报错:java.lang.IllegalArgumentException: Illegal base64 character a

截图代码报错

File screenshot = ((TakesScreenshot) driver).getScreenshotAs(OutputType.FILE);

使用 Android 驱动程序截取屏幕截图时,代码都会出现报错:

java.lang.IllegalArgumentException: Illegal base64 character a
 at java.base/java.util.Base64$Decoder.decode0(Base64.java:746)
	at java.base/java.util.Base64$Decoder.decode(Base64.java:538)
	at java.base/java.util.Base64$Decoder.decode(Base64.java:561)
	at org.openqa.selenium.OutputType$2.convertFromBase64Png(OutputType.java:58)
	at org.openqa.selenium.OutputType$2.convertFromBase64Png(OutputType.java:55)
	at org.openqa.selenium.OutputType$3.convertFromBase64Png(OutputType.java:78)
	at org.openqa.selenium.OutputType$3.convertFromBase64Png(OutputType.java:75)
  • 驱动程序尝试将 png 转换为 base64 时似乎失败了

环境细节:

版本

  • npm 版本 : 8.11.0
  • node 版本 : 16.16.0
  • 运行 Appium 的操作系统:Mac 版本 13.0.1
  • Android 手机版本 : 12.0.0
  • appium server : 1.22.3
  • [jar包] java-client : 8.2.0
  • [jar包] selenium-java : 4.5.3

解决方案:

使用maven命令行mvn dependency:tree查看对应项目的依赖树,对应Appium java 客户端下使用的selenium的依赖版本为4.5.3。
这是 Selenium 的问题,Appium java 客户端8.2.0版本应该引用selenium的依赖版本为4.5.0,修改pom文件中对应selenium
版本号即可解决。
如果还报错,则直接复制以下pom文件:

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <maven.compiler.encoding>UTF-8</maven.compiler.encoding>
        <java.version>11</java.version>
        <!-- 使用 Java 11 语言特性 ( -source 11 ) 并且还希望编译后的类与 JVM 11 ( -target 11 )兼容,您可以添加以下两个属性,它们是默认属性插件参数的名称-->
        <maven.compiler.target>11</maven.compiler.target>
        <maven.compiler.source>11</maven.compiler.source>
        <!-- 对应junit Jupiter的版本号;放在这里就不需要在每个依赖里面写版本号,导致对应版本号会冲突-->
        <junit.jupiter.version>5.9.1</junit.jupiter.version>
        <!-- log日志 -->
        <slf4j.version>2.0.3</slf4j.version>
        <logback.version>1.4.3</logback.version>
        <!-- plugins -->
        <maven.compiler.version>3.8.1</maven.compiler.version>
        <maven-surefire-plugin.version>3.0.0-M5</maven-surefire-plugin.version>
        <!-- 断言-->
        <hamcrest.version>2.2</hamcrest.version>

        <!--allure报告-->
        <allure.version>2.18.1</allure.version>
        <allure-maven.version>2.10.0</allure-maven.version>
        <allure.cmd.download.url>
            https://repo.maven.apache.org/maven2/io/qameta/allure/allure-commandline
        </allure.cmd.download.url>
        <aspectj.version>1.9.9.1</aspectj.version>
        <!-- faker -->
        <javafaker.version>1.0.2</javafaker.version>
        <!-- selenium -->
        <selenium.version>4.5.0</selenium.version>
        <!-- appium -->
        <appium.version>8.2.0</appium.version>
        <jackson.version>2.13.1</jackson.version>
        <commonio.version>2.11.0</commonio.version>
    </properties>
    <!--    物料清单 (BOM)-->
    <dependencyManagement>
        <dependencies>
            <!--当使用 Gradle 或 Maven 引用多个 JUnit 工件时,此物料清单 POM 可用于简化依赖项管理。不再需要在添加依赖时设置版本-->
            <dependency>
                <groupId>org.junit</groupId>
                <artifactId>junit-bom</artifactId>
                <version>${junit.jupiter.version}</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
            <!--            <dependency>-->
            <!--                <groupId>org.seleniumhq.selenium</groupId>-->
            <!--                <artifactId>selenium-remote-driver</artifactId>-->
            <!--                <version>4.5.0</version>-->
            <!--            </dependency>-->
            <!--            <dependency>-->
            <!--                <groupId>org.seleniumhq.selenium</groupId>-->
            <!--                <artifactId>selenium-api</artifactId>-->
            <!--                <version>4.5.0</version>-->
            <!--            </dependency>-->
        </dependencies>
    </dependencyManagement>


    <dependencies>
        <!--        <dependency>-->
        <!--            <groupId>org.seleniumhq.selenium</groupId>-->
        <!--            <artifactId>selenium-support</artifactId>-->
        <!--            <version>4.5.0</version>-->
        <!--        </dependency>-->
        <!--junit5-->
        <dependency>
            <groupId>org.junit.jupiter</groupId>
            <artifactId>junit-jupiter</artifactId>
            <!--对应添加的依赖的作用范围-->
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>org.junit.platform</groupId>
            <artifactId>junit-platform-suite</artifactId>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>org.junit.vintage</groupId>
            <artifactId>junit-vintage-engine</artifactId>
            <scope>test</scope>
        </dependency>
        <!--hamcrest断言-->
        <dependency>
            <groupId>org.hamcrest</groupId>
            <artifactId>hamcrest</artifactId>
            <version>${hamcrest.version}</version>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>org.hamcrest</groupId>
            <artifactId>hamcrest-core</artifactId>
            <version>${hamcrest.version}</version>
            <scope>test</scope>
        </dependency>
        <!--faster json解析yaml文件 -->
        <dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-databind</artifactId>
            <version>${jackson.version}</version>
            <scope>compile</scope>
        </dependency>
        <dependency>
            <groupId>com.fasterxml.jackson.dataformat</groupId>
            <artifactId>jackson-dataformat-yaml</artifactId>
            <version>${jackson.version}</version>
            <scope>compile</scope>
        </dependency>
        <!-- log日志 -->
        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-api</artifactId>
            <version>${slf4j.version}</version>
        </dependency>
        <dependency>
            <groupId>ch.qos.logback</groupId>
            <artifactId>logback-classic</artifactId>
            <version>${logback.version}</version>
        </dependency>

        <!-- common io-->
        <dependency>
            <groupId>commons-io</groupId>
            <artifactId>commons-io</artifactId>
            <version>${commonio.version}</version>
        </dependency>
        <!-- allure-->
        <dependency>
            <groupId>io.qameta.allure</groupId>
            <artifactId>allure-junit5</artifactId>
            <version>${allure.version}</version>
            <scope>compile</scope>
        </dependency>
        <dependency>
            <groupId>org.aspectj</groupId>
            <artifactId>aspectjweaver</artifactId>
            <version>${aspectj.version}</version>
            <scope>runtime</scope>
        </dependency>
        <!--  随机测试数据生成库  -->
        <dependency>
            <groupId>com.github.javafaker</groupId>
            <artifactId>javafaker</artifactId>
            <version>${javafaker.version}</version>
        </dependency>
        <!-- selenium-->
        <dependency>
            <groupId>org.seleniumhq.selenium</groupId>
            <artifactId>selenium-java</artifactId>
            <version>${selenium.version}</version>
            <scope>compile</scope>
        </dependency>
        <!-- appium -->
        <dependency>
            <groupId>io.appium</groupId>
            <artifactId>java-client</artifactId>
            <version>${appium.version}</version>
            <scope>compile</scope>
        </dependency>
    </dependencies>
    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-surefire-plugin</artifactId>
                <version>${maven-surefire-plugin.version}</version>
                <configuration>
                    <argLine>
                        -javaagent:"${settings.localRepository}/org/aspectj/aspectjweaver/${aspectj.version}/aspectjweaver-${aspectj.version}.jar"
                    </argLine>
                    <includes>
                        <include>**/*Test</include>
                    </includes>
                </configuration>
                <dependencies>
                    <dependency>
                        <groupId>org.junit.jupiter</groupId>
                        <artifactId>junit-jupiter-engine</artifactId>
                        <version>${junit.jupiter.version}</version>
                    </dependency>
                    <dependency>
                        <groupId>org.junit.vintage</groupId>
                        <artifactId>junit-vintage-engine</artifactId>
                        <version>${junit.jupiter.version}</version>
                    </dependency>
                </dependencies>
            </plugin>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>${maven.compiler.version}</version>
                <configuration>
                    <parameters>true</parameters>
                    <!-- 设置jre版本为 11 -->
                    <source>${maven.compiler.source}</source>
                    <target>${maven.compiler.target}</target>
                    <!-- 设置编码为 UTF-8 -->
                    <encoding>${maven.compiler.encoding}</encoding>
                </configuration>
            </plugin>

            <plugin>
                <groupId>io.qameta.allure</groupId>
                <artifactId>allure-maven</artifactId>
                <version>${allure-maven.version}</version>
                <configuration>
                    <reportVersion>${allure.version}</reportVersion>
                    <allureDownloadUrl>${allure.cmd.download.url}/${allure.version}/allure-commandline-${allure.version}.zip</allureDownloadUrl>
                </configuration>
            </plugin>
        </plugins>
    </build>

issue

Appium社区对应该issue描述及其解决方案:
Appium issue

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