序列化-Json

 1 @Data
 2 public class SimplePOJO implements Serializable {
 3     String field1;
 4     String field2;
 5     public SimplePOJO(String s1, String s2) {
 6         field1 = s1;
 7         field2 = s2;
 8     }
 9     // fastjson逆序列化时要求对象必须要有一个默认的构造函数
10     public SimplePOJO(){}
11 }
12 public static void main(String[] args) throws IOException, ClassNotFoundException {
13     String jsonStr = JSON.toJSONString(student);
14     FileOutputStream fos = new FileOutputStream("C:\\Users\\user\\Desktop\\student.dat");
15     // 将字符串编码为字节数组时要和解码时使用相同字符集格式
16     fos.write(jsonStr.getBytes("utf-8"));
17     fos.close();
18     
19     FileInputStream fis = new FileInputStream( "C:\\Users\\user\\Desktop\\student.dat");
20     byte[] bytes = new byte[fis.available()];
21     fis.read(bytes);
22     String deJsonStr = new String(bytes,"utf-8");
23     SimplePOJO deStudent = JSON.parseObject(jsonStr, SimplePOJO.class);
24 }