The solution to the problem of sending two requests after easyui's datagrid component page is loaded

Problem description:

Using easyui's datagrid component, two requests are sent to the server after the page is loaded. The first request does not have parameters, the server reports a null pointer exception, and the second time is normal.

Reason:

The easyui-datagrid is declared using class in the html code. When loading the page, easyui first parses the datagrid, requests the URL once, and then calls the js code to initialize the datagrid to request the URL once, resulting in duplication. Loading.

Solution:

Delete the redundant class = 'easyui-datagrid'

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