Can vue axios transfer file streams?

Vue axios can transmit file streams and is very convenient. As a representative of the front-end network request library, Vue axios has replaced traditional tools such as jQuery Ajax and is widely used in SPA applications. In the Vue project, Vue axios is also a very powerful tool that can easily implement various front-end request tasks.

File stream is a special data type that is widely used in front-end, such as picture upload, file upload and other scenarios. The Vue axios framework can implement file stream uploading through a series of APIs, including FormData, ArrayBuffer, Blob and other methods.

The steps to upload a file stream through Vue axios are as follows:

1. Create a FormData object

FormData is a new js type in HTML5, used to convert data Encapsulated into "key-value" form so that it can be used to send HTTP requests. When creating a FormData object, you can use the JS Blob object to encapsulate file stream data:

let formData = new FormData();
formData.append("file", new Blob([file], {type: "image/jpeg"}), "image.jpg");

Use this code to create a FormData object formData and add a formData element with the key "file" to it. Among them, the first parameter of the Blob object defines the file stream data content, the second parameter is the data type, here it is set to "image/jpeg", and the third parameter is the file name.

2. Create Vue axios request

When creating a Vue axios request, you need to pay attention to setting the data type to "multipart/form-data", which allows us to directly The FormData object is put into the request data part and sent. At the same time, you need to set the request header related information:

const config = {
  headers: {
    "Content-Type": "multipart/form-data"
  }
}

axios.post(url, formData, config);

3. Processing the request result

After submitting the request, you need to wait for the server response to return. Depending on the results returned by different servers, different processing methods can be used.

The core of front-end file upload is file streaming, which is implemented by creating a FormData object and using Vue axios to send requests based on this. At the same time, during the process of processing the request, you also need to pay attention to the setting of the request data type, so as to ensure that the file stream is correctly transmitted to the back-end server.

In short, in Vue axios, uploading file streams is very convenient and only requires some simple code to achieve it. Vue axios makes front-end network requests more convenient and simple, providing web developers with very good tools and technical support.

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