Question

我一直在＆＃34;并非所有代码路径都返回值＆＃34;在以下代码中。我有下面的代码。我想我正在适当地回来，但仍然有错误。

[Route("User")]
public HttpResponseMessage Post([FromBody] Employee employee)
//FromBody forces the web api to read a simple tye from the request body.
{
    try
    {
        Employee incomingEmployee = employee;
        if (incomingEmployee == null)
        {
        Request.CreateErrorResponse(HttpStatusCode.BadRequest, "Could not read the request");
        }
        else if (UserManager.AddUser(employee) > 0)
        {
        return Request.CreateResponse(HttpStatusCode.Created);
        }
        else
        {
        return Request.CreateErrorResponse(HttpStatusCode.BadRequest, "Could not save to database");
        }
    }
    catch (Exception ex)
    {
       return Request.CreateErrorResponse(HttpStatusCode.BadRequest, ex);
    }
}

Answer 1

你在第一个if语句中忘记了一个return语句。

[Route("User")]
public HttpResponseMessage Post([FromBody] Employee employee)
//FromBody forces the web api to read a simple tye from the request body.
{
    try
    {
        Employee incomingEmployee = employee;
        if (incomingEmployee == null)
        {
     -->return Request.CreateErrorResponse(HttpStatusCode.BadRequest, "Could not read the request");
        }
        else if (UserManager.AddUser(employee) > 0)
        {
        return Request.CreateResponse(HttpStatusCode.Created);
        }
        else
        {
        return Request.CreateErrorResponse(HttpStatusCode.BadRequest, "Could not save to database");
        }
    }
    catch (Exception ex)
    {
       return Request.CreateErrorResponse(HttpStatusCode.BadRequest, ex);
    }
}

使用Try Catch时，并非所有代码路径都返回值

1 个答案: