com.google.common.base.Preconditions.checkArgument(ZLjava / lang / String; CLjava / lang / Object;)V

时间:2019-06-22 01:09:00

标签: java guava payara google-cloud-automl google-natural-language

我使用的是Google BETA API:AutoML自然语言,经过对该API的培训后,我在Java SE项目中进行了测试,获得了令人满意的结果,但是,当我将其迁移到Java EE项目时,却遇到了其他问题。关于:

-Java -version:1.8.0_201
-Payara版本:5.191
-google-cloud-automl依赖度:0.97.0-beta

当我尝试运行实体提取服务(PredictionServiceClient类)时,它返回错误 java.lang.NoSuchMethodError:com.google.common.base.Preconditions.checkArgument(ZLjava / lang / String; CLjava / lang /对象;)V ,根据不同的来源,此错误是由不同版本的番石榴库之间的冲突引起的。我认为我的特定错误是由于番石榴在payara中的版本为19.0.0而google-cloud-automl需要版本> 20引起的。

为解决此错误,payara建议here修改文件glassfish-application.xml,“以此,EAR的lib /目录中包含的库将具有优先权”,但这对我不起作用。 / p>

该代码是在this文档的帮助下编写的

glassfish-application.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE glassfish-application PUBLIC "-//GlassFish.org//DTD GlassFish Application Server 3.1 Java EE Application 6.0//EN" "http://glassfish.org/dtds/glassfish-application_6_0-1.dtd">  
<glassfish-application>
    <classloading-delegate>false</classloading-delegate>    
</glassfish-application>

pom [EJB] .xml

<?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>
    <parent>
        <artifactId>AutoMLTest</artifactId>
        <groupId>co.com.group.automl</groupId>
        <version>1.0</version>
    </parent>

    <groupId>co.com.group.automl</groupId>
    <artifactId>AutoMLTest-ejb</artifactId>
    <version>1.0</version>
    <packaging>ejb</packaging>

    <name>AutoMLTest-ejb</name>

    <properties>
        <endorsed.dir>${project.build.directory}/endorsed</endorsed.dir>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    </properties>

   <dependencies>
      <dependency>
          <groupId>javax</groupId>
          <artifactId>javaee-api</artifactId>
          <version>7.0</version>
          <scope>provided</scope>
      </dependency>
      <dependency>
          <groupId>com.google.cloud</groupId>
          <artifactId>google-cloud-automl</artifactId>
          <version>0.97.0-beta</version>
      </dependency>     
   </dependencies>

   <build>
        <resources>
            <resource>
                <targetPath>META-INF</targetPath>
                <directory>src</directory>
                <includes>
                    <include>jax-ws-catalog.xml</include>
                    <include>wsdl/**</include>
                </includes>
            </resource>
            <resource>
                <directory>src/main/resources</directory>
            </resource>
        </resources>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>3.1</version>
                <configuration>
                    <source>1.8</source>
                    <target>1.8</target>
                    <compilerArguments>
                        <endorseddirs>${endorsed.dir}</endorseddirs>
                    </compilerArguments>
                </configuration>
            </plugin>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-ejb-plugin</artifactId>
                <version>2.3</version>
                <configuration>
                    <ejbVersion>3.1</ejbVersion>
                </configuration>
            </plugin>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-dependency-plugin</artifactId>
                <version>2.6</version>
                <executions>
                    <execution>
                        <phase>validate</phase>
                        <goals>
                            <goal>copy</goal>
                        </goals>
                        <configuration>
                            <outputDirectory>${endorsed.dir}</outputDirectory>
                            <silent>true</silent>
                            <artifactItems>
                                <artifactItem>
                                    <groupId>javax</groupId>
                                    <artifactId>javaee-endorsed-api</artifactId>
                                    <version>7.0</version>
                                    <type>jar</type>
                                </artifactItem>
                            </artifactItems>
                        </configuration>
                    </execution>
                </executions>
            </plugin>
       </plugins>
    </build>    
</project>

方法AutoML Extraction.xml

public void extracNL(String content) throws Exception {
   String googleCredentials = "/path/credentials.json"
   GoogleCredentials credentials = GoogleCredentials.fromStream(new FileInputStream(googleCredentials)).createScoped(Lists.newArrayList("https://www.googleapis.com/auth/cloud-platform"));

   PredictionServiceSettings settings = 
PredictionServiceSettings.newBuilder().setCredentialsProvider(FixedCredentialsProvider.create(credentials)).build();

   //The problem is presented in this line of code
   PredictionServiceClient serviceClient = 
   PredictionServiceClient.create(settings);

   ModelName modelName = ModelName.of("projectId", "computeRegion", "modelId");
        TextSnippet snippet = TextSnippet.newBuilder().setContent(content).setMimeType("text/plain").build();
        ExamplePayload payload = ExamplePayload.newBuilder().setTextSnippet(snippet).build();

        Map<String, String> params = new HashMap<>();
        PredictResponse response = serviceClient.predict(modelName, payload, params);
        List<PredictGoogleDTO> predictionsTmp = new ArrayList<>();

        for (AnnotationPayload annotationPayload : response.getPayloadList()) {
            if (annotationPayload.getDisplayName().equals("Person")) {
                System.out.println("DisplayName="+annotationPayload.getDisplayName());
                System.out.println("Content="+annotationPayload.getTextExtraction().getTextSegment().getContent());
            }
        }
}

还有另一种方法吗?我的应用程序真的不可能在pom中使用番石榴版本,而不是在payara服务器中使用吗?在maven mvndependecy中测试命令行后;我的项目路径中的tree -Dverbose 我没有得到任何依赖错误。番石榴真的能成为这个错误的原因吗?我觉得我已经尽了一切努力,但我无法找到解决问题的可能的方法,在此先感谢您。

1 个答案:

答案 0 :(得分:0)

在其BETA版本中使用AutoML自然语言API时,其中许多可能会出现此错误和其他错误,这是正常现象,我们必须假设作为BETA版本会出现这种类型的问题。我的解决方案是将API的使用与我的JAVA EE应用程序隔离开来,首次在AWS(Amazon Web Service)中实现lambda函数,并通过对该函数的REST调用使用该服务。这对我来说非常完美,这是一个干净的解决方案(从我的角度来看)。问候。