maven publish aar 打包第三依赖方法_aar打包第三方依赖库

作者：小小林熬夜学编程 | 2024-03-28 21:04:17

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aar打包第三方依赖库

问题描述

aar打包到maven库之后，引用的时候发现报错，具体原因是aar包中的第三方库的类没有找到。

问题分析：

通过maven库引用aar包，之所以可以引用第三方依赖库，是因为同时打包生成的pom文件中包含了对第三方库的依赖，如果pom文件中没有对应依赖，则在使用方会报ClassNotFound异常。

解决方案：

既然知道了造成问题的原因，方案就很简单了，在生成pom文件的时候同时打包对应的依赖就好了,核心代码就是pom.withXml()，这段代码的原理就是在pom.xml中插入dependencies中的引用。

demo.gradle

publishing {
    repositories {
        maven {
            url mavenConfig.snapshots.url
            credentials {
                username = mavenConfig.snapshots.username
                password = mavenConfig.snapshots.password
            }
        }
    }
    publications {
        xxx_module(MavenPublication) {
            artifact "build/outputs/aar/xxx_module-release.aar"
            groupId mavenConfig.groupId// groupId
            artifactId xxxModule.artifactId // artifactId
            version xxxModule.versionName
            description xxxModule.descrp

            pom.withXml {
                def dependenciesNode = asNode().appendNode('dependencies')
                configurations.compile.allDependencies.each {
                    println 'it.name='+it.name+"  it.group="+it.group
                    if (it.group != null && (it.name != null || "unspecified".equals(it.name)) && it.version != null) {
                        println 'it.name='+it.name
                        def dependencyNode = dependenciesNode.appendNode('dependency')
                        dependencyNode.appendNode('groupId', it.group)
                        dependencyNode.appendNode('artifactId', it.name)
                        dependencyNode.appendNode('version', it.version)
                        if (it.group == groupId && project.getRootProject().aarMap.contains(it.name)) {
                            dependencyNode.appendNode('type', 'aar')
                        }

                    }
                }

                configurations.api.allDependencies.each {
                    if (it.group != null && (it.name != null || "unspecified".equals(it.name)) && it.version != null) {

                        def dependencyNode = dependenciesNode.appendNode('dependency')
                        dependencyNode.appendNode('groupId', it.group)
                        dependencyNode.appendNode('artifactId', it.name)
                        dependencyNode.appendNode('version', it.version)
                        if (it.group == groupId && project.getRootProject().aarMap.contains(it.name)) {
                            dependencyNode.appendNode('type', 'aar')
                        }

                    }
                }

                configurations.implementation.allDependencies.each {
                    if (it.group != null && (it.name != null || "unspecified".equals(it.name)) && it.version != null) {

                        def dependencyNode = dependenciesNode.appendNode('dependency')
                        dependencyNode.appendNode('groupId', it.group)
                        dependencyNode.appendNode('artifactId', it.name)
                        dependencyNode.appendNode('version', it.version)
                        if (it.group == groupId && project.getRootProject().aarMap.contains(it.name)) {
                            dependencyNode.appendNode('type', 'aar')
                        }

                    }
                }



                if (getGradle().startParameter.toString().contains("assembleDebug")) {
                    configurations.debugCompile.allDependencies.each {
                        if (it.group != null && (it.name != null || "unspecified".equals(it.name)) && it.version != null) {
                            def dependencyNode = dependenciesNode.appendNode('dependency')
                            dependencyNode.appendNode('groupId', it.group)
                            dependencyNode.appendNode('artifactId', it.name)
                            dependencyNode.appendNode('version', it.version)
                            if (it.group == groupId && project.getRootProject().aarMap.contains(it.name)) {
                                dependencyNode.appendNode('type', 'aar')
                            }

                        }
                    }
                    configurations.debugApi.allDependencies.each {
                        if (it.group != null && (it.name != null || "unspecified".equals(it.name)) && it.version != null) {

                            def dependencyNode = dependenciesNode.appendNode('dependency')
                            dependencyNode.appendNode('groupId', it.group)
                            dependencyNode.appendNode('artifactId', it.name)
                            dependencyNode.appendNode('version', it.version)
                            if (it.group == groupId && project.getRootProject().aarMap.contains(it.name)) {
                                dependencyNode.appendNode('type', 'aar')
                            }

                        }
                    }

                    configurations.debugImplementation.allDependencies.each {
                        if (it.group != null && (it.name != null || "unspecified".equals(it.name)) && it.version != null) {

                            def dependencyNode = dependenciesNode.appendNode('dependency')
                            dependencyNode.appendNode('groupId', it.group)
                            dependencyNode.appendNode('artifactId', it.name)
                            dependencyNode.appendNode('version', it.version)
                            if (it.group == groupId && project.getRootProject().aarMap.contains(it.name)) {
                                dependencyNode.appendNode('type', 'aar')
                            }

                        }
                    }


                } else {
                    configurations.releaseCompile.allDependencies.each {
                        if (it.group != null && (it.name != null || "unspecified".equals(it.name)) && it.version != null) {
                            def dependencyNode = dependenciesNode.appendNode('dependency')
                            dependencyNode.appendNode('groupId', it.group)
                            dependencyNode.appendNode('artifactId', it.name)
                            dependencyNode.appendNode('version', it.version)
                            if (it.group == groupId && project.getRootProject().aarMap.contains(it.name)) {
                                dependencyNode.appendNode('type', 'aar')
                            }

                        }
                    }

                    configurations.releaseApi.allDependencies.each {
                        if (it.group != null && (it.name != null || "unspecified".equals(it.name)) && it.version != null) {

                            def dependencyNode = dependenciesNode.appendNode('dependency')
                            dependencyNode.appendNode('groupId', it.group)
                            dependencyNode.appendNode('artifactId', it.name)
                            dependencyNode.appendNode('version', it.version)
                            if (it.group == groupId && project.getRootProject().aarMap.contains(it.name)) {
                                dependencyNode.appendNode('type', 'aar')
                            }

                        }
                    }

                    configurations.releaseImplementation.allDependencies.each {
                        if (it.group != null && (it.name != null || "unspecified".equals(it.name)) && it.version != null) {

                            def dependencyNode = dependenciesNode.appendNode('dependency')
                            dependencyNode.appendNode('groupId', it.group)
                            dependencyNode.appendNode('artifactId', it.name)
                            dependencyNode.appendNode('version', it.version)
                            if (it.group == groupId && project.getRootProject().aarMap.contains(it.name)) {
                                dependencyNode.appendNode('type', 'aar')
                            }

                        }
                    }
                }
            }
        }
    }
}
dependencies {
    implementation fileTree(dir: 'libs', include: ['*.jar'])

    implementation ('com.android.support:appcompat-v7:28.0.0'){
        exclude group: 'com.android.support'
    }
    //rx-android-java
    implementation 'com.trello:rxlifecycle:1.0'
    implementation 'com.trello:rxlifecycle-components:1.0'
    /*rotrofit*/

    //gson
    implementation 'com.google.code.gson:gson:2.8.2'
    //glide
    implementation 'com.github.bumptech.glide:glide:3.7.0'
    //retrofit
    implementation 'com.squareup.retrofit2:adapter-rxjava:2.1.0'
    implementation 'com.squareup.retrofit2:retrofit:2.1.0'
    implementation 'com.squareup.retrofit2:converter-gson:2.1.0'
    //okhttp
    implementation 'com.squareup.okhttp3:okhttp:3.10.0'
    implementation 'com.squareup.okhttp3:logging-interceptor:3.1.2'
    //greendao
    implementation 'org.greenrobot:greendao:3.2.2'
}
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在执行Task,generatePomFileForXXX_modulePublication之后，在build/publications/xxx_module/文件夹中，会生成pom_default.xml

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
  <modelVersion>4.0.0</modelVersion>
  <groupId>com.xxx.xxx</groupId>
  <artifactId>xxx-module</artifactId>
  <version>1.0.1-SNAPSHOT</version>
  <packaging>aar</packaging>
  <dependencies>
    <dependency>
      <groupId>com.android.support</groupId>
      <artifactId>appcompat-v7</artifactId>
      <version>28.0.0</version>
    </dependency>
    <dependency>
      <groupId>com.trello</groupId>
      <artifactId>rxlifecycle</artifactId>
      <version>1.0</version>
    </dependency>
    <dependency>
      <groupId>com.trello</groupId>
      <artifactId>rxlifecycle-components</artifactId>
      <version>1.0</version>
    </dependency>
    <dependency>
      <groupId>com.google.code.gson</groupId>
      <artifactId>gson</artifactId>
      <version>2.8.2</version>
    </dependency>
    <dependency>
      <groupId>com.github.bumptech.glide</groupId>
      <artifactId>glide</artifactId>
      <version>3.7.0</version>
    </dependency>
    <dependency>
      <groupId>com.squareup.retrofit2</groupId>
      <artifactId>adapter-rxjava</artifactId>
      <version>2.1.0</version>
    </dependency>
    <dependency>
      <groupId>com.squareup.retrofit2</groupId>
      <artifactId>retrofit</artifactId>
      <version>2.1.0</version>
    </dependency>
    <dependency>
      <groupId>com.squareup.retrofit2</groupId>
      <artifactId>converter-gson</artifactId>
      <version>2.1.0</version>
    </dependency>
    <dependency>
      <groupId>com.squareup.okhttp3</groupId>
      <artifactId>okhttp</artifactId>
      <version>3.10.0</version>
    </dependency>
    <dependency>
      <groupId>com.squareup.okhttp3</groupId>
      <artifactId>logging-interceptor</artifactId>
      <version>3.1.2</version>
    </dependency>
    <dependency>
      <groupId>org.greenrobot</groupId>
      <artifactId>greendao</artifactId>
      <version>3.2.2</version>
    </dependency>
  </dependencies>
</project>
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上传到仓库之后，可以检查一下对应的pom文件是否含有第三方库的依赖。

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