我有两个莱宁根项目。根据this question ，maven 应该允许我使用“LATEST”作为依赖版本。它给我一个错误，提示无法找到版本“LATEST”的依赖项。 This answer代表我如何在本地使用 leiningen 引用该项目(如果重要的话)。
我该如何让它发挥作用？如果这不是您在项目中引用本地依赖项的方式，我愿意接受其他建议。
项目文件如下所示:
(defproject mongo-model "0.0.19-SNAPSHOT"
:description "A simple way to create model templates for mongodb for write-time data validation"
:dependencies [[org.clojure/clojure "1.3.0"]]
:main mongo-model.core)
和
(defproject bayou "0.1.0-SNAPSHOT"
:description "FIXME: write this!"
:dependencies [[org.clojure/clojure "1.3.0"]
[mongo-model "LATEST"]]
:main bayou.server)
在第二个项目中运行 lein deps 会出现以下错误:
An error has occurred while processing the Maven artifact tasks.
Diagnosis:
Unable to resolve artifact: Missing:
----------
1) mongo-model:mongo-model:jar:LATEST
Try downloading the file manually from the project website.
Then, install it using the command:
mvn install:install-file -DgroupId=mongo-model -DartifactId=mongo-model -Dversion=LATEST -Dpackaging=jar -Dfile=/path/to/file
Alternatively, if you host your own repository you can deploy the file there:
mvn deploy:deploy-file -DgroupId=mongo-model -DartifactId=mongo-model -Dversion=LATEST -Dpackaging=jar -Dfile=/path/to/file -Durl=[url] -DrepositoryId=[id]
Path to dependency:
1) org.apache.maven:super-pom:jar:2.0
2) mongo-model:mongo-model:jar:LATEST
----------
1 required artifact is missing.
for artifact:
org.apache.maven:super-pom:jar:2.0
from the specified remote repositories:
clojars (http://clojars.org/repo/),
central (http://repo1.maven.org/maven2)
Exception in thread "main" Unable to resolve artifact: Missing:
----------
1) mongo-model:mongo-model:jar:LATEST
Try downloading the file manually from the project website.
Then, install it using the command:
mvn install:install-file -DgroupId=mongo-model -DartifactId=mongo-model -Dversion=LATEST -Dpackaging=jar -Dfile=/path/to/file
Alternatively, if you host your own repository you can deploy the file there:
mvn deploy:deploy-file -DgroupId=mongo-model -DartifactId=mongo-model -Dversion=LATEST -Dpackaging=jar -Dfile=/path/to/file -Durl=[url] -DrepositoryId=[id]
Path to dependency:
1) org.apache.maven:super-pom:jar:2.0
2) mongo-model:mongo-model:jar:LATEST
----------
1 required artifact is missing.
for artifact:
org.apache.maven:super-pom:jar:2.0
from the specified remote repositories:
clojars (http://clojars.org/repo/),
central (http://repo1.maven.org/maven2)
(NO_SOURCE_FILE:0)
at clojure.lang.Compiler.eval(Compiler.java:5440)
at clojure.lang.Compiler.eval(Compiler.java:5391)
at clojure.core$eval.invoke(core.clj:2382)
at clojure.main$eval_opt.invoke(main.clj:235)
at clojure.main$initialize.invoke(main.clj:254)
at clojure.main$script_opt.invoke(main.clj:270)
at clojure.main$main.doInvoke(main.clj:354)
at clojure.lang.RestFn.invoke(RestFn.java:457)
at clojure.lang.Var.invoke(Var.java:377)
at clojure.lang.AFn.applyToHelper(AFn.java:172)
at clojure.lang.Var.applyTo(Var.java:482)
at clojure.main.main(main.java:37)
Caused by: Unable to resolve artifact: Missing:
----------
1) mongo-model:mongo-model:jar:LATEST
Try downloading the file manually from the project website.
Then, install it using the command:
mvn install:install-file -DgroupId=mongo-model -DartifactId=mongo-model -Dversion=LATEST -Dpackaging=jar -Dfile=/path/to/file
Alternatively, if you host your own repository you can deploy the file there:
mvn deploy:deploy-file -DgroupId=mongo-model -DartifactId=mongo-model -Dversion=LATEST -Dpackaging=jar -Dfile=/path/to/file -Durl=[url] -DrepositoryId=[id]
Path to dependency:
1) org.apache.maven:super-pom:jar:2.0
2) mongo-model:mongo-model:jar:LATEST
----------
1 required artifact is missing.
for artifact:
org.apache.maven:super-pom:jar:2.0
from the specified remote repositories:
clojars (http://clojars.org/repo/),
central (http://repo1.maven.org/maven2)
at org.apache.maven.artifact.ant.DependenciesTask.doExecute(DependenciesTask.java:175)
at org.apache.maven.artifact.ant.AbstractArtifactTask.execute(AbstractArtifactTask.java:678)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at clojure.lang.Reflector.invokeMatchingMethod(Reflector.java:90)
at clojure.lang.Reflector.invokeNoArgInstanceMember(Reflector.java:265)
at leiningen.deps$do_deps.invoke(deps.clj:131)
at leiningen.deps$deps.doInvoke(deps.clj:195)
at clojure.lang.RestFn.invoke(RestFn.java:410)
at clojure.lang.Var.invoke(Var.java:365)
at clojure.lang.AFn.applyToHelper(AFn.java:161)
at clojure.lang.Var.applyTo(Var.java:482)
at clojure.core$apply.invoke(core.clj:542)
at leiningen.core$apply_task.invoke(core.clj:228)
at leiningen.core$_main.doInvoke(core.clj:294)
at clojure.lang.RestFn.invoke(RestFn.java:410)
at clojure.lang.AFn.applyToHelper(AFn.java:161)
at clojure.lang.RestFn.applyTo(RestFn.java:132)
at clojure.core$apply.invoke(core.clj:542)
at leiningen.core$_main.invoke(core.clj:297)
at user$eval42.invoke(NO_SOURCE_FILE:1)
at clojure.lang.Compiler.eval(Compiler.java:5424)
... 11 more
Caused by: org.apache.maven.artifact.resolver.MultipleArtifactsNotFoundException: Missing:
----------
1) mongo-model:mongo-model:jar:LATEST
Try downloading the file manually from the project website.
Then, install it using the command:
mvn install:install-file -DgroupId=mongo-model -DartifactId=mongo-model -Dversion=LATEST -Dpackaging=jar -Dfile=/path/to/file
Alternatively, if you host your own repository you can deploy the file there:
mvn deploy:deploy-file -DgroupId=mongo-model -DartifactId=mongo-model -Dversion=LATEST -Dpackaging=jar -Dfile=/path/to/file -Durl=[url] -DrepositoryId=[id]
Path to dependency:
1) org.apache.maven:super-pom:jar:2.0
2) mongo-model:mongo-model:jar:LATEST
----------
1 required artifact is missing.
for artifact:
org.apache.maven:super-pom:jar:2.0
from the specified remote repositories:
clojars (http://clojars.org/repo/),
central (http://repo1.maven.org/maven2)
at org.apache.maven.artifact.resolver.DefaultArtifactResolver.resolveTransitively(DefaultArtifactResolver.java:324)
at org.apache.maven.artifact.ant.DependenciesTask.doExecute(DependenciesTask.java:170)
... 34 more
最佳答案
这里有两件事在起作用:标准依赖项解析和 checkouts 目录的便利性。
checkouts 目录
checkouts 目录的功能非常简单:Leiningen 期望在那里找到一个或多个目录，每个目录都包含另一个 Leiningen 项目。通常您会在此处创建指向其他项目的符号链接(symbolic link)。对于每个链接的项目，源路径、编译路径和资源路径都会添加到类路径中。 (默认情况下 - 可以配置目录列表。)
这意味着链接项目的命名空间在父项目中可用，无论它们是否包含在依赖项中。不过，您仍然应该将它们包含在依赖项中，以便其他人可以使用您的代码库。
依赖项
依赖解析机制不关心 checkouts 目录。它尝试查找本地和远程 Maven 存储库中的所有依赖项。如果您依赖于从未安装在存储库中的本地项目，则无法找到该项目，并且 Leiningen 将出现类似问题中所示的错误，即使该项目已链接到 中checkouts 目录。
您需要在本地存储库中至少安装一次您所依赖的 Artifact 。这就像调用 lein install 一样简单。您不需要在每次更改后都执行此操作，因为您始终通过 checkouts 符号链接(symbolic link)使用最新的代码。
关于使用LATEST:我想说的是，鼓励对依赖项使用固定版本号。这是防止曾经成功的构建由于依赖项的更改而突然中断的唯一方法。另请参阅这个问题:How do I tell Maven to use the latest version of a dependency?
关于maven - leiningen项目中使用maven的 "LATEST"关键字，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/8426195/