Angular:为每个查询设置 Content-Type [英] Angular: set Content-Type per query

问题描述

我需要使用不同于 application/json 的 Content-Type 执行一个查询.更改默认的 $http 选项不是一个变体，因为许多查询仍然使用 JSON 数据执行.

I need to perform one query with Content-Type different than application/json. Changing default $http options is not a variant, because a lot of queries still be performed with JSON data.

我找到了例子

var req = {
            method: 'POST',
            url: 'example.com',
            headers: {
                'Content-Type': "application/x-www-form-urlencoded"
            },
            data:  "somedata"
            }

 $http(req).then(function (resp) { console.log(resp);});

但它不想工作 — Content-Type 仍然是一个 application/json.

But it don't want to work — Content-Type is still a application/json.

有什么真正的方法可以做到吗?更改 $http 默认值然后恢复不是解决方案.

Is any true way to do it right? Changing $http defaults and then restoring is not a solution.

推荐答案

您所做的不是在 angularjs 中设置标题的有效方法.

What you are doing is not a valid way to set headers in angularjs.

要添加或覆盖这些默认值，只需添加或删除属性从这些配置对象.为 HTTP 方法添加标头除了 POST 或 PUT，只需添加一个小写的新对象HTTP 方法名称作为键，例如$httpProvider.defaults.headers.get ={ 'My-Header' : 'value' }.

To add or overwrite these defaults, simply add or remove a property from these configuration objects. To add headers for an HTTP method other than POST or PUT, simply add a new object with the lowercased HTTP method name as the key, e.g. $httpProvider.defaults.headers.get = { 'My-Header' : 'value' }.

参考.https://docs.angularjs.org/api/ng/service/$http- 设置 HTTP 标头"部分

Ref. https://docs.angularjs.org/api/ng/service/$http - "Setting HTTP Headers" section

编辑.

你所做的是对的，但你错过了一件事.

What you're doing is right but you're missing one thing.

在您的场景中它不起作用，因为在使用 application/x-www-form-urlencoded 时，您需要使用 $httpParamSerializerJQLike() 对数据进行编码.还要记得把 $httpParamSerializerJQlike 作为依赖.

In your scenario it does not work because when using application/x-www-form-urlencoded you need to encode your data using $httpParamSerializerJQLike(). Also remember to put $httpParamSerializerJQLike as dependency.

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