java.io.IOException: The input doesn't contain any classes. Did you specify the proper '-injars' opt

標籤：maven   打包   version   proguard   ioexceptio   

問題情境

在使用Maven + Proguard打包項目進行混淆時，提示以下錯誤：

[proguard] ProGuard, version 4.4 [proguard] Reading input... [proguard] java.io.IOException: The input doesn‘t contain any classes. Did you specify the proper ‘-injars‘ options? [proguard]     at proguard.InputReader.execute(InputReader.java:91) [proguard]     at proguard.ProGuard.readInput(ProGuard.java:195) [proguard]     at proguard.ProGuard.execute(ProGuard.java:78) [proguard]     at proguard.ProGuard.main(ProGuard.java:499)

問題分析

缺少injars配置項！
-injars {class_path} 指定要處理的應用程式jar,war,ear和目錄

解決方案

添加injars配置項，由於是Web項目，所以這裡指定的是war

<injar>${project.build.finalName}.war</injar>

完整樣本：

            <plugin>                <groupId>com.pyx4me</groupId>                <artifactId>proguard-maven-plugin</artifactId>                <version>2.0.4</version>                <executions>                    <execution>                        <phase>package</phase>                        <goals>                            <goal>proguard</goal>                        </goals>                    </execution>                </executions>                <configuration>                    <obfuscate>true</obfuscate>                    <proguardInclude>${basedir}/proguard.conf</proguardInclude>                    <!-- 添加依賴，這裡你可以按你的需要修改 -->                    <libs>                        <lib>${java.home}/lib/rt.jar</lib>                        <lib>lib/jsp-api.jar</lib>                        <lib>lib/servlet-api.jar</lib>                    </libs>                    <addMavenDescriptor>false</addMavenDescriptor>                    <injar>${project.build.finalName}.war</injar>                    <outjar>${project.build.finalName}-pg.war</outjar>                    <outputDirectory>${project.build.directory}</outputDirectory>                </configuration>                <dependencies>                     <!-- 使用4.4版本來混淆 -->                    <dependency>                        <groupId>net.sf.proguard</groupId>                        <artifactId>proguard</artifactId>                          <version>4.4</version>                        <scope>runtime</scope>                    </dependency>                </dependencies>            </plugin>

java.io.IOException: The input doesn't contain any classes. Did you specify the proper '-injars' opt