ProtoC输出什么Java版本？ - 原始生成的Java输出不会编译

发布于 2025-02-10 10:58:02 字数 958 浏览 1 评论 0原文

我正在尝试使用Google定义为.proto文件的GTF https：// https://developers.google.com/static/transit/ gtfs-realtime/gtfs-realtime.proto

我下载此文件并使用Protoc（libprotoc 3.17.3）进行编译，该文件创建gftsrealtime.java文件。但是，当我尝试编译此内容时，我会遇到以下错误：

GtfsRealtime.java:2537: error: cannot find symbol
        UnusedPrivateParameter unused) {
        ^
...
GtfsRealtime.java:20170: error: method does not override or implement a method from a supertype
    @java.lang.Override
    ^

这是我（MacOS）机器上的Java -version：

> java --version
java 9.0.1
Java(TM) SE Runtime Environment (build 9.0.1+11)
Java HotSpot(TM) 64-Bit Server VM (build 9.0.1+11, mixed mode)

我觉得问题是Protoc正在生成Java源代码的不同版本与我正在运行的不同，但我无法弄清protoc生成的Java版本？

原文

I am trying to use the GTFS defined as a .proto file by Google here
https://developers.google.com/static/transit/gtfs-realtime/gtfs-realtime.proto

I download this file and compile it using protoc (libprotoc 3.17.3) which creates a GftsRealtime.java file. But when I try to compile this, I'm getting errors such as the following:

GtfsRealtime.java:2537: error: cannot find symbol
        UnusedPrivateParameter unused) {
        ^
...
GtfsRealtime.java:20170: error: method does not override or implement a method from a supertype
    @java.lang.Override
    ^

Here is the java --version on my (MacOS) machine:

> java --version
java 9.0.1
Java(TM) SE Runtime Environment (build 9.0.1+11)
Java HotSpot(TM) 64-Bit Server VM (build 9.0.1+11, mixed mode)

I feel like the the issue is that protoc is generating a different version of Java source code than I am running but I can't figure out what Java version is generated by protoc?

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