FileTransferServiceGrpc java实现demo
时间: 2023-08-02 19:12:17 浏览: 225
以下是一个简单的FileTransferServiceGrpc Java实现demo:
首先,我们需要定义一个proto文件,例如FileTransfer.proto,包含以下内容:
```proto
syntax = "proto3";
package filetransfer;
service FileTransferService {
rpc uploadFile(FileUploadRequest) returns (FileUploadResponse) {}
rpc downloadFile(FileDownloadRequest) returns (stream FileDownloadResponse) {}
rpc deleteFile(FileDeleteRequest) returns (FileDeleteResponse) {}
}
message FileUploadRequest {
string file_name = 1;
bytes file_content = 2;
}
message FileUploadResponse {
bool success = 1;
}
message FileDownloadRequest {
string file_name = 1;
}
message FileDownloadResponse {
bytes file_content = 1;
}
message FileDeleteRequest {
string file_name = 1;
}
message FileDeleteResponse {
bool success = 1;
}
```
接下来,在命令行中使用protoc编译工具生成Java代码:
```
$ protoc --java_out=. FileTransfer.proto
```
然后,我们可以在服务端代码中使用FileTransferServiceGrpc类来实现具体的文件传输服务。例如,以下是一个简单的服务端实现:
```java
public class FileTransferServer {
private static final int PORT = 50051;
public static void main(String[] args) throws Exception {
Server server = ServerBuilder.forPort(PORT).addService(new FileTransferServiceImpl()).build().start();
System.out.println("Server started, listening on " + PORT);
server.awaitTermination();
}
static class FileTransferServiceImpl extends FileTransferServiceGrpc.FileTransferServiceImplBase {
@Override
public void uploadFile(FileUploadRequest request, StreamObserver<FileUploadResponse> responseObserver) {
// 处理文件上传请求
// ...
FileUploadResponse response = FileUploadResponse.newBuilder().setSuccess(true).build();
responseObserver.onNext(response);
responseObserver.onCompleted();
}
@Override
public void downloadFile(FileDownloadRequest request, StreamObserver<FileDownloadResponse> responseObserver) {
// 处理文件下载请求
// ...
FileDownloadResponse response = FileDownloadResponse.newBuilder().setFileContent(ByteString.copyFrom(fileContent)).build();
responseObserver.onNext(response);
responseObserver.onCompleted();
}
@Override
public void deleteFile(FileDeleteRequest request, StreamObserver<FileDeleteResponse> responseObserver) {
// 处理文件删除请求
// ...
FileDeleteResponse response = FileDeleteResponse.newBuilder().setSuccess(true).build();
responseObserver.onNext(response);
responseObserver.onCompleted();
}
}
}
```
在以上实现中,我们创建了一个FileTransferServer类,并在main方法中启动了一个gRPC服务。在服务端实现中,我们继承了FileTransferServiceGrpc.FileTransferServiceImplBase类,并重写了三个文件传输服务接口方法,分别处理文件上传、下载和删除请求。在每个接口方法中,我们可以根据具体需求实现具体的文件传输逻辑,并通过responseObserver向客户端返回响应结果。
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