Record a jar package conflict resolution process

Problem description ：

I'm doing a function , Need to use org.apache.curator Under the curator-framework jar package , An error is reported during program operation , Compare other items 、 Looking up the data, we found that curator-framework Package version is too high , No corresponding method was found , After excluding the package of higher version , Start up project error , According to the startup log, it is found that com.google.guva.guava Of jar Packet collision , Reintroduce guava Package problem solving .

1、 Program running error ,jar Packet collision

Error message ：

java.lang.NoSuchMethodError: org.apache.curator.framework.api.CreateBuilder.creatingParentContainersIfNeeded()Lorg/apache/curator/framework/api/ProtectACLCreateModePathAndBytesable;

Problem investigation and solution ：

To find the way ：org.apache.curator.framework.api.CreateBuilder.creatingParentContainersIfNeeded

  There is no way creatingParentContainersIfNeeded, And found that curator There are two versions under the package ,4.0.1 and 2.9.1, Then I compared the previous projects to curator The version is 2.9.1, Sure is Package version conflicts , Should introduce curator-framework 2.9.1 Version package of .

lookup curator-framework Quote trees ,idea Of terminal Carry out orders

mvn dependency:tree -Dverbose -Dincludes=org.apache.curator:curator-framework

maven Rely on trees ：

  Reference found 4.0.1 Version of pom And exclude ：

After exclusion ：

 

2、 Project start error ,jar Packet collision ：

After the above problems are solved , Start up project error ：

The main idea of the error message description is not found jar Bag sameThreadExecutor Method , again jar The conflict ,23.0 Version of guava Package does not have this method .

An attempt was made to call the method com.google.common.util.concurrent.MoreExecutors.sameThreadExecutor()Lcom/google/common/util/concurrent/ListeningExecutorService; but it does not exist. Its class, com.google.common.util.concurrent.MoreExecutors, is available from the following locations:

    jar:file:/C:/Users/Administrator/.m2/repository/com/google/guava/guava/23.0/guava-23.0.jar!/com/google/common/util/concurrent/MoreExecutors.class

It was loaded from the following location:

    file:/C:/Users/Administrator/.m2/repository/com/google/guava/guava/23.0/guava-23.0.jar


Action:

Correct the classpath of your application so that it contains a single, compatible version of com.google.common.util.concurrent.MoreExecutors

Compare other items ,guava Package introduces 20.0 Version of .

stay pom To reintroduce pom rely on , Cover 23.0 Version of the package , The project started successfully ：

        <dependency>
            <groupId>com.google.guava</groupId>
            <artifactId>guava</artifactId>
            <version>20.0</version>
        </dependency>

maven View dependent commands ：

View specified jar The dependency tree of the package ：

mvn dependency:tree -Dverbose -Dincludes=org.apache.curator:curator-framework

View all of the items jar The dependency tree of the package :

mvn dependency:tree

  View all of the items jar The dependency tree of the package , And output to the specified file ：

mvn dependency:tree>D:\maven.txt