我正在嘗試使用Dropwizard創建一個WS REST來獲取查詢的Hive結果並以XML格式進行呈現。這可以完成每個分離的部分沒有錯誤。Dropwizard和hive-jdbc之間的不兼容
當我加入所有內容時,我遇到了Dropwizard和hive-jdbc之間的不兼容問題。顯然hive-jdbc有球衣1作爲依賴,Dropwizard有球衣2.
我不確定這是否是問題。我試圖在pom.xml中排除依賴關係,但沒有解決。
我試圖製作一個應用程序,只需將hive-jdbc作爲依賴項放置在pom.xml文件中,而不用在代碼的任何部分使用或導入,並且錯誤仍在發生。
的pom.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/maven-v4_0_0.xsd">
<prerequisites>
<maven>3.0.0</maven>
</prerequisites>
<modelVersion>4.0.0</modelVersion>
<groupId>test</groupId>
<artifactId>ws-test</artifactId>
<version>1.0.0</version>
<name>ws-test</name>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<dropwizard.version>1.0.5</dropwizard.version>
<mainClass>test.TestApp</mainClass>
</properties>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>io.dropwizard</groupId>
<artifactId>dropwizard-bom</artifactId>
<version>${dropwizard.version}</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
<dependencies>
<dependency>
<groupId>io.dropwizard</groupId>
<artifactId>dropwizard-core</artifactId>
</dependency>
<dependency>
<groupId>io.dropwizard</groupId>
<artifactId>dropwizard-forms</artifactId>
</dependency>
<dependency>
<groupId>org.apache.hive</groupId>
<artifactId>hive-jdbc</artifactId>
<version>1.1.0</version>
</dependency>
<dependency>
<groupId>org.apache.hadoop</groupId>
<artifactId>hadoop-core</artifactId>
<version>1.2.1</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<artifactId>maven-shade-plugin</artifactId>
<version>2.4.1</version>
<configuration>
<createDependencyReducedPom>true</createDependencyReducedPom>
<transformers>
<transformer
implementation="org.apache.maven.plugins.shade.resource.ServicesResourceTransformer" />
<transformer
implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
<mainClass>${mainClass}</mainClass>
</transformer>
</transformers>
<!-- exclude signed Manifests -->
<filters>
<filter>
<artifact>*:*</artifact>
<excludes>
<exclude>META-INF/*.SF</exclude>
<exclude>META-INF/*.DSA</exclude>
<exclude>META-INF/*.RSA</exclude>
</excludes>
</filter>
</filters>
</configuration>
<executions>
<execution>
<phase>package</phase>
<goals>
<goal>shade</goal>
</goals>
</execution>
</executions>
</plugin>
<plugin>
<artifactId>maven-jar-plugin</artifactId>
<version>2.6</version>
<configuration>
<archive>
<manifest>
<addClasspath>true</addClasspath>
<mainClass>${mainClass}</mainClass>
<addDefaultImplementationEntries>true</addDefaultImplementationEntries>
</manifest>
</archive>
</configuration>
</plugin>
</plugins>
</build>
</project>
TestApp.java
package test;
import io.dropwizard.Application;
import io.dropwizard.forms.MultiPartBundle;
import io.dropwizard.setup.Bootstrap;
import io.dropwizard.setup.Environment;
public class TestApp extends Application<TestConf> {
public static void main(String[] args){
try {
new TestApp().run(args);
}
catch(Exception e) {
e.printStackTrace();
}
}
@Override
public String getName() {
return "ID Generator Server";
}
@Override
public void initialize(final Bootstrap<TestConf> bootstrap) {
bootstrap.addBundle(new MultiPartBundle());
}
@Override
public void run(final TestConf configuration,
final Environment environment) {
final TestRes resource = new TestRes(
configuration.getTemplate(),
configuration.getDefaultName()
);
environment.jersey().register(resource);
}
}
TestConf.java
package test;
import io.dropwizard.Configuration;
import com.fasterxml.jackson.annotation.JsonProperty;
import org.hibernate.validator.constraints.*;
public class TestConf extends Configuration {
@NotEmpty
private String template;
@NotEmpty
private String defaultName = "MarineTraffic";
@JsonProperty
public String getTemplate() {
return template;
}
@JsonProperty
public void setTemplate(String template) {
this.template = template;
}
@JsonProperty
public String getDefaultName() {
return defaultName;
}
@JsonProperty
public void setDefaultName(String name) {
this.defaultName = name;
}
}
TestRes.java
package test;
import javax.ws.rs.GET;
import javax.ws.rs.Path;
import javax.ws.rs.Produces;
import javax.ws.rs.core.MediaType;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
@Path("/hive")
public class TestRes {
protected final static Logger LOGGER = LoggerFactory.getLogger(TestRes.class);
protected final static String HEADER = "GroupService::";
public TestRes(String template, String defaultName) {
LOGGER.info(HEADER + "init: PostConstruct");
}
@GET
@Path("/test")
@Produces(MediaType.TEXT_PLAIN)
public String getNewID() {
return "works";
}
}
我得到的錯誤是這樣的:
WARN [2017-08-10 21:50:21,444] org.glassfish.jersey.internal.Errors: The following warnings have been detected: WARNING: Unknown HK2 failure detected:
MultiException stack 1 of 2
java.lang.NullPointerException
at com.sun.jersey.core.provider.jaxb.AbstractJAXBProvider.setConfiguration(AbstractJAXBProvider.java:107)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
...
at test.TestApp.main(TestApp.java:12)
MultiException stack 2 of 2
java.lang.IllegalStateException: Unable to perform operation: method inject on com.sun.jersey.core.impl.provider.entity.XMLRootElementProvider$App
at org.jvnet.hk2.internal.ClazzCreator.create(ClazzCreator.java:392)
at org.jvnet.hk2.internal.SystemDescriptor.create(SystemDescriptor.java:471)
...
WARNING: Unknown HK2 failure detected:
MultiException stack 1 of 3
java.lang.NullPointerException
at com.sun.jersey.core.provider.jaxb.AbstractJAXBProvider.setConfiguration(AbstractJAXBProvider.java:107)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
...
at test.TestApp.main(TestApp.java:12)
MultiException stack 2 of 3
java.lang.IllegalStateException: Unable to perform operation: method inject on com.sun.jersey.core.impl.provider.entity.XMLRootElementProvider$App
at org.jvnet.hk2.internal.ClazzCreator.create(ClazzCreator.java:392)
at org.jvnet.hk2.internal.SystemDescriptor.create(SystemDescriptor.java:471)
...
at test.TestApp.main(TestApp.java:12)
MultiException stack 3 of 3
java.lang.IllegalStateException: Unable to perform operation: create on org.glassfish.jersey.message.internal.MessageBodyFactory
at org.jvnet.hk2.internal.ClazzCreator.create(ClazzCreator.java:386)
at org.jvnet.hk2.internal.SystemDescriptor.create(SystemDescriptor.java:471)
...
我發現,一些用戶遇到類似的錯誤(如dropwizard and hive/hiverunner integration with maven和http://thread.gmane.org/gmane.comp.java.dropwizard.devel/461)
難道這(澤西不兼容)導致錯誤的問題?有誰知道如何解決它?
看看maven shade插件。 –
我試圖在maven-shade-plugin配置中添加排除子句來刪除球衣服務器,maven抱怨不兼容。然而,沒有什麼變化。 – Caio
Shade允許你重寫包名和對它們的引用 - 這樣你就可以重寫jersey1中的包,並且可以在hive-jdbc中引用它們,這可以幫助你解決你的問題。請參閱:https://stackoverflow.com/questions/13620281/what-is-the-maven-shade-plugin-used-for-and-why-would-you-want-to-relocate-java。 Shade旨在讓您解決不得不依賴不兼容庫的問題。如果這是你的問題,那麼這可能會解決它。但是,這看起來很像反射,這意味着ymmv。 –