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What does it mean? ? ?
I clicked on the link, probably to access the detailUserAction servlet. . What does the following ?id=${userMap[keyUser.userName].id} mean? . . . . . . . . . . . . . . . . The ID value obtained. . . . Is it forwarding? ? Or save? ? ? ? ?
What’s the use of that ID? ?
What is the tag? The author right-clicks on the page to view the source code and see what the id is generated