测试3.20.3的protoc编译后的proto2和proto3版本文件是否可以正常使用
背景
在工作中发现，有同学在使用protoc把proto文件转成java文件以后，有些字段前面会添加路径，在某个PR里面特意把前面的路径删除掉了，所以为了验证路径是否会对java文件的使用产生影响，写了个简单的demo进行验证。
代码
proto代码
// test2.proto
syntax = "proto2";
package example;
message Person {
required string name = 1;
optional int32 age = 2 [default = 18];
}
// test3.proto
syntax = "proto3";
package example;
message Person {
string name = 1;
int32 age = 2;
}
使用protoc进行转换：
protoc版本：3.20.3
转换代码：
protoc --java_out=./out test2.proto
protoc --java_out=./out test3.proto
转换结果：
// Generated by the protocol buffer compiler. DO NOT EDIT!
// source: test2.proto
package com.test.protobuf.out.example;
public final class Test2 {
private Test2() {}
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 PersonOrBuilder extends
// @@protoc_insertion_point(interface_extends:com.test.protobuf.out.example.Person)
com.google.protobuf.MessageOrBuilder {
/**
* <code>required string name = 1;</code>
* @return Whether the name field is set.
*/
boolean hasName();
/**
* <code>required string name = 1;</code>
* @return The name.
*/
java.lang.String getName();
/**
* <code>required string name = 1;</code>
* @return The bytes for name.
*/
com.google.protobuf.ByteString
getNameBytes();
/**
* <code>optional int32 age = 2 [default = 18];</code>
* @return Whether the age field is set.
*/
boolean hasAge();
/**
* <code>optional int32 age = 2 [default = 18];</code>
* @return The age.
*/
int getAge();
}
/**
* Protobuf type {@code com.test.protobuf.out.example.Person}
*/
public static final class Person extends
com.google.protobuf.GeneratedMessageV3 implements
// @@protoc_insertion_point(message_implements:com.test.protobuf.out.example.Person)
PersonOrBuilder {
private static final long serialVersionUID = 0L;
// Use Person.newBuilder() to construct.
private Person(com.google.protobuf.GeneratedMessageV3.Builder<?> builder) {
super(builder);
}
private Person() {
name_ = "";
age_ = 18;
}
@java.lang.Override
@SuppressWarnings({"unused"})
protected java.lang.Object newInstance(
UnusedPrivateParameter unused) {
return new Person();
}
@java.lang.Override
public final com.google.protobuf.UnknownFieldSet
getUnknownFields() {
return this.unknownFields;
}
public static final com.google.protobuf.Descriptors.Descriptor
getDescriptor() {
return com.test.protobuf.out.example.Test2.internal_static_example_Person_descriptor;
}
@java.lang.Override
protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
internalGetFieldAccessorTable() {
return com.test.protobuf.out.example.Test2.internal_static_example_Person_fieldAccessorTable
.ensureFieldAccessorsInitialized(
com.test.protobuf.out.example.Test2.Person.class, com.test.protobuf.out.example.Test2.Person.Builder.class);
}
private int bitField0_;
public static final int NAME_FIELD_NUMBER = 1;
private volatile java.lang.Object name_;
/**
* <code>required string name = 1;</code>
* @return Whether the name field is set.
*/
@java.lang.Override
public boolean hasName() {
return ((bitField0_ & 0x00000001) != 0);
}
/**
* <code>required string name = 1;</code>
* @return The name.
*/
@java.lang.Override
public java.lang.String getName() {
java.lang.Object ref = name_;
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();
if (bs.isValidUtf8()) {
name_ = s;
}
return s;
}
}
/**
* <code>required string name = 1;</code>
* @return The bytes for name.
*/
@java.lang.Override
public com.google.protobuf.ByteString
getNameBytes() {
java.lang.Object ref = name_;
if (ref instanceof java.lang.String) {
com.google.protobuf.ByteString b =
com.google.protobuf.ByteString.copyFromUtf8(
(java.lang.String) ref);
name_ = b;
return b;
} else {
return (com.google.protobuf.ByteString) ref;
}
}
public static final int AGE_FIELD_NUMBER = 2;
private int age_;
/**
* <code>optional int32 age = 2 [default = 18];</code>
* @return Whether the age field is set.
*/
@java.lang.Override
public boolean hasAge() {
return ((bitField0_ & 0x00000002) != 0);
}
/**
* <code>optional int32 age = 2 [default = 18];</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;
if (!hasName()) {
memoizedIsInitialized = 0;
return false;
}
memoizedIsInitialized = 1;
return true;
}
@java.lang.Override
public void writeTo(com.google.protobuf.CodedOutputStream output)
throws java.io.IOException {
if (((bitField0_ & 0x00000001) != 0)) {
com.google.protobuf.GeneratedMessageV3.writeString(output, 1, name_);
}
if (((bitField0_ & 0x00000002) != 0)) {
output.writeInt32(2, age_);
}
getUnknownFields().writeTo(output);
}
@java.lang.Override
public int getSerializedSize() {
int size = memoizedSize;
if (size != -1) return size;
size = 0;
if (((bitField0_ & 0x00000001) != 0)) {
size += com.google.protobuf.GeneratedMessageV3.computeStringSize(1, name_);
}
if (((bitField0_ & 0x00000002) != 0)) {
size += com.google.protobuf.CodedOutputStream
.computeInt32Size(2, age_);
}
size += getUnknownFields().getSerializedSize();
memoizedSize = size;
return size;
}
@java.lang.Override
public boolean equals(final java.lang.Object obj) {
if (obj == this) {
return true;
}
if (!(obj instanceof com.test.protobuf.out.example.Test2.Person)) {
return super.equals(obj);
}
com.test.protobuf.out.example.Test2.Person other = (com.test.protobuf.out.example.Test2.Person) obj;
if (hasName() != other.hasName()) return false;
if (hasName()) {
if (!getName()
.equals(other.getName())) return false;
}
if (hasAge() != other.hasAge()) return false;
if (hasAge()) {
if (getAge()
!= other.getAge()) return false;
}
if (!getUnknownFields().equals(other.getUnknownFields())) return false;
return true;
}
@java.lang.Override
public int hashCode() {
if (memoizedHashCode != 0) {
return memoizedHashCode;
}
int hash = 41;
hash = (19 * hash) + getDescriptor().hashCode();
if (hasName()) {
hash = (37 * hash) + NAME_FIELD_NUMBER;
hash = (53 * hash) + getName().hashCode();
}
if (hasAge()) {
hash = (37 * hash) + AGE_FIELD_NUMBER;
hash = (53 * hash) + getAge();
}
hash = (29 * hash) + getUnknownFields().hashCode();
memoizedHashCode = hash;
return hash;
}
public static com.test.protobuf.out.example.Test2.Person parseFrom(
java.nio.ByteBuffer data)
throws com.google.protobuf.InvalidProtocolBufferException {
return PARSER.parseFrom(data);
}
public static com.test.protobuf.out.example.Test2.Person parseFrom(
java.nio.ByteBuffer data,
com.google.protobuf.ExtensionRegistryLite extensionRegistry)
throws com.google.protobuf.InvalidProtocolBufferException {
return PARSER.parseFrom(data, extensionRegistry);
}
public static com.test.protobuf.out.example.Test2.Person parseFrom(
com.google.protobuf.ByteString data)
throws com.google.protobuf.InvalidProtocolBufferException {
return PARSER.parseFrom(data);
}
public static com.test.protobuf.out.example.Test2.Person parseFrom(
com.google.protobuf.ByteString data,
com.google.protobuf.ExtensionRegistryLite extensionRegistry)
throws com.google.protobuf.InvalidProtocolBufferException {
return PARSER.parseFrom(data, extensionRegistry);
}
public static com.test.protobuf.out.example.Test2.Person parseFrom(byte[] data)
throws com.google.protobuf.InvalidProtocolBufferException {
return PARSER.parseFrom(data);
}
public static com.test.protobuf.out.example.Test2.Person parseFrom(
byte[] data,
com.google.protobuf.ExtensionRegistryLite extensionRegistry)
throws com.google.protobuf.InvalidProtocolBufferException {
return PARSER.parseFrom(data, extensionRegistry);
}
public static com.test.protobuf.out.example.Test2.Person parseFrom(java.io.InputStream input)
throws java.io.IOException {
return com.google.protobuf.GeneratedMessageV3
.parseWithIOException(PARSER, input);
}
public static com.test.protobuf.out.example.Test2.Person 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 com.test.protobuf.out.example.Test2.Person parseDelimitedFrom(java.io.InputStream input)
throws java.io.IOException {
return com.google.protobuf.GeneratedMessageV3
.parseDelimitedWithIOException(PARSER, input);
}
public static com.test.protobuf.out.example.Test2.Person 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 com.test.protobuf.out.example.Test2.Person parseFrom(
com.google.protobuf.CodedInputStream input)
throws java.io.IOException {
return com.google.protobuf.GeneratedMessageV3
.parseWithIOException(PARSER, input);
}
public static com.test.protobuf.out.example.Test2.Person 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(com.test.protobuf.out.example.Test2.Person 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 com.test.protobuf.out.example.Person}
*/
public static final class Builder extends
com.google.protobuf.GeneratedMessageV3.Builder<Builder> implements
// @@protoc_insertion_point(builder_implements:com.test.protobuf.out.example.Person)
com.test.protobuf.out.example.Test2.PersonOrBuilder {
public static final com.google.protobuf.Descriptors.Descriptor
getDescriptor() {
return com.test.protobuf.out.example.Test2.internal_static_example_Person_descriptor;
}
@java.lang.Override
protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
internalGetFieldAccessorTable() {
return com.test.protobuf.out.example.Test2.internal_static_example_Person_fieldAccessorTable
.ensureFieldAccessorsInitialized(
com.test.protobuf.out.example.Test2.Person.class, com.test.protobuf.out.example.Test2.Person.Builder.class);
}
// Construct using com.test.protobuf.out.example.Test2.Person.newBuilder()
private Builder() {
}
private Builder(
com.google.protobuf.GeneratedMessageV3.BuilderParent parent) {
super(parent);
}
@java.lang.Override
public Builder clear() {
super.clear();
name_ = "";
bitField0_ = (bitField0_ & ~0x00000001);
age_ = 18;
bitField0_ = (bitField0_ & ~0x00000002);
return this;
}
@java.lang.Override
public com.google.protobuf.Descriptors.Descriptor
getDescriptorForType() {
return com.test.protobuf.out.example.Test2.internal_static_example_Person_descriptor;
}
@java.lang.Override
public com.test.protobuf.out.example.Test2.Person getDefaultInstanceForType() {
return com.test.protobuf.out.example.Test2.Person.getDefaultInstance();
}
@java.lang.Override
public com.test.protobuf.out.example.Test2.Person build() {
com.test.protobuf.out.example.Test2.Person result = buildPartial();
if (!result.isInitialized()) {
throw newUninitializedMessageException(result);
}
return result;
}
@java.lang.Override
public com.test.protobuf.out.example.Test2.Person buildPartial() {
com.test.protobuf.out.example.Test2.Person result = new com.test.protobuf.out.example.Test2.Person(this);
int from_bitField0_ = bitField0_;
int to_bitField0_ = 0;
if (((from_bitField0_ & 0x00000001) != 0)) {
to_bitField0_ |= 0x00000001;
}
result.name_ = name_;
if (((from_bitField0_ & 0x00000002) != 0)) {
to_bitField0_ |= 0x00000002;
}
result.age_ = age_;
result.bitField0_ = to_bitField0_;
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 com.test.protobuf.out.example.Test2.Person) {
return mergeFrom((com.test.protobuf.out.example.Test2.Person)other);
} else {
super.mergeFrom(other);
return this;
}
}
public Builder mergeFrom(com.test.protobuf.out.example.Test2.Person other) {
if (other == com.test.protobuf.out.example.Test2.Person.getDefaultInstance()) return this;
if (other.hasName()) {
bitField0_ |= 0x00000001;
name_ = other.name_;
onChanged();
}
if (other.hasAge()) {
setAge(other.getAge());
}
this.mergeUnknownFields(other.getUnknownFields());
onChanged();
return this;
}
@java.lang.Override
public final boolean isInitialized() {
if (!hasName()) {
return false;
}
return true;
}
@java.lang.Override
public Builder mergeFrom(
com.google.protobuf.CodedInputStream input,
com.google.protobuf.ExtensionRegistryLite extensionRegistry)
throws java.io.IOException {
if (extensionRegistry == null) {
throw new java.lang.NullPointerException();
}
try {
boolean done = false;
while (!done) {
int tag = input.readTag();
switch (tag) {
case 0:
done = true;
break;
case 10: {
name_ = input.readBytes();
bitField0_ |= 0x00000001;
break;
} // case 10
case 16: {
age_ = input.readInt32();
bitField0_ |= 0x00000002;
break;
} // case 16
default: {
if (!super.parseUnknownField(input, extensionRegistry, tag)) {
done = true; // was an endgroup tag
}
break;
} // default:
} // switch (tag)
} // while (!done)
} catch (com.google.protobuf.InvalidProtocolBufferException e) {
throw e.unwrapIOException();
} finally {
onChanged();
} // finally
return this;
}
private int bitField0_;
private java.lang.Object name_ = "";
/**
* <code>required string name = 1;</code>
* @return Whether the name field is set.
*/
public boolean hasName() {
return ((bitField0_ & 0x00000001) != 0);
}
/**
* <code>required string name = 1;</code>
* @return The name.
*/
public java.lang.String getName() {
java.lang.Object ref = name_;
if (!(ref instanceof java.lang.String)) {
com.google.protobuf.ByteString bs =
(com.google.protobuf.ByteString) ref;
java.lang.String s = bs.toStringUtf8();
if (bs.isValidUtf8()) {
name_ = s;
}
return s;
} else {
return (java.lang.String) ref;
}
}
/**
* <code>required string name = 1;</code>
* @return The bytes for name.
*/
public com.google.protobuf.ByteString
getNameBytes() {
java.lang.Object ref = name_;
if (ref instanceof String) {
com.google.protobuf.ByteString b =
com.google.protobuf.ByteString.copyFromUtf8(
(java.lang.String) ref);
name_ = b;
return b;
} else {
return (com.google.protobuf.ByteString) ref;
}
}
/**
* <code>required string name = 1;</code>
* @param value The name to set.
* @return This builder for chaining.
*/
public Builder setName(
java.lang.String value) {
if (value == null) {
throw new NullPointerException();
}
bitField0_ |= 0x00000001;
name_ = value;
onChanged();
return this;
}
/**
* <code>required string name = 1;</code>
* @return This builder for chaining.
*/
public Builder clearName() {
bitField0_ = (bitField0_ & ~0x00000001);
name_ = getDefaultInstance().getName();
onChanged();
return this;
}
/**
* <code>required string name = 1;</code>
* @param value The bytes for name to set.
* @return This builder for chaining.
*/
public Builder setNameBytes(
com.google.protobuf.ByteString value) {
if (value == null) {
throw new NullPointerException();
}
bitField0_ |= 0x00000001;
name_ = value;
onChanged();
return this;
}
private int age_ = 18;
/**
* <code>optional int32 age = 2 [default = 18];</code>
* @return Whether the age field is set.
*/
@java.lang.Override
public boolean hasAge() {
return ((bitField0_ & 0x00000002) != 0);
}
/**
* <code>optional int32 age = 2 [default = 18];</code>
* @return The age.
*/
@java.lang.Override
public int getAge() {
return age_;
}
/**
* <code>optional int32 age = 2 [default = 18];</code>
* @param value The age to set.
* @return This builder for chaining.
*/
public Builder setAge(int value) {
bitField0_ |= 0x00000002;
age_ = value;
onChanged();
return this;
}
/**
* <code>optional int32 age = 2 [default = 18];</code>
* @return This builder for chaining.
*/
public Builder clearAge() {
bitField0_ = (bitField0_ & ~0x00000002);
age_ = 18;
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:com.test.protobuf.out.example.Person)
}
// @@protoc_insertion_point(class_scope:com.test.protobuf.out.example.Person)
private static final com.test.protobuf.out.example.Test2.Person DEFAULT_INSTANCE;
static {
DEFAULT_INSTANCE = new com.test.protobuf.out.example.Test2.Person();
}
public static com.test.protobuf.out.example.Test2.Person getDefaultInstance() {
return DEFAULT_INSTANCE;
}
@java.lang.Deprecated public static final com.google.protobuf.Parser<Person>
PARSER = new com.google.protobuf.AbstractParser<Person>() {
@java.lang.Override
public Person parsePartialFrom(
com.google.protobuf.CodedInputStream input,
com.google.protobuf.ExtensionRegistryLite extensionRegistry)
throws com.google.protobuf.InvalidProtocolBufferException {
Builder builder = newBuilder();
try {
builder.mergeFrom(input, extensionRegistry);
} catch (com.google.protobuf.InvalidProtocolBufferException e) {
throw e.setUnfinishedMessage(builder.buildPartial());
} catch (com.google.protobuf.UninitializedMessageException e) {
throw e.asInvalidProtocolBufferException().setUnfinishedMessage(builder.buildPartial());
} catch (java.io.IOException e) {
throw new com.google.protobuf.InvalidProtocolBufferException(e)
.setUnfinishedMessage(builder.buildPartial());
}
return builder.buildPartial();
}
};
public static com.google.protobuf.Parser<Person> parser() {
return PARSER;
}
@java.lang.Override
public com.google.protobuf.Parser<Person> getParserForType() {
return PARSER;
}
@java.lang.Override
public com.test.protobuf.out.example.Test2.Person getDefaultInstanceForType() {
return DEFAULT_INSTANCE;
}
}
private static final com.google.protobuf.Descriptors.Descriptor
internal_static_example_Person_descriptor;
private static final
com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
internal_static_example_Person_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\013test2.proto\022\007example\"\'\n\006Person\022\014\n\004name" +
"\030\001 \002(\t\022\017\n\003age\030\002 \001(\005:\00218"
};
descriptor = com.google.protobuf.Descriptors.FileDescriptor
.internalBuildGeneratedFileFrom(descriptorData,
new com.google.protobuf.Descriptors.FileDescriptor[] {
});
internal_static_example_Person_descriptor =
getDescriptor().getMessageTypes().get(0);
internal_static_example_Person_fieldAccessorTable = new
com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
internal_static_example_Person_descriptor,
new java.lang.String[] { "Name", "Age", });
}
// @@protoc_insertion_point(outer_class_scope)
}
测试java文件是否可以正常使用
public static void testResolve() throws InvalidProtocolBufferException {
byte[] protoBytes = new byte[] {
0x0A, 0x05, 0x41, 0x6C, 0x69, 0x63, 0x65, // name: "Alice"
0x10, 0x14 // age: 20
};
Test2.Person person = Test2.Person.parseFrom(protoBytes);
// 4. 验证
System.out.println(person.getName()); // Alice
System.out.println(person.getAge()); // 20
}
测试结果：
测试结论：变量前面的路径存在与否，都可以正常使用protoc转换后的java文件
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