Heroku 找不到或加载主类(但它存在)

Question

我已经用这个turial在heroku上制作了java + tomcat Web应用程序，并且一切都很好。 但是后来我使用相同的示例来部署我的应用程序并遇到错误(找不到或加载主类 Main(。

我的绒球.xml：

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>net.lim</groupId>
<artifactId>eserver</artifactId>
<version>0.01a</version>
<packaging>war</packaging>
<name>eserver Maven Webapp</name>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<maven.compiler.source>1.8</maven.compiler.source>
<maven.compiler.target>1.8</maven.compiler.target>
<tomcat.version>8.5.23</tomcat.version>
</properties>
<dependencies>
<dependency>
<groupId>javax.ws.rs</groupId>
<artifactId>javax.ws.rs-api</artifactId>
<version>2.1</version>
</dependency>
<!-- Jersey 2.19 -->
<dependency>
<groupId>org.glassfish.jersey.containers</groupId>
<artifactId>jersey-container-servlet</artifactId>
<version>2.19</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.glassfish.jersey.core/jersey-server -->
<dependency>
<groupId>org.glassfish.jersey.core</groupId>
<artifactId>jersey-server</artifactId>
<version>2.19</version>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>3.1.0</version>
</dependency>
<dependency>
<groupId>org.apache.tomcat.embed</groupId>
<artifactId>tomcat-embed-core</artifactId>
<version>${tomcat.version}</version>
</dependency>
<dependency>
<groupId>org.apache.tomcat.embed</groupId>
<artifactId>tomcat-embed-jasper</artifactId>
<version>${tomcat.version}</version>
</dependency>
<dependency>
<groupId>org.apache.tomcat</groupId>
<artifactId>tomcat-jasper</artifactId>
<version>${tomcat.version}</version>
</dependency>
<dependency>
<groupId>org.apache.tomcat</groupId>
<artifactId>tomcat-jasper-el</artifactId>
<version>${tomcat.version}</version>
</dependency>
<dependency>
<groupId>org.apache.tomcat</groupId>
<artifactId>tomcat-jsp-api</artifactId>
<version>${tomcat.version}</version>
</dependency>
</dependencies>
<build>
<finalName>eserver</finalName>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<configuration>
<source>8</source>
<target>8</target>
</configuration>
</plugin>
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>appassembler-maven-plugin</artifactId>
<version>2.0.0</version>
<configuration>
<assembleDirectory>target</assembleDirectory>
<programs>
<program>
<mainClass>Main</mainClass>
</program>
</programs>
</configuration>
<executions>
<execution>
<phase>package</phase>
<goals>
<goal>assemble</goal>
</goals>
</execution>
</executions>
</plugin>
</plugins>
</build>
</project>

SRC 文件夹

src/main/
src/main/java/
src/main/resources/
src/main/webapp/
src/main/java/Main.java
src/main/java/net/
src/main/java/net/lim/
src/main/java/net/lim/EServer.java
src/main/java/net/lim/model/
src/main/java/net/lim/services/
src/main/java/net/lim/model/Token.java
src/main/java/net/lim/services/AuthService.java
src/main/java/net/lim/services/RequestService.java
src/main/resources/credentials.json
src/main/webapp/admin.jsp
src/main/webapp/footer.css
src/main/webapp/login.jsp
src/main/webapp/WEB-INF/
src/main/webapp/WEB-INF/web.xml

Procfile： web： sh target/bin/main 控制台输出：

$ heroku local
20:44:16 web.1   |  Error: Could not find or load main class Main
20:44:16 web.1   |  Caused by: java.lang.ClassNotFoundException: Main
[DONE] Killing all processes with signal  SIGINT
20:44:16 web.1   Exited with exit code null

缺少主.class文件正好存在于目标/类的根目录中 这里可能出了什么问题？

Answer 1

找到原因，需要删除

<packaging>war</packaging>

从庞.xml