下载
protobuf( protoc-3.10.1-win64.zip) 地址为 https://github.com/protocolbuffers/protobuf/releases 可以自己选择其他版本.解压
protoc-3.10.1-win64.zip到任意文件夹,然后添加到path中-
编写
.ptoto文件例如 :
addressbook.proto
// [START declaration]
syntax = "proto3";
package tutorial;
import "google/protobuf/timestamp.proto";
// [END declaration]
// [START java_declaration]
option java_package = "com.example.tutorial";
option java_outer_classname = "AddressBookProtos";
// [END java_declaration]
// [START csharp_declaration]
option csharp_namespace = "Google.Protobuf.Examples.AddressBook";
// [END csharp_declaration]
// [START messages]
message Person {
string name = 1;
int32 id = 2; // Unique ID number for this person.
string email = 3;
enum PhoneType {
MOBILE = 0;
HOME = 1;
WORK = 2;
}
message PhoneNumber {
string number = 1;
PhoneType type = 2;
}
repeated PhoneNumber phones = 4;
google.protobuf.Timestamp last_updated = 5;
}
// Our address book file is just one of these.
message AddressBook {
repeated Person people = 1;
}
// [END messages]
-
打开cmd,先运行
protoc --version查看是否安装好,然后再运行命令protoc -I=D:\demo\java --java_out=D:\demo\java D:\demo\proto\addressbook.proto --proto_path=D:\demo\proto上面的命令就是解析
D:\demo\proto\文件夹下的addressbook.proto文件,然后生成java文件放到D:\demo\java文件夹下对应的java_out参数.proto_path对应D:\demo\proto\addressbook.proto放着.proto文件的文件夹,也就是D:\demo\proto运行命令之后打开
D:\demo\java文件下就会发现添加了一个com文件夹,这个文件夹就对应上面addressbook.proto文件中的option java_package = "com.example.tutorial";,com.example.tutorial就是生成的包名.进入这个包就可以看到生成的AddressBookProtos.java文件了,这个文件名字对应addressbook.proto中的option java_outer_classname = "AddressBookProtos"值.
