性能最好的序列化反序列化，Protobuf的用法（maven项目）

快来打我* 2022-09-25 06:21 79阅读 0赞

**首先要在pom.xml里添加Protobuf的jar包**

<dependency>
              <groupId>com.dyuproject.protostuff</groupId>
              <artifactId>protostuff-core</artifactId>
              <version>1.0.8</version>
          </dependency>
    
          <dependency>
              <groupId>com.dyuproject.protostuff</groupId>
              <artifactId>protostuff-runtime</artifactId>
              <version>1.0.8</version>
          </dependency>

**序列化的实体类User.java（不需要实现Serializable接口）**

package com.serialize.entity;
    
    public class User {
    	private String id;
    	private String username;
    	private String password;
    	
    	public User() {
    	}
    	public User(String id, String username, String password) {
    		this.id = id;
    		this.username = username;
    		this.password = password;
    	}
    	public String getId() {
    		return id;
    	}
    	public void setId(String id) {
    		this.id = id;
    	}
    	public String getUsername() {
    		return username;
    	}
    	public void setUsername(String username) {
    		this.username = username;
    	}
    	public String getPassword() {
    		return password;
    	}
    	public void setPassword(String password) {
    		this.password = password;
    	}
    	@Override
    	public String toString() {
    		return "User [id=" + id + ", username=" + username + ", password="
    				+ password + "]";
    	}
    	
    
    }

**序列化的工具类SerializeUtils.java（使用了泛型方法）**

package com.serialize.utils;
    
    import com.dyuproject.protostuff.LinkedBuffer;
    import com.dyuproject.protostuff.ProtobufIOUtil;
    import com.dyuproject.protostuff.runtime.RuntimeSchema;
    
    public class SerializeUtils{
    	public static <T> byte[] serialize(T t,Class<T> clazz) {
    		return ProtobufIOUtil.toByteArray(t, RuntimeSchema.createFrom(clazz),
    				LinkedBuffer.allocate(LinkedBuffer.DEFAULT_BUFFER_SIZE));
    	}
    	public static <T> T deSerialize(byte[] data,Class<T> clazz) {
    		RuntimeSchema<T> runtimeSchema = RuntimeSchema.createFrom(clazz);
    		T t = runtimeSchema.newMessage();
    		ProtobufIOUtil.mergeFrom(data, t, runtimeSchema);
    		return t;
    	}
    }

**测试主类App.java**

package com.serialize;
    
    import com.serialize.entity.User;
    import com.serialize.utils.SerializeUtils;
    
    public class App {
    	public static void main(String[] args) {	
    		User user=new User("1","xiaobao","123456");
    		System.out.println("序列化");
    		byte[] data = SerializeUtils.serialize(user,User.class);
    		for (byte b : data) {
    			System.out.print(b);
    		}
    		System.out.println();
    		System.out.println("反序列化");
    		User user2 = SerializeUtils.deSerialize(data,User.class);
    		System.out.println(user2);
    	}
    }