Question

如果我有端点

public class OrdersController : ApiController
{
    [Route("customers/{customerId}/orders")]
    [HttpPatch]
    public IEnumerable<Order> UpdateOrdersByCustomer(int customerId) { ... }
}

我可以这样拨打电话：

http://localhost/customers/1/orders
http://localhost/customers/bob/orders
http://localhost/customers/1234-5678/orders

但是如果我想发送日期作为查询字符串的一部分怎么办？

例如，我要发送以下内容： http://localhost/customers/1234-5678/orders?01-15-2019

如何设置端点？

public class OrdersController : ApiController
{
    [Route("customers/{customerId}/orders")]
    [HttpPatch]
    public IEnumerable<Order> UpdateOrdersByCustomer(int customerId, DateTime? effectiveDate) { ... }
}

Answer 1

在[HttpPatch]类型的请求中，仅primitive types可用作查询字符串。并且DateTime不是原始类型。

如您的示例所示，您只需将date部分传递给查询字符串，因此，您可以改用string数据类型并将其转换为action方法内的日期。像这样：

public IEnumerable<Order> UpdateOrdersByCustomer(int customerId, string effectiveDate)  //changed datatype of effectiveDate to string
{
    //converting string to DateTime? type
    DateTime? effDate = string.IsNullOrEmpty(effectiveDate) ? default(DateTime?) : DateTime.Parse(str);

    // do some logic with date obtained above
}

Answer 2

您可以将route属性修改为以下内容：

public class OrdersController : ApiController
{
    [Route("customers/{customerId}/orders/{effectiveDate?}")]
    [HttpPost]
    public IEnumerable<Order> UpdateOrdersByCustomer(int customerId, DateTime? effectiveDate) { ... }
}

使用WebAPI路由查询字符串参数

2 个答案: