Unable to compile and create .avro file from .avsc using Maven

问题

I'm new to Maven and have been looking at tutorials and web for documentation on how to build a .avro from a schema file .avsc. Based on the documentation that on the apache.maven.org site. I have to add the following

<dependency>
  <groupId>org.apache.avro</groupId>
  <artifactId>avro</artifactId>
  <version>1.7.5</version>
</dependency>

<plugin>
  <groupId>org.apache.avro</groupId>
  <artifactId>avro-maven-plugin</artifactId>
  <version>1.7.5</version>
  <executions>
    <execution>
      <phase>generate-sources</phase>
      <goals>
        <goal>schema</goal>
      </goals>
      <configuration>
        <sourceDirectory>${project.basedir}/src/main/avro/</sourceDirectory>
        <outputDirectory>${project.basedir}/src/main/java/</outputDirectory>
      </configuration>
    </execution>
  </executions>
</plugin>
<plugin>
  <groupId>org.apache.maven.plugins</groupId>
  <artifactId>maven-compiler-plugin</artifactId>
  <configuration>
    <source>1.6</source>
    <target>1.6</target>
  </configuration>
</plugin>

I've added the same into my POM.xml file. I have 2 schema files (.avsc) and following is my directory structure with contents

ProjectDir
- src
  - main
    - java
    - avrò
      - abc.avsc
    - resources
- test
pom.xml

My POM.xml is

<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/xsd/maven-4.0.0.xsd">
  <modelVersion>4.0.0</modelVersion>

  <groupId>org.training</groupId>
  <artifactId>TestAvro</artifactId>
  <version>0.0.1-SNAPSHOT</version>
  <packaging>jar</packaging>

  <name>TestAvro</name>
  <url>http://maven.apache.org</url>

  <properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    <project.basedir>/Users/vsank2/TestAvro</project.basedir>
  </properties>

  <dependencies>
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>3.8.1</version>
      <scope>test</scope>
    </dependency>
    <dependency>
        <groupId>org.apache.avro</groupId>
        <artifactId>avro</artifactId>
        <version>1.7.5</version>
    </dependency>
    <dependency>
        <groupId>org.apache.avro</groupId>
        <artifactId>avro-maven-plugin</artifactId>
        <version>1.7.5</version>
    </dependency>
    <dependency>
        <groupId>org.apache.avro</groupId>
        <artifactId>avro-compiler</artifactId>  
        <version>1.7.5</version>
    </dependency>
  </dependencies>
  <build>
  <pluginManagement>
    <plugins>
        <plugin>
            <groupId>org.apache.avro</groupId>
            <artifactId>avro-maven-plugin</artifactId>
            <version>1.7.5</version>
            <executions>
                <execution>
                    <phase>generate-sources</phase>
                    <goals>
                        <goal>schema</goal>
                    </goals>
                    <configuration>
                        <sourceDirectory>${project.basedir}/src/main/avro/</sourceDirectory>
                        <outputDirectory>${project.basedir}/src/main/java/</outputDirectory>
                    </configuration>
                </execution>
            </executions>
        </plugin>
        <plugin>
            <groupId>org.apache.maven.plugin</groupId>
            <artifactId>maven-compiler-plugin</artifactId>
            <version>2.3.2</version>
            <configuration>
            <source>1.6</source>
            <target>1.6</target>
            </configuration>
        </plugin>
    </plugins>
  </pluginManagement>   
  </build>
 </project>

I executed the following

mvn clean generate-sources and I get the following output

INFO] Scanning for projects...
[INFO]                                                                         
[INFO] ------------------------------------------------------------------------
[INFO] Building TestAvro 0.0.1-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[INFO] 
[INFO] --- maven-clean-plugin:2.4.1:clean (default-clean) @ TestAvro ---
[INFO] Deleting /Users/vsank2/TestAvro/target
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 0.514s
[INFO] Finished at: Mon Dec 23 16:08:51 PST 2013
[INFO] Final Memory: 2M/81M
[INFO] ------------------------------------------------------------------------

Appreciate any help in this regard. thank you

回答1:

After a lot of research I found that the problem was completely with my .avsc JSON problem. The "namespace" was totally wrong. As soon as I fixed it. The maven avro plugin created the java class from the schema.

来源：https://stackoverflow.com/questions/20753109/unable-to-compile-and-create-avro-file-from-avsc-using-maven

标签

maven

avro