<p>Recently, in the project docking with the backend, the interface tool uses the < code > Axios < / code > thing. Anyway, there are many pits. In the back-end request, set < code > get < / code > request, set < code > content type < / code > in < code > header < / code > to < code > Application / JSON; charset = UTF-8 < / code ></p>

I watched it for two seconds. It's easy

var $http  = axios.create({
  baseURL: url,
  headers: {
    'Content-Type': 'application/json; charset=utf-8'
  }
  ...
})

Is it easy to sprinkle water

Then? Then? what fuck? I don't have this in the header in the request, but except for the content type, it can be set

At this moment, 10000 sentences of mmp will be pushed, and Baidu's push is useless

Then I went to read the source code of ha ha, the source code axios/lib/xhr.js in the npm package. What did I write? What did I write

Line 118-129

    // Add headers to the request
    if ('setRequestHeader' in request) {
      utils.forEach(requestHeaders, function setRequestHeader(val, key) {
        if (typeof requestData === 'undefined' && key.toLowerCase() === 'content-type') {
          // Remove Content-Type if data is undefined
          delete requestHeaders[key];
        } else {
          // Otherwise add header to the request
          request.setRequestHeader(key, val);
        }
      });
    }/pre>

And look at thisifSentence segment, The dog was beheaded.
Then there are a few solutions. I'll write next

Method 1

    //Modify this code
    // Add headers to the request
    if ('setRequestHeader' in request) {
      utils.forEach(requestHeaders, function setRequestHeader(val, key) {
        //if (typeof requestData === 'undefined' && key.toLowerCase() === 'content-type') {
          // Remove Content-Type if data is undefined
          //delete requestHeaders[key];
        //} else {
          // Otherwise add header to the request
          request.setRequestHeader(key, val);
        //}
      });
    }