maven install之后報的錯誤如下：

[INFO] Scanning for projects... [INFO] Downloading: http://xxx.xxx.xxx.xxx:xxxx/nexus/content/groups/public/DubboDemo/DubboDemo/1.0-SNAPSHOT/maven-metadata.xml [INFO] Downloading: http://xxx.xxx.xxx.xxx:xxxx/nexus/content/groups/public/DubboDemo/DubboDemo/1.0-SNAPSHOT/maven-metadata.xml [WARNING] [WARNING] Some problems were encountered while building the effective model for DubboDemo:dubbo-api:war:1.0-SNAPSHOT [WARNING] 'dependencies.dependency.(groupId:artifactId:type:classifier)' must be unique: junit:junit:jar -> version 3.8.1 vs 4.11 @ DubboDemo:DubboDemo:1.0-SNAPSHOT, D:\java\maven\maven_store\DubboDemo\DubboDemo\1.0-SNAPSHOT\DubboDemo-1.0-SNAPSHOT.pom, line 59, column 17 [WARNING] [WARNING] It is highly recommended to fix these problems because they threaten the stability of your build. [WARNING] [WARNING] For this reason, future Maven versions might no longer support building such malformed projects. [WARNING] [INFO] [INFO] ------------------------------------------------------------------------ [INFO] Building dubbo-api Maven Webapp 1.0-SNAPSHOT [INFO] ------------------------------------------------------------------------ [WARNING] The POM for io.netty:netty:jar:3.10.5.Final is invalid, transitive dependencies (if any) will not be available, enable debug logging for more details [INFO] [INFO] --- maven-resources-plugin:2.6:resources (default-resources) @ dubbo-api --- [INFO] Using 'UTF-8' encoding to copy filtered resources. [INFO] Copying 0 resource [INFO] [INFO] --- maven-compiler-plugin:3.1:compile (default-compile) @ dubbo-api --- [INFO] Changes detected - recompiling the module! [INFO] Compiling 1 source file to D:\java\Workspaces\MyEclipse\dubbo-api\target\classes [INFO] ------------------------------------------------------------------------ [INFO] BUILD FAILURE [INFO] ------------------------------------------------------------------------ [INFO] Total time: 1.441 s [INFO] Finished at: 2017-07-26T16:39:58+08:00 [INFO] Final Memory: 7M/17M [INFO] ------------------------------------------------------------------------ [ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.1:compile (default-compile) on project dubbo-api: Fatal error compiling: 無效的目標版本： 1.8 -> [Help 1] [ERROR] [ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch. [ERROR] Re-run Maven using the -X switch to enable full debug logging. [ERROR] [ERROR] For more information about the errors and possible solutions, please read the following articles: [ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoExecutionException

解決辦法：

pom.xml文件中加入如下配置：

<build><plugins><!-- 解決本地的編譯問題：maven找不到jdk 將jre中的這兩個jar復制到jdk中 --><plugin><groupId>org.apache.maven.plugins</groupId><artifactId>maven-compiler-plugin</artifactId><version>3.1</version><configuration><source>1.6</source><target>1.6</target><compilerArguments><verbose /><bootclasspath>${java.home}/lib/rt.jar;${java.home}/lib/jce.jar</bootclasspath></compilerArguments></configuration></plugin></plugins> </build>

總結

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