如何在java工程.proto文件中进行导入

Question

java项目的导入语句显示为红色，可选参数'(validator.field) = {string_not_empty: true，length_lt: 255};‘也显示为红色。使用Java8 + Gradle项目

import "github.com/mwitkow/go-proto-validators/validator.proto";

package proto;

/**
The CryptoService takes a number of byte arrays and encrypts / decrypts them using Parcel Encryption.

*/
service CryptoService {
  // Encrypts an array of byte arrays
  rpc Encrypt (EncryptRequest) returns (EncryptResponse) {}

  // Decrypts a ciphertext to an array of byte arrays
  rpc Decrypt (DecryptRequest) returns (DecryptResponse) {}
}

message EncryptRequest {
  string alias = 1 [(validator.field) = {string_not_empty: true, length_lt: 255}]; // The alias that represents the private key
  string derivation_path = 2; // The derivation path to use
  repeated bytes data = 3; // One or more arrays of byte arrays containing the data you wish to encrypt ([][]byte)
}

message EncryptResponse {
  bytes data = 1; // The resulting ciphertext
}

message DecryptRequest {
  string alias = 1; // The alias that represents the private key
  string derivation_path = 2; // The derivation path to use
  bytes data = 3; // The ciphertext to decrypt ([]byte)
}

message DecryptResponse {
  repeated bytes data = 1; // An array of one or more byte arrays ([][]byte)
}```

Answer 1

我为自己找到了一个解决方案，你可以先从网上下载protobuf文件(在这里是validator.proto)，然后保存到你的项目中去适应它！然后错误就消失了:-)