Generate several war for spring boot application - maven

Question

It seems that spring boot will repackage the package generated by maven package phase, and then repacke the war to make it executable.
Now I want to genrate multiple wars for different environments by a single maven command, I tried to use maven-assembly-plugin:
1 unzip the war generated by `spring-boot-maven` plugin to a directory
2 Assembly with the files in the directory, and add some other filtered resources
3 create the war
Check this post:generate multiple artifacts in maven
While it works, and I got multiple wars, but none of them can be executeable by java -jar xx.war. It seems that the classes are corrupted.
So I wonder if there is an alternative solution?
update my pom.xml:
<project>
<modelVersion>4.0.0</modelVersion>
<packaging>war</packaging>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.3.1.RELEASE</version>
</parent>
<build>
<plugins>
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>build-helper-maven-plugin</artifactId>
<executions>
<execution>
<phase>generate-sources</phase>
<goals>
<goal>add-source</goal>
</goals>
<configuration>
<sources>
<source>src/main/as-common</source>
<source>src/main/as-server</source>
<source>src/main/as-app</source>
</sources>
</configuration>
</execution>
</executions>
</plugin>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
<profiles>
<profile>
<id>release</id>
<build>
<plugins>
<!-- unzip the contents of the war(executeable) generated by spring-boot to a certain directory -->
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-antrun-plugin</artifactId>
<version>1.8</version>
<executions>
<execution>
<id>extract_spring_war</id>
<phase>package</phase>
<configuration>
<target>
<echo message="extract war generated by spring-boot-maven-plugin"/>
<delete dir="${basedir}/target/${project.build.finalName}-spring" includeemptydirs="true"/>
<unzip src="${basedir}/target/${project.build.finalName}.war" dest="${basedir}/target/${project.build.finalName}-spring/"/>
</target>
</configuration>
<goals>
<goal>run</goal>
</goals>
</execution>
</executions>
</plugin>
<plugin>
<groupId>com.soebes.maven.plugins</groupId>
<artifactId>iterator-maven-plugin</artifactId>
<version>0.3</version>
<executions>
<execution>
<phase>package</phase>
<goals>
<goal>iterator</goal>
</goals>
<configuration>
<items>
<item>test</item>
<item>dep1</item>
<item>dep2</item>
</items>
<pluginExecutors>
<pluginExecutor>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-assembly-plugin</artifactId>
<version>2.6</version>
</plugin>
<goal>single</goal>
<configuration>
<archive>
<manifest>
<mainClass>org.springframework.boot.loader.WarLauncher</mainClass>
</manifest>
</archive>
<descriptors>
<descriptor>src/main/assembly/assembly.xml</descriptor>
</descriptors>
</configuration>
</pluginExecutor>
</pluginExecutors>
</configuration>
</execution>
</executions>
</plugin>
</plugins>
</build>
</profile>
</profiles>
</project>
assmbly.xml:
<assembly>
<id>${item}</id>
<formats>
<format>war</format>
</formats>
<includeBaseDirectory>false</includeBaseDirectory>
<fileSets>
<!-- file from the unpacked contents -->
<fileSet>
<directory>target/${project.build.finalName}-spring</directory>
<outputDirectory>/</outputDirectory>
<includes>
<include>**/*</include>
</includes>
<filtered>true</filtered>
</fileSet>
<!-- add environment awared resources -->
<fileSet>
<outputDirectory>/WEB-INF/classes</outputDirectory>
<directory>${basedir}/src/main/custom/</directory>
<includes>
<include>${item}.properties</include>
</includes>
</fileSet>
</fileSets>
</assembly>
Update:
At first I got the error:
No main class detected
Then I add the following for maven-assembly-plugin,
<archive>
<manifest>
<mainClass>org.springframework.boot.loader.WarLauncher</mainClass>
</manifest>
</archive>
After that I repackage the wars, and I got error when I ran:
Error: A JNI error has occurred, please check your installation and try again
Exception in thread "main" java.lang.ClassFormatError: Incompatible magic value 4022320623 in class file org/springframework/boot/loader/WarLauncher

Answer 1

The class files are being corrupted when you're repackaging the war file. I suspect that's because you're filtering all of the files:
<fileSet>
<directory>target/${project.build.finalName}-spring</directory>
<outputDirectory>/</outputDirectory>
<includes>
<include>**/*</include>
</includes>
<filtered>true</filtered>
</fileSet>
You don't want to filter binary files as they may happen to contain data that looks like a ${} placeholder. You should update the assembly to avoid applying the filtering to class files. The simplest way to do that would be to disable filtering entirely:
<fileSet>
<directory>target/${project.build.finalName}-spring</directory>
<outputDirectory>/</outputDirectory>
<includes>
<include>**/*</include>
</includes>
<filtered>false</filtered>
</fileSet>
If you need filtering for text files, you should use two fileSets. One that includes the binary files and disables filtering, and one that includes the text files and enables filtering.