无法使用Maven从.avsc编译和创建.avro文件 [英] Unable to compile and create .avro file from .avsc using Maven

问题描述

我是Maven的新手，一直在教程和Web上寻找有关如何从模式文件.avsc构建.avro的文档.基于apache.maven.org站点上的文档.我必须添加以下

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>

我已将其添加到我的POM.xml文件中.我有2个架构文件(.avsc)，以下是我的目录结构，其中包含内容

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
    • 主要
      • java
      • avrò
        • abc.avsc
        • ProjectDir
          • src
            • main
              • java
              • avrò
                • abc.avsc

                我的POM.xml是

                <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>
                

                我执行了以下

                mvn clean generate-sources，我得到以下输出

                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] ------------------------------------------------------------------------
                

                感谢这方面的帮助.谢谢

                Appreciate any help in this regard. thank you

                推荐答案

                经过大量研究，我发现问题完全出在我的.avsc JSON问题上. 命名空间"是完全错误的.我一修好就可以了. Maven Avro插件从该架构创建了Java类.

                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.

                这篇关于无法使用Maven从.avsc编译和创建.avro文件的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！