下载SAPJCO3

SAPJCO3 3.1.2

springboot项目加入本地JAR包依赖

pom.xml

<!-- 引入sapjco3.jar --><dependency><groupId>com.sap.conn.jco</groupId><artifactId>sapjco3</artifactId><version>3.1.2</version><scope>system</scope><systemPath>C:/SAPJCO/sapjco3.jar</systemPath></dependency>...<build><plugins><plugin><groupId>org.springframework.boot</groupId><artifactId>spring-boot-maven-plugin</artifactId><!-- 加入以下代码，否则不会将dependency.scope=system的依赖项打包 --><executions><execution><goals><goal>repackage</goal></goals></execution></executions><configuration><includeSystemScope>true</includeSystemScope></configuration></plugin></plugins></build>

启动报错

Caused by: java.lang.ExceptionInInitializerError:JCo initialization failed with java.lang.ExceptionInInitializerError:Illegal JCo archive "sapjco3-3.1.2.jar".It is not allowed to rename or repackage the original archive "sapjco3.jar".

原因分析

打包后可以看到jar包中对应文件为BOOT-INF\lib\sapjco3-3.1.2.jarsapjco3.0.11之后版本加入对sapjco3.jar包校验，如果文件名不符合启动项目报错

源码：com.sap.conn.jco.rt.DefaultJCoRuntime

...private static String loadJCoLibrary() {...if (!osArch.equals("sapjco3.jar") && !osArch.startsWith("com.sap.conn.jco") && Package.getPackage("org.apache.maven.surefire.booter") == null && Package.getPackage("org.eclipse.jdt.internal.junit.runner") == null) {throw new ExceptionInInitializerError("Illegal JCo archive \"" + osArch + "\". It is not allowed to rename or repackage the original archive \"" + "sapjco3.jar" + "\".");}...}...

解决

打包完成后将jar包对应文件改名为sapjco.jar即可

优化

下面文章中使用了另一种方法打包避免改名问题

springboot maven项目引入并打包本地JAR