是否有可能进行多线程maven子项目？

Question

我有一个maven项目，其子项目有自己的子项目，配置如下：

parent pom.xml listing sub-projects as modules
     sub-project 1 pom.xml listing child-projects as modules
          child project 1-1 pom.xml
          child project 1-2 pom.xml
     sub-project 2 pom.xml listing child-projects as modules
          child project 2-1 pom.xml
          child project 2-2 pom.xml
          child project 2-3 pom.xml
     sub-project 3 pom.xml listing child-projects as modules
          child project 3-1 pom.xml

子项目3取决于子项目2的输出，子项目2的输出又取决于子项目1的输出。

我想要完成的是连续运行每个子项目，并且并行运行所有子项目。所需的执行顺序如下：

Build starts
sub-project 1 execution starts
all child projects of sub-project 1 are started in their own threads
all child projects of sub-project 1 finish execution
sub-project 1 execution ends
sub-project 2 execution starts
all child projects of sub-project 2 are started in their own threads
all child projects of sub-project 2 finish execution
sub-project 2 execution ends
sub-project 3 execution starts
all child projects of sub-project 3 are started in their own threads
all child projects of sub-project 3 finish execution
sub-project 3 execution ends
Build process completes

对maven使用-T命令行参数只是立即开始执行所有项目，如下所示：

Build starts
Start sub-project 1
start sub-project 2
Start sub-project 3
Start child project n...

由于子项目之间的依赖性而失败。

有没有办法规定如何在maven中使用线程的细粒度方法？

Answer 1

我有同样的用法，并且无法使用-T选项实现它，因为它只是告诉maven使用多线程来构建项目，如果一个子项目依赖于其他并且它还没有构建，那么显然它会失败，而不是等待（哪个IMO是正确的事情，否则它可能会造成死锁并导致系统挂起）。

有关maven中并行构建的更多信息，请参阅https://cwiki.apache.org/confluence/display/MAVEN/Parallel+builds+in+Maven+3。