1 Google Protobuf

1.1 简介

不同版本生成的类文件不同。
//TODO

1.2 版本与下载

不同版本生成的类不同，因此生成类的版本与依赖版本要一致。

版本：3.16.0
下载地址：https://github.com/protocolbuffers/protobuf/releases

2 Usage

2.1 .proto实体类

syntax = "proto3";

package common.entity;

message User {

    string username = 1;
    string sex = 2;
    int32 age = 3;

}

2.2 生成类

通过终端进入解压后的protobuf的bin目录

• cmd

protoc --proto_path=D:\JProject\jiguang_test  --java_out=D:\JProject\jiguang_test\test  D:\JProject\jiguang_test\user-from-proto.proto

• 类
  见附件。

2.3 依赖

• 版本

<properties>
    <commons-lang3.version>3.11</commons-lang3.version>
    <bean-utils.version>1.9.4</bean-utils.version>
    <druid.version>1.1.10</druid.version>
    <protobuf.java.version>3.16.0-rc-2</protobuf.java.version>
    <protobuf.java.util.version>3.16.0-rc-2</protobuf.java.util.version>
    <protobuf.java.format.version>1.4</protobuf.java.format.version>
</properties>

• 依赖

<dependency>
    <groupId>com.google.protobuf</groupId>
    <artifactId>protobuf-java</artifactId>
    <version>${protobuf.java.version}</version>
</dependency>
<dependency>
    <groupId>com.google.protobuf</groupId>
    <artifactId>protobuf-java-util</artifactId>
    <version>${protobuf.java.util.version}</version>
</dependency>
<dependency>
    <groupId>com.googlecode.protobuf-java-format</groupId>
    <artifactId>protobuf-java-format</artifactId>
    <version>${protobuf.java.format.version}</version>
</dependency>

2.4 编码

package datastructure;

import com.google.protobuf.InvalidProtocolBufferException;
import common.entity.UserFromProto;

import java.util.logging.Logger;

import static common.constant.DigitalConstant.SIX;

/**
 * Google proto数据序列化测试.
 *
 * @author xindaqi
 * @date 2021-05-08 9:59
 */
public class GoogleProtoTest {

    private static final Logger logger = Logger.getLogger("GoogleProtoTest");

    /**
     * 通过Google protobuf创建类
     *
     * @return 对象字节数组
     * @throws InvalidProtocolBufferException
     */
    public static byte[] createObjectFromProto() throws InvalidProtocolBufferException {
        UserFromProto.User.Builder userBuilder = UserFromProto.User.newBuilder();
        userBuilder.setAge(SIX)
                .setUsername("xiaoxiao")
                .setSex("male");
        logger.info("Proto创建的类：" + userBuilder);
        return userBuilder.build().toByteArray();
    }

    public static void main(String[] args) {
        try {
            byte[] params = createObjectFromProto();
        } catch(InvalidProtocolBufferException ipe) {
            throw new RuntimeException(ipe);
        } catch(Exception e) {
            throw new RuntimeException(e);
        }
    }
}

• 结果
  五月 08, 2021 10:54:57 上午 datastructure.GoogleProtoTest createObjectFromProto
  信息: Proto创建的类：username: “xiaoxiao”
  sex: “male”
  age: 6

2.5 解码

package datastructure;

import com.google.protobuf.InvalidProtocolBufferException;
import common.entity.UserFromProto;

import java.util.logging.Logger;

import static common.constant.DigitalConstant.SIX;

/**
 * Google proto数据序列化测试.
 *
 * @author xindaqi
 * @date 2021-05-08 9:59
 */
public class GoogleProtoTest {

    private static final Logger logger = Logger.getLogger("GoogleProtoTest");

    /**
     * 通过Google protobuf创建类
     *
     * @return 对象字节数组
     * @throws InvalidProtocolBufferException
     */
    public static byte[] createObjectFromProto() throws InvalidProtocolBufferException {
        UserFromProto.User.Builder userBuilder = UserFromProto.User.newBuilder();
        userBuilder.setAge(SIX)
                .setUsername("xiaoxiao")
                .setSex("male");
        logger.info("Proto创建的类：" + userBuilder);
        return userBuilder.build().toByteArray();
    }

    /**
     * 解析字节数组，转换为对象
     *
     * @param params 字节数组
     * @throws InvalidProtocolBufferException
     */
    public static void parseObjectFromProto(byte[] params) throws InvalidProtocolBufferException {
        logger.info("入参：" + params);
        UserFromProto.User user = UserFromProto.User.parseFrom(params);
        logger.info("Proto解析字节结果：" + user);
        logger.info("username: " + user.getUsername());
    }

    public static void main(String[] args) {
        try {
            byte[] params = createObjectFromProto();
            parseObjectFromProto(params);
        } catch(InvalidProtocolBufferException ipe) {
            throw new RuntimeException(ipe);
        } catch(Exception e) {
            throw new RuntimeException(e);
        }

    }
}

• 结果
  五月 08, 2021 10:54:57 上午 datastructure.GoogleProtoTest parseObjectFromProto
  信息: 入参：[B@3d012ddd
  五月 08, 2021 10:54:57 上午 datastructure.GoogleProtoTest parseObjectFromProto
  信息: Proto解析字节结果：username: “xiaoxiao”
  sex: “male”
  age: 6

五月 08, 2021 10:54:57 上午 datastructure.GoogleProtoTest parseObjectFromProto
信息: username: xiaoxiao

3 附件

// Generated by the protocol buffer compiler.  DO NOT EDIT!
// source: user-from-proto.proto

package common.entity;

public final class UserFromProto {
  private UserFromProto() {}
  public static void registerAllExtensions(
          com.google.protobuf.ExtensionRegistryLite registry) {
  }

  public static void registerAllExtensions(
          com.google.protobuf.ExtensionRegistry registry) {
    registerAllExtensions(
            (com.google.protobuf.ExtensionRegistryLite) registry);
  }
  public interface UserOrBuilder extends
          // @@protoc_insertion_point(interface_extends:common.entity.User)
          com.google.protobuf.MessageOrBuilder {

    /**
     * <code>string username = 1;</code>
     * @return The username.
     */
    java.lang.String getUsername();
    /**
     * <code>string username = 1;</code>
     * @return The bytes for username.
     */
    com.google.protobuf.ByteString
    getUsernameBytes();

    /**
     * <code>string sex = 2;</code>
     * @return The sex.
     */
    java.lang.String getSex();
    /**
     * <code>string sex = 2;</code>
     * @return The bytes for sex.
     */
    com.google.protobuf.ByteString
    getSexBytes();

    /**
     * <code>int32 age = 3;</code>
     * @return The age.
     */
    int getAge();
  }
  /**
   * Protobuf type {@code common.entity.User}
   */
  public static final class User extends
          com.google.protobuf.GeneratedMessageV3 implements
          // @@protoc_insertion_point(message_implements:common.entity.User)
          UserOrBuilder {
    private static final long serialVersionUID = 0L;
    // Use User.newBuilder() to construct.
    private User(com.google.protobuf.GeneratedMessageV3.Builder<?> builder) {
      super(builder);
    }
    private User() {
      username_ = "";
      sex_ = "";
    }

    @java.lang.Override
    @SuppressWarnings({"unused"})
    protected java.lang.Object newInstance(
            UnusedPrivateParameter unused) {
      return new User();
    }

    @java.lang.Override
    public final com.google.protobuf.UnknownFieldSet
    getUnknownFields() {
      return this.unknownFields;
    }
    private User(
            com.google.protobuf.CodedInputStream input,
            com.google.protobuf.ExtensionRegistryLite extensionRegistry)
            throws com.google.protobuf.InvalidProtocolBufferException {
      this();
      if (extensionRegistry == null) {
        throw new java.lang.NullPointerException();
      }
      com.google.protobuf.UnknownFieldSet.Builder unknownFields =
              com.google.protobuf.UnknownFieldSet.newBuilder();
      try {
        boolean done = false;
        while (!done) {
          int tag = input.readTag();
          switch (tag) {
            case 0:
              done = true;
              break;
            case 10: {
              java.lang.String s = input.readStringRequireUtf8();

              username_ = s;
              break;
            }
            case 18: {
              java.lang.String s = input.readStringRequireUtf8();

              sex_ = s;
              break;
            }
            case 24: {

              age_ = input.readInt32();
              break;
            }
            default: {
              if (!parseUnknownField(
                      input, unknownFields, extensionRegistry, tag)) {
                done = true;
              }
              break;
            }
          }
        }
      } catch (com.google.protobuf.InvalidProtocolBufferException e) {
        throw e.setUnfinishedMessage(this);
      } catch (java.io.IOException e) {
        throw new com.google.protobuf.InvalidProtocolBufferException(
                e).setUnfinishedMessage(this);
      } finally {
        this.unknownFields = unknownFields.build();
        makeExtensionsImmutable();
      }
    }
    public static final com.google.protobuf.Descriptors.Descriptor
    getDescriptor() {
      return common.entity.UserFromProto.internal_static_common_entity_User_descriptor;
    }

    @java.lang.Override
    protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
    internalGetFieldAccessorTable() {
      return common.entity.UserFromProto.internal_static_common_entity_User_fieldAccessorTable
              .ensureFieldAccessorsInitialized(
                      common.entity.UserFromProto.User.class, common.entity.UserFromProto.User.Builder.class);
    }

    public static final int USERNAME_FIELD_NUMBER = 1;
    private volatile java.lang.Object username_;
    /**
     * <code>string username = 1;</code>
     * @return The username.
     */
    @java.lang.Override
    public java.lang.String getUsername() {
      java.lang.Object ref = username_;
      if (ref instanceof java.lang.String) {
        return (java.lang.String) ref;
      } else {
        com.google.protobuf.ByteString bs =
                (com.google.protobuf.ByteString) ref;
        java.lang.String s = bs.toStringUtf8();
        username_ = s;
        return s;
      }
    }
    /**
     * <code>string username = 1;</code>
     * @return The bytes for username.
     */
    @java.lang.Override
    public com.google.protobuf.ByteString
    getUsernameBytes() {
      java.lang.Object ref = username_;
      if (ref instanceof java.lang.String) {
        com.google.protobuf.ByteString b =
                com.google.protobuf.ByteString.copyFromUtf8(
                        (java.lang.String) ref);
        username_ = b;
        return b;
      } else {
        return (com.google.protobuf.ByteString) ref;
      }
    }

    public static final int SEX_FIELD_NUMBER = 2;
    private volatile java.lang.Object sex_;
    /**
     * <code>string sex = 2;</code>
     * @return The sex.
     */
    @java.lang.Override
    public java.lang.String getSex() {
      java.lang.Object ref = sex_;
      if (ref instanceof java.lang.String) {
        return (java.lang.String) ref;
      } else {
        com.google.protobuf.ByteString bs =
                (com.google.protobuf.ByteString) ref;
        java.lang.String s = bs.toStringUtf8();
        sex_ = s;
        return s;
      }
    }
    /**
     * <code>string sex = 2;</code>
     * @return The bytes for sex.
     */
    @java.lang.Override
    public com.google.protobuf.ByteString
    getSexBytes() {
      java.lang.Object ref = sex_;
      if (ref instanceof java.lang.String) {
        com.google.protobuf.ByteString b =
                com.google.protobuf.ByteString.copyFromUtf8(
                        (java.lang.String) ref);
        sex_ = b;
        return b;
      } else {
        return (com.google.protobuf.ByteString) ref;
      }
    }

    public static final int AGE_FIELD_NUMBER = 3;
    private int age_;
    /**
     * <code>int32 age = 3;</code>
     * @return The age.
     */
    @java.lang.Override
    public int getAge() {
      return age_;
    }

    private byte memoizedIsInitialized = -1;
    @java.lang.Override
    public final boolean isInitialized() {
      byte isInitialized = memoizedIsInitialized;
      if (isInitialized == 1) return true;
      if (isInitialized == 0) return false;

      memoizedIsInitialized = 1;
      return true;
    }

    @java.lang.Override
    public void writeTo(com.google.protobuf.CodedOutputStream output)
            throws java.io.IOException {
      if (!getUsernameBytes().isEmpty()) {
        com.google.protobuf.GeneratedMessageV3.writeString(output, 1, username_);
      }
      if (!getSexBytes().isEmpty()) {
        com.google.protobuf.GeneratedMessageV3.writeString(output, 2, sex_);
      }
      if (age_ != 0) {
        output.writeInt32(3, age_);
      }
      unknownFields.writeTo(output);
    }

    @java.lang.Override
    public int getSerializedSize() {
      int size = memoizedSize;
      if (size != -1) return size;

      size = 0;
      if (!getUsernameBytes().isEmpty()) {
        size += com.google.protobuf.GeneratedMessageV3.computeStringSize(1, username_);
      }
      if (!getSexBytes().isEmpty()) {
        size += com.google.protobuf.GeneratedMessageV3.computeStringSize(2, sex_);
      }
      if (age_ != 0) {
        size += com.google.protobuf.CodedOutputStream
                .computeInt32Size(3, age_);
      }
      size += unknownFields.getSerializedSize();
      memoizedSize = size;
      return size;
    }

    @java.lang.Override
    public boolean equals(final java.lang.Object obj) {
      if (obj == this) {
        return true;
      }
      if (!(obj instanceof common.entity.UserFromProto.User)) {
        return super.equals(obj);
      }
      common.entity.UserFromProto.User other = (common.entity.UserFromProto.User) obj;

      if (!getUsername()
              .equals(other.getUsername())) return false;
      if (!getSex()
              .equals(other.getSex())) return false;
      if (getAge()
              != other.getAge()) return false;
      if (!unknownFields.equals(other.unknownFields)) return false;
      return true;
    }

    @java.lang.Override
    public int hashCode() {
      if (memoizedHashCode != 0) {
        return memoizedHashCode;
      }
      int hash = 41;
      hash = (19 * hash) + getDescriptor().hashCode();
      hash = (37 * hash) + USERNAME_FIELD_NUMBER;
      hash = (53 * hash) + getUsername().hashCode();
      hash = (37 * hash) + SEX_FIELD_NUMBER;
      hash = (53 * hash) + getSex().hashCode();
      hash = (37 * hash) + AGE_FIELD_NUMBER;
      hash = (53 * hash) + getAge();
      hash = (29 * hash) + unknownFields.hashCode();
      memoizedHashCode = hash;
      return hash;
    }

    public static common.entity.UserFromProto.User parseFrom(
            java.nio.ByteBuffer data)
            throws com.google.protobuf.InvalidProtocolBufferException {
      return PARSER.parseFrom(data);
    }
    public static common.entity.UserFromProto.User parseFrom(
            java.nio.ByteBuffer data,
            com.google.protobuf.ExtensionRegistryLite extensionRegistry)
            throws com.google.protobuf.InvalidProtocolBufferException {
      return PARSER.parseFrom(data, extensionRegistry);
    }
    public static common.entity.UserFromProto.User parseFrom(
            com.google.protobuf.ByteString data)
            throws com.google.protobuf.InvalidProtocolBufferException {
      return PARSER.parseFrom(data);
    }
    public static common.entity.UserFromProto.User parseFrom(
            com.google.protobuf.ByteString data,
            com.google.protobuf.ExtensionRegistryLite extensionRegistry)
            throws com.google.protobuf.InvalidProtocolBufferException {
      return PARSER.parseFrom(data, extensionRegistry);
    }
    public static common.entity.UserFromProto.User parseFrom(byte[] data)
            throws com.google.protobuf.InvalidProtocolBufferException {
      return PARSER.parseFrom(data);
    }
    public static common.entity.UserFromProto.User parseFrom(
            byte[] data,
            com.google.protobuf.ExtensionRegistryLite extensionRegistry)
            throws com.google.protobuf.InvalidProtocolBufferException {
      return PARSER.parseFrom(data, extensionRegistry);
    }
    public static common.entity.UserFromProto.User parseFrom(java.io.InputStream input)
            throws java.io.IOException {
      return com.google.protobuf.GeneratedMessageV3
              .parseWithIOException(PARSER, input);
    }
    public static common.entity.UserFromProto.User parseFrom(
            java.io.InputStream input,
            com.google.protobuf.ExtensionRegistryLite extensionRegistry)
            throws java.io.IOException {
      return com.google.protobuf.GeneratedMessageV3
              .parseWithIOException(PARSER, input, extensionRegistry);
    }
    public static common.entity.UserFromProto.User parseDelimitedFrom(java.io.InputStream input)
            throws java.io.IOException {
      return com.google.protobuf.GeneratedMessageV3
              .parseDelimitedWithIOException(PARSER, input);
    }
    public static common.entity.UserFromProto.User parseDelimitedFrom(
            java.io.InputStream input,
            com.google.protobuf.ExtensionRegistryLite extensionRegistry)
            throws java.io.IOException {
      return com.google.protobuf.GeneratedMessageV3
              .parseDelimitedWithIOException(PARSER, input, extensionRegistry);
    }
    public static common.entity.UserFromProto.User parseFrom(
            com.google.protobuf.CodedInputStream input)
            throws java.io.IOException {
      return com.google.protobuf.GeneratedMessageV3
              .parseWithIOException(PARSER, input);
    }
    public static common.entity.UserFromProto.User parseFrom(
            com.google.protobuf.CodedInputStream input,
            com.google.protobuf.ExtensionRegistryLite extensionRegistry)
            throws java.io.IOException {
      return com.google.protobuf.GeneratedMessageV3
              .parseWithIOException(PARSER, input, extensionRegistry);
    }

    @java.lang.Override
    public Builder newBuilderForType() { return newBuilder(); }
    public static Builder newBuilder() {
      return DEFAULT_INSTANCE.toBuilder();
    }
    public static Builder newBuilder(common.entity.UserFromProto.User prototype) {
      return DEFAULT_INSTANCE.toBuilder().mergeFrom(prototype);
    }
    @java.lang.Override
    public Builder toBuilder() {
      return this == DEFAULT_INSTANCE
              ? new Builder() : new Builder().mergeFrom(this);
    }

    @java.lang.Override
    protected Builder newBuilderForType(
            com.google.protobuf.GeneratedMessageV3.BuilderParent parent) {
      Builder builder = new Builder(parent);
      return builder;
    }
    /**
     * Protobuf type {@code common.entity.User}
     */
    public static final class Builder extends
            com.google.protobuf.GeneratedMessageV3.Builder<Builder> implements
            // @@protoc_insertion_point(builder_implements:common.entity.User)
            common.entity.UserFromProto.UserOrBuilder {
      public static final com.google.protobuf.Descriptors.Descriptor
      getDescriptor() {
        return common.entity.UserFromProto.internal_static_common_entity_User_descriptor;
      }

      @java.lang.Override
      protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
      internalGetFieldAccessorTable() {
        return common.entity.UserFromProto.internal_static_common_entity_User_fieldAccessorTable
                .ensureFieldAccessorsInitialized(
                        common.entity.UserFromProto.User.class, common.entity.UserFromProto.User.Builder.class);
      }

      // Construct using common.entity.UserFromProto.User.newBuilder()
      private Builder() {
        maybeForceBuilderInitialization();
      }

      private Builder(
              com.google.protobuf.GeneratedMessageV3.BuilderParent parent) {
        super(parent);
        maybeForceBuilderInitialization();
      }
      private void maybeForceBuilderInitialization() {
        if (com.google.protobuf.GeneratedMessageV3
                .alwaysUseFieldBuilders) {
        }
      }
      @java.lang.Override
      public Builder clear() {
        super.clear();
        username_ = "";

        sex_ = "";

        age_ = 0;

        return this;
      }

      @java.lang.Override
      public com.google.protobuf.Descriptors.Descriptor
      getDescriptorForType() {
        return common.entity.UserFromProto.internal_static_common_entity_User_descriptor;
      }

      @java.lang.Override
      public common.entity.UserFromProto.User getDefaultInstanceForType() {
        return common.entity.UserFromProto.User.getDefaultInstance();
      }

      @java.lang.Override
      public common.entity.UserFromProto.User build() {
        common.entity.UserFromProto.User result = buildPartial();
        if (!result.isInitialized()) {
          throw newUninitializedMessageException(result);
        }
        return result;
      }

      @java.lang.Override
      public common.entity.UserFromProto.User buildPartial() {
        common.entity.UserFromProto.User result = new common.entity.UserFromProto.User(this);
        result.username_ = username_;
        result.sex_ = sex_;
        result.age_ = age_;
        onBuilt();
        return result;
      }

      @java.lang.Override
      public Builder clone() {
        return super.clone();
      }
      @java.lang.Override
      public Builder setField(
              com.google.protobuf.Descriptors.FieldDescriptor field,
              java.lang.Object value) {
        return super.setField(field, value);
      }
      @java.lang.Override
      public Builder clearField(
              com.google.protobuf.Descriptors.FieldDescriptor field) {
        return super.clearField(field);
      }
      @java.lang.Override
      public Builder clearOneof(
              com.google.protobuf.Descriptors.OneofDescriptor oneof) {
        return super.clearOneof(oneof);
      }
      @java.lang.Override
      public Builder setRepeatedField(
              com.google.protobuf.Descriptors.FieldDescriptor field,
              int index, java.lang.Object value) {
        return super.setRepeatedField(field, index, value);
      }
      @java.lang.Override
      public Builder addRepeatedField(
              com.google.protobuf.Descriptors.FieldDescriptor field,
              java.lang.Object value) {
        return super.addRepeatedField(field, value);
      }
      @java.lang.Override
      public Builder mergeFrom(com.google.protobuf.Message other) {
        if (other instanceof common.entity.UserFromProto.User) {
          return mergeFrom((common.entity.UserFromProto.User)other);
        } else {
          super.mergeFrom(other);
          return this;
        }
      }

      public Builder mergeFrom(common.entity.UserFromProto.User other) {
        if (other == common.entity.UserFromProto.User.getDefaultInstance()) return this;
        if (!other.getUsername().isEmpty()) {
          username_ = other.username_;
          onChanged();
        }
        if (!other.getSex().isEmpty()) {
          sex_ = other.sex_;
          onChanged();
        }
        if (other.getAge() != 0) {
          setAge(other.getAge());
        }
        this.mergeUnknownFields(other.unknownFields);
        onChanged();
        return this;
      }

      @java.lang.Override
      public final boolean isInitialized() {
        return true;
      }

      @java.lang.Override
      public Builder mergeFrom(
              com.google.protobuf.CodedInputStream input,
              com.google.protobuf.ExtensionRegistryLite extensionRegistry)
              throws java.io.IOException {
        common.entity.UserFromProto.User parsedMessage = null;
        try {
          parsedMessage = PARSER.parsePartialFrom(input, extensionRegistry);
        } catch (com.google.protobuf.InvalidProtocolBufferException e) {
          parsedMessage = (common.entity.UserFromProto.User) e.getUnfinishedMessage();
          throw e.unwrapIOException();
        } finally {
          if (parsedMessage != null) {
            mergeFrom(parsedMessage);
          }
        }
        return this;
      }

      private java.lang.Object username_ = "";
      /**
       * <code>string username = 1;</code>
       * @return The username.
       */
      public java.lang.String getUsername() {
        java.lang.Object ref = username_;
        if (!(ref instanceof java.lang.String)) {
          com.google.protobuf.ByteString bs =
                  (com.google.protobuf.ByteString) ref;
          java.lang.String s = bs.toStringUtf8();
          username_ = s;
          return s;
        } else {
          return (java.lang.String) ref;
        }
      }
      /**
       * <code>string username = 1;</code>
       * @return The bytes for username.
       */
      public com.google.protobuf.ByteString
      getUsernameBytes() {
        java.lang.Object ref = username_;
        if (ref instanceof String) {
          com.google.protobuf.ByteString b =
                  com.google.protobuf.ByteString.copyFromUtf8(
                          (java.lang.String) ref);
          username_ = b;
          return b;
        } else {
          return (com.google.protobuf.ByteString) ref;
        }
      }
      /**
       * <code>string username = 1;</code>
       * @param value The username to set.
       * @return This builder for chaining.
       */
      public Builder setUsername(
              java.lang.String value) {
        if (value == null) {
          throw new NullPointerException();
        }

        username_ = value;
        onChanged();
        return this;
      }
      /**
       * <code>string username = 1;</code>
       * @return This builder for chaining.
       */
      public Builder clearUsername() {

        username_ = getDefaultInstance().getUsername();
        onChanged();
        return this;
      }
      /**
       * <code>string username = 1;</code>
       * @param value The bytes for username to set.
       * @return This builder for chaining.
       */
      public Builder setUsernameBytes(
              com.google.protobuf.ByteString value) {
        if (value == null) {
          throw new NullPointerException();
        }
        checkByteStringIsUtf8(value);

        username_ = value;
        onChanged();
        return this;
      }

      private java.lang.Object sex_ = "";
      /**
       * <code>string sex = 2;</code>
       * @return The sex.
       */
      public java.lang.String getSex() {
        java.lang.Object ref = sex_;
        if (!(ref instanceof java.lang.String)) {
          com.google.protobuf.ByteString bs =
                  (com.google.protobuf.ByteString) ref;
          java.lang.String s = bs.toStringUtf8();
          sex_ = s;
          return s;
        } else {
          return (java.lang.String) ref;
        }
      }
      /**
       * <code>string sex = 2;</code>
       * @return The bytes for sex.
       */
      public com.google.protobuf.ByteString
      getSexBytes() {
        java.lang.Object ref = sex_;
        if (ref instanceof String) {
          com.google.protobuf.ByteString b =
                  com.google.protobuf.ByteString.copyFromUtf8(
                          (java.lang.String) ref);
          sex_ = b;
          return b;
        } else {
          return (com.google.protobuf.ByteString) ref;
        }
      }
      /**
       * <code>string sex = 2;</code>
       * @param value The sex to set.
       * @return This builder for chaining.
       */
      public Builder setSex(
              java.lang.String value) {
        if (value == null) {
          throw new NullPointerException();
        }

        sex_ = value;
        onChanged();
        return this;
      }
      /**
       * <code>string sex = 2;</code>
       * @return This builder for chaining.
       */
      public Builder clearSex() {

        sex_ = getDefaultInstance().getSex();
        onChanged();
        return this;
      }
      /**
       * <code>string sex = 2;</code>
       * @param value The bytes for sex to set.
       * @return This builder for chaining.
       */
      public Builder setSexBytes(
              com.google.protobuf.ByteString value) {
        if (value == null) {
          throw new NullPointerException();
        }
        checkByteStringIsUtf8(value);

        sex_ = value;
        onChanged();
        return this;
      }

      private int age_ ;
      /**
       * <code>int32 age = 3;</code>
       * @return The age.
       */
      @java.lang.Override
      public int getAge() {
        return age_;
      }
      /**
       * <code>int32 age = 3;</code>
       * @param value The age to set.
       * @return This builder for chaining.
       */
      public Builder setAge(int value) {

        age_ = value;
        onChanged();
        return this;
      }
      /**
       * <code>int32 age = 3;</code>
       * @return This builder for chaining.
       */
      public Builder clearAge() {

        age_ = 0;
        onChanged();
        return this;
      }
      @java.lang.Override
      public final Builder setUnknownFields(
              final com.google.protobuf.UnknownFieldSet unknownFields) {
        return super.setUnknownFields(unknownFields);
      }

      @java.lang.Override
      public final Builder mergeUnknownFields(
              final com.google.protobuf.UnknownFieldSet unknownFields) {
        return super.mergeUnknownFields(unknownFields);
      }


      // @@protoc_insertion_point(builder_scope:common.entity.User)
    }

    // @@protoc_insertion_point(class_scope:common.entity.User)
    private static final common.entity.UserFromProto.User DEFAULT_INSTANCE;
    static {
      DEFAULT_INSTANCE = new common.entity.UserFromProto.User();
    }

    public static common.entity.UserFromProto.User getDefaultInstance() {
      return DEFAULT_INSTANCE;
    }

    private static final com.google.protobuf.Parser<User>
            PARSER = new com.google.protobuf.AbstractParser<User>() {
      @java.lang.Override
      public User parsePartialFrom(
              com.google.protobuf.CodedInputStream input,
              com.google.protobuf.ExtensionRegistryLite extensionRegistry)
              throws com.google.protobuf.InvalidProtocolBufferException {
        return new User(input, extensionRegistry);
      }
    };

    public static com.google.protobuf.Parser<User> parser() {
      return PARSER;
    }

    @java.lang.Override
    public com.google.protobuf.Parser<User> getParserForType() {
      return PARSER;
    }

    @java.lang.Override
    public common.entity.UserFromProto.User getDefaultInstanceForType() {
      return DEFAULT_INSTANCE;
    }

  }

  private static final com.google.protobuf.Descriptors.Descriptor
          internal_static_common_entity_User_descriptor;
  private static final
  com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
          internal_static_common_entity_User_fieldAccessorTable;

  public static com.google.protobuf.Descriptors.FileDescriptor
  getDescriptor() {
    return descriptor;
  }
  private static  com.google.protobuf.Descriptors.FileDescriptor
          descriptor;
  static {
    java.lang.String[] descriptorData = {
            "\n\025user-from-proto.proto\022\rcommon.entity\"2" +
                    "\n\004User\022\020\n\010username\030\001 \001(\t\022\013\n\003sex\030\002 \001(\t\022\013\n" +
                    "\003age\030\003 \001(\005b\006proto3"
    };
    descriptor = com.google.protobuf.Descriptors.FileDescriptor
            .internalBuildGeneratedFileFrom(descriptorData,
                    new com.google.protobuf.Descriptors.FileDescriptor[] {
                    });
    internal_static_common_entity_User_descriptor =
            getDescriptor().getMessageTypes().get(0);
    internal_static_common_entity_User_fieldAccessorTable = new
            com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
            internal_static_common_entity_User_descriptor,
            new java.lang.String[] { "Username", "Sex", "Age", });
  }

  // @@protoc_insertion_point(outer_class_scope)
}