334 lines
10 KiB
Markdown
334 lines
10 KiB
Markdown
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# 描述
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1. 部署环境 ：Window Server
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2. 开发平台 ：VS2015或VS2017
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3. ORM ：SqlSugar
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4. Ioc框架 ：Unity
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5. Aop框架 ：Unity
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6. Json框架 ：Newtonsoft.Json
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7. 日志框架 : log4net
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8. 缓存 ：内存或Redis
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9. Api接口帮助：/swagger/，已按Area区域划分
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## 通用操作
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1. 明显能预知的异常，使用BaseException抛出
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```
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if (workprocess.Status != (int)WorkProcessStatus.Stop) {throw new BaseException("当前进程状态不是停止");}
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```
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2. 写日志
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```
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LogHelper.Error("错误测试str");
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LogHelper.Info("错误测试Exception");
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```
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错误日志存放在目录App_Log，当异常发生的时候，每一层包括仓储和服务层都会拦截到错误信息，可以看到每一层具体的传参情况。看日志可以通过http请求txt文件查看到。
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3.AOP事务
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方法头添加[TransactionCallHandler]，需要注意只拦截一个方法最外层的事务,一个方法只拦截一次。比如
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```
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[TransactionCallHandler]
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public void RestartStopProcess(Guid workprocessId) {}
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```
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4、关于批量操作
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在Controller层循环，在Service层只写单个处理的方法。比如例子，批量审核：
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Controller层：
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```
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[HttpPost]
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public void Audit(List<Guid> ids)
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{
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foreach(var id in ids) { _workProcessService.Audit(id);}
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}
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```
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Service层：
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```
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[TransactionCallHandler]
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public void Audit(Guid id) {}
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```
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此种方式能保证Service运用到事务，且不会出现大事务回滚的复杂情况。
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5、关于事务补充
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第三方不可逆操作在方法里需要写到最后一步，比如：
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```
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[TransactionCallHandler]
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public void TransferMoney()
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{
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1.执行保存数据库操作，更新支付状态
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2.执行微信打款操作
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}
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```
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6、SQL注入
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若对SQL注入不了解，没有把握自己写的方法会不会导致SQL注入，重点看下面的SQL操作demo，所有的SQL请求参数都采用参数化查询的方式提交。
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7、缓存
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缓存放弃使用Aop方式实现，因方法内部调用时会导致无法拦截。现使用缓存直接使用接口：IMyCodeCacheService中的Get和Set方法，比如：
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```
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private readonly IMyCodeCacheService _myCodeCacheService;
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public UserService(IMyCodeCacheService myCodeCacheService)
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{
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_myCodeCacheService = myCodeCacheService;
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}
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public string GetRegionName(Guid id)
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{
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var cacheKey = $"region-{id}";
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var cacheValue = _myCodeCacheService.Get(cacheKey);
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if(cacheValue == null)
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{
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//获取得到数据
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var data = "广东";
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_myCodeCacheService.Set(cacheKey,data,new TimeSpan(1,0,1));
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return data;
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}
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return cacheValue.ToString();
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}
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```
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8、Token授权
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头部增加：Authorization token，比如：
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header 'Authorization: CbkmWDbwqf5BGvRUA416zYRBlAM09Py_mYGXDwoFflEqsHworu'
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9、不需要授权的接口，在Controller层方法添加头：
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```
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[AllowAnonymous]
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```
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比如：
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```
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[HttpGet]
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[AllowAnonymous]
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public void ExportTest()
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{
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}
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```
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10、接口统一返回参数，格式：
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```
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{
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"Data": null,//返回如果有数据，统一放这里，不管是List还是单实体
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"ResultCode": 1,//如果接口没出错，则返回1;返回-1则接口出错
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"ErrorMessage": null//如果接口出错，这里显示出错信息
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}
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```
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11、GenerateCode
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代码自动生成，如果已存在相应的文件，除了实体外，仓储是直接跳过。
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### 代码目录结构
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```
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├── 00-Lib -- 依赖库文件夹
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├── 02-Document -- 文档文件夹
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├── 03-FrameWork -- 存放第三方开源源代码
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├── 04-MyCode.Project.Domain --域
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│ ├── Config --配置实体
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│ ├── Message --消息实体
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│ │ ├── Act --操作请求实体
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│ │ ├── Request --查询实体
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│ │ ├── Response --响应实体
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│ │ ├── Model --数据库实体
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│ │ ├── Repositories --仓储接口
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├── 05-MyCode.Project.GenerateCode --代码生成
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├── 06-MyCode.Project.Infrastructure --基础设施层
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├── 07-MyCode.Project.OutSideService --外部引用层
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├── 08-MyCode.Project.Repositories --仓储实现层
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├── 09-MyCode.Project.ScheduleTask --调度层
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├── 10-MyCode.Project.Services --服务层
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├── 11-MyCode.Project.WebApi --WEBAPI层 --
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```
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## SQL操作
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1. Insert插入成功会自动将自递增id新的值更新到实体
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```
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_workProcessRepository.Add(new WorkProcess()
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{
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FuncType = 1,
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MethodName = "",
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ParameterInfo = "",
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WorkProcessId = Guid.NewGuid(),
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UpdateTime = DateTime.Now
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});
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```
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2. 取单表的前n条数据，单表情况多参考这里写法，只返回需要的字段，不要返回表中所有字段；
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```
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return _workProcessRepository.Queryable()
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.Where(p => p.Status == (int)WorkProcessStatus.RUUNING && p.SystemType == 200)
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.Take(top)
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.OrderBy(p => p.UpdateTime).Select(p => new { p.WorkProcessId }).ToList();
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//生成Sql
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exec sp_executesql N'SELECT * FROM (SELECT [WorkProcessId] AS [WorkProcessId] ,ROW_NUMBER() OVER(ORDER BY [UpdateTime] ASC) AS RowIndex FROM [WorkProcess] WITH(NOLOCK) WHERE (( [Status] = @Status0 ) AND ( [SystemType] = @Const1 ))) T WHERE RowIndex BETWEEN 1 AND 10',N'@Status0 int,@Const1 int',@Status0=1,@Const1=200
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```
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3. Update 更新
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```
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var workProcess = _workProcessRepository.SelectFirst(p => p.WorkProcessId == Guid.Parse("7BDDBBD3-B1CD-4C25-93BA-D7BF22032108"));
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workProcess.Remark = "修改测试";
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_workProcessRepository.Update(workProcess);
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```
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4. Update 更新部分字段，如果能明确更新字段，用该方法
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```
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_workProcessRepository.Update(
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it => new WorkProcess { Remark = "测试批量修改",SystemType = 0 },
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p => p.WorkProcessId ==Guid.Parse("7BDDBBD3-B1CD-4C25-93BA-D7BF22032108"));
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//生成Sql
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exec sp_executesql N'UPDATE [WorkProcess] SET
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[Remark] = @Const0 , [SystemType] = @Const1 WHERE ( [WorkProcessId] =@constant2)',N'@Const0 nvarchar(4000),@Const1 int,@constant2 uniqueidentifier',@Const0=N'测试批量修改',@Const1=0,@constant2='7BDDBBD3-B1CD-4C25-93BA-D7BF22032108'
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```
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5.Sql语句查询返回列表
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```
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_workProcessRepository.SelectList<WorkProcess>("Select top 10 * from workprocess where systemtype=@systemtype", new { SystemType = 200 });
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//生成的Sql
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exec sp_executesql N'Select top 10 * from workprocess where systemtype=@systemtype',N'@SystemType int',@SystemType=200
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```
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6.根据一组主键Guid返回列表
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```
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var ids = new List<Guid>();
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ids.Add(Guid.Parse("6B2E752C-CBD3-4C56-80C0-0000339F982A"));
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ids.Add(Guid.Parse("E1CD8853-993C-4EFE-8863-0000FDF68054"));
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_workProcessRepository.SelectList(ids);
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//生成的Sql语句
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SELECT [WorkProcessId],[TypePath],[MethodName],[ParameterInfo],[UpdateTime],[Remark],[Status],[ExceptionInfo],[SystemType],[FuncType] FROM [WorkProcess] WITH(NOLOCK) WHERE [WorkProcessId] IN ('6b2e752c-cbd3-4c56-80c0-0000339f982a','e1cd8853-993c-4efe-8863-0000fdf68054')
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```
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7.大数据插入
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当需要插入非常多的数据时，先将数据处理好，调用Add(List)的方法，速度会很快；特别注意不要一个个去Add(Model)，这种会非常慢；
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```
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var workProcessList = new List<WorkProcess>();
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for (int i = 0; i < 1000; i++)
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{
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workProcessList.Add(new WorkProcess(){
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FuncType = 1,
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MethodName = "",
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ParameterInfo = "",
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WorkProcessId = Guid.NewGuid(),
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UpdateTime = DateTime.Now
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});
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}
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_workProcessRepository.Add(workProcessList);
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```
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8.大数据修改
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当需要修改非常多的数据时，先将数据处理好，调用Update(List)的方法，速度非常快，特别注意不要一个个去Update(Model)，这种会非常慢；另提供一个优化的方法，只批量更新需要的字段：
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```
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//lines为一组Guid集合，这里某些情况并不需要从数据库拿数据
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var workprocesses = lines.Select(line => new WorkProcess { WorkProcessId = line.WorkProcessId, TypePath = "MyCode" });
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_workProcessRepository.Update(workprocesses,it => new { it.TypePath});
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//生成的Sql
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UPDATE S SET S.[TypePath]=T.[TypePath] FROM [WorkProcess] S INNER JOIN (
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SELECT N'6b2e752c-cbd3-4c56-80c0-0000339f982a' AS [WorkProcessId],N'test201898' AS [TypePath]
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UNION ALL
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SELECT N'e1cd8853-993c-4efe-8863-0000fdf68054' AS [WorkProcessId],N'test201898' AS [TypePath]
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) T ON S.[WorkProcessId]=T.[WorkProcessId]
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```
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9、使用Sql语句查询单条数据
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```
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_workProcessRepository.SelectFirst<WorkProcess>("Select top 1 * from workprocess")
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```
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带参数：
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```
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_sysLoginRepository.SelectList<SysLogin>("select top 10 * from SysLogin where login like '%' + @key + '%'", new { key = "k" });
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```
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10、使用Sql语句查询列表数据
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```
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_workProcessRepository.SelectList<WorkProcess>("Select top 10 * from workprocess");
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```
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11、IN查询
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```
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_workProcessRepository.Queryable().In<WorkProcess>("workprocessid", "6B2E752C-CBD3-4C56-80C0-0000339F982A", "E1CD8853-993C-4EFE-8863-0000FDF68054")
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```
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根据主键IN查询：
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```
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_basCourseRepository.Queryable().In(courseIds).Select(p => new KeyValue { Text = p.Name, Value = p.Id }).ToList();
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```
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12、Count查询
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```
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_workProcessRepository.Count(p => p.SystemType == 200);
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```
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13、分页
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```
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var strSql = $@"SELECT
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L.LoginId,
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Login,
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L.Name,
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Tele,
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L.Editor,
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L.EditTime,
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L.Status,
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SR.Name AS RoleName
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FROM
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SysLogin L WITH (nolock)
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LEFT JOIN
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dbo.SysLoginRole LR WITH (NOLOCK) ON L.LoginID = LR.LoginID
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LEFT JOIN
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dbo.SysRole SR WITH (nolock) ON LR.RoleID = SR.RoleID";
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var where = new SearchCondition();
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where.AddCondition("L.MerchantID",merchantId, SqlOperator.Equal,true);
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where.AddSqlCondition("L.Login like '%' + @key + '%'",
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true,
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new SugarParameter("key", "a"));
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where.AddCondition("L.status",1,SqlOperator.Equal,true);
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var whereResult = where.BuildConditionSql();
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return this.SelectListPage<LoginListResp>(strSql, where, request.Page, request.PageSize, "EditTime desc");
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```
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14、按需读取
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```
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//这里只需要一个字段
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var loginRole = _sysLoginRoleRepository.Queryable().Where(p => p.LoginID == loginId).Select(p => new { p.RoleID }).First();
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```
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# 参考或引用
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- https://github.com/sunkaixuan/SqlSugar
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- http://jwt.io
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- https://github.com/jianxuanbing/SwashbuckleEx
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#1)给表BasMemberAccountBook增加字段handle
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#2)BasMemberAccount,BasMemberAccountBook备份一份，其中新建BasMemberAccountBook改名为BasMemberAccountBookNew，待数据完全处理好，刷完了之后再改回去
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#3)增加表tmp_member_shop_account，字段shop_id,member_id,money
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