如何使用maven的pom.xml來引用本地jar包

給一個小Demo

<dependency>
      <groupId>your.organization</groupId>
      <artifactId>your-sdk-util</artifactId>
      <version>1.1.1.0</version>
      <scope>system</scope>
      <systemPath>${basedir}/lib/your-sdk-ver.jar</systemPath>
</dependency>      

坐标可以任意給。${basedir}表示項目根目錄。但打包時會出如下告警：

[WARNING] 
[WARNING] Some problems were encountered while building the effective model for com.wo:AlarmReport:jar:0.0.1-SNAPSHOT
[WARNING] 'dependencies.dependency.systemPath' for com.wo:taobao-sdk-java-auto:jar should not point at files within the project directory, ${basedir}/lib/taobao-sdk-java-auto.jar will be unresolvable by dependent projects @ line 61, column 16
[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]      

是以需要把${basedir}改為${pom.basedir}

<systemPath>${pom.basedir}/lib/your-sdk-ver.jar</systemPath>      

這樣來抑制上述告警。

pom.xml檔案的打包插件要配置includeSystemScope屬性，否則scope為system的依賴包不會被maven打包進項目，導緻打包後的項目無法引用本地的第三方jar包。

<build>
    <plugins>
        <plugin>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-maven-plugin</artifactId>
            <configuration>
                <includeSystemScope>true</includeSystemScope>
                <fork>true</fork>
            </configuration>
        </plugin>
    </plugins>
</build>      

也可以把jar包通過maven安裝到本地（倉庫）再引用

操作步驟如下：

1. cmd指令進入該jar包所在路徑。
2. 執行如下語句：

mvn install:install-file -Dfile=bdl-service-1.0-SNAPSHOT.jar -DgroupId=com.baidu -DartifactId=bdl-service -Dversion=1.0-SNAPSHOT -Dpackaging=jar      

語句說明：把bdl-service-1.0-SNAPSHOT.jar安裝到repository\com\baidu\bdl-service\1.0-SNAPSHOT\目錄下。

-Dfile ：本地jar包名稱。

-DgroupId ：安裝到repository的中路徑

-DartifactId ：安裝到repository的中路徑

1. pom.xml中引用坐标：

<dependency>
  <groupId>com.baidu</groupId>
  <artifactId>bdl-service</artifactId>
  <version>1.0-SNAPSHOT</version>
</dependency>