javascript - 将 int 数组传递给 MVC Controller

Question

我有一个 JavaScript 函数，我在其中传递了 4 个数组，每个数组都是这种类型[1, 2] 内部只有 int 值或 [] 内部没有任何值。这些被传递到 Url.Action 命令中。

function Filter(locations, machines, severities, messages) {
    var url = '@Url.Action("Filter", "ActiveMessages")?' + $.param({ 
        locations: locations, machines: machines, severities: severities, messages: messages });
    $.ajax({
        url: url,
        method: 'POST',
        traditional: true,
        success: function (data) { }
    });
}

我尝试使用 $.param() 构建参数。但这并没有生成我期望的参数，我得到这样的结果:"/ActiveMessages/Filter?locations%5B%5D=1"

我也试过这样做:

decodeURIComponent($.param({ locations: filterlocations, machines: filtermachines, severities: filterseverities, messages: filtermessages }))

然后我得到这样的东西:"/ActiveMessages/Filter?locations[]=1&locations[]=2"

还有其他方法可以将这样的数组解析为 url 吗？

接收发生在 Controller 中:

public async Task<ActionResult> Filter(int[] locations, int[] machines, int[] severities, int[] messages)
{
    //TODO filter
}

这被调用但参数为空；

刚开始时，我使用了它，它适用于单个值，但需要扩展到数组。

var url = '@Url.Action("Filter", "ActiveMessages")' + '?locations=' + locations + '&machines=' + machines + '&severities=' + severities + '&messages=' + messages;

Answer 1

发布操作的最佳实践是使用正文发送发布参数(注意参数的 [FromBody] 注释):

[HttpPost]
public async Task<ActionResult> Filter([FromBody] int[] locations, [FromBody] int[] machines, [FromBody] int[] severities, [FromBody] int[] messages)

需要在ajax调用的主体中指定参数:

function Filter(locations, machines, severities, messages) {
     var url = '@Url.Action("Filter", "ActiveMessages")';
     $.ajax({
          url: url,
          method: 'POST',
          data: JSON.stringify({ locations: locations, machines: machines, severities: severities, messages: messages }),
          traditional: true,
          success: function (data) {
     }});
 }