温馨提示×

温馨提示×

您好,登录后才能下订单哦!

密码登录×
登录注册×
其他方式登录
点击 登录注册 即表示同意《亿速云用户服务条款》

Protostuff怎么使用

发布时间:2022-03-21 15:05:54 来源:亿速云 阅读:239 作者:iii 栏目:web开发

今天小编给大家分享一下Protostuff怎么使用的相关知识点,内容详细,逻辑清晰,相信大部分人都还太了解这方面的知识,所以分享这篇文章给大家参考一下,希望大家阅读完这篇文章后有所收获,下面我们一起来了解一下吧。

  首先,引入maven依赖如下:

  <dependency>

  <groupId>io.protostuff</groupId>

  <artifactId>protostuff-core</artifactId>

  <version>1.4.4</version>

  </dependency>

  <dependency>

  <groupId>io.protostuff</groupId>

  <artifactId>protostuff-runtime</artifactId>

  <version>1.4.4</version>

  </dependency>

  之后,编写序列化工具Util:

  public class SerializeUtil {

  private static class SerializeData{

  private Object target;

  }

  @SuppressWarnings("unchecked")

  public static byte[] serialize(Object object) {

  SerializeData serializeData = new SerializeData();

  serializeData.target = object;

  Class<SerializeData> serializeDataClass = (Class<SerializeData>) serializeData.getClass();

  LinkedBuffer linkedBuffer = LinkedBuffer.allocate(1024 * 4);

  try {

  Schema<SerializeData> schema = RuntimeSchema.getSchema(serializeDataClass);

  return ProtostuffIOUtil.toByteArray(serializeData, schema, linkedBuffer);

  } catch (Exception e) {

  throw new IllegalStateException(e.getMessage(), e);

  } finally {

  linkedBuffer.clear();

  }

  }

  @SuppressWarnings("unchecked")

  public static <T> T deserialize(byte[] data, Class<T> clazz) {

  try {

  Schema<SerializeData> schema = RuntimeSchema.getSchema(SerializeData.class);

  SerializeData serializeData = schema.newMessage();

  ProtostuffIOUtil.mergeFrom(data, serializeData, schema);

  return (T) serializeData.target;

  } catch (Exception e) {

  throw new IllegalStateException(e.getMessage(), e);

  }

  }

  }

  需要注意的是RuntimeSchema.getSchema这块代码,通过翻看源码可以知道,里面已经放置了一个缓存map帮我们缓存生成的内容,所以不需要自己再加缓存了。

  由于protostuff目前不支持序列化list等对象,所以需要使用普通的POJO包装一下。

  最后,来写一个测试吧:

  public static void main(String&hellip;args) throws Exception {

  User user = new User();

  user.setUserId(123456);

  user.setAddress("I am a good boy");

  user.setNote("this is test");

  List<String> list = new ArrayList<>();

  list.add("record1");

  list.add("record2");

  list.add("record3");

  user.setRecords(list);

  Teacher teacher1 = new Teacher();

  teacher1.setName("语文老师");

  Teacher teacher2 = new Teacher();

  teacher2.setName("数学老师");

  List<Teacher> teachers = new ArrayList<>();

  teachers.add(teacher1);

  teachers.add(teacher2);

  user.setTeachers(teachers);

  byte[] b = serialize(user);

  User rst = deserialize(b, User.class);

  System.out.println(JSON.toJSONString(rst));

  }

  class User {

  private Integer userId;

  private String address;

  private String note;

  private List<String> records;

  private List<Teacher> teachers;

  public Integer getUserId() {

  return userId;

  }

  public void setUserId(Integer userId) {

  this.userId = userId;

  }

  public String getAddress() {

  return address;

  }

  public void setAddress(String address) {

  this.address = address;

  }

  public String getNote() {

  return note;

  }

  public void setNote(String note) {

  this.note = note;

  }

  public List<String> getRecords() {

  return records;

  }

  public void setRecords(List<String> records) {

  this.records = records;

  }

  public List<Teacher> getTeachers() {

  return teachers;

  }

  public void setTeachers(List<Teacher> teachers) {

  this.teachers = teachers;

  }

  }

  class Teacher{

  private String name;

  public String getName() {

  return name;

  }

  public void setName(String name) {

  this.name = name;

  }

  }

  最终的运行结果如下:

  {"address":"I am a good boy","note":"this is test","records":["record1","record2","record3"],"teachers":[{"name":"语文老师"},{"name":"数学老师"}],"userId":123456}

以上就是“Protostuff怎么使用”这篇文章的所有内容,感谢各位的阅读!相信大家阅读完这篇文章都有很大的收获,小编每天都会为大家更新不同的知识,如果还想学习更多的知识,请关注亿速云行业资讯频道。

向AI问一下细节

免责声明:本站发布的内容(图片、视频和文字)以原创、转载和分享为主,文章观点不代表本网站立场,如果涉及侵权请联系站长邮箱:is@yisu.com进行举报,并提供相关证据,一经查实,将立刻删除涉嫌侵权内容。

AI