Java中使用ProtoBuf数据
前置要求Protobuf
安装protobuf环境
因为我是直接在我服务器上安装的，下面简单写写安装步骤。
OS: Centos7.6
[root@VM_0_15_centos tools]#cd /data/tools
[root@VM_0_15_centos tools]#wget https://github.com/google/protobuf/releases/download/v3.6.1/protobuf-all-3.6.1.tar.gz
[root@VM_0_15_centos tools]#tar -zxvf protobuf-all-3.6.1.tar.gz
[root@VM_0_15_centos tools]#cd protobuf-3.6.1
[root@VM_0_15_centos protobuf-3.6.1]#yum install gcc gcc-c++
[root@VM_0_15_centos protobuf-3.6.1]#yum -y install gcc automake autoconf libtool make
[root@VM_0_15_centos protobuf-3.6.1]#./autogen.sh
[root@VM_0_15_centos protobuf-3.6.1]#./configure
[root@VM_0_15_centos protobuf-3.6.1]#make
[root@VM_0_15_centos protobuf-3.6.1]#make install
首先写一个protobuf文件定义数据格式
syntax = "proto3";
package cnkj.site.data;
message ProtobufEntity {
/**Header 为必选字段
*/
map<string,string> headers = 10;
/***desc为预留字段
*/
reserved "desc" ;
/**
字节列表，预防传递非字符串类型数据
*/
bytes body = 2;
}
根据上面的protobuf文件生成一个java文件
java文件由pb自动生成，使用的时候直接拷贝到自己的项目里面即可
[root@VM_0_15_centos tools]# ./protobuf-3.6.1/src/protoc -I=./ --java_out=./ ./ProtobufOuter.proto
// Generated by the protocol buffer compiler. DO NOT EDIT!
// source: ProtobufOuter.proto
package cnkj.site.data;
public final class ProtobufOuter {
private ProtobufOuter() {}
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 ProtobufEntityOrBuilder extends
// @@protoc_insertion_point(interface_extends:cnkj.site.data.ProtobufEntity)
com.google.protobuf.MessageOrBuilder {
/**
* <code>map<string, string> headers = 10;</code>
*/
int getHeadersCount();
/**
* <code>map<string, string> headers = 10;</code>
*/
boolean containsHeaders(
java.lang.String key);
/**
* Use {@link #getHeadersMap()} instead.
*/
@java.lang.Deprecated
java.util.Map<java.lang.String, java.lang.String>
getHeaders();
/**
* <code>map<string, string> headers = 10;</code>
*/
java.util.Map<java.lang.String, java.lang.String>
getHeadersMap();
/**
* <code>map<string, string> headers = 10;</code>
*/
java.lang.String getHeadersOrDefault(
java.lang.String key,
java.lang.String defaultValue);
/**
* <code>map<string, string> headers = 10;</code>
*/
java.lang.String getHeadersOrThrow(
java.lang.String key);
/**
* <pre>
**
*字节列表，预防传递非字符串类型数据
* </pre>
*
* <code>bytes body = 2;</code>
*/
com.google.protobuf.ByteString getBody();
}
/**
* <pre>
**Header 为必选字段
* </pre>
*
* Protobuf type {@code cnkj.site.data.ProtobufEntity}
*/
public static final class ProtobufEntity extends
com.google.protobuf.GeneratedMessageV3 implements
// @@protoc_insertion_point(message_implements:cnkj.site.data.ProtobufEntity)
ProtobufEntityOrBuilder {
private static final long serialVersionUID = 0L;
// Use ProtobufEntity.newBuilder() to construct.
private ProtobufEntity(com.google.protobuf.GeneratedMessageV3.Builder<?> builder) {
super(builder);
}
private ProtobufEntity() {
body_ = com.google.protobuf.ByteString.EMPTY;
}
@java.lang.Override
public final com.google.protobuf.UnknownFieldSet
getUnknownFields() {
return this.unknownFields;
}
private ProtobufEntity(
com.google.protobuf.CodedInputStream input,
com.google.protobuf.ExtensionRegistryLite extensionRegistry)
throws com.google.protobuf.InvalidProtocolBufferException {
this();
if (extensionRegistry == null) {
throw new java.lang.NullPointerException();
}
int mutable_bitField0_ = 0;
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 18: {
body_ = input.readBytes();
break;
}
case 82: {
if (!((mutable_bitField0_ & 0x00000001) == 0x00000001)) {
headers_ = com.google.protobuf.MapField.newMapField(
HeadersDefaultEntryHolder.defaultEntry);
mutable_bitField0_ |= 0x00000001;
}
com.google.protobuf.MapEntry<java.lang.String, java.lang.String>
headers__ = input.readMessage(
HeadersDefaultEntryHolder.defaultEntry.getParserForType(), extensionRegistry);
headers_.getMutableMap().put(
headers__.getKey(), headers__.getValue());
break;
}
default: {
if (!parseUnknownFieldProto3(
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 cnkj.site.data.ProtobufOuter.internal_static_cnkj_site_data_ProtobufEntity_descriptor;
}
@SuppressWarnings({"rawtypes"})
@java.lang.Override
protected com.google.protobuf.MapField internalGetMapField(
int number) {
switch (number) {
case 10:
return internalGetHeaders();
default:
throw new RuntimeException(
"Invalid map field number: " + number);
}
}
@java.lang.Override
protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
internalGetFieldAccessorTable() {
return cnkj.site.data.ProtobufOuter.internal_static_cnkj_site_data_ProtobufEntity_fieldAccessorTable
.ensureFieldAccessorsInitialized(
cnkj.site.data.ProtobufOuter.ProtobufEntity.class, cnkj.site.data.ProtobufOuter.ProtobufEntity.Builder.class);
}
private int bitField0_;
public static final int HEADERS_FIELD_NUMBER = 10;
private static final class HeadersDefaultEntryHolder {
static final com.google.protobuf.MapEntry<
java.lang.String, java.lang.String> defaultEntry =
com.google.protobuf.MapEntry
.<java.lang.String, java.lang.String>newDefaultInstance(
cnkj.site.data.ProtobufOuter.internal_static_cnkj_site_data_ProtobufEntity_HeadersEntry_descriptor,
com.google.protobuf.WireFormat.FieldType.STRING,
"",
com.google.protobuf.WireFormat.FieldType.STRING,
"");
}
private com.google.protobuf.MapField<
java.lang.String, java.lang.String> headers_;
private com.google.protobuf.MapField<java.lang.String, java.lang.String>
internalGetHeaders() {
if (headers_ == null) {
return com.google.protobuf.MapField.emptyMapField(
HeadersDefaultEntryHolder.defaultEntry);
}
return headers_;
}
public int getHeadersCount() {
return internalGetHeaders().getMap().size();
}
/**
* <code>map<string, string> headers = 10;</code>
*/
public boolean containsHeaders(
java.lang.String key) {
if (key == null) { throw new java.lang.NullPointerException(); }
return internalGetHeaders().getMap().containsKey(key);
}
/**
* Use {@link #getHeadersMap()} instead.
*/
@java.lang.Deprecated
public java.util.Map<java.lang.String, java.lang.String> getHeaders() {
return getHeadersMap();
}
/**
* <code>map<string, string> headers = 10;</code>
*/
public java.util.Map<java.lang.String, java.lang.String> getHeadersMap() {
return internalGetHeaders().getMap();
}
/**
* <code>map<string, string> headers = 10;</code>
*/
public java.lang.String getHeadersOrDefault(
java.lang.String key,
java.lang.String defaultValue) {
if (key == null) { throw new java.lang.NullPointerException(); }
java.util.Map<java.lang.String, java.lang.String> map =
internalGetHeaders().getMap();
return map.containsKey(key) ? map.get(key) : defaultValue;
}
/**
* <code>map<string, string> headers = 10;</code>
*/
public java.lang.String getHeadersOrThrow(
java.lang.String key) {
if (key == null) { throw new java.lang.NullPointerException(); }
java.util.Map<java.lang.String, java.lang.String> map =
internalGetHeaders().getMap();
if (!map.containsKey(key)) {
throw new java.lang.IllegalArgumentException();
}
return map.get(key);
}
public static final int BODY_FIELD_NUMBER = 2;
private com.google.protobuf.ByteString body_;
/**
* <pre>
**
*字节列表，预防传递非字符串类型数据
* </pre>
*
* <code>bytes body = 2;</code>
*/
public com.google.protobuf.ByteString getBody() {
return body_;
}
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 (!body_.isEmpty()) {
output.writeBytes(2, body_);
}
com.google.protobuf.GeneratedMessageV3
.serializeStringMapTo(
output,
internalGetHeaders(),
HeadersDefaultEntryHolder.defaultEntry,
10);
unknownFields.writeTo(output);
}
@java.lang.Override
public int getSerializedSize() {
int size = memoizedSize;
if (size != -1) return size;
size = 0;
if (!body_.isEmpty()) {
size += com.google.protobuf.CodedOutputStream
.computeBytesSize(2, body_);
}
for (java.util.Map.Entry<java.lang.String, java.lang.String> entry
: internalGetHeaders().getMap().entrySet()) {
com.google.protobuf.MapEntry<java.lang.String, java.lang.String>
headers__ = HeadersDefaultEntryHolder.defaultEntry.newBuilderForType()
.setKey(entry.getKey())
.setValue(entry.getValue())
.build();
size += com.google.protobuf.CodedOutputStream
.computeMessageSize(10, headers__);
}
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 cnkj.site.data.ProtobufOuter.ProtobufEntity)) {
return super.equals(obj);
}
cnkj.site.data.ProtobufOuter.ProtobufEntity other = (cnkj.site.data.ProtobufOuter.ProtobufEntity) obj;
boolean result = true;
result = result && internalGetHeaders().equals(
other.internalGetHeaders());
result = result && getBody()
.equals(other.getBody());
result = result && unknownFields.equals(other.unknownFields);
return result;
}
@java.lang.Override
public int hashCode() {
if (memoizedHashCode != 0) {
return memoizedHashCode;
}
int hash = 41;
hash = (19 * hash) + getDescriptor().hashCode();
if (!internalGetHeaders().getMap().isEmpty()) {
hash = (37 * hash) + HEADERS_FIELD_NUMBER;
hash = (53 * hash) + internalGetHeaders().hashCode();
}
hash = (37 * hash) + BODY_FIELD_NUMBER;
hash = (53 * hash) + getBody().hashCode();
hash = (29 * hash) + unknownFields.hashCode();
memoizedHashCode = hash;
return hash;
}
public static cnkj.site.data.ProtobufOuter.ProtobufEntity parseFrom(
java.nio.ByteBuffer data)
throws com.google.protobuf.InvalidProtocolBufferException {
return PARSER.parseFrom(data);
}
public static cnkj.site.data.ProtobufOuter.ProtobufEntity parseFrom(
java.nio.ByteBuffer data,
com.google.protobuf.ExtensionRegistryLite extensionRegistry)
throws com.google.protobuf.InvalidProtocolBufferException {
return PARSER.parseFrom(data, extensionRegistry);
}
public static cnkj.site.data.ProtobufOuter.ProtobufEntity parseFrom(
com.google.protobuf.ByteString data)
throws com.google.protobuf.InvalidProtocolBufferException {
return PARSER.parseFrom(data);
}
public static cnkj.site.data.ProtobufOuter.ProtobufEntity parseFrom(
com.google.protobuf.ByteString data,
com.google.protobuf.ExtensionRegistryLite extensionRegistry)
throws com.google.protobuf.InvalidProtocolBufferException {
return PARSER.parseFrom(data, extensionRegistry);
}
public static cnkj.site.data.ProtobufOuter.ProtobufEntity parseFrom(byte[] data)
throws com.google.protobuf.InvalidProtocolBufferException {
return PARSER.parseFrom(data);
}
public static cnkj.site.data.ProtobufOuter.ProtobufEntity parseFrom(
byte[] data,
com.google.protobuf.ExtensionRegistryLite extensionRegistry)
throws com.google.protobuf.InvalidProtocolBufferException {
return PARSER.parseFrom(data, extensionRegistry);
}
public static cnkj.site.data.ProtobufOuter.ProtobufEntity parseFrom(java.io.InputStream input)
throws java.io.IOException {
return com.google.protobuf.GeneratedMessageV3
.parseWithIOException(PARSER, input);
}
public static cnkj.site.data.ProtobufOuter.ProtobufEntity 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 cnkj.site.data.ProtobufOuter.ProtobufEntity parseDelimitedFrom(java.io.InputStream input)
throws java.io.IOException {
return com.google.protobuf.GeneratedMessageV3
.parseDelimitedWithIOException(PARSER, input);
}
public static cnkj.site.data.ProtobufOuter.ProtobufEntity 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 cnkj.site.data.ProtobufOuter.ProtobufEntity parseFrom(
com.google.protobuf.CodedInputStream input)
throws java.io.IOException {
return com.google.protobuf.GeneratedMessageV3
.parseWithIOException(PARSER, input);
}
public static cnkj.site.data.ProtobufOuter.ProtobufEntity 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(cnkj.site.data.ProtobufOuter.ProtobufEntity 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;
}
/**
* <pre>
**Header 为必选字段
* </pre>
*
* Protobuf type {@code cnkj.site.data.ProtobufEntity}
*/
public static final class Builder extends
com.google.protobuf.GeneratedMessageV3.Builder<Builder> implements
// @@protoc_insertion_point(builder_implements:cnkj.site.data.ProtobufEntity)
cnkj.site.data.ProtobufOuter.ProtobufEntityOrBuilder {
public static final com.google.protobuf.Descriptors.Descriptor
getDescriptor() {
return cnkj.site.data.ProtobufOuter.internal_static_cnkj_site_data_ProtobufEntity_descriptor;
}
@SuppressWarnings({"rawtypes"})
protected com.google.protobuf.MapField internalGetMapField(
int number) {
switch (number) {
case 10:
return internalGetHeaders();
default:
throw new RuntimeException(
"Invalid map field number: " + number);
}
}
@SuppressWarnings({"rawtypes"})
protected com.google.protobuf.MapField internalGetMutableMapField(
int number) {
switch (number) {
case 10:
return internalGetMutableHeaders();
default:
throw new RuntimeException(
"Invalid map field number: " + number);
}
}
@java.lang.Override
protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
internalGetFieldAccessorTable() {
return cnkj.site.data.ProtobufOuter.internal_static_cnkj_site_data_ProtobufEntity_fieldAccessorTable
.ensureFieldAccessorsInitialized(
cnkj.site.data.ProtobufOuter.ProtobufEntity.class, cnkj.site.data.ProtobufOuter.ProtobufEntity.Builder.class);
}
// Construct using cnkj.site.data.ProtobufOuter.ProtobufEntity.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();
internalGetMutableHeaders().clear();
body_ = com.google.protobuf.ByteString.EMPTY;
return this;
}
@java.lang.Override
public com.google.protobuf.Descriptors.Descriptor
getDescriptorForType() {
return cnkj.site.data.ProtobufOuter.internal_static_cnkj_site_data_ProtobufEntity_descriptor;
}
@java.lang.Override
public cnkj.site.data.ProtobufOuter.ProtobufEntity getDefaultInstanceForType() {
return cnkj.site.data.ProtobufOuter.ProtobufEntity.getDefaultInstance();
}
@java.lang.Override
public cnkj.site.data.ProtobufOuter.ProtobufEntity build() {
cnkj.site.data.ProtobufOuter.ProtobufEntity result = buildPartial();
if (!result.isInitialized()) {
throw newUninitializedMessageException(result);
}
return result;
}
@java.lang.Override
public cnkj.site.data.ProtobufOuter.ProtobufEntity buildPartial() {
cnkj.site.data.ProtobufOuter.ProtobufEntity result = new cnkj.site.data.ProtobufOuter.ProtobufEntity(this);
int from_bitField0_ = bitField0_;
int to_bitField0_ = 0;
result.headers_ = internalGetHeaders();
result.headers_.makeImmutable();
result.body_ = body_;
result.bitField0_ = to_bitField0_;
onBuilt();
return result;
}
@java.lang.Override
public Builder clone() {
return (Builder) super.clone();
}
@java.lang.Override
public Builder setField(
com.google.protobuf.Descriptors.FieldDescriptor field,
java.lang.Object value) {
return (Builder) super.setField(field, value);
}
@java.lang.Override
public Builder clearField(
com.google.protobuf.Descriptors.FieldDescriptor field) {
return (Builder) super.clearField(field);
}
@java.lang.Override
public Builder clearOneof(
com.google.protobuf.Descriptors.OneofDescriptor oneof) {
return (Builder) super.clearOneof(oneof);
}
@java.lang.Override
public Builder setRepeatedField(
com.google.protobuf.Descriptors.FieldDescriptor field,
int index, java.lang.Object value) {
return (Builder) super.setRepeatedField(field, index, value);
}
@java.lang.Override
public Builder addRepeatedField(
com.google.protobuf.Descriptors.FieldDescriptor field,
java.lang.Object value) {
return (Builder) super.addRepeatedField(field, value);
}
@java.lang.Override
public Builder mergeFrom(com.google.protobuf.Message other) {
if (other instanceof cnkj.site.data.ProtobufOuter.ProtobufEntity) {
return mergeFrom((cnkj.site.data.ProtobufOuter.ProtobufEntity)other);
} else {
super.mergeFrom(other);
return this;
}
}
public Builder mergeFrom(cnkj.site.data.ProtobufOuter.ProtobufEntity other) {
if (other == cnkj.site.data.ProtobufOuter.ProtobufEntity.getDefaultInstance()) return this;
internalGetMutableHeaders().mergeFrom(
other.internalGetHeaders());
if (other.getBody() != com.google.protobuf.ByteString.EMPTY) {
setBody(other.getBody());
}
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 {
cnkj.site.data.ProtobufOuter.ProtobufEntity parsedMessage = null;
try {
parsedMessage = PARSER.parsePartialFrom(input, extensionRegistry);
} catch (com.google.protobuf.InvalidProtocolBufferException e) {
parsedMessage = (cnkj.site.data.ProtobufOuter.ProtobufEntity) e.getUnfinishedMessage();
throw e.unwrapIOException();
} finally {
if (parsedMessage != null) {
mergeFrom(parsedMessage);
}
}
return this;
}
private int bitField0_;
private com.google.protobuf.MapField<
java.lang.String, java.lang.String> headers_;
private com.google.protobuf.MapField<java.lang.String, java.lang.String>
internalGetHeaders() {
if (headers_ == null) {
return com.google.protobuf.MapField.emptyMapField(
HeadersDefaultEntryHolder.defaultEntry);
}
return headers_;
}
private com.google.protobuf.MapField<java.lang.String, java.lang.String>
internalGetMutableHeaders() {
onChanged();;
if (headers_ == null) {
headers_ = com.google.protobuf.MapField.newMapField(
HeadersDefaultEntryHolder.defaultEntry);
}
if (!headers_.isMutable()) {
headers_ = headers_.copy();
}
return headers_;
}
public int getHeadersCount() {
return internalGetHeaders().getMap().size();
}
/**
* <code>map<string, string> headers = 10;</code>
*/
public boolean containsHeaders(
java.lang.String key) {
if (key == null) { throw new java.lang.NullPointerException(); }
return internalGetHeaders().getMap().containsKey(key);
}
/**
* Use {@link #getHeadersMap()} instead.
*/
@java.lang.Deprecated
public java.util.Map<java.lang.String, java.lang.String> getHeaders() {
return getHeadersMap();
}
/**
* <code>map<string, string> headers = 10;</code>
*/
public java.util.Map<java.lang.String, java.lang.String> getHeadersMap() {
return internalGetHeaders().getMap();
}
/**
* <code>map<string, string> headers = 10;</code>
*/
public java.lang.String getHeadersOrDefault(
java.lang.String key,
java.lang.String defaultValue) {
if (key == null) { throw new java.lang.NullPointerException(); }
java.util.Map<java.lang.String, java.lang.String> map =
internalGetHeaders().getMap();
return map.containsKey(key) ? map.get(key) : defaultValue;
}
/**
* <code>map<string, string> headers = 10;</code>
*/
public java.lang.String getHeadersOrThrow(
java.lang.String key) {
if (key == null) { throw new java.lang.NullPointerException(); }
java.util.Map<java.lang.String, java.lang.String> map =
internalGetHeaders().getMap();
if (!map.containsKey(key)) {
throw new java.lang.IllegalArgumentException();
}
return map.get(key);
}
public Builder clearHeaders() {
internalGetMutableHeaders().getMutableMap()
.clear();
return this;
}
/**
* <code>map<string, string> headers = 10;</code>
*/
public Builder removeHeaders(
java.lang.String key) {
if (key == null) { throw new java.lang.NullPointerException(); }
internalGetMutableHeaders().getMutableMap()
.remove(key);
return this;
}
/**
* Use alternate mutation accessors instead.
*/
@java.lang.Deprecated
public java.util.Map<java.lang.String, java.lang.String>
getMutableHeaders() {
return internalGetMutableHeaders().getMutableMap();
}
/**
* <code>map<string, string> headers = 10;</code>
*/
public Builder putHeaders(
java.lang.String key,
java.lang.String value) {
if (key == null) { throw new java.lang.NullPointerException(); }
if (value == null) { throw new java.lang.NullPointerException(); }
internalGetMutableHeaders().getMutableMap()
.put(key, value);
return this;
}
/**
* <code>map<string, string> headers = 10;</code>
*/
public Builder putAllHeaders(
java.util.Map<java.lang.String, java.lang.String> values) {
internalGetMutableHeaders().getMutableMap()
.putAll(values);
return this;
}
private com.google.protobuf.ByteString body_ = com.google.protobuf.ByteString.EMPTY;
/**
* <pre>
**
*字节列表，预防传递非字符串类型数据
* </pre>
*
* <code>bytes body = 2;</code>
*/
public com.google.protobuf.ByteString getBody() {
return body_;
}
/**
* <pre>
**
*字节列表，预防传递非字符串类型数据
* </pre>
*
* <code>bytes body = 2;</code>
*/
public Builder setBody(com.google.protobuf.ByteString value) {
if (value == null) {
throw new NullPointerException();
}
body_ = value;
onChanged();
return this;
}
/**
* <pre>
**
*字节列表，预防传递非字符串类型数据
* </pre>
*
* <code>bytes body = 2;</code>
*/
public Builder clearBody() {
body_ = getDefaultInstance().getBody();
onChanged();
return this;
}
@java.lang.Override
public final Builder setUnknownFields(
final com.google.protobuf.UnknownFieldSet unknownFields) {
return super.setUnknownFieldsProto3(unknownFields);
}
@java.lang.Override
public final Builder mergeUnknownFields(
final com.google.protobuf.UnknownFieldSet unknownFields) {
return super.mergeUnknownFields(unknownFields);
}
// @@protoc_insertion_point(builder_scope:cnkj.site.data.ProtobufEntity)
}
// @@protoc_insertion_point(class_scope:cnkj.site.data.ProtobufEntity)
private static final cnkj.site.data.ProtobufOuter.ProtobufEntity DEFAULT_INSTANCE;
static {
DEFAULT_INSTANCE = new cnkj.site.data.ProtobufOuter.ProtobufEntity();
}
public static cnkj.site.data.ProtobufOuter.ProtobufEntity getDefaultInstance() {
return DEFAULT_INSTANCE;
}
private static final com.google.protobuf.Parser<ProtobufEntity>
PARSER = new com.google.protobuf.AbstractParser<ProtobufEntity>() {
@java.lang.Override
public ProtobufEntity parsePartialFrom(
com.google.protobuf.CodedInputStream input,
com.google.protobuf.ExtensionRegistryLite extensionRegistry)
throws com.google.protobuf.InvalidProtocolBufferException {
return new ProtobufEntity(input, extensionRegistry);
}
};
public static com.google.protobuf.Parser<ProtobufEntity> parser() {
return PARSER;
}
@java.lang.Override
public com.google.protobuf.Parser<ProtobufEntity> getParserForType() {
return PARSER;
}
@java.lang.Override
public cnkj.site.data.ProtobufOuter.ProtobufEntity getDefaultInstanceForType() {
return DEFAULT_INSTANCE;
}
}
private static final com.google.protobuf.Descriptors.Descriptor
internal_static_cnkj_site_data_ProtobufEntity_descriptor;
private static final
com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
internal_static_cnkj_site_data_ProtobufEntity_fieldAccessorTable;
private static final com.google.protobuf.Descriptors.Descriptor
internal_static_cnkj_site_data_ProtobufEntity_HeadersEntry_descriptor;
private static final
com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
internal_static_cnkj_site_data_ProtobufEntity_HeadersEntry_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\nProtobufOuter.proto\022\016cnkj.site.data\"\222\001\n\016Protobu" +
"fEntity\022<\n\007headers\030\n \003(\0132+.cnkj.site.dat" +
"a.ProtobufEntity.HeadersEntry\022\014\n\004body\030\002 " +
"\001(\014\032.\n\014HeadersEntry\022\013\n\003key\030\001 \001(\t\022\r\n\005valu" +
"e\030\002 \001(\t:\0028\001R\004descb\006proto3"
};
com.google.protobuf.Descriptors.FileDescriptor.InternalDescriptorAssigner assigner =
new com.google.protobuf.Descriptors.FileDescriptor. InternalDescriptorAssigner() {
public com.google.protobuf.ExtensionRegistry assignDescriptors(
com.google.protobuf.Descriptors.FileDescriptor root) {
descriptor = root;
return null;
}
};
com.google.protobuf.Descriptors.FileDescriptor
.internalBuildGeneratedFileFrom(descriptorData,
new com.google.protobuf.Descriptors.FileDescriptor[] {
}, assigner);
internal_static_cnkj_site_data_ProtobufEntity_descriptor =
getDescriptor().getMessageTypes().get(0);
internal_static_cnkj_site_data_ProtobufEntity_fieldAccessorTable = new
com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
internal_static_cnkj_site_data_ProtobufEntity_descriptor,
new java.lang.String[] { "Headers", "Body", });
internal_static_cnkj_site_data_ProtobufEntity_HeadersEntry_descriptor =
internal_static_cnkj_site_data_ProtobufEntity_descriptor.getNestedTypes().get(0);
internal_static_cnkj_site_data_ProtobufEntity_HeadersEntry_fieldAccessorTable = new
com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
internal_static_cnkj_site_data_ProtobufEntity_HeadersEntry_descriptor,
new java.lang.String[] { "Key", "Value", });
}
// @@protoc_insertion_point(outer_class_scope)
}
Maven
<dependencies>
<dependency>
<groupId>com.google.protobuf</groupId>
<artifactId>protobuf-java</artifactId>
<version>3.6.1</version>
</dependency>
<dependency>
<groupId>com.googlecode.protobuf-java-format</groupId>
<artifactId>protobuf-java-format</artifactId>
<version>1.2</version>
</dependency>
</dependencies>
操作Protobuf数据
因为pb数据都是
unmodifiable不可变的,所以我们需要进行一定的转换才能修改原来的数据。
下面只对header部分进行操作
package cnkj.site.data;
import com.google.protobuf.ByteString;
import com.googlecode.protobuf.format.JsonFormat;
import java.util.HashMap;
import java.util.Map;
/*
* @author LXW
* @create 2019/12/27 11:04
* @Description
* 1. body 是.proto文件中设置的对象属性，因为设置的是字节格式，所以这里所有对body对象数据的操作都应当为字节格式
* 2. headers 是.proto文件中设置的对象属性，因为是map格式，所以这里面对headers对象的操作应当全部为map格式
* 3. 并且因为pb数据的特性，map对象是不可变的，因为当使用getMap.put()方法的时候会全部抛异常
*/
public class ProtobufOuterOperation {
/**
* 生成pb数据
* @param body 主题
* @param headers 头
* @return pb数据的字节数组
*/
private byte[] create(byte[] body, Map headers){
try {
ProtobufOuter.ProtobufEntity.Builder protobufEntity = ProtobufOuter.ProtobufEntity.newBuilder();
protobufEntity.setBody(ByteString.copyFrom(body));
protobufEntity.putAllHeaders(headers);
return protobufEntity.build().toByteArray();
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
/**
* 获取pb数据
* @param pb pb数据字节数组
* @return json字符串
*/
private String get(byte[] pb){
try {
ProtobufOuter.ProtobufEntity protobufEntity = ProtobufOuter.ProtobufEntity.parseFrom(pb);
//获取指定body内容
ByteString body = protobufEntity.getBody();
//获取指定headers内容
Map<String, String> headersMap = protobufEntity.getHeadersMap();
//字节转换pb数据对象为jsonString
String string = JsonFormat.printToString(protobufEntity);
return string;
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
/**
* 编辑headers，因为pb数据特性，获取到的map对象是不可变的，所以我们只能重新new一个对象然后把数据放进去
* - 当新的map对象的属性与原来的属性有重复，则会覆盖原来的数据
* - 否则效果等于新增
* - 新增body同理
* @param pb 获取到的pb数据
* @param headers 需要新增的headers对象
* @return 完成新增headers后的pb数据字节
*/
private byte[] editHeaders(byte[] pb, Map headers){
ProtobufOuter.ProtobufEntity.Builder builder = ProtobufOuter.ProtobufEntity.newBuilder();
try {
ProtobufOuter.ProtobufEntity protobufEntity = ProtobufOuter.ProtobufEntity.parseFrom(pb);
builder.setBody(protobufEntity.getBody());
Map map = new HashMap();
map.putAll(protobufEntity.getHeadersMap());
map.putAll(headers);
builder.putAllHeaders(map);
return builder.build().toByteArray();
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
}
License
本文由 新·都在 原创，采用 CC BY-NC-SA 4.0 许可协议，转载请注明出处。
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