Fetch = fetchtype in hibernate Lazy lazy loading failure handling method

For this lazy loading problem, the final approach is to use a hibernate support class provided by spring. Its main meaning is to open the hibernate session when initiating a page request and keep the session all the time, so as to prolong the life cycle of Hibernate session until the end of the request. Specifically, it is implemented through a filter. Then, if we want to use hibernate lazy loading feature and extend the life cycle of the session to bring the data to the page display (through the action layer), we have to add the following configuration in the web.xml file:

Note: 1) opensessioninviewfilter is the filter name, * Action means to intercept all actions, or/*

2) non web page requests (such as scheduled tasks) can be processed in the following way (hibernate. Initialize (object proxy) method is forced to load, which is equivalent to dynamically changing to lazy = false)

summary

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