📚第一章 前言

在前面对data-integration做了一些简单了解，从部署到应用，今天尝试把后端运行作业代码拎出来，去真正运行一下，只有实操之后才会有更深刻的认识，有些看着简单的功能，实操过程中会遇到很多问题，这个时候你的想法也会发生改变，所以很多时候为什么开发人员痛恨做产品的同事，因为嘴上说的简单，真正去做一下，你自己感受一下，就知道了！

• 基于Kettle开发的web版数据集成开源工具(data-integration)-部署篇
• 基于Kettle开发的web版数据集成开源工具(data-integration)-介绍篇
• 基于Kettle开发的web版数据集成开源工具(data-integration)-应用篇

data-integration可以理解为Kettle的web版本，详情可参照上面的文章，这里直接从代码层面开始

📚第二章 demo源码

直接在我之前个人项目上进行的韧小钊(纯个人项目，整理或者更新全靠一时兴起，如果对你有用，挺好，没用请PASS），现在想法就是后端实现运行作业的功能，至于保存作业，都是前端传给后台的，后台存的就是JSON串，所以后端改动应该不大，这里就是尝试先提取后端运行作业代码，直接运行前端传参，看能否成功。

📗pom.xml引入Kettle引擎核心文件

引入之后，启动项目报jar包冲突，则在下面文件中进行exclusion配置排除

<!-- Kettle核心包 20240106 by rxz-->
<dependency><groupId>pentaho-kettle</groupId><artifactId>kettle-engine</artifactId><version>${kettle.version}</version><exclusions><exclusion><artifactId>servlet-api</artifactId><groupId>javax.servlet</groupId></exclusion></exclusions>
</dependency>
<dependency><groupId>pentaho-kettle</groupId><artifactId>kettle-core</artifactId><version>${kettle.version}</version><exclusions><exclusion><artifactId>servlet-api</artifactId><groupId>javax.servlet</groupId></exclusion></exclusions>
</dependency>

📗java源码

📕 controller

package com.renxiaozhao.api.controller;import com.renxiaozhao.common.Result;
import com.renxiaozhao.service.inf.PdiUseDemoService;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;/*** kettle/pdi使用样例-控制层** @author 韧小钊*/
@RestController
@RequestMapping("/kettle")
@Api(tags = "KETTLE-PDI")
@Slf4j
public class PdiUseDemoController {/*** 服务对象*/@Autowiredprivate PdiUseDemoService pdiUseDemoService;@PostMapping("/run")@ApiOperation(value = "kettle作业运行", notes = "kettle作业运行")public Result<Void> executeJob(@RequestParam String jobJson) throws Exception {pdiUseDemoService.executeJob(jobJson);return Result.success();}}

📕 service

这里就是对应基于Kettle开发的web版数据集成开源工具(data-integration)-应用篇中的后台服务流程章节的ProjectExecutorController.executeById，目的是研究Kettle引擎的具体使用，所以这里是去掉了各种封装，直接前端传参（作业JSON串），后端直接执行

package com.renxiaozhao.service.inf;import com.baomidou.mybatisplus.extension.service.IService;
import com.renxiaozhao.bean.entity.SportEntity;public interface PdiUseDemoService extends IService<SportEntity> {
//直接复制的原来代码，有些实体类暂时用不到，请先忽略void executeJob(String jobJson) throws Exception;
}

package com.renxiaozhao.service.impl;import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.renxiaozhao.bean.entity.SportEntity;
import com.renxiaozhao.dao.mapper.SportMapper;
import com.renxiaozhao.service.inf.PdiUseDemoService;
import com.renxiaozhao.service.util.JSONLinkedObject;
import com.renxiaozhao.service.util.XML;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.io.FileUtils;
import org.apache.commons.lang.StringEscapeUtils;
import org.pentaho.di.core.exception.KettleMissingPluginsException;
import org.pentaho.di.core.exception.KettleXMLException;
import org.pentaho.di.core.logging.LogLevel;
import org.pentaho.di.core.logging.LoggingObjectType;
import org.pentaho.di.core.logging.SimpleLoggingObject;
import org.pentaho.di.core.variables.Variables;
import org.pentaho.di.core.xml.XMLHandler;
import org.pentaho.di.trans.Trans;
import org.pentaho.di.trans.TransAdapter;
import org.pentaho.di.trans.TransExecutionConfiguration;
import org.pentaho.di.trans.TransMeta;
import org.springframework.stereotype.Service;
import org.w3c.dom.Document;import java.io.File;
import java.io.IOException;
import java.util.HashMap;
import java.util.UUID;@Slf4j
@Service
public class PdiUseDemoServiceImpl extends ServiceImpl<SportMapper,SportEntity> implements PdiUseDemoService {@Overridepublic void executeJob(String jobJson) throws Exception {execute(jobJson);}private void execute(String jobJson) throws Exception {// 构建TransMeta 对象TransMeta transMeta = buildTransMeta(jobJson);TransExecutionConfiguration executionConfiguration = new TransExecutionConfiguration();// 设置默认值以便运行配置可以正确设置executionConfiguration.setExecutingLocally(true);executionConfiguration.setExecutingRemotely(false);executionConfiguration.setExecutingClustered(false);// 不启用安全模式executionConfiguration.setSafeModeEnabled(true);executionConfiguration.getUsedVariables(transMeta);executionConfiguration.setLogLevel(LogLevel.DEBUG);// 默认设置本地引擎执行executionConfiguration.setRunConfiguration("Pentaho local");//设置命令参数executionConfiguration.setVariables(new HashMap<>());//  创建transTrans trans = new Trans(transMeta);String spoonLogObjectId = UUID.randomUUID().toString();SimpleLoggingObject spoonLoggingObject = new SimpleLoggingObject(Thread.currentThread().getName() + "-" + Thread.currentThread().getId(), LoggingObjectType.SPOON, null);spoonLoggingObject.setContainerObjectId(spoonLogObjectId);spoonLoggingObject.setLogLevel(executionConfiguration.getLogLevel());trans.setParent(spoonLoggingObject);trans.setLogLevel(executionConfiguration.getLogLevel());trans.setReplayDate(executionConfiguration.getReplayDate());trans.setRepository(executionConfiguration.getRepository());trans.setMonitored(false);// 启动转换trans.addTransListener(new TransAdapter() {@Overridepublic void transFinished(Trans trans) {log.info("项目执行完成");}});trans.startThreads();}public TransMeta buildTransMeta(String jobJson) throws IOException, KettleXMLException, KettleMissingPluginsException {Document document;//json转xmlif (!jobJson.startsWith("<?xml")) {// json转xmljobJson = StringEscapeUtils.unescapeXml(jobJson);jobJson = "<?xml version=\"1.0\" encoding=\"UTF-8\"?>" + XML.toString(new JSONLinkedObject(jobJson));log.info("json转换成xml，转换后的xml:{}", jobJson);}// 写到临时目录File outFile = new File("D:\\tmp\\test", "test.xml");FileUtils.writeStringToFile(outFile, jobJson);// 加载xmldocument = XMLHandler.loadXMLString(jobJson);TransMeta transMeta = new TransMeta();transMeta.loadXML(document.getDocumentElement(), outFile.getPath(), null, null, true, new Variables(),(message, rememberText, rememberPropertyName) -> {// Yes means: overwritereturn true;});if (transMeta.hasMissingPlugins()) {log.info("【{}】缺少执行插件。", jobJson);}return transMeta;}
}

📕 其它

代码已上传

📕 maven settings.xml

<?xml version="1.0" encoding="UTF-8"?>
<settings xmlns="http://maven.apache.org/SETTINGS/1.2.0"xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xsi:schemaLocation="http://maven.apache.org/SETTINGS/1.2.0 https://maven.apache.org/xsd/settings-1.2.0.xsd"><localRepository>D:\soft\apache-maven-3.8.5\apache-maven-3.8.5\repository</localRepository><pluginGroups></pluginGroups><proxies></proxies><servers></servers><mirrors><mirror><id>pentaho-public</id><name>Pentaho Public Mirror</name><url>https://repo.orl.eng.hitachivantara.com/artifactory/pnt-mvn/</url><mirrorOf>*</mirrorOf></mirror><mirror><id>aliyunmaven</id><mirrorOf>*</mirrorOf><name>阿里云公共仓库</name><url>https://maven.aliyun.com/repository/public</url></mirror></mirrors><profiles></profiles></settings>

📗测试

启动服务，通过swagger测试

📕 测试文件

传参对应的就是dp_portal_project_file的project_file，详见基于Kettle开发的web版数据集成开源工具(data-integration)-应用篇

测试文件参考如下（直接使用的话，记得修改数据库信息）：

{"transformation": {"attributes": "","connection": [{"access": "Native","attributes": {"attribute": [{"attribute": "Y","code": "SUPPORTS_BOOLEAN_DATA_TYPE"},{"attribute": "Y","code": "SUPPORTS_TIMESTAMP_DATA_TYPE"},{"attribute": "N","code": "QUOTE_ALL_FIELDS"},{"attribute": "N","code": "FORCE_IDENTIFIERS_TO_LOWERCASE"},{"attribute": "N","code": "FORCE_IDENTIFIERS_TO_UPPERCASE"},{"attribute": "Y","code": "PRESERVE_RESERVED_WORD_CASE"},{"attribute": "N","code": "STRICT_NUMBER_38_INTERPRETATION"},{"attribute": "","code": "PREFERRED_SCHEMA_NAME"}]},"dataSourceId": "e2be98ed-9077-4802-8795-df45acb7b033","dataSourceName": "dataintegration_db","data_tablespace": "","database": "dataintegration_db","dsName": "dataintegration_db","index_tablespace": "","name": "e2be98ed-9077-4802-8795-df45acb7b033","password": "Encrypted 2be98afc86ae49d94a40dab508cc2fd89","port": "3306","server": "192.168.17.10","servername": "","type": "MYSQL","username": "stelladp"}],"info": {"capture_step_performance": "N","clusterschemas": "","created_date": "2020/02/05 13:34:55.102","created_user": "037de45a-e2ad-4d0a-943c-455db05161f4","dependencies": "","description": "","directory": "/home/admin","extended_description": "","feedback_shown": "Y","feedback_size": 50000,"is_key_private": "N","key_for_session_key": "","log": "","maxdate": {"connection": "","field": "","maxdiff": 0,"offset": 0,"table": ""},"modified_date": "2020/02/19 17:08:25.150","modified_user": "admin","name": "执行SQL","parameters": {"parameter": []},"partitionschemas": "","shared_objects_file": "","size_rowset": 10000,"slaveservers": "","sleep_time_empty": 50,"sleep_time_full": 50,"step_performance_capturing_delay": 1000,"step_performance_capturing_size_limit": 100,"trans_type": "Normal","trans_version": "","unique_connections": "N","using_thread_priorities": "Y"},"nodeList": {"flowInfo": {"Id": "fdf50d66dc7d","Name": "我的流程","Remark": ""},"lineList": [],"nodeList": [{"copy": 0,"dataQuerySql": "","dataSourceId": "","datasourceId": "","errors": 0,"icon": "iconfont icon-kongjian1","id": "ExecSQL6925c0883a9b","label": "执行SQL脚本","left": "341px","linesInput": 0,"linesOutput": 0,"linesRead": 0,"linesRejected": 0,"linesUpdated": 0,"linesWritten": 0,"pluginId": "ExecSQL","pluginOutput": "Y","priority": "-","projectError": 0,"projectId": "","projectName": "","seconPluginType": "scripts","seconds": 0,"speed": 0,"status": false,"statusDescription": "","stepExecutionStatu": "","stepExecutionStatus": "","stepMetaExecutionStatus": null,"stepName": "","stepSql": "","top": "212px"}],"statusListen": []},"notepads": "","order": {"hop": []},"slave-step-copy-partition-distribution": "","slave_transformation": "N","step": [{"BindString": "","Connectpool": false,"Excute_sql": "","GUI": {"draw": "Y","xloc": "160","yloc": "224"},"arguments": {"argument": []},"attributes": [],"bool": true,"cluster": false,"cluster_schema": [],"connecName": "","connect_size": "","connection": "e2be98ed-9077-4802-8795-df45acb7b033","copies": "1","custom_distribution": [],"defalut_mode": "","delete_field": "","descripe": "The default catalog of connections created by this pool.","description": [],"distribute": "Y","execute_each_row": "N","fields": {"field": []},"free_space": "","header": "N","identifier": false,"identifier_captial": false,"identifier_lowercase": false,"initFlag": true,"insert_field": "","name": "执行SQL脚本","noempty": "N","oldStepName": "执行SQL脚本","outFields": [],"partitioning": {"method": "none","schema_name": []},"preserve_case": true,"quoteString": "N","read_field": "","remotesteps": {"input": "\n      ","output": "\n      "},"replace_variables": "N","set_params": false,"single_statement": "Y","sql": "select count(1) from dp_portal_role","stoponempty": "N","strict_number": false,"time_stamp": true,"type": "ExecSQL","update_field": ""}],"step_error_handling": {"error": []}}
}

📕 测试结果

报错了…😔详见问题二

⁉️问题记录

❓问题一：jar包冲突 - An attempt was made to call the method javax.servlet.ServletContext.setInitParameter(Ljava/lang/String;Ljava/lang/String;)Z but it does not exist. Its class, javax.servlet.ServletContext, is available from the following locations:

java.lang.BootstrapMethodError: java.lang.NoSuchMethodError: javax.servlet.ServletContext.setInitParameter(Ljava/lang/String;Ljava/lang/String;)Zat org.springframework.boot.web.servlet.server.AbstractServletWebServerFactory.lambda$mergeInitializers$0(AbstractServletWebServerFactory.java:253)at org.springframework.boot.web.embedded.jetty.ServletContextInitializerConfiguration.callInitializers(ServletContextInitializerConfiguration.java:66)at org.springframework.boot.web.embedded.jetty.ServletContextInitializerConfiguration.configure(ServletContextInitializerConfiguration.java:55)at org.eclipse.jetty.webapp.WebAppContext.configure(WebAppContext.java:517)at org.eclipse.jetty.webapp.WebAppContext.startContext(WebAppContext.java:1454)at org.eclipse.jetty.server.handler.ContextHandler.doStart(ContextHandler.java:852)at org.eclipse.jetty.servlet.ServletContextHandler.doStart(ServletContextHandler.java:278)at org.eclipse.jetty.webapp.WebAppContext.doStart(WebAppContext.java:545)at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:68)at org.eclipse.jetty.util.component.ContainerLifeCycle.start(ContainerLifeCycle.java:138)at org.eclipse.jetty.server.Server.start(Server.java:415)at org.eclipse.jetty.util.component.ContainerLifeCycle.doStart(ContainerLifeCycle.java:108)at org.eclipse.jetty.server.handler.AbstractHandler.doStart(AbstractHandler.java:113)at org.eclipse.jetty.server.Server.doStart(Server.java:382)at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:68)at org.springframework.boot.web.embedded.jetty.JettyWebServer.initialize(JettyWebServer.java:108)at org.springframework.boot.web.embedded.jetty.JettyWebServer.<init>(JettyWebServer.java:86)at org.springframework.boot.web.embedded.jetty.JettyServletWebServerFactory.getJettyWebServer(JettyServletWebServerFactory.java:410)at org.springframework.boot.web.embedded.jetty.JettyServletWebServerFactory.getWebServer(JettyServletWebServerFactory.java:153)at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.createWebServer(ServletWebServerApplicationContext.java:181)at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.onRefresh(ServletWebServerApplicationContext.java:154)at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:543)at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:142)at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:775)at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397)at org.springframework.boot.SpringApplication.run(SpringApplication.java:316)at org.springframework.boot.SpringApplication.run(SpringApplication.java:1260)at org.springframework.boot.SpringApplication.run(SpringApplication.java:1248)at com.renxiaozhao.api.ApiApplicationServer.main(ApiApplicationServer.java:21)
Caused by: java.lang.NoSuchMethodError: javax.servlet.ServletContext.setInitParameter(Ljava/lang/String;Ljava/lang/String;)Zat java.lang.invoke.MethodHandleNatives.resolve(Native Method)at java.lang.invoke.MemberName$Factory.resolve(MemberName.java:975)at java.lang.invoke.MemberName$Factory.resolveOrFail(MemberName.java:1000)at java.lang.invoke.MethodHandles$Lookup.resolveOrFail(MethodHandles.java:1394)at java.lang.invoke.MethodHandles$Lookup.linkMethodHandleConstant(MethodHandles.java:1750)at java.lang.invoke.MethodHandleNatives.linkMethodHandleConstant(MethodHandleNatives.java:477)... 29 common frames omitted
2024-01-06 13:40:50.233 [main] INFO  org.eclipse.jetty.server.AbstractConnector -Started ServerConnector@697a0948{HTTP/1.1,[http/1.1]}{0.0.0.0:9080}
2024-01-06 13:40:50.242 [main] INFO  org.eclipse.jetty.server.AbstractConnector -Stopped ServerConnector@697a0948{HTTP/1.1,[http/1.1]}{0.0.0.0:9080}
2024-01-06 13:40:50.243 [main] INFO  org.eclipse.jetty.server.handler.ContextHandler -Stopped o.s.b.w.e.j.JettyEmbeddedWebAppContext@521441d5{application,/renxiaozhao,[file:///C:/Users/lenovo/AppData/Local/Temp/jetty-docbase.1734690716899826200.9080/, jar:file:/D:/soft/apache-maven-3.8.5/apache-maven-3.8.5/repository/io/springfox/springfox-swagger-ui/2.9.2/springfox-swagger-ui-2.9.2.jar!/META-INF/resources, jar:file:/D:/soft/apache-maven-3.8.5/apache-maven-3.8.5/repository/com/github/xiaoymin/knife4j-spring-ui/2.0.8/knife4j-spring-ui-2.0.8.jar!/META-INF/resources],UNAVAILABLE}
2024-01-06 13:40:50.247 [main] WARN  o.s.b.w.s.c.AnnotationConfigServletWebServerApplicationContext -Exception encountered during context initialization - cancelling refresh attempt: org.springframework.context.ApplicationContextException: Unable to start web server; nested exception is org.springframework.boot.web.server.WebServerException: Unable to start embedded Jetty web server
2024-01-06 13:40:50.261 [main] INFO  o.s.b.a.l.ConditionEvaluationReportLoggingListener -Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled.
2024-01-06 13:40:50.287 [main] ERROR o.s.b.diagnostics.LoggingFailureAnalysisReporter -***************************
APPLICATION FAILED TO START
***************************Description:An attempt was made to call the method javax.servlet.ServletContext.setInitParameter(Ljava/lang/String;Ljava/lang/String;)Z but it does not exist. Its class, javax.servlet.ServletContext, is available from the following locations:jar:file:/D:/soft/apache-maven-3.8.5/apache-maven-3.8.5/repository/javax/servlet/servlet-api/2.4/servlet-api-2.4.jar!/javax/servlet/ServletContext.classjar:file:/D:/soft/apache-maven-3.8.5/apache-maven-3.8.5/repository/javax/servlet/javax.servlet-api/4.0.1/javax.servlet-api-4.0.1.jar!/javax/servlet/ServletContext.classIt was loaded from the following location:file:/D:/soft/apache-maven-3.8.5/apache-maven-3.8.5/repository/javax/servlet/servlet-api/2.4/servlet-api-2.4.jarAction:Correct the classpath of your application so that it contains a single, compatible version of javax.servlet.ServletContextDisconnected from the target VM, address: '127.0.0.1:50771', transport: 'socket'Process finished with exit code 1

❗解决方式一：Kettle排除掉冲突jar（因为没引入Kettle之前是没问题的）

<kettle.version>9.2.0.0-290</kettle.version>
<dependency><groupId>pentaho-kettle</groupId><artifactId>kettle-engine</artifactId><version>${kettle.version}</version><exclusions><exclusion><artifactId>servlet-api</artifactId><groupId>javax.servlet</groupId></exclusion></exclusions>
</dependency><dependency><groupId>pentaho-kettle</groupId><artifactId>kettle-core</artifactId><version>${kettle.version}</version><exclusions><exclusion><artifactId>servlet-api</artifactId><groupId>javax.servlet</groupId></exclusion></exclusions>
</dependency>

❕拓展：通过Maven Helper插件排除冲突jar包

使用IDEA工具，安装Maven Helper插件，进行冲突jar包排查，步骤如下：

• 安装插件
  
• 安装完成之后，打开pom.xml文件，可以看到Dependency Analyzer
  
• 点击Dependency Analyzer进行分析
  
  
  
• 尽量定位修改的位置进行排查（找到修改的pom.xml进行定位）
  
  冲突嘛（排除哪一方都行，根据报错排除对应的jar包，不行再试另一个jar包）
  
• 直接点击Exclude，帮你自动生成排除配置
  
  

❓问题二：Database type not found!…database type with plugin id [Oracle] couldn't be found!

2024-01-05 16:54:41.190 [qtp1963906615-73] WARN  org.eclipse.jetty.server.HttpChannel -/renxiaozhao/kettle/run
org.springframework.web.util.NestedServletException: Request processing failed; nested exception is org.pentaho.di.core.exception.KettleXMLException: 
错误从XML文件读取转换
Database type not found!at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1013)at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:908)at javax.servlet.http.HttpServlet.service(HttpServlet.java:665)at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:882)at javax.servlet.http.HttpServlet.service(HttpServlet.java:750)at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:867)at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1623)at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:99)at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1610)at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:92)at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1610)at org.springframework.web.filter.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:93)at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1610)at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:200)at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1610)at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:540)at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:146)at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:548)at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:132)at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:257)at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:1588)at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:255)at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1345)at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:203)at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:480)at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:1557)at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:201)at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1247)at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:144)at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:132)at org.eclipse.jetty.server.Server.handle(Server.java:502)at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:364)at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:260)at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:305)at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:103)at org.eclipse.jetty.io.ChannelEndPoint$2.run(ChannelEndPoint.java:118)at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.runTask(EatWhatYouKill.java:333)at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.doProduce(EatWhatYouKill.java:310)at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.tryProduce(EatWhatYouKill.java:168)at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.run(EatWhatYouKill.java:126)at org.eclipse.jetty.util.thread.ReservedThreadExecutor$ReservedThread.run(ReservedThreadExecutor.java:366)at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:765)at org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:683)at java.lang.Thread.run(Thread.java:748)
Caused by: org.pentaho.di.core.exception.KettleXMLException: 
错误从XML文件读取转换
Database type not found!at org.pentaho.di.trans.TransMeta.loadXML(TransMeta.java:3460)at com.renxiaozhao.service.impl.PdiUseDemoServiceImpl.buildTransMeta(PdiUseDemoServiceImpl.java:96)at com.renxiaozhao.service.impl.PdiUseDemoServiceImpl.execute(PdiUseDemoServiceImpl.java:41)at com.renxiaozhao.service.impl.PdiUseDemoServiceImpl.executeJob(PdiUseDemoServiceImpl.java:37)at com.renxiaozhao.service.impl.PdiUseDemoServiceImpl$$FastClassBySpringCGLIB$$56121f70.invoke(<generated>)at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:218)at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:684)at com.renxiaozhao.service.impl.PdiUseDemoServiceImpl$$EnhancerBySpringCGLIB$$b8de3a8b.executeJob(<generated>)at com.renxiaozhao.api.controller.PdiUseDemoController.executeJob(PdiUseDemoController.java:33)at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)at java.lang.reflect.Method.invoke(Method.java:498)at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:189)at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:138)at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:102)at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:895)at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:800)at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:87)at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1038)at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:942)at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1005)... 47 common frames omitted
Caused by: java.lang.RuntimeException: Database type not found!at org.pentaho.di.core.database.DatabaseMeta.setValues(DatabaseMeta.java:642)at org.pentaho.di.core.database.DatabaseMeta.setDefault(DatabaseMeta.java:525)at org.pentaho.di.core.database.DatabaseMeta.<init>(DatabaseMeta.java:516)at org.pentaho.di.core.database.DatabaseMeta.<init>(DatabaseMeta.java:986)at org.pentaho.di.trans.TransMeta.loadXML(TransMeta.java:3030)... 68 common frames omitted
Caused by: org.pentaho.di.core.exception.KettleDatabaseException: 
database type with plugin id [Oracle] couldn't be found!at org.pentaho.di.core.database.DatabaseMeta.findDatabaseInterface(DatabaseMeta.java:592)at org.pentaho.di.core.database.DatabaseMeta.getDatabaseInterface(DatabaseMeta.java:566)at org.pentaho.di.core.database.DatabaseMeta.setValues(DatabaseMeta.java:640)... 72 common frames omitted

❗解决思路一：该插件类型不存在，需要手动制作

检查对应配置文件kettle-database-types.xml，发现配置是存在的，所以这里报错不是类型不存在所致

  <database-type id="ORACLE"><description>Oracle</description><classname>org.pentaho.di.core.database.OracleDatabaseMeta</classname></database-type>   

❗解决思路二：确保json转化的xml文件正确

❗解决思路三：正确加载kettle

现在怀疑就是kettle没有正确加载，但是如何排查，还是一头雾水，有知道的大佬欢迎告知，接下来再排查半小时，没结果就放弃了，大周六的，不要太卷！

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问题解决已更新：Kettle Local引擎使用记录（二）：问题记录及解决