使用maven解决jar冲突

1.pom部分配置如下

<plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-shade-plugin</artifactId>
                <version>2.1</version>
                <executions>
                    <execution>
                        <phase>package</phase>
                        <goals>
                            <goal>shade</goal>
                        </goals>
                        <configuration>
                            <shadedArtifactAttached>false</shadedArtifactAttached>
                            <createSourcesJar>true</createSourcesJar>
                            <relocations>
                                <relocation>
                                    <pattern>com.fasterxml</pattern>
                                    <shadedPattern>shaded.com.fasterxml</shadedPattern>
                                </relocation>
                            </relocations>
                        </configuration>
                    </execution>
                </executions>
            </plugin>

将包名com.fasterxml.jackson.databind改为shaded.com.fasterxml.jackson.databind
这样就不会和其他jar中依赖的fasterxml jar包冲突了。
最好是将com.fasterxml改为shaded.com.fasterxml，因为只改com.fasterxml.jackson.databind的话，com.fasterxml下的其他包和类有可能受到影响而出错。
编译命令

mvn package

参考https://maven.apache.org/components/plugins/maven-shade-plugin/examples/class-relocation.html