我一直在尝试将google.protobuf.Timestamp
的protobuf类型与protoc-jar-maven-plugin
一起使用,但只会遇到以下编译时错误:
google/protobuf/timestamp.proto: File not found.
test.proto: Import "google/protobuf/timestamp.proto" was not found or had errors.
test.proto:9:5: "google.protobuf.Timestamp" is not defined.
原始文件如下:
syntax = "proto3";
import "google/protobuf/timestamp.proto";
package test;
option java_package = "test";
message TestTimestamp {
google.protobuf.Timestamp liveStartDate = 1;
}
并且pom文件具有以下配置:
<build>
<plugins>
<plugin>
<groupId>com.github.os72</groupId>
<artifactId>protoc-jar-maven-plugin</artifactId>
<version>3.6.0.1</version>
<executions>
<execution>
<id>protoc.main</id>
<phase>generate-sources</phase>
<goals>
<goal>run</goal>
</goals>
<configuration>
<protocVersion>3.6.0</protocVersion>
<addSources>main</addSources>
<includeDirectories>
<include>src/main/protobuf</include>
</includeDirectories>
<inputDirectories>
<include>src/main/protobuf</include>
</inputDirectories>
</configuration>
</execution>
</executions>
</plugin>
</plugins>
</build>
据我了解,这种类型是proto3的一部分,那么为什么会出现这些错误?
答案 0 :(得分:2)
结果表明,由于此类型不是标准类型之一,因此Maven插件需要其他配置才能起作用,即<includeMavenTypes>direct</includeMavenTypes>
参数,如下所示:
<build>
<plugins>
<plugin>
<groupId>com.github.os72</groupId>
<artifactId>protoc-jar-maven-plugin</artifactId>
<version>3.6.0.1</version>
<executions>
<execution>
<id>protoc.main</id>
<phase>generate-sources</phase>
<goals>
<goal>run</goal>
</goals>
<configuration>
<protocVersion>3.6.0</protocVersion>
<addSources>main</addSources>
<includeMavenTypes>direct</includeMavenTypes>
<includeDirectories>
<include>src/main/protobuf</include>
</includeDirectories>
<inputDirectories>
<include>src/main/protobuf</include>
</inputDirectories>
</configuration>
</execution>
</executions>
</plugin>
</plugins>
</build>
使用此配置,将编译原始文件。