设置maven存储库

Question

我的新项目需要javax.xml包。我在mvnrepository.com上搜索了一下，找到了one：

<!-- https://mvnrepository.com/artifact/javax.xml/jaxrpc-api -->
<dependency>
    <groupId>javax.xml</groupId>
    <artifactId>jaxrpc-api</artifactId>
    <version>2.0_EA1</version>
</dependency>

我想，第一个注释行是包存储库。如果我说错了，请纠正我。我在我的pom.xml中添加了以下部分

<repositories>
  <repository>
    <id>repo1</id>
    <name>Repo 1</name>
    <url>https://mvnrepository.com/artifact/javax.xml/jaxrpc-api</url>
  </repository>
</repositories>

<dependencies>
  <dependency>
    <groupId>javax.xml</groupId>
    <artifactId>jaxrpc-api</artifactId>
    <version>2.0_EA1</version>
  </dependency>
</dependencies>

但是看起来我搞错了maven地址。

mvn compile带来错误：

[ERROR] Failed to execute goal on project test-xpath: Could not resolve dependencies for project com.kkk:test-xpath:jar:0.0.1-SNAPSHOT: Failure to find javax.xml:jaxrpc-api:jar:2.0_EA1 in https://mvnrepository.com/artifact/javax.xml/jaxrpc-api was cached in the local repository, resolution will not be reattempted until the update interval of repo1 has elapsed or updates are forced -> [Help 1]

我做错了什么，怎么改正？

更新

删除存储库后，我收到错误：

 Failed to execute goal on project test-xpath: Could not resolve dependencies for project com.kkk:test-xpath:jar:0.0.1-SNAPSHOT: Failure to find javax.xml:jaxrpc-api:jar:2.0_EA1 in https://mvnrepository.com/artifact/javax.xml/jaxrpc-api was cached in the local repository, resolution will not be reattempted until the update interval of repo1 has elapsed or updates are forced -> [Help 1]

UPD2

我了解到我应该将spring存储库添加到我的依赖项中：

    <repositories>
    <repository>
      <id>repo1</id>
      <name>Repo 1</name>
      <url>http://repo.spring.io/plugins-release/</url>
    </repository>
  </repositories> 

我已经删除了.m2\repository\javax和maven clean

maven compile产生的错误：

Downloading from repo1: http://repo.spring.io/plugins-release/javax/xml/jaxrpc-api/2.0_EA1/jaxrpc-api-2.0_EA1.pom
Downloaded from repo1: http://repo.spring.io/plugins-release/javax/xml/jaxrpc-api/2.0_EA1/jaxrpc-api-2.0_EA1.pom (395 B at 736 B/s)
Downloading from repo1: http://repo.spring.io/plugins-release/javax/xml/jaxrpc-api/2.0_EA1/jaxrpc-api-2.0_EA1.jar
Downloading from central: https://repo.maven.apache.org/maven2/javax/xml/jaxrpc-api/2.0_EA1/jaxrpc-api-2.0_EA1.jar
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time:  1.767 s
[INFO] Finished at: 2018-11-07T14:17:38+02:00
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal on project test-xpath: Could not resolve dependencies for project com.kkk:test-xpath:jar:0.0.1-SNAPSHOT: Could not find artifact javax.xml:jaxrpc-api:jar:2.0_EA1 in repo1 (http://repo.spring.io/plugins-release/), try downloading from https://jax-rpc.dev.java.net/jaxrpc20-ea/ -> [Help 1]

如果我在我的pom.xml中没有<repository>的情况下执行相同的操作，并执行maven compile，我也会遇到相同的错误，但它会尝试从maven.repo下载pom。

Downloading from central: https://repo.maven.apache.org/maven2/javax/xml/jaxrpc-api/2.0_EA1/jaxrpc-api-2.0_EA1.pom
Downloaded from central: https://repo.maven.apache.org/maven2/javax/xml/jaxrpc-api/2.0_EA1/jaxrpc-api-2.0_EA1.pom (395 B at 987 B/s)
Downloading from central: https://repo.maven.apache.org/maven2/javax/xml/jaxrpc-api/2.0_EA1/jaxrpc-api-2.0_EA1.jar
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time:  1.180 s
[INFO] Finished at: 2018-11-07T14:31:44+02:00
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal on project test-xpath: Could not resolve dependencies for project com.kpv:test-xpath:jar:0.0.1-SNAPSHOT: Could not find artifact javax.xml:jaxrpc-api:jar:2.0_EA1 in central (https://repo.maven.apache.org/maven2), try downloading from https://jax-rpc.dev.java.net/jaxrpc20-ea/ -> [Help 1]

Answer 1

这不是存储库标签的正确用法。如果你转到https://mvnrepository.com主页，你会看到它从多个存储库创建索引，比如central，jcenter等，所以你必须使用标准存储库。

Answer 2

如果我们打开maven repository页面，我们可以看到两个选项卡: Central和Spring Plugins。打开Spring plugins选项卡，尝试使用它，因为该版本是最新的，日期是2018年4月。

<!-- https://mvnrepository.com/artifact/javax.xml/jaxrpc-api -->
<dependency>
    <groupId>javax.xml</groupId>
    <artifactId>jaxrpc-api</artifactId>
    <version>2.0_ea1</version>
</dependency>

另外，运行mvn clean命令，并确保删除.m2位置中的javax文件夹。

Answer 3

2.0_EA1在Maven central上不存在。如果你使用的是1.1，你会发现它是有效的。非标准化的semver版本似乎与非官方版本相关，可能是alpha版本。对search.maven.org的搜索声称它存在，但jar本身并不存在

使用工作版本进行检查的步骤：

<dependencies>
  <dependency>
    <groupId>javax.xml</groupId>
    <artifactId>jaxrpc-api</artifactId>
    <version>1.1</version>
  </dependency>
</dependencies>

还要注意: maven显示的错误告诉您可以从url手动下载jar，它不是存储库。

为了只回答问题的标题，您可以在pom.xml中添加一个存储库，但不需要添加中央maven存储库，因此我为您提供了另一个存储库的示例：

<repositories>
    <repository>
        <id>jitpack</id>
        <name>jitpack</name>
        <url>https://jitpack.io</url>
    </repository>
</repositories>