标题说明了一切;
“mvn compile”产生大量错误,这是第一个:
[ERROR] $ HOME / workspace / JavaExamplePBServiceCall / src / main / java / example / ServicecallPiqi.java:[13,23]错误:';'预期
手动编译产生100个错误,这是第一个:
javac -cp $ HOME / .m2 / repository / com / google / protobuf / protobuf-java / 2.4.1 / protobuf-java-2.4.1.jar ServicecallPiqi.java
ServicecallPiqi.java:535: error: cannot find symbol
public static com.google.protobuf.Parser<params> PARSER =
^
symbol: class Parser
location: package com.google.protobuf
ServicecallPiqi.java的开头:
package example;
// Generated by the protocol buffer compiler. DO NOT EDIT!
// source: pb_piqi_out/servicecall.piqi.proto
public final class ServicecallPiqi {
private ServicecallPiqi() {}
public static void registerAllExtensions(
com.google.protobuf.ExtensionRegistry registry) {
}
/**
* Protobuf enum {@code cast_type}
*/
public enum cast_type implements
// ^^^^^^^^^^^^^ OFFENDING line
这是我的pom.xml:
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>example</groupId>
<artifactId>JavaExamplePBServiceCall</artifactId>
<packaging>jar</packaging>
<version>1.0-SNAPSHOT</version>
<name>PBServiceCallExample</name>
<url>http://maven.apache.org</url>
<dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>3.8.1</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>com.google.protobuf</groupId>
<artifactId>protobuf-java</artifactId>
<version>2.4.1</version>
</dependency>
</dependencies>
</project>
如何编译?
答案 0 :(得分:5)
The Parser
classes have been added only after version 2.5.0,但你宣布对protobuf v2.4.1的依赖。
您可能正在使用更高版本的编译器编译.proto
文件,而不是您要添加到POM文件的运行时类。
更新你的依赖/降级你的protoc
编译器,一切都会正常工作。