总体描述
引入Oinone的搜索（即Channel模块）后，因错误的配置、缺少配置或者少引入一些Jar包，会出现一些报错。
问题1：启动报类JCTree找不到
具体现象
启动过程可能会出现报错：
java.lang.NoClassDefFoundError: com/sun/tools/javac/tree/JCTree$JCExpression
产生原因
- 引入Channel模块后，启动过程中会扫描Class包找寻Enhance的注解，Pamirs底层有使用到jdk的tools中的类，
com/sun/tools/javac/tree/JCTree$JCExpression - 特定版本的jdk可能会缺少tools.jar导致启动失败
具体报错
at org.springframework.boot.loader.Launcher.launch(Launcher.java:107) [pamirs-venus-boot.jar:na]
at org.springframework.boot.loader.Launcher.launch(Launcher.java:58) [pamirs-venus-boot.jar:na]
at org.springframework.boot.loader.JarLauncher.main(JarLauncher.java:88) [pamirs-venus-boot.jar:na]
Caused by: java.util.concurrent.ExecutionException: java.lang.NoClassDefFoundError: com/sun/tools/javac/tree/JCTree$JCExpression
at java.util.concurrent.CompletableFuture.reportGet(CompletableFuture.java:357) ~[na:1.8.0_381]
at java.util.concurrent.CompletableFuture.get(CompletableFuture.java:1908) ~[na:1.8.0_381]
at pro.shushi.pamirs.boot.common.initial.PamirsBootMainInitial.init(PamirsBootMainInitial.java:66) ~[pamirs-boot-api-4.6.10.jar!/:na]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_381]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_381]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_381]
at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_381]
at org.springframework.context.event.ApplicationListenerMethodAdapter.doInvoke(ApplicationListenerMethodAdapter.java:305) ~[spring-context-5.2.12.RELEASE.jar!/:5.2.12.RELEASE]
... 20 common frames omitted
Caused by: java.lang.NoClassDefFoundError: com/sun/tools/javac/tree/JCTree$JCExpression
at java.lang.Class.forName0(Native Method) ~[na:1.8.0_381]
at java.lang.Class.forName(Class.java:264) ~[na:1.8.0_381]
at pro.shushi.pamirs.meta.util.ClassUtils.getClasses(ClassUtils.java:157) ~[pamirs-meta-model-4.6.8.jar!/:na]
at pro.shushi.pamirs.meta.util.ClassUtils.getClassesByPacks(ClassUtils.java:73) ~[pamirs-meta-model-4.6.8.jar!/:na]
at pro.shushi.pamirs.channel.core.manager.EnhanceModelScanner.enhanceModel(EnhanceModelScanner.java:51) ~[pamirs-channel-core-4.6.15.jar!/:na]
at pro.shushi.pamirs.channel.core.init.ChannelSystemBootAfterInit.init(ChannelSystemBootAfterInit.java:31) 解决办法
- 方式一【推荐】、配置channel的扫描路径
pamirs: channel: packages: - com.pamirs.ic - 方式二、使用Oracle版本的jdk，确保jdk的lib目录，tools.jar有com/sun/tools/javac/tree/JCTree对应的类
问题2：启动报类JsonProvider找不到
具体报错
如果启动报错信息如下：
Caused by: java.lang.NoClassDefFoundError: jakarta/json/spi/JsonProvider
at java.lang.ClassLoader.defineClass1(Native Method) ~[na:1.8.0_181]
at java.lang.ClassLoader.defineClass(ClassLoader.java:763) ~[na:1.8.0_181]
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142) ~[na:1.8.0_181]
at java.net.URLClassLoader.defineClass(URLClassLoader.java:467) ~[na:1.8.0_181]产生原因
- 项目中只引入了
pamirs-channel-core，但未引入elasticsearch相关的包
解决办法
<dependency>
<groupId>org.elasticsearch.client</groupId>
<artifactId>elasticsearch-rest-client</artifactId>
<version>8.4.1</version>
</dependency>
<dependency>
<groupId>jakarta.json</groupId>
<artifactId>jakarta.json-api</artifactId>
<version>2.1.1</version>
</dependency>其他参考：
Oinone引入搜索引擎步骤：https://doc.oinone.top/backend/7235.html
Oinone社区 作者：望闲原创文章，如若转载，请注明出处：https://doc.oinone.top/backend/4513.html
访问Oinone官网:https://www.oinone.top获取数式Oinone低代码应用平台体验
