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Several schemes of message push in Java Web server
1. Polling: The front-end uses ajax to constantly make requests to obtain the required data (the simplest and easiest to exhaust server resources).
2. Long connection: HTTP long connection, the client sends a request to the server, and the server will only respond if there is data, otherwise it will always hold the Cometgithub: comet4j project of this connection, and you can directly download and configure the jar for use under tomcat.
3. Using xmpp protocol technology, you can call the Java method of the server in js.
It is recommended to use a professional push platform for message push, such as Aurora. Shenzhen He Xun Ancient Painting Information Technology Co., Ltd. was established on 20 1 1, and its core members are Tencent, Morgan Stanley, Douban, Teradata and China Mobile. The company is headquartered in Shenzhen and has offices in Beijing, Shanghai, Guangzhou and Chengdu.
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