java - Bazel 构建 Java 演示 : build ok but fail to run

Question

我是 bazel 的新手，有这个演示项目:

(1)mkdir 演示项目

(2)cd 演示项目

(3)mkdir -p src/main/java/com/demo

(4)vi src/main/java/com/demo/DemoRunner.java

package com.demo;
public class DemoRunner {
    public static void main(String args[]) {
        Hello.hello();
    }
}

(5)vi src/main/java/com/demo/Hello.java

package com.demo;

public class Hello {
    public static void hello() {
        System.out.println("hello,world");
    }
}

(6)vi ~/demo-project/BUILD

java_binary(
    name = "hello",
    srcs = glob(["**/*.java"]),
    main_class = "com.demo.DemoRunner",
)

(7) bazel 构建//:你好

Starting local Bazel server and connecting to it...
...........
Analyzing: target //:hello (2 packages loaded)
INFO: Analysed target //:hello (15 packages loaded).
INFO: Found 1 target...
Target //:hello up-to-date:
bazel-bin/hello.jar
bazel-bin/hello
INFO: Elapsed time: 60.505s, Critical Path: 1.24s
INFO: 1 process: 1 worker.
INFO: Build completed successfully, 6 total actions

一切似乎都很好，但是当我尝试时

java bazel-bin/hello # Cannot find or load main class bazel-bin.hello
java -jar bazel-bin/hello.jar # Cannot find main list property in bazel-bin/hello.jar

如上所述，两个命令都不成功。那么在 bazel 编译之后，如何运行 java 可执行文件？

Answer 1

Bazel 命令 run 可用于运行指定的目标(另请参阅 Bhavik 的评论):

bazel run //:hello