1. 在pom文件中添加以下依赖

    <dependency>
        <groupId>com.alibaba</groupId>
        <artifactId>fastjson</artifactId>
        <version>1.2.15</version>
    </dependency>

2. 序列化与反序列化

    Teacher teacher = new Teacher();
    teacher.setName("张三");
    Map<String, Teacher> map = new HashMap<>();
    map.put("teacher", teacher);
    String jsonString = JSON.toJSONString(map);
    System.out.println(jsonString);
    //{"teacher":{"name":"张三"}}

    Map<String, Teacher> object = JSON.parseObject(jsonString, new TypeReference<Map<String, Teacher>>() {});
    System.out.println(object);

• 复杂类型反序列化需要通过TypeReference的泛型指定类型