Issue
I'm new to Linux and Protobuf.. I need help.
I'm trying to "mvn package" a project that contains many ".proto" files, and a pom.xml file of course...
I'm working on Ubuntu
=======================================
ERROR
When I run "mvn package", I receive this error:
after
...
Compiling 11 source files to .../target/classes
...
I get a bunch of these errors:
[ERROR] .../target/generated-sources/...java:[16457,30] cannot find symbol
[ERROR] symbol : class Parser
[ERROR] location: package com.google.protobuf
[ERROR]
[ERROR] .../target/generated-sources/...java:[17154,37] cannot find symbol
[ERROR] symbol : class Parser
[ERROR] location: package com.google.protobuf
[ERROR]
[ERROR] .../target/generated-sources/...java:[17165,30] cannot find symbol
[ERROR] symbol : class Parser
[ERROR] location: package com.google.protobuf
[ERROR]
[ERROR] .../target/generated-sources/...java:[17909,37] cannot find symbol
[ERROR] symbol : class Parser
[ERROR] location: package com.google.protobuf
[ERROR]
=======================================
POM
Here is the pom.xml file, with groupId & artifactId taken out:
<project>
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>*****</groupId>
<artifactId>*****</artifactId>
<version>1.0-SNAPSHOT</version>
</parent>
<artifactId>*****</artifactId>
<version>1.0-SNAPSHOT</version>
<properties>
<proto.cas.path>${project.basedir}/src</proto.cas.path>
<target.gen.source.path>${project.basedir}/target/generated-sources</target.gen.source.path>
</properties>
<dependencies>
<dependency>
<groupId>com.google.protobuf</groupId>
<artifactId>protobuf-java</artifactId>
<version>2.4.1</version>
<scope>compile</scope>
</dependency>
</dependencies>
<build>
<sourceDirectory>${project.basedir}/src</sourceDirectory>
<plugins>
<plugin>
<artifactId>maven-compiler-plugin</artifactId>
<version>2.0.2</version>
<configuration>
<source>1.6</source>
<target>1.6</target>
<includes><include>**/commonapps/**</include></includes>
</configuration>
</plugin>
<plugin>
<artifactId>maven-antrun-plugin</artifactId>
<executions>
<execution>
<id>generate-sources</id>
<phase>generate-sources</phase>
<configuration>
<tasks>
<mkdir dir="${target.gen.source.path}" />
<path id="proto.path.files">
<fileset dir="${proto.cas.path}">
<include name="*.proto" />
</fileset>
</path>
<pathconvert pathsep=" " property="proto.files" refid="proto.path.files" />
<exec executable="protoc">
<arg value="--java_out=${target.gen.source.path}" />
<arg value="--proto_path=${proto.cas.path}" />
<arg line="${proto.files}" />
</exec>
</tasks>
<sourceRoot>${target.gen.source.path}</sourceRoot>
</configuration>
<goals>
<goal>run</goal>
</goals>
</execution>
</executions>
</plugin>
</plugins>
</build>
</project>
=======================================
PROTOBUF INSTALLATION
I've done
./configure
make
make check
make install
in protobuf/,
and
mvn test
mvn install
mvn package
in protobuf/java.
I took the jar in protobuf/java/target
and added it to my maven repo by running:
mvn install:install-file -Dpackaging=jar -DgeneratePom=true -DgroupId=com.google.protobuf -DartifactId=protobuf-java -Dfile=protobuf-java-2.4.1.jar -Dversion=2.4.1
Note that I've messed around with $LD_LIBRARY_PATH. Currently when I run echo it, I get:
/usr/local/lib/:/usr/:/usr/lib/:/usr/local/
yeah.... as you can tell I don't have a clue about setting $LD_LIBRARY_PATH
I also ran:
apt-get install protobuf-compiler
=======================================
PROTOC INSTALLATION
I forgot what I did to make protoc work, but when I run
protoc --version
I get
libprotoc 2.5.0
=======================================
MY QUESTION IS SIMILAR TO:
Problems using protobufs with java and scala
=======================================
POSSIBLE RELEVANCE?
still not find package, after 'mvn install'
http://www.scriptol.com/programming/protocol-buffers-tutorial.php
Can anyone help?
=======================================
PROGRESS
Apparently it's a plugin failure:
https://cwiki.apache.org/confluence/display/MAVEN/MojoFailureException
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:2.0.2:compile (default-compile) on project casprotobuf: Compilation failure: Compilation failure:
Solution
I had the same problem. building the protobuf sources from google directly (I used 2.5.0) and doing
mvn install:install-file -Dpackaging=jar -DgeneratePom=true -DgroupId=com.google.protobuf -DartifactId=protobuf-java -Dfile=protobuf-java-2.5.0.jar -Dversion=2.5.0
fixed the problem for me.
In my earlier trials I noticed, that the jar-file in /root/.m2/repository/com/google/protobuf/protobuf-java/2.5.0/ was missing.
Maybe try to use version 2.5.0 in the pom.xml and/or copying the jarfile manually.
cheers
Answered By - thesonix
Answer Checked By - Mildred Charles (JavaFixing Admin)
