Question

传递非常长的GET请求的最有效方法是什么？我在此处看到类似的问题：Very long http get request，它建议使用发布请求而不是获取？为什么会这样？

作为一个例子，我有一个包含4个multiselectlist和一个下拉列表的应用程序。用户可以选择几个选项来过滤表格并显示结果。当前，通过在URL中构建字符串，然后运行linq查询以根据用户的选择显示结果，这已包含在我的onget方法中。它可以工作，但是对我来说，传递这么长的URL似乎效率很低。使用模型绑定，还有更好的方法吗？

.cshtml文件：

<select multiple class="form-control" name="CurSelDepts" asp-items="Model.DeptList" asp-for="SelDepts"></select>
<select multiple class="form-control" name="CurSelTechs" asp-items="Model.TechOneList" asp-for="SelTechs"></select>
<select multiple class="form-control" name="CurSelTech2s" asp-items="Model.TechTwoList" asp-for="SelTech2s"></select>
<select multiple class="form-control" name="CurSelRoles" asp-items="Model.RoleList" asp-for="SelRoles"></select>
<select class="form-control col-md-6" name="CurSelEmp" asp-items="Model.EmployeeList" asp-for="SelEmp">
    <option disabled selected style="display:none">--select--</option>
</select>
<input formmethod="get" type="submit" value="Search" class="btn btn-primary btn-sm" id="searchbtn" />

.cs文件：

public MultiSelectList DeptList { get; set; }
public MultiSelectList TechOneList { get; set; }
public MultiSelectList TechTwoList { get; set; }
public SelectList EmployeeList { get; set; }
public MultiSelectList RoleList { get; set; }
public int SelEmp { get; set; }
public int SelNewEmp { get; set; }
public int[] SelRoles { get; set; }
public int[] SelDepts { get; set; }
public int[] SelTechs { get; set; }
public int[] SelTech2s { get; set; }

public async Task OnGetAsync(int[] selRoles, int[] curSelRoles, int selEmp, int curSelEmp, int[] selDepts, int[] curSelDepts, int[] selTechs, int[] curSelTechs, int[] selTech2s, int[] curSelTech2s)
{
    DeptList = new MultiSelectList(_context.ppcc_deptCds, "Id", "dept_cd", SelDepts);
    TechOneList = new MultiSelectList(_context.ppcc_techCds, "Id", "tech_cd", SelTechs);
    TechTwoList = new MultiSelectList(_context.ppcc_techTwoCds, "Id", "tech_cd_two", SelTech2s);
    RoleList = new MultiSelectList(_context.ppcc_roles, "Id", "role_nm", SelRoles);
    EmployeeList = new SelectList(_context.employees, "Id", "employee_nm", SelEmp);

    SelEmp = curSelEmp;
    SelDepts = curSelDepts;
    SelTechs = curSelTechs;
    SelTech2s = curSelTech2s;
    SelRoles = curSelRoles;

    IQueryable<ppcc_matrix> ppcc_matrixIQ = from s in _context.ppcc_matrices select s;

    if (curSelDepts.Any())  {ppcc_matrixIQ = ppcc_matrixIQ.Where(s => curSelDepts.Contains(s.ppcc_deptCdId));}
    if (curSelTechs.Any())  {ppcc_matrixIQ = ppcc_matrixIQ.Where(s => curSelTechs.Contains(s.ppcc_techCdId));}
    if (curSelTech2s.Any()) {ppcc_matrixIQ = ppcc_matrixIQ.Where(s => curSelTech2s.Contains(s.ppcc_techTwoCdId));}
    if (curSelRoles.Any())  {ppcc_matrixIQ = ppcc_matrixIQ.Where(s => curSelRoles.Contains(s.ppcc_roleId));}
    if (curSelEmp != 0) { ppcc_matrixIQ = ppcc_matrixIQ.Where(s => s.employeeId.Equals(curSelEmp)); }
}

Answer 1

模型绑定可用于GET请求和POST请求。您只需要确保用BindProperty（https://www.learnrazorpages.com/razor-pages/model-binding#binding-data-from-get-requests）的SupportsGet = true属性修饰公共属性：

[BindProperty(SupportsGet=true)]
public Type MyProperty { get; set; }

对于非常长的URL，有一个limit to the length of a GET request。 POST请求也受到服务器的限制，但是默认情况下它要大得多。例如，它需要满足文件上传的需求。

无需将很长的字符串传递给URL就能进行HTTP获取请求？

1 个答案: