angular2:http帖子未执行 [英] angular2: http post not executing

问题描述

这是我对angular 2的第一次体验.我创建了一个简单的表单并尝试提交它，但是当执行http.post时，什么都没有发生.网络标签中没有请求，没有错误.

This is my first experience with angular 2. I have created a simple form and try to submit it but when http.post is executed nothing happens. There is no request made in the network tab, there is not errors.

这是我的代码:

 save(model) {
        var uri = this._baseUri + "/api/contact/AddContact";

        let md = JSON.stringify(model);

        this.http.post(uri,
            JSON.stringify(md),
            {
                headers: new Headers({
                    'Content-Type': 'application/json'
                })
            })
           .map(res => res.json());


    }

我已经在save方法上设置了一个断点，并且正在通过那里，但是正如我所说的，什么也没有发生.我想念什么?

I have set a breakpoint on save method and is going through there but as I said nothing happens. What am I missing?

推荐答案

可观察对象是惰性的，因此即使您不想处理响应，您也需要订阅它们以使请求得以执行.

Observables are lazy so you need to subscribe on them to make the request execute even if you don't want to handle the response.

类似的东西:

save(model) {
  var uri = this._baseUri + "/api/contact/AddContact";
  let md = JSON.stringify(model);

  this.http.post(uri,
    JSON.stringify(md),
    {
      headers: new Headers({
        'Content-Type': 'application/json'
      })
    })
    .map(res => res.json()).subscribe();
  }

希望它对您有帮助， 蒂埃里

Hope it helps you, Thierry

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