当sql脚本文件包含不同数据库实例sql时，遍历读取sql文件再插入时，由于是不同的数据库实例这种方式就不行了，这时就需要程序直接执行sql脚本。
springboot执行sql脚本
java
/**
* 执行sql脚本
* @throws SQLException
*/
private void executeSqlScript(String path) throws IOException {
ResourceDatabasePopulator resourceDatabasePopulator = new ResourceDatabasePopulator();
resourceDatabasePopulator.addScript(new ClassPathResource(path));
// resourceDatabasePopulator.addScript(new FileSystemResource(path));
resourceDatabasePopulator.execute(dataSource);
}注意：文件需要在class path下
本文将文件放入到 src/main/resources/目录下，如下图：
当服务运行时，时正常时报错，报错信息如下：Caused by: java.io.FileNotFoundException.
详细报错信息如下：
java
2024-07-19 13:20:24.360 INFO 19320 --- [nio-8000-exec-1] com.zaxxer.hikari.HikariDataSource : HikariPool-1 - Starting...
2024-07-19 13:20:24.566 INFO 19320 --- [nio-8000-exec-1] com.zaxxer.hikari.HikariDataSource : HikariPool-1 - Start completed.
2024-07-19 13:20:24.577 ERROR 19320 --- [nio-8000-exec-1] a.o.e.h.GlobalControllerExceptionHandler : Cannot read SQL script from class path resource [TOo7PxuIIiRtAb7o0djJWEwYyEeL1TIJ90af0l4wZtWj6XPlOh4ARP7HNE91PKvp.sql]; nested exception is java.io.FileNotFoundException: class path resource [TOo7PxuIIiRtAb7o0djJWEwYyEeL1TIJ90af0l4wZtWj6XPlOh4ARP7HNE91PKvp.sql] cannot be opened because it does not exist
org.springframework.jdbc.datasource.init.CannotReadScriptException: Cannot read SQL script from class path resource [TOo7PxuIIiRtAb7o0djJWEwYyEeL1TIJ90af0l4wZtWj6XPlOh4ARP7HNE91PKvp.sql]; nested exception is java.io.FileNotFoundException: class path resource [TOo7PxuIIiRtAb7o0djJWEwYyEeL1TIJ90af0l4wZtWj6XPlOh4ARP7HNE91PKvp.sql] cannot be opened because it does not exist
at org.springframework.jdbc.datasource.init.ScriptUtils.executeSqlScript(ScriptUtils.java:239) ~[spring-jdbc-5.3.24.jar:5.3.24]
at org.springframework.jdbc.datasource.init.ResourceDatabasePopulator.populate(ResourceDatabasePopulator.java:254) ~[spring-jdbc-5.3.24.jar:5.3.24]
at org.springframework.jdbc.datasource.init.DatabasePopulatorUtils.execute(DatabasePopulatorUtils.java:54) ~[spring-jdbc-5.3.24.jar:5.3.24]
at org.springframework.jdbc.datasource.init.ResourceDatabasePopulator.execute(ResourceDatabasePopulator.java:269) ~[spring-jdbc-5.3.24.jar:5.3.24]
at com.angel.ocean.service.impl.OemAppDataServiceImpl.executeSqlScript(OemAppDataServiceImpl.java:239) ~[classes/:na]
at com.angel.ocean.service.impl.OemAppDataServiceImpl.importSqlFile(OemAppDataServiceImpl.java:130) ~[classes/:na]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_221]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_221]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_221]
at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_221]
at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:344) ~[spring-aop-5.3.24.jar:5.3.24]
at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:208) ~[spring-aop-5.3.24.jar:5.3.24]
at com.sun.proxy.$Proxy73.importSqlFile(Unknown Source) ~[na:na]
at com.angel.ocean.controller.OemAppDataController.importSqlFile(OemAppDataController.java:51) ~[classes/:na]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_221]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_221]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_221]
at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_221]
at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:205) ~[spring-web-5.3.24.jar:5.3.24]
at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:150) ~[spring-web-5.3.24.jar:5.3.24]
at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:117) ~[spring-webmvc-5.3.24.jar:5.3.24]
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:895) ~[spring-webmvc-5.3.24.jar:5.3.24]
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:808) ~[spring-webmvc-5.3.24.jar:5.3.24]
at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:87) ~[spring-webmvc-5.3.24.jar:5.3.24]
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1071) ~[spring-webmvc-5.3.24.jar:5.3.24]
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:964) ~[spring-webmvc-5.3.24.jar:5.3.24]
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1006) [spring-webmvc-5.3.24.jar:5.3.24]
at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:909) [spring-webmvc-5.3.24.jar:5.3.24]
at javax.servlet.http.HttpServlet.service(HttpServlet.java:696) [tomcat-embed-core-9.0.69.jar:4.0.FR]
at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:883) [spring-webmvc-5.3.24.jar:5.3.24]
at javax.servlet.http.HttpServlet.service(HttpServlet.java:779) [tomcat-embed-core-9.0.69.jar:4.0.FR]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:227) [tomcat-embed-core-9.0.69.jar:9.0.69]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) [tomcat-embed-core-9.0.69.jar:9.0.69]
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53) [tomcat-embed-websocket-9.0.69.jar:9.0.69]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) [tomcat-embed-core-9.0.69.jar:9.0.69]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) [tomcat-embed-core-9.0.69.jar:9.0.69]
at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:100) [spring-web-5.3.24.jar:5.3.24]
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:117) [spring-web-5.3.24.jar:5.3.24]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) [tomcat-embed-core-9.0.69.jar:9.0.69]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) [tomcat-embed-core-9.0.69.jar:9.0.69]
at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:93) [spring-web-5.3.24.jar:5.3.24]
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:117) [spring-web-5.3.24.jar:5.3.24]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) [tomcat-embed-core-9.0.69.jar:9.0.69]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) [tomcat-embed-core-9.0.69.jar:9.0.69]
at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201) [spring-web-5.3.24.jar:5.3.24]
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:117) [spring-web-5.3.24.jar:5.3.24]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) [tomcat-embed-core-9.0.69.jar:9.0.69]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) [tomcat-embed-core-9.0.69.jar:9.0.69]
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:177) [tomcat-embed-core-9.0.69.jar:9.0.69]
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:97) [tomcat-embed-core-9.0.69.jar:9.0.69]
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:541) [tomcat-embed-core-9.0.69.jar:9.0.69]
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:135) [tomcat-embed-core-9.0.69.jar:9.0.69]
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) [tomcat-embed-core-9.0.69.jar:9.0.69]
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:78) [tomcat-embed-core-9.0.69.jar:9.0.69]
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:360) [tomcat-embed-core-9.0.69.jar:9.0.69]
at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:399) [tomcat-embed-core-9.0.69.jar:9.0.69]
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65) [tomcat-embed-core-9.0.69.jar:9.0.69]
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:891) [tomcat-embed-core-9.0.69.jar:9.0.69]
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1784) [tomcat-embed-core-9.0.69.jar:9.0.69]
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) [tomcat-embed-core-9.0.69.jar:9.0.69]
at org.apache.tomcat.util.threads.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1191) [tomcat-embed-core-9.0.69.jar:9.0.69]
at org.apache.tomcat.util.threads.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:659) [tomcat-embed-core-9.0.69.jar:9.0.69]
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) [tomcat-embed-core-9.0.69.jar:9.0.69]
at java.lang.Thread.run(Thread.java:748) [na:1.8.0_221]
Caused by: java.io.FileNotFoundException: class path resource [TOo7PxuIIiRtAb7o0djJWEwYyEeL1TIJ90af0l4wZtWj6XPlOh4ARP7HNE91PKvp.sql] cannot be opened because it does not exist
at org.springframework.core.io.ClassPathResource.getInputStream(ClassPathResource.java:199) ~[spring-core-5.3.24.jar:5.3.24]
at org.springframework.core.io.support.EncodedResource.getReader(EncodedResource.java:146) ~[spring-core-5.3.24.jar:5.3.24]
at org.springframework.jdbc.datasource.init.ScriptUtils.readScript(ScriptUtils.java:328) ~[spring-jdbc-5.3.24.jar:5.3.24]
at org.springframework.jdbc.datasource.init.ScriptUtils.executeSqlScript(ScriptUtils.java:236) ~[spring-jdbc-5.3.24.jar:5.3.24]
... 63 common frames omitted如何解决上述报错呢？
不使用classpath相对路径 resourceDatabasePopulator.addScript(new ClassPathResource(path))，使用文件系统的绝对路径：resourceDatabasePopulator.addScript(new FileSystemResource(path)).
如下所示：
java
/**
* 执行sql脚本
* @throws SQLException
*/
private void executeSqlScript(String path) throws IOException {
ResourceDatabasePopulator resourceDatabasePopulator = new ResourceDatabasePopulator();
// resourceDatabasePopulator.addScript(new ClassPathResource(path));
resourceDatabasePopulator.addScript(new FileSystemResource(path));
resourceDatabasePopulator.execute(dataSource);
}注意：这个path是系统的绝对路径