How to get chat in real time in uniapp

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With the popularization of mobile Internet, instant messaging software has become more and more popular among users, which has also prompted developers to conduct more in-depth research and exploration of instant messaging technology. For uniapp developers, how to obtain chat software messages in real time is a problem that cannot be ignored. This article will introduce how uniapp obtains chat software messages in real time.

1. What is uniapp

First of all, we need to understand what uniapp is. uniapp is a multi-terminal development framework launched by DCloud. Through uniapp development, applications can be quickly released on multiple platforms, such as iOS, Android, H5, etc. uniapp has the characteristics of cross-platform development, which can save development costs and improve work efficiency.

2. How to obtain chat software messages

Before obtaining chat software messages in real time, what we need is to have a clear understanding of the nature of the message. For chat software, messages are composed of multiple texts, voices, pictures, videos and other contents. For different contents, we need to use different methods to obtain them.

1. How to obtain text messages

For text messages, we can obtain them in a polling manner. Polling means that the client sends a request to the server at regular intervals to obtain new message data on the server. Although this method can obtain messages in a timely manner, it will cause a waste of network resources on the client and server. Therefore, we need to set the polling interval according to actual needs.

2. How to obtain picture messages and voice messages

For picture messages and voice messages, we need to first request the relevant resources from the server, and then perform it on the client deal with. Generally, we will display thumbnails of voice messages or picture messages on the client, and then request specific content from the server when the user needs to view details. For voice messages, we also need to perform audio playback operations on the client.

3. How to obtain video messages

For video messages, we usually upload the video directly to the server and play it on the client. Compared with audio and picture messages, the acquisition and processing of video messages require more network resources and time.

3. How to obtain real-time chat messages in uniapp

1. Design and construction of database

In uniapp, we usually use server and client The model is separated on the server side, and a database is used on the server side to store and manage messages. When designing a database, we need different storage methods for different message types. For example, for text messages, we can use the text field of the database for storage; for picture messages and voice messages, we need to use binary storage and use picture thumbnails instead of the original images for display.

2. Use of WebSocket

Using WebSocket can greatly improve the efficiency of message transmission. Real-time interaction and message transmission between client and server. WebSocket can achieve the advantages of cross-domain, high efficiency, reliability, and scalability, and also supports two-way communication and the function of the server actively pushing messages. We can use the createSocket() method of uniapp-built-in on the client to create a WebSocket connection, and then listen to the client's connection on the server and actively push messages to the client when there are new messages.

3. Server construction

In the server construction, we can use Node.js for development, integrate WebSocket related libraries, and send messages to the client. Manage and push.

4. Summary

This article introduces the relevant solutions for uniapp to obtain chat software messages in real time, including the method of obtaining messages, the design and construction of the database, the use of WebSocket and the construction of the server. Of course, the above solutions are for reference only, and the specific implementation can be adjusted and optimized according to the actual situation. During the development process, we need to make appropriate technology selection and design based on user needs and product characteristics, and we also need to protect the security of user data.

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