对象序列化 avro的使用
1. 官网
https://avro.apache.org/
2.Avro简介
Apache Avro（以下简称 Avro）是一个数据序列化系统，是一种与编程语言无关的序列化格式，是提供一种共享数据文件的方式。Avro是Hadoop中的一个子项目，Avro是一个基于二进制数据传输高性能的中间件。Avro可以做到将数据进行序列化，适用于远程或本地大批量数据交互。在传输的过程中Avro对数据二进制序列化后节约数据存储空间和网络传输带宽。
序列化就是将对象转换成二进制流，相应的反序列化就是将二进制流再转换成对应的对象。因此，Avro就是用来在传输数据之前，将对象转换成二进制流，然后此二进制流达到目标地址后，Avro再将二进制流转换成对象
3.Avro 的特点
1.丰富的数据结构
2.一个紧凑的，快速的，二进制的数据格式
3.一个容器文件，来存储持久化数据
4.远程过程调用（RPC）
5.简单的动态语言集成。
6.Avro模式是使用JSON定义的 。这有助于以已经具有JSON库的语言实现。
JSON是一种轻量级的数据传输格式，对于大数据集，JSON数据会显示力不从心，因为JSON的格式是key：value型，每条记录都要附上key的名字，
有的时候，光key消耗的空间甚至会超过value所占空间，这对空间的浪费十分严重，尤其是对大型数据集来说，因为它不仅不够紧凑，还要重复
地加上key信息，不仅会造成存储空间上的浪费，更会增加了数据传输的压力，从而给集群增加负担，进而影响整个集群的吞吐量。而采用Avro
数据序列化系统可以比较好的解决此问题，因为用Avro序列化后的文件由schema和真实内容组成，schema只是数据的元数据，相当于JSON数据
的key信息，schema单独存放在一个JSON文件中，这样一来，数据的元数据只存了一次，相比JSON数据格式的文件，大大缩小了存储容量。从而
使得Avro文件可以更加紧凑地组织数据
4.原生类型
原生类型如下所示：
null: 表示没有值
boolean: 表示一个二进制布尔值
int: 表示32位有符号整数
long: 表示64位有符号整数
float: 表示32位的单精度浮点数
double: 表示64位双精度浮点数
bytes: 表示8位的无符号字节序列
string: Unicode 编码的字符序列
5.复杂类型
AVRO支持6种复杂类型，分别是：records, enums, arrays, maps, unions，fixed，常用的 Recoeds类型。
1.Records
Records使用类型名称“record”，并且支持三个必选属性。
type: 必有属性。
name: 必有属性，是一个JSON string，提供了记录的名字。
namespace，也是一个JSON string，用来限定和修饰name属性。
doc: 可选属性，是一个JSON string，为使用这个Schema的用户提供文档。
aliases: 可选属性，是JSON的一个string数组，为这条记录提供别名。
fields: 必选属性，是一个JSON数组，数组中列举了所有的field。
每一个field都是一个JSON对象，并且具有如下属性：
（1）name: 必选属性，field的名字，是一个JSON string
（2）doc: 可选属性，为使用此Schema的用户提供了描述此field的文档。
（3）type: 必选属性，定义Schema的一个JSON对象，或者是命名一条记录定义的JSON string。
（4）default: 可选属性，即field的默认值，当读到缺少这个field的实例时用到。默认值的允许的范围由这个field的Schama的类型决定。
order: 可选属性，指定这个field如何影响record的排序。有效的可选值为“ascending”(默认),"descending"和"ignore"
alias: JSON的string数组，为这个field提供别名。
5.代码实战
5.1 添加依赖 和插件
最新的版本：
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<parent>
<artifactId>wudl-bigdata</artifactId>
<groupId>com-wudl-bigdata</groupId>
<version>1.0-SNAPSHOT</version>
</parent>
<modelVersion>4.0.0</modelVersion>
<artifactId>kafka-avro</artifactId>
<properties>
<maven.compiler.source>8</maven.compiler.source>
<maven.compiler.target>8</maven.compiler.target>
</properties>
<dependencies>
<dependency>
<groupId>org.apache.avro</groupId>
<artifactId>avro</artifactId>
<version>1.11.0</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.apache.avro</groupId>
<artifactId>avro-maven-plugin</artifactId>
<version>1.11.0</version>
<executions>
<execution>
<phase>generate-sources</phase>
<goals>
<goal>schema</goal>
</goals>
<configuration>
<sourceDirectory>${project.basedir}/src/main/avro/</sourceDirectory>
<outputDirectory>${project.basedir}/src/main/java/</outputDirectory>
</configuration>
</execution>
</executions>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<configuration>
<source>1.8</source>
<target>1.8</target>
</configuration>
</plugin>
</plugins>
</build>
</project>
5.2 定义定义schema
{"namespace": "com.wudl.avro.bean",
"type": "record",
"name": "User",
"fields": [
{"name": "id", "type": "int"},
{"name": "name", "type": "string"},
{"name": "adress", "type":"string"},
{"name": "age", "type":"int"}
]
}
5.3 用maven 插件 package 打包 代码自动生产的类
`用maven clean package 就能生产相应的序列化类`
内容如下：
/**
* Autogenerated by Avro
*
* DO NOT EDIT DIRECTLY
*/
package com.wudl.avro.bean;
import org.apache.avro.generic.GenericArray;
import org.apache.avro.specific.SpecificData;
import org.apache.avro.util.Utf8;
import org.apache.avro.message.BinaryMessageEncoder;
import org.apache.avro.message.BinaryMessageDecoder;
import org.apache.avro.message.SchemaStore;
@org.apache.avro.specific.AvroGenerated
public class User extends org.apache.avro.specific.SpecificRecordBase implements org.apache.avro.specific.SpecificRecord {
private static final long serialVersionUID = 8427336651465463617L;
public static final org.apache.avro.Schema SCHEMA$ = new org.apache.avro.Schema.Parser().parse("{\"type\":\"record\",\"name\":\"User\",\"namespace\":\"com.wudl.avro.bean\",\"fields\":[{\"name\":\"id\",\"type\":\"int\"},{\"name\":\"name\",\"type\":\"string\"},{\"name\":\"adress\",\"type\":\"string\"},{\"name\":\"age\",\"type\":\"int\"}]}");
public static org.apache.avro.Schema getClassSchema() { return SCHEMA$; }
private static final SpecificData MODEL$ = new SpecificData();
private static final BinaryMessageEncoder<User> ENCODER =
new BinaryMessageEncoder<User>(MODEL$, SCHEMA$);
private static final BinaryMessageDecoder<User> DECODER =
new BinaryMessageDecoder<User>(MODEL$, SCHEMA$);
/**
* Return the BinaryMessageEncoder instance used by this class.
* @return the message encoder used by this class
*/
public static BinaryMessageEncoder<User> getEncoder() {
return ENCODER;
}
/**
* Return the BinaryMessageDecoder instance used by this class.
* @return the message decoder used by this class
*/
public static BinaryMessageDecoder<User> getDecoder() {
return DECODER;
}
/**
* Create a new BinaryMessageDecoder instance for this class that uses the specified {@link SchemaStore}.
* @param resolver a {@link SchemaStore} used to find schemas by fingerprint
* @return a BinaryMessageDecoder instance for this class backed by the given SchemaStore
*/
public static BinaryMessageDecoder<User> createDecoder(SchemaStore resolver) {
return new BinaryMessageDecoder<User>(MODEL$, SCHEMA$, resolver);
}
/**
* Serializes this User to a ByteBuffer.
* @return a buffer holding the serialized data for this instance
* @throws java.io.IOException if this instance could not be serialized
*/
public java.nio.ByteBuffer toByteBuffer() throws java.io.IOException {
return ENCODER.encode(this);
}
/**
* Deserializes a User from a ByteBuffer.
* @param b a byte buffer holding serialized data for an instance of this class
* @return a User instance decoded from the given buffer
* @throws java.io.IOException if the given bytes could not be deserialized into an instance of this class
*/
public static User fromByteBuffer(
java.nio.ByteBuffer b) throws java.io.IOException {
return DECODER.decode(b);
}
private int id;
private java.lang.CharSequence name;
private java.lang.CharSequence adress;
private int age;
/**
* Default constructor. Note that this does not initialize fields
* to their default values from the schema. If that is desired then
* one should use newBuilder().
*/
public User() {}
/**
* All-args constructor.
* @param id The new value for id
* @param name The new value for name
* @param adress The new value for adress
* @param age The new value for age
*/
public User(java.lang.Integer id, java.lang.CharSequence name, java.lang.CharSequence adress, java.lang.Integer age) {
this.id = id;
this.name = name;
this.adress = adress;
this.age = age;
}
public org.apache.avro.specific.SpecificData getSpecificData() { return MODEL$; }
public org.apache.avro.Schema getSchema() { return SCHEMA$; }
// Used by DatumWriter. Applications should not call.
public java.lang.Object get(int field$) {
switch (field$) {
case 0: return id;
case 1: return name;
case 2: return adress;
case 3: return age;
default: throw new IndexOutOfBoundsException("Invalid index: " + field$);
}
}
// Used by DatumReader. Applications should not call.
@SuppressWarnings(value="unchecked")
public void put(int field$, java.lang.Object value$) {
switch (field$) {
case 0: id = (java.lang.Integer)value$; break;
case 1: name = (java.lang.CharSequence)value$; break;
case 2: adress = (java.lang.CharSequence)value$; break;
case 3: age = (java.lang.Integer)value$; break;
default: throw new IndexOutOfBoundsException("Invalid index: " + field$);
}
}
/**
* Gets the value of the 'id' field.
* @return The value of the 'id' field.
*/
public int getId() {
return id;
}
/**
* Sets the value of the 'id' field.
* @param value the value to set.
*/
public void setId(int value) {
this.id = value;
}
/**
* Gets the value of the 'name' field.
* @return The value of the 'name' field.
*/
public java.lang.CharSequence getName() {
return name;
}
/**
* Sets the value of the 'name' field.
* @param value the value to set.
*/
public void setName(java.lang.CharSequence value) {
this.name = value;
}
/**
* Gets the value of the 'adress' field.
* @return The value of the 'adress' field.
*/
public java.lang.CharSequence getAdress() {
return adress;
}
/**
* Sets the value of the 'adress' field.
* @param value the value to set.
*/
public void setAdress(java.lang.CharSequence value) {
this.adress = value;
}
/**
* Gets the value of the 'age' field.
* @return The value of the 'age' field.
*/
public int getAge() {
return age;
}
/**
* Sets the value of the 'age' field.
* @param value the value to set.
*/
public void setAge(int value) {
this.age = value;
}
/**
* Creates a new User RecordBuilder.
* @return A new User RecordBuilder
*/
public static com.wudl.avro.bean.User.Builder newBuilder() {
return new com.wudl.avro.bean.User.Builder();
}
/**
* Creates a new User RecordBuilder by copying an existing Builder.
* @param other The existing builder to copy.
* @return A new User RecordBuilder
*/
public static com.wudl.avro.bean.User.Builder newBuilder(com.wudl.avro.bean.User.Builder other) {
if (other == null) {
return new com.wudl.avro.bean.User.Builder();
} else {
return new com.wudl.avro.bean.User.Builder(other);
}
}
/**
* Creates a new User RecordBuilder by copying an existing User instance.
* @param other The existing instance to copy.
* @return A new User RecordBuilder
*/
public static com.wudl.avro.bean.User.Builder newBuilder(com.wudl.avro.bean.User other) {
if (other == null) {
return new com.wudl.avro.bean.User.Builder();
} else {
return new com.wudl.avro.bean.User.Builder(other);
}
}
/**
* RecordBuilder for User instances.
*/
@org.apache.avro.specific.AvroGenerated
public static class Builder extends org.apache.avro.specific.SpecificRecordBuilderBase<User>
implements org.apache.avro.data.RecordBuilder<User> {
private int id;
private java.lang.CharSequence name;
private java.lang.CharSequence adress;
private int age;
/** Creates a new Builder */
private Builder() {
super(SCHEMA$, MODEL$);
}
/**
* Creates a Builder by copying an existing Builder.
* @param other The existing Builder to copy.
*/
private Builder(com.wudl.avro.bean.User.Builder other) {
super(other);
if (isValidValue(fields()[0], other.id)) {
this.id = data().deepCopy(fields()[0].schema(), other.id);
fieldSetFlags()[0] = other.fieldSetFlags()[0];
}
if (isValidValue(fields()[1], other.name)) {
this.name = data().deepCopy(fields()[1].schema(), other.name);
fieldSetFlags()[1] = other.fieldSetFlags()[1];
}
if (isValidValue(fields()[2], other.adress)) {
this.adress = data().deepCopy(fields()[2].schema(), other.adress);
fieldSetFlags()[2] = other.fieldSetFlags()[2];
}
if (isValidValue(fields()[3], other.age)) {
this.age = data().deepCopy(fields()[3].schema(), other.age);
fieldSetFlags()[3] = other.fieldSetFlags()[3];
}
}
/**
* Creates a Builder by copying an existing User instance
* @param other The existing instance to copy.
*/
private Builder(com.wudl.avro.bean.User other) {
super(SCHEMA$, MODEL$);
if (isValidValue(fields()[0], other.id)) {
this.id = data().deepCopy(fields()[0].schema(), other.id);
fieldSetFlags()[0] = true;
}
if (isValidValue(fields()[1], other.name)) {
this.name = data().deepCopy(fields()[1].schema(), other.name);
fieldSetFlags()[1] = true;
}
if (isValidValue(fields()[2], other.adress)) {
this.adress = data().deepCopy(fields()[2].schema(), other.adress);
fieldSetFlags()[2] = true;
}
if (isValidValue(fields()[3], other.age)) {
this.age = data().deepCopy(fields()[3].schema(), other.age);
fieldSetFlags()[3] = true;
}
}
/**
* Gets the value of the 'id' field.
* @return The value.
*/
public int getId() {
return id;
}
/**
* Sets the value of the 'id' field.
* @param value The value of 'id'.
* @return This builder.
*/
public com.wudl.avro.bean.User.Builder setId(int value) {
validate(fields()[0], value);
this.id = value;
fieldSetFlags()[0] = true;
return this;
}
/**
* Checks whether the 'id' field has been set.
* @return True if the 'id' field has been set, false otherwise.
*/
public boolean hasId() {
return fieldSetFlags()[0];
}
/**
* Clears the value of the 'id' field.
* @return This builder.
*/
public com.wudl.avro.bean.User.Builder clearId() {
fieldSetFlags()[0] = false;
return this;
}
/**
* Gets the value of the 'name' field.
* @return The value.
*/
public java.lang.CharSequence getName() {
return name;
}
/**
* Sets the value of the 'name' field.
* @param value The value of 'name'.
* @return This builder.
*/
public com.wudl.avro.bean.User.Builder setName(java.lang.CharSequence value) {
validate(fields()[1], value);
this.name = value;
fieldSetFlags()[1] = true;
return this;
}
/**
* Checks whether the 'name' field has been set.
* @return True if the 'name' field has been set, false otherwise.
*/
public boolean hasName() {
return fieldSetFlags()[1];
}
/**
* Clears the value of the 'name' field.
* @return This builder.
*/
public com.wudl.avro.bean.User.Builder clearName() {
name = null;
fieldSetFlags()[1] = false;
return this;
}
/**
* Gets the value of the 'adress' field.
* @return The value.
*/
public java.lang.CharSequence getAdress() {
return adress;
}
/**
* Sets the value of the 'adress' field.
* @param value The value of 'adress'.
* @return This builder.
*/
public com.wudl.avro.bean.User.Builder setAdress(java.lang.CharSequence value) {
validate(fields()[2], value);
this.adress = value;
fieldSetFlags()[2] = true;
return this;
}
/**
* Checks whether the 'adress' field has been set.
* @return True if the 'adress' field has been set, false otherwise.
*/
public boolean hasAdress() {
return fieldSetFlags()[2];
}
/**
* Clears the value of the 'adress' field.
* @return This builder.
*/
public com.wudl.avro.bean.User.Builder clearAdress() {
adress = null;
fieldSetFlags()[2] = false;
return this;
}
/**
* Gets the value of the 'age' field.
* @return The value.
*/
public int getAge() {
return age;
}
/**
* Sets the value of the 'age' field.
* @param value The value of 'age'.
* @return This builder.
*/
public com.wudl.avro.bean.User.Builder setAge(int value) {
validate(fields()[3], value);
this.age = value;
fieldSetFlags()[3] = true;
return this;
}
/**
* Checks whether the 'age' field has been set.
* @return True if the 'age' field has been set, false otherwise.
*/
public boolean hasAge() {
return fieldSetFlags()[3];
}
/**
* Clears the value of the 'age' field.
* @return This builder.
*/
public com.wudl.avro.bean.User.Builder clearAge() {
fieldSetFlags()[3] = false;
return this;
}
@Override
@SuppressWarnings("unchecked")
public User build() {
try {
User record = new User();
record.id = fieldSetFlags()[0] ? this.id : (java.lang.Integer) defaultValue(fields()[0]);
record.name = fieldSetFlags()[1] ? this.name : (java.lang.CharSequence) defaultValue(fields()[1]);
record.adress = fieldSetFlags()[2] ? this.adress : (java.lang.CharSequence) defaultValue(fields()[2]);
record.age = fieldSetFlags()[3] ? this.age : (java.lang.Integer) defaultValue(fields()[3]);
return record;
} catch (org.apache.avro.AvroMissingFieldException e) {
throw e;
} catch (java.lang.Exception e) {
throw new org.apache.avro.AvroRuntimeException(e);
}
}
}
@SuppressWarnings("unchecked")
private static final org.apache.avro.io.DatumWriter<User>
WRITER$ = (org.apache.avro.io.DatumWriter<User>)MODEL$.createDatumWriter(SCHEMA$);
@Override public void writeExternal(java.io.ObjectOutput out)
throws java.io.IOException {
WRITER$.write(this, SpecificData.getEncoder(out));
}
@SuppressWarnings("unchecked")
private static final org.apache.avro.io.DatumReader<User>
READER$ = (org.apache.avro.io.DatumReader<User>)MODEL$.createDatumReader(SCHEMA$);
@Override public void readExternal(java.io.ObjectInput in)
throws java.io.IOException {
READER$.read(this, SpecificData.getDecoder(in));
}
@Override protected boolean hasCustomCoders() { return true; }
@Override public void customEncode(org.apache.avro.io.Encoder out)
throws java.io.IOException
{
out.writeInt(this.id);
out.writeString(this.name);
out.writeString(this.adress);
out.writeInt(this.age);
}
@Override public void customDecode(org.apache.avro.io.ResolvingDecoder in)
throws java.io.IOException
{
org.apache.avro.Schema.Field[] fieldOrder = in.readFieldOrderIfDiff();
if (fieldOrder == null) {
this.id = in.readInt();
this.name = in.readString(this.name instanceof Utf8 ? (Utf8)this.name : null);
this.adress = in.readString(this.adress instanceof Utf8 ? (Utf8)this.adress : null);
this.age = in.readInt();
} else {
for (int i = 0; i < 4; i++) {
switch (fieldOrder[i].pos()) {
case 0:
this.id = in.readInt();
break;
case 1:
this.name = in.readString(this.name instanceof Utf8 ? (Utf8)this.name : null);
break;
case 2:
this.adress = in.readString(this.adress instanceof Utf8 ? (Utf8)this.adress : null);
break;
case 3:
this.age = in.readInt();
break;
default:
throw new java.io.IOException("Corrupt ResolvingDecoder.");
}
}
}
}
}
5.4 序列化和反序列的使用
package com.wudl.avro.testtool;
import com.wudl.avro.bean.User;
import org.apache.avro.file.DataFileReader;
import org.apache.avro.file.DataFileWriter;
import org.apache.avro.file.SeekableByteArrayInput;
import org.apache.avro.io.DatumReader;
import org.apache.avro.io.DatumWriter;
import org.apache.avro.specific.SpecificDatumReader;
import org.apache.avro.specific.SpecificDatumWriter;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
/**
* @author ：wudl
* @date ：Created in 2022-01-11 23:40
* @description：
* @modified By：
* @version: 1.0
*/
public class UserTest {
public static void main(String[] args) throws IOException {
// 序列化
// SerializingUser();
// 反序列化
// DeserializingUser();
// Byte 序列化
byte[] bytes = byteSerializingUser();
// 将数据反序列化
byteDeserializingUser(bytes);
}
/**
* User 类的序列化
*/
private static void SerializingUser() throws IOException {
List<User> list = new ArrayList<>();
User u = new User();
u.setId(1);
u.setName("flink");
u.setAdress("深圳");
u.setAge(21);
list.add(u);
User u01 = new User();
u01.setId(2);
u01.setName("flink02");
u01.setAdress("深圳-02");
u01.setAge(20);
list.add(u01);
// DatumWriter userDatumWriter = new SpecificDatumWriter(User.class);
// DataFileWriter dataFileWriter = new DataFileWriter(userDatumWriter);
// dataFileWriter.create(u.getSchema(), new File("D:\\tmp\\users-QQ.avro"));
// dataFileWriter.append(u);
// dataFileWriter.append(u01);
// System.out.println(dataFileWriter);
// dataFileWriter.close();
DatumWriter<User> userDatumWriter = new SpecificDatumWriter<User>(User.class);
DataFileWriter<User> dataFileWriter = new DataFileWriter<User>(userDatumWriter);
dataFileWriter.create(u.getSchema(), new File("D:\\tmp\\users-QQ.avro"));
// List 数组序列化
for (User user : list) {
dataFileWriter.append(user);
}
System.out.println(dataFileWriter);
dataFileWriter.close();
}
/**
* 反序列化方式
*/
private static void DeserializingUser() throws IOException {
DatumReader<User> userDatumReader = new SpecificDatumReader<User>(User.class);
DataFileReader<User> dataFileReader = new DataFileReader<User>(new File("D:\\tmp\\users-QQ.avro"), userDatumReader);
User user = null;
while (dataFileReader.hasNext()) {
user = dataFileReader.next(user);
System.out.println(user);
}
}
/**
* 序列化Byte 数组类型
*
* @return
* @throws IOException
*/
private static byte[] byteSerializingUser() throws IOException {
List<User> list = new ArrayList<>();
User u = new User();
u.setId(1);
u.setName("flink");
u.setAdress("深圳");
u.setAge(21);
list.add(u);
User u01 = new User();
u01.setId(2);
u01.setName("flink02");
u01.setAdress("深圳-02");
u01.setAge(20);
list.add(u01);
ByteArrayOutputStream byteUser = new ByteArrayOutputStream();
DatumWriter<User> userDatumWriter = new SpecificDatumWriter<User>(User.class);
DataFileWriter<User> dataFileWriter = new DataFileWriter<User>(userDatumWriter);
dataFileWriter.create(list.get(0).getSchema(), byteUser);
for (User user : list) {
dataFileWriter.append(user);
}
dataFileWriter.close();
System.out.println(byteUser.toString());
return byteUser.toByteArray();
}
/**
* 反序列化
*
* @param usersByteArray
* @throws IOException
*/
public static void byteDeserializingUser(byte[] usersByteArray) throws IOException {
SeekableByteArrayInput sbai = new SeekableByteArrayInput(usersByteArray);
DatumReader<User> userDatumReader = new SpecificDatumReader<User>(User.class);
DataFileReader<User> dataFileReader = new DataFileReader<User>(sbai, userDatumReader);
System.out.println("----------------deserialzeAvroFromByteArray-------------------");
User readUser = null;
while (dataFileReader.hasNext()) {
readUser = dataFileReader.next(readUser);
System.out.println(readUser);
}
}
}
6. 效果
"C:\Program Files\Java\jdk1.8.0_241\bin\java.exe" -agentlib:jdwp=transport=dt_socket,address=127.0.0.1:56135,suspend=y,server=n -Dvisualvm.id=6229052673800 -javaagent:C:\Users\Administrator\AppData\Local\JetBrains\IntelliJIdea2020.3\captureAgent\debugger-agent.jar -Dfile.encoding=UTF-8 -classpath "C:\Program Files\Java\jdk1.8.0_241\jre\lib\charsets.jar;C:\Program 2020.3.4\lib\idea_rt.jar" com.wudl.avro.testtool.UserTest
Connected to the target VM, address: '127.0.0.1:56135', transport: 'socket'
SLF4J: Failed to load class "org.slf4j.impl.StaticLoggerBinder".
SLF4J: Defaulting to no-operation (NOP) logger implementation
SLF4J: See http://www.slf4j.org/codes.html#StaticLoggerBinder for further details.
Objavro.schema�{"type":"record","name":"User","namespace":"com.wudl.avro.bean","fields":[{"name":"id","type":"int"},{"name":"name","type":"string"},{"name":"adress","type":"string"},{"name":"age","type":"int"}]} �Y%4��lV�c�F
flink深圳*flink02深圳-02(�Y%4��lV�c�
----------------deserialzeAvroFromByteArray-------------------
{"id": 1, "name": "flink", "adress": "深圳", "age": 21}
{"id": 2, "name": "flink02", "adress": "深圳-02", "age": 20}
Disconnected from the target VM, address: '127.0.0.1:56135', transport: 'socket'
Process finished with exit code 0