将对象转化为帧(tcp协议传输的byte数组).根据字节序和字节数 通用方法

最近做一个将对象转换成tcp数据的功能,将对象按一定规律(字节序以及字节数)转换为byte数组,可以分类去解析,但是太麻烦了,代码冗长.决定采取使用一个通用的方法去实现对象转数组的功能

数据类似这种格式

TcpTransfer
transfer object (with annotation ) to tcp byte array
将带有注解的对象转换为tcp协议传输的byte数组

@Retention(RetentionPolicy.RUNTIME){
int order();
int level(); 
int size();
}

注解意义: level为层级,默认为最高3级,
继承的时候父类level为1,子类为2,子子类为3.
order为当前层级顺序,1为最优先,-1为优先级最低 顺序算法为低层级包裹高层级,
解析A类,假如A类继承自B,那么B类的order为正的字段按升序排列,再迭代考虑A类.再考虑B类Order为负字段,-1为最后,-2为倒数第二.
支持一个类最多约100个字段
size为此int转换为的字节数

对于下面示例:

@Data 
public class BasePersonBean {

@EncodeOrderAttribute(level = 1, order = 1, size = 1)
private Integer age;

@EncodeOrderAttribute(level = 1, order = 2, size = 1)
private Integer sex;
}

@Data 
public class TeacherBean extends BasePersonBean {

@EncodeOrderAttribute(level = 2,order = 1,size = 4)
private Integer studentCounts;

@EncodeOrderAttribute(level = 2,order = 2,size = 4)
private ArrayList<StudentBean> studentlist;

@EncodeOrderAttribute(level = 2,order = 3,size = 1)
private Integer teachingAge;
}

@Data 
public class StudentBean {

@EncodeOrderAttribute(level = 1,order = 1,size = 1)
private Integer age;

@EncodeOrderAttribute(level = 1,order = 2,size = 4)
private Integer money;

@EncodeOrderAttribute(level = 1,order = 3,size = 2)
private Integer friends;
}

建立实例实体:

StudentBean s1 = new StudentBean();
s1.setAge(20);
s1.setFriends(380);
s1.setMoney(1577878);
StudentBean s2 = new StudentBean();
s2.setAge(20);
s2.setFriends(380);
s2.setMoney(1577878);
StudentBean s3 = new StudentBean();
s3.setAge(20);
s3.setFriends(380);
s3.setMoney(1577878);
TeacherBean teacherBean = new TeacherBean();
teacherBean.setTeachingAge(30);
teacherBean.setStudentCounts(3);
ArrayList<StudentBean> studentList = new ArrayList<>();
studentList.add(s1);
studentList.add(s2);
studentList.add(s3);
teacherBean.setStudentlist(studentList);
teacherBean.setSex(1);
teacherBean.setAge(50);

byte[] bytes = ObjectToTcpBytes(teacherBean, teacherBean.getClass());
System.out.println(Arrays.toString(bytes));

解析teacherBean对象,结果为 :
[50, 1, 0, 0, 0, 3, 20, 0, 24, 19, -106, 1, 124, 20, 0, 24, 19, -106, 1, 124, 20, 0, 24, 19, -106, 1, 124, 30]
50 -> age(BasePersonBean)
1 -> sex(BasePersonBean)
0,0,0,3 -> teacherBean.studentCounts
20-> teacherBean.studentlist[0].age
0, 24, 19, -106 -> teacherBean.studentlist[0].money
1, 124, ->teacherBean.studentlist[0].friends
…
…
…
字节序和字节值没有差错

v1.0 基础功能实现,一些核验并未做,处于一个demo阶段,可以进行初步使用(可能会有BUG),后期功能完善优化

开发经验较弱,如有幸请指点

方法代码在这里github:https://github.com/fakefrog/TcpTransfer/tree/master