我有一个主项目，在其中我从其他项目中调用类，以便它们都一起运行，但是一个类总是会出现此错误：
Exception in thread "Timer-0" java.lang.NoSuchMethodError: com.fasterxml.jackson.core.JsonFactory.requiresPropertyOrdering()Z
at com.fasterxml.jackson.databind.ObjectMapper.<init>(ObjectMapper.java:571)
at com.fasterxml.jackson.databind.ObjectMapper.<init>(ObjectMapper.java:480)
at com.microsoft.bingads.internal.UriOAuthService.<init>(UriOAuthService.java:48)
at com.microsoft.bingads.internal.UriOAuthService.<init>(UriOAuthService.java:43)
at com.microsoft.bingads.internal.OAuthWithAuthorizationCode.<init>(OAuthWithAuthorizationCode.java:75)
at com.microsoft.bingads.OAuthDesktopMobileAuthCodeGrant.<init>(OAuthDesktopMobileAuthCodeGrant.java:83)
at BingAdsDesktopApp.src.main.java.com.microsoft.bingads.examples.v13.ReportRequestsActual.authenticateWithOAuth(ReportRequestsActual.java:361)
at BingAdsDesktopApp.src.main.java.com.microsoft.bingads.examples.v13.ReportRequestsActual.getAuthorizationData(ReportRequestsActual.java:290)
at BingAdsDesktopApp.src.main.java.com.microsoft.bingads.examples.v13.ReportRequestsActual.generateReportsBing(ReportRequestsActual.java:94)
at adwords.axis.v201809.reporting.DownloadCriteriaReportWithSelector.run(DownloadCriteriaReportWithSelector.java:507)
at java.util.TimerThread.mainLoop(Unknown Source)
at java.util.TimerThread.run(Unknown Source)
其他帖子建议，当您尝试同时运行不同版本的杰克逊依赖项时，会发生这种情况，但据我所知，我的两个pom.xml都具有相同的版本（每个项目的版本都不同） ）。
Pom.xml＃1：
<?xml version="1.0" encoding="UTF-8"?>
<!--
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
-->
<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>com.google.api-ads.examples</groupId>
<artifactId>adwords-axis-examples</artifactId>
<version>4.6.0</version>
<packaging>jar</packaging>
<name>AdWords Examples using Axis</name>
<description>
This project contains examples of using the Ads APIs client library for Java
with AdWords and the Apache Axis framework. Please see the README file for
more information about how to use the library.
</description>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<smokeMainClass>adwords.axis.v201809.basicoperations.GetCampaigns</smokeMainClass>
</properties>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.3</version>
<configuration>
<source>1.8</source>
<target>1.8</target>
<compilerId>eclipse</compilerId>
</configuration>
<dependencies>
<dependency>
<groupId>org.codehaus.plexus</groupId>
<artifactId>plexus-compiler-eclipse</artifactId>
<version>2.5</version>
</dependency>
</dependencies>
</plugin>
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>exec-maven-plugin</artifactId>
<version>1.6.0</version>
<executions>
<execution>
<goals>
<goal>java</goal>
</goals>
</execution>
</executions>
</plugin>
<plugin>
<artifactId>maven-assembly-plugin</artifactId>
<version>2.6</version>
<configuration>
<descriptors>
<descriptor>src/main/assembly/dependencies.xml</descriptor>
</descriptors>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-shade-plugin</artifactId>
<version>2.0</version>
<executions>
<execution>
<phase>package</phase>
<goals>
<goal>shade</goal>
</goals>
</execution>
</executions>
<configuration>
<finalName>singlejar</finalName>
<outputDirectory>${jarOutputDirectory}</outputDirectory>
<transformers>
<transformer
implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
<mainClass>${smokeMainClass}</mainClass>
</transformer>
</transformers>
</configuration>
</plugin>
</plugins>
</build>
<dependencies>
<!-- Ads client library dependencies -->
<dependency>
<groupId>com.google.api-ads</groupId>
<artifactId>ads-lib</artifactId>
<version>4.6.0</version>
</dependency>
<dependency>
<groupId>com.google.api-ads</groupId>
<artifactId>adwords-axis</artifactId>
<version>4.6.0</version>
</dependency>
<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>poi-ooxml</artifactId>
<version>3.11</version>
</dependency>
<!-- Third party dependencies -->
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>2.9.9</version>
</dependency>
<dependency>
<groupId>com.beust</groupId>
<artifactId>jcommander</artifactId>
<version>1.48</version>
</dependency>
<dependency>
<groupId>io.rest-assured</groupId>
<artifactId>rest-assured</artifactId>
<version>4.0.0</version>
<scope>test</scope>
</dependency>
<!-- Configuration to use log4j for logging -->
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>1.2.16</version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-log4j12</artifactId>
<version>1.7.7</version>
</dependency>
</dependencies>
<profiles>
<profile>
<id>smoketest</id>
<properties>
<exec.mainClass>${smokeMainClass}</exec.mainClass>
</properties>
</profile>
</profiles>
</project>
Pom.xml＃2：
<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>com.microsoft.bingads</groupId>
<version>12.13.3</version>
<name>Bing Ads Java SDK</name>
<description>The Bing Ads Java SDK is a library improving developer experience when working with the Bing Ads services by providing high-level access to features such as Bulk API, OAuth Authorization and SOAP API.</description>
<url>https://github.com/BingAds/BingAds-Java-SDK</url>
<licenses>
<license>
<name>MIT</name>
<url>https://raw.githubusercontent.com/BingAds/BingAds-Java-SDK/master/LICENSE</url>
<distribution>repo</distribution>
</license>
</licenses>
<scm>
<url>https://github.com/BingAds/BingAds-Java-SDK</url>
</scm>
<developers>
<developer>
<id>BingAds</id>
<name>Bing Ads SDK Team</name>
<organization>Microsoft</organization>
<organizationUrl>http://bingads.microsoft.com</organizationUrl>
<roles>
<role>developer</role>
</roles>
</developer>
</developers>
<build>
<plugins>
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>build-helper-maven-plugin</artifactId>
<version>1.9.1</version>
<executions>
<execution>
<id>add-source</id>
<phase>generate-sources</phase>
<goals>
<goal>add-source</goal>
</goals>
<configuration>
<sources>
<source>proxies</source>
</sources>
</configuration>
</execution>
</executions>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.2</version>
<configuration>
<source>1.8</source>
<target>1.8</target>
</configuration>
</plugin>
</plugins>
</build>
<profiles>
<profile>
<id>central-deploy</id>
<build>
<plugins>
<plugin>
<groupId>org.sonatype.plugins</groupId>
<artifactId>nexus-staging-maven-plugin</artifactId>
<version>1.6.3</version>
<extensions>true</extensions>
<configuration>
<serverId>ossrh</serverId>
<nexusUrl>https://oss.sonatype.org/</nexusUrl>
<autoReleaseAfterClose>true</autoReleaseAfterClose>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-source-plugin</artifactId>
<version>2.2.1</version>
<executions>
<execution>
<id>attach-sources</id>
<goals>
<goal>jar-no-fork</goal>
</goals>
</execution>
</executions>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-javadoc-plugin</artifactId>
<version>2.9.1</version>
<configuration>
<locale>en_US</locale>
</configuration>
<executions>
<execution>
<id>attach-javadocs</id>
<goals>
<goal>jar</goal>
</goals>
</execution>
</executions>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-gpg-plugin</artifactId>
<version>1.5</version>
<executions>
<execution>
<id>sign-artifacts</id>
<phase>verify</phase>
<goals>
<goal>sign</goal>
</goals>
</execution>
</executions>
</plugin>
</plugins>
</build>
</profile>
</profiles>
<distributionManagement>
<snapshotRepository>
<id>ossrh</id>
<url>https://oss.sonatype.org/content/repositories/snapshots</url>
</snapshotRepository>
</distributionManagement>
<dependencies>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>2.9.9</version>
</dependency>
<dependency>
<groupId>com.googlecode.jcsv</groupId>
<artifactId>jcsv</artifactId>
<version>1.4.0</version>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.11</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.easymock</groupId>
<artifactId>easymock</artifactId>
<version>3.2</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>com.sun.xml.ws</groupId>
<artifactId>jaxws-rt</artifactId>
<version>2.3.2</version>
<type>pom</type>
</dependency>
<dependency>
<groupId>com.sun.xml.ws</groupId>
<artifactId>jaxws-ri</artifactId>
<version>2.3.2</version>
<type>pom</type>
</dependency>
<dependency>
<groupId>com.sun.xml.ws</groupId>
<artifactId>rt</artifactId>
<version>2.3.2</version>
</dependency>
<dependency>
<groupId>org.apache.cxf</groupId>
<artifactId>cxf-rt-frontend-jaxws</artifactId>
<version>${cxf.version}</version>
</dependency>
<dependency>
<groupId>org.apache.cxf</groupId>
<artifactId>cxf-rt-transports-http</artifactId>
<version>${cxf.version}</version>
</dependency>
<dependency>
<groupId>org.apache.httpcomponents</groupId>
<artifactId>httpmime</artifactId>
<version>${http.version}</version>
</dependency>
<dependency>
<groupId>org.apache.httpcomponents</groupId>
<artifactId>httpclient</artifactId>
<version>${http.version}</version>
</dependency>
</dependencies>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<cxf.version>3.3.2</cxf.version>
<http.version>4.5.3</http.version>
</properties>
<artifactId>microsoft.bingads</artifactId>
</project>
两者都使用Jackson 2.9.9，所以我不确定为什么会出现此错误。