Question

我在Ubuntu上使用android studio并且一直在尝试设置Google App Engine后端。这是我的pom.xml文件，我试图使用所有依赖项和插件的最新版本。

<?xml version="1.0" encoding="UTF-8"?>
<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>
    <packaging>war</packaging>
    <version>1.0-SNAPSHOT</version>

    <groupId>com.watch.project</groupId>
    <artifactId>watch-AppEngine</artifactId>

    <properties>
        <appengine.target.version>1.8.9</appengine.target.version>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    </properties>

    <dependencies>
        <!-- Compile/runtime dependencies -->
        <dependency>
            <groupId>com.google.appengine</groupId>
            <artifactId>appengine-api-1.0-sdk</artifactId>
            <version>${appengine.target.version}</version>
        </dependency>
        <dependency>
            <groupId>com.google.appengine</groupId>
            <artifactId>appengine-endpoints</artifactId>
            <version>${appengine.target.version}</version>
        </dependency>
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>servlet-api</artifactId>
            <version>3.0-alpha-1</version>
            <scope>provided</scope>
        </dependency>
        <dependency>
            <groupId>org.apache.geronimo.specs</groupId>
            <artifactId>geronimo-jpa_2.0_spec</artifactId>
            <version>1.1</version>
        </dependency>
        <dependency>
            <groupId>net.sf.jsr107cache</groupId>
            <artifactId>jsr107cache</artifactId>
            <version>1.1</version>
        </dependency>
        <dependency>
            <groupId>org.datanucleus</groupId>
            <artifactId>datanucleus-core</artifactId>
            <version>3.2.11</version>
        </dependency>
        <dependency>
            <groupId>com.google.appengine.orm</groupId>
            <artifactId>datanucleus-appengine</artifactId>
            <version>2.1.2</version>
        </dependency>
        <dependency>
            <groupId>org.datanucleus</groupId>
            <artifactId>datanucleus-api-jpa</artifactId>
            <version>3.3.6</version>
        </dependency>

        <dependency>
            <groupId>com.googlecode.json-simple</groupId>
            <artifactId>json-simple</artifactId>
            <version>1.1.1</version>
            <scope>runtime</scope>
        </dependency>
        <dependency>
            <groupId>com.ganyo</groupId>
            <artifactId>gcm-server</artifactId>
            <version>1.0.2</version>
        </dependency>

        <!-- Test Dependencies -->
        <dependency>
            <groupId>com.google.appengine</groupId>
            <artifactId>appengine-testing</artifactId>
            <version>${appengine.target.version}</version>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>com.google.appengine</groupId>
            <artifactId>appengine-api-stubs</artifactId>
            <version>${appengine.target.version}</version>
            <scope>test</scope>
        </dependency>
    </dependencies>

    <build>
        <!-- for hot reload of the web application-->
        <outputDirectory>${project.build.directory}/${project.build.finalName}/WEB-INF/classes
        </outputDirectory>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <version>3.1</version>
                <artifactId>maven-compiler-plugin</artifactId>
                <configuration>
                    <source>1.8</source>
                    <target>1.8</target>
                </configuration>
            </plugin>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-war-plugin</artifactId>
                <version>2.4</version>
                <configuration>
                    <webXml>
                        ${project.build.directory}/generated-sources/appengine-endpoints/WEB-INF/web.xml
                    </webXml>
                    <webResources>
                        <resource>
                            <!-- this is relative to the pom.xml directory -->
                            <directory>
                                ${project.build.directory}/generated-sources/appengine-endpoints
                            </directory>
                            <!-- the list has a default value of ** -->
                            <includes>
                                <include>WEB-INF/*.discovery</include>
                                <include>WEB-INF/*.api</include>
                            </includes>
                        </resource>
                    </webResources>
                </configuration>
            </plugin>
            <plugin>
                <groupId>com.google.appengine</groupId>
                <artifactId>appengine-maven-plugin</artifactId>
                <version>1.8.9</version>
                <configuration>
                    <enableJarClasses>false</enableJarClasses>
                </configuration>
                <executions>
                    <execution>
                        <goals>
                            <goal>endpoints_get_discovery_doc</goal>
                            <!--goal>endpoints_get_client_lib</goal-->
                            <goal>enhance</goal>
                        </goals>
                    </execution>
                </executions>
            </plugin>
        </plugins>
    </build>
</project>

Java版本： dexter @ dexter-Lenovo-G505s：〜$ java -version java版“1.8.0-ea” Java（TM）SE运行时环境（版本1.8.0-ea-b108） Java HotSpot（TM）64位服务器VM（内置25.0-b50，混合模式）

Maven版本： Apache Maven 3.1.1（0728685237757ffbf44136acec0402957f723d9a; 2013-09-17 20：52：22 + 0530） Maven home：/home/dexter/Desktop/apache-maven-3.1.1 Java版本：1.8.0-ea，供应商：Oracle Corporation Java home：/usr/local/java/jdk1.8.0/jre 默认语言环境：en_IN，平台编码：UTF-8 操作系统名称：“linux”，版本：“3.8.13-992-generic”，arch：“amd64”，family：“unix”

当我尝试执行mvn编译时，出现以下错误：

[ERROR] -------------------- [ERROR]来自的标准错误 DataNucleus工具+ org.datanucleus.enhancer.DataNucleusEnhancer： [ERROR] -------------------- [ERROR]线程“main”中的异常 java.lang.IllegalArgumentException异常在org.datanucleus.asm.ClassReader。（ClassReader.java:185）在org.datanucleus.asm.ClassReader。（ClassReader.java:168）在org.datanucleus.asm.ClassReader。（ClassReader.java:439） at org.datanucleus.enhancer.jdo.JDOClassEnhancer.getClassNameForFileName（JDOClassEnhancer.java:172） at org.datanucleus.enhancer.DataNucleusEnhancer.getFileMetadataForInput（DataNucleusEnhancer.java:730）在org.datanucleus.enhancer.DataNucleusEnhancer.enhance（DataNucleusEnhancer.java:513）在org.datanucleus.enhancer.DataNucleusEnhancer.main（DataNucleusEnhancer.java:1281）

以下是错误的完整堆栈跟踪的链接： http://pastebin.com/bAeMZyeb

请帮我解决这个问题，谢谢你的耐心等待。

Answer 1

这已经解决了。

当构建过于最新并且源位置发生某些更改时，会出现此类问题。 10分钟后再次尝试为我解决了这个问题，使用最新的appengine.target.version构建成功。

在android studio上编译app引擎后端时出现Datanucleus错误

1 个答案: