Sturts2 uses the JSON-plugin method to shield irrelevant objects during serialization

 

When using struts2 JSON-plugin, if you want to serialize an action, you should block attributes that do not need to be serialized, such as Dao.

Especially Dao, if not blocked, it will cause

 

The following error occurs:

 

Org. Apache. struts2.json. jsonexception: Java. Lang. Reflect. invocationtargetexception

 

Org. apache. struts2.json. jsonexception: Org. apache. struts2.json. jsonexception: Org. apache. struts2.json. jsonexception: Org. apache. struts2.json. jsonexception: Org. apache. struts2.json. jsonexception: Org. apache. struts2.json. jsonexception: Org. apache. struts2.json. jsonexception: Org. apache. struts2.json. jsonexception: Org. apache. struts2.json. jsonexception: Org. apache. struts2.json. jsonexception: Org. apache. struts2.json. jsonexception: Java. lang. reflect. invocationtargetexceptionpache. struts2.json. jsonexception:

 

The blocking method is simple: do not set getter for the attribute to be blocked.

 

Or add the annotation @ JSON (serialize = false) before the getter of the property to be blocked.

 

Java code

@ JSON (serialize = false)

Public userdao getuserdao (){

Return userdao;

}