelAllProperty:(Class)cls{

     unsigned int count = ;
     objc_property_t *propertys = class_copyPropertyList(cls, &count);
     NSMutableArray *array = [NSMutableArray array];
     for (int i = ; i < count; i++) {

         objc_property_t property = propertys[i];
         NSString *propertyName = [NSString stringWithCString:property_getName(property) encoding:NSUTF8StringEncoding];

         NSString *type = [self getPropertyAttributeValue:property name:@"T"];

         if ([type isEqualToString:@"q"]||[type isEqualToString:@"i"]) {
             type = @"INTEGER";
         }else if([type isEqualToString:@"f"] || [type isEqualToString:@"d"]){
             type = @"FLOAT";
         }else{
             type = @"TEXT";
         }

         NSDictionary *dic = [NSDictionary dictionaryWithObjectsAndKeys:propertyName , @"name",type , @"type", nil];

         [array addObject:dic];

     }
     free(propertys);

     return array.copy;
 }

 /**
  *  获取属性的特征值
  */

 - (NSString*)getPropertyAttributeValue:(objc_property_t) pro name:(NSString*)name{

     unsigned int count = ;
     objc_property_attribute_t *attributes = property_copyAttributeList(pro, &count);

     for (int i =  ; i < count; i++) {
         objc_property_attribute_t attribute = attributes[i];
         if (strcmp(attribute.name, name.UTF8String) == ) {
             return [NSString stringWithCString:attribute.value encoding:NSUTF8StringEncoding];
         }
     }
     free(attributes);
     return nil;
 }

 @end

AGDatabaseManager.m

FMDB + AGDatabaseManager 文件