Protostuff工具实现ProtoBuf序列化使用详解

来源：互联网发布：2017年春运大数据编辑：程序博客网时间：2024/06/05 15:49

google原生的protobuffer使用起来相当麻烦，首先要写.proto文件，然后编译.proto文件，生成对应的.java文件，鄙人试了一次，发现真的很麻烦。而protostuff的官方网站(http://www.protostuff.io/documentation/runtime-schema/)，对于智商比较低的小编来说也略显生涩，于是鄙人就根据项目中用到的protostuff，撰写此文，以方便自己和他人加深印象和学习。

1.实战

1.maven依赖：

        <dependency>            <groupId>io.protostuff</groupId>            <artifactId>protostuff-core</artifactId>            <version>1.4.0</version>        </dependency>        <dependency>            <groupId>io.protostuff</groupId>            <artifactId>protostuff-runtime</artifactId>            <version>1.4.0</version>        </dependency>

2.ProtoBufUtil工具类:ProtoBufUtil.java

import io.protostuff.LinkedBuffer;import io.protostuff.ProtobufIOUtil;import io.protostuff.ProtostuffIOUtil;import io.protostuff.Schema;import io.protostuff.runtime.RuntimeSchema;/** * Created by zhangzh on 2017/2/20. */public class ProtoBufUtil {    public ProtoBufUtil() {    }    public static <T> byte[] serializer(T o) {        Schema schema = RuntimeSchema.getSchema(o.getClass());        return ProtobufIOUtil.toByteArray(o, schema, LinkedBuffer.allocate(256));    }    public static <T> T deserializer(byte[] bytes, Class<T> clazz) {        T obj = null;        try {            obj = clazz.newInstance();            Schema schema = RuntimeSchema.getSchema(obj.getClass());            ProtostuffIOUtil.mergeFrom(bytes, obj, schema);        } catch (InstantiationException e) {            e.printStackTrace();        } catch (IllegalAccessException e) {            e.printStackTrace();        }        return obj;    }}

3. bean类Student.java:

import io.protostuff.Tag;/** * Created by zhangzh on 2017/2/20. */public class Student {    @Tag(1)    private String name;    @Tag(2)    private String studentNo;    @Tag(3)    private int age;    @Tag(4)    private String schoolName;   // 关于@Tag,要么所有属性都有@Tag注解,要么都没有,不能一个类中只有部分属性有@Tag注解    public String getName() {        return name;    }    public void setName(String name) {        this.name = name;    }    public String getStudentNo() {        return studentNo;    }    public void setStudentNo(String studentNo) {        this.studentNo = studentNo;    }    public int getAge() {        return age;    }    public void setAge(int age) {        this.age = age;    }    public String getSchoolName() {        return schoolName;    }    public void setSchoolName(String schoolName) {        this.schoolName = schoolName;    }    @Override    public String toString() {        return "Student{" +                "name='" + name + '\'' +                ", studentNo='" + studentNo + '\'' +                ", age=" + age +                ", schoolName='" + schoolName + '\'' +                '}';    }}

3.test类ProtoBufUtilTest.java:

import java.util.Arrays;/** * Created by zhangzh on 2017/2/20. */public class ProtoBufUtilTest {    public static void main(String[] args) {        Student student = new Student();        student.setName("lance");        student.setAge(28);        student.setStudentNo("2011070122");        student.setSchoolName("BJUT");        byte[] serializerResult = ProtoBufUtil.serializer(student);        System.out.println("serializer result:" + Arrays.toString(serializerResult));        Student deSerializerResult = ProtoBufUtil.deserializer(serializerResult,Student.class);        System.out.println("deSerializerResult:" + deSerializerResult.toString());    }}

4.输出结果:

serializer result:[10, 5, 108, 97, 110, 99, 101, 18, 10, 50, 48, 49, 49, 48, 55, 48, 49, 50, 50, 24, 28, 34, 4, 66, 74, 85, 84]deSerializerResult:Student{name='lance', studentNo='2011070122', age=28, schoolName='BJUT'}

看，简单吧！

参考资料：1. protostuff官方网站.

2. Protostuff序列化.

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