JQuery + jsp achieve linkage between provincial, municipal, and county levels (with source code) _ jquery

This article mainly introduces jQuery + jsp to achieve provincial/municipal/county-level linkage effect, and analyzes jQuery's skills related to reading MySQL databases with jsp in the form of a complete example to achieve provincial/municipal/county-level linkage effect, the complete instance source code is provided for readers to download and reference. if you need it, you can refer to the example in this article to describe how jQuery + jsp achieves the effect of three levels of association between provinces, cities, and counties. We will share this with you for your reference. The details are as follows:

Here, MySQL database is used to store information of all provinces, cities, and counties in China (Click here to download the source code)

Jar packages used

Google Gson. jar
Mysql-connector-java-5.1.13-bin.jar

Paste the experiment diagram:

Display page index. jsp

<% @ Page language = "java" import = "java. util. * "pageEncoding =" UTF-8 "%> <% String path = request. getContextPath (); String basePath = request. getScheme () + ": //" + request. getServerName () + ":" + request. getServerPort () + path + "/"; %>    Provincial/municipal level-3 linkage drop-down menu