Map 与实体类相互转换

引入阿里的pom依赖

<dependency>
   <groupId>com.alibaba</groupId>
    <artifactId>fastjson</artifactId>
    <version>1.2.54</version>
</dependency>

一、Map转实体

   Map<String, Object> authorMap = new HashMap<>();
        authorMap.put("id", 10L);
        authorMap.put("name", "蜡笔小新");
        authorMap.put("category", "分类");
        authorMap.put("score", 90);
        authorMap.put("intro", "简介");
        Book book = JSON.parseObject(JSON.toJSONString(authorMap), Book.class);
        System.out.println(book);

二、实体转Map

        Book book1 = new Book();
        book1.setId(1l);
        book1.setName("风间");
        book1.setCategory("分类");
        book1.setIntro("简介");
        book1.setScore(100);
        Map map = JSON.parseObject(JSON.toJSONString(book1), Map.class);
        System.out.println(map);

三、输出