LTW3/data/item/loot_tables/comment/written_book.json

{
	"type":"minecraft:generic",
	"pools":[
		{
		"rolls":1,
		"entries":[
				{	
					"type":"item",
					"name":"minecraft:written_book",
					"functions":[
                        {
						    "function":"copy_nbt",
                            "source": "this",
						    "ops":[
                                {
                                    "source": "Inventory[{id:\"minecraft:written_book\"}].tag.pages",
                                    "target": "pages",
                                    "op":"replace"
                                },
                                {
                                    "source": "Inventory[{id:\"minecraft:written_book\"}].tag.author",
                                    "target": "author",
                                    "op":"replace"
                                },
                                {
                                    "source": "Inventory[{id:\"minecraft:written_book\"}].tag.title",
                                    "target": "title",
                                    "op":"replace"
                                }
                            ]
                        },
                        {
                            "function": "set_name",
                            "entity": "this",
                            "name":{
                                "text":"反馈主题: ",
                                "color":"aqua",
                                "italic": false,
                                "extra": [
                                    {
                                        "nbt":"Inventory[{id:\"minecraft:written_book\"}].tag.title",
                                        "entity":"@s",
                                        "color":"white"
                                    }
                                ]
                            }
                        }
                    ]
				}
			]
		}
	]
}