对象转json字符串案例

测试对象与json字符串的转换

 

 json字符串转对象

stringstr = "{\"id\":\"1001\",\"name\":\"java入门\",\"price\":19.88,\"pnum\":100,\"category\":\"it\",\"description\":\"good book\"}";

system.out.println(str);

      

//创建 "对象映射" 对象

objectmapper mapper = new objectmapper();

      

book book = mapper.readvalue(str, book.class);

system.out.println(book);