2024年4月23日发(作者：)

3.测试代码

@ResponseBody

@RequestMapping(value="/byType",produces = "application/json; charset=utf-8")

public String byType(

@RequestParam(value="type") String type){

();

BookTypeMapper btm = per();

BookType books = peById(f(type));

y();

return String(books);

}