1.从Kettle官网下载源码，本文使用的是pentaho-kettle-8.2.0.0-R

下载地址：https://codeload.github.com/pentaho/pentaho-kettle/zip/8.2.0.0-R

2.打开eclipse,选择一个新的工作空间，然后设置maven的信息，settings.xml使用官方提供的配置文件点击下载。下载可以根据需要设置自己本地仓库的存储路径。

    因为为引入kettle项目源码的时候，会去默认的maven仓库地址下载项目构建所需的依赖，但这些依赖只在Kettle官方的仓库有，所以先配置好kettle的maven仓库地址。

3.引入已存在的maven项目，将解压后的kettle源码引入工作空间，如下图所示选择所有的项目

4.修改pom.xml中swt版本信息，官方的源码在linux系统中开发的，若在windows系统或其他系统中开发时需要更换为相应的swt版本，本文在在windows环境中开发。

工作空间全文搜索“<artifactId>org.eclipse.swt.gtk.linux.x86_64</artifactId>”更改为“ <artifactId>org.eclipse.swt.win32.win32.x86_64</artifactId>”

修改前

修改后

5.配置maven的Lifecycle Mappings
项目导入会存在很多以下错误，需要配置Lifecycle Mappings解决此问题

解决方法如下图：

lifecycle-mapping-metadata.xml文件内容：

<?xml version="1.0" encoding="UTF-8"?>
<lifecycleMappingMetadata>
  <pluginExecutions>
    <pluginExecution>
      <pluginExecutionFilter>
        <groupId>org.codehaus.mojo</groupId>
        <artifactId>buildnumber-maven-plugin</artifactId>
        <goals>
          <goal>create-timestamp</goal>
        </goals>
        <versionRange>[0.0,)</versionRange>
      </pluginExecutionFilter>
      <action>
        <ignore />
      </action>
    </pluginExecution>

    <pluginExecution>
      <pluginExecutionFilter>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-dependency-plugin</artifactId>
        <goals>
          <goal>list</goal>
        </goals>
        <versionRange>[0.0,)</versionRange>
      </pluginExecutionFilter>
      <action>
        <ignore />
      </action>
    </pluginExecution>

    <pluginExecution>
      <pluginExecutionFilter>
        <groupId>org.zeroturnaround</groupId>
        <artifactId>jrebel-maven-plugin</artifactId>
        <goals>
          <goal>generate</goal>
        </goals>
        <versionRange>[0.0,)</versionRange>
      </pluginExecutionFilter>
      <action>
        <ignore />
      </action>
    </pluginExecution>

    <pluginExecution>
      <pluginExecutionFilter>
        <groupId>org.codehaus.mojo</groupId>
        <artifactId>gwt-maven-plugin</artifactId>
        <goals>
          <goal>compile</goal>
        </goals>
        <versionRange>[0.0,)</versionRange>
      </pluginExecutionFilter>
      <action>
        <ignore />
      </action>
    </pluginExecution>

    <pluginExecution>
      <pluginExecutionFilter>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-dependency-plugin</artifactId>
        <goals>
          <goal>copy-dependencies</goal>
          <goal>unpack</goal>
        </goals>
        <versionRange>[0.0,)</versionRange>
      </pluginExecutionFilter>
      <action>
        <ignore />
      </action>
    </pluginExecution>

    <pluginExecution>
      <pluginExecutionFilter>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-remote-resources-plugin</artifactId>
        <goals>
          <goal>bundle</goal>
        </goals>
        <versionRange>[1.5,)</versionRange>
      </pluginExecutionFilter>
      <action>
        <ignore />
      </action>
    </pluginExecution>    
    <pluginExecution>
      <pluginExecutionFilter>
        <groupId>org.codehaus.mojo</groupId>
        <artifactId>build-helper-maven-plugin</artifactId>
        <goals>
          <goal>add-resource</goal>
          <goal>parse-version</goal>
        </goals>
        <versionRange>[1.9.1,)</versionRange>
      </pluginExecutionFilter>
      <action>
        <ignore />
      </action>
    </pluginExecution>
    
    <pluginExecution>
      <pluginExecutionFilter>
        <groupId>org.commonjava.maven.plugins</groupId>
        <artifactId>directory-maven-plugin</artifactId>
        <goals>
          <goal>highest-basedir</goal>
        </goals>
        <versionRange>[0.1,)</versionRange>
      </pluginExecutionFilter>
      <action>
        <ignore />
      </action>
    </pluginExecution>
    
    <pluginExecution>
      <pluginExecutionFilter>
        <groupId>org.pentaho.maven.plugins</groupId>
        <artifactId>license-helper-maven-plugin</artifactId>
        <goals>
          <goal>check-license</goal>
          <goal>bundle</goal>
        </goals>
        <versionRange>[1.5,)</versionRange>
      </pluginExecutionFilter>
      <action>
        <ignore />
      </action>
    </pluginExecution>
    
    <pluginExecution>
      <pluginExecutionFilter>
        <groupId>com.soebes.maven.plugins</groupId>
        <artifactId>iterator-maven-plugin</artifactId>
        <goals>
          <goal>iterator</goal>
          <goal>bundle</goal>
        </goals>
        <versionRange>[0.4,)</versionRange>
      </pluginExecutionFilter>
      <action>
        <ignore />
      </action>
    </pluginExecution>
    
    <pluginExecution>
      <pluginExecutionFilter>
        <groupId>org.apache.karaf.tooling</groupId>
        <artifactId>karaf-maven-plugin</artifactId>
        <goals>
          <goal>features-generate-descriptor</goal>
        </goals>
        <versionRange>[3.0.3,)</versionRange>
      </pluginExecutionFilter>
      <action>
        <ignore />
      </action>
    </pluginExecution>    
    
    <pluginExecution>
      <pluginExecutionFilter>
        <groupId>com.google.code.maven-replacer-plugin</groupId>
        <artifactId>replacer</artifactId>
        <goals>
          <goal>replace</goal>
        </goals>
        <versionRange>[1.5.2,)</versionRange>
      </pluginExecutionFilter>
      <action>
        <ignore />
      </action>
    </pluginExecution>    
        
        
  </pluginExecutions>
</lifecycleMappingMetadata>

6.将pentaho-kettle-8.2.0.0-R\assemblies\static\src\main\resources\ui下的文件复制一下粘贴到pentaho-kettle-8.2.0.0-R\ui\src\main\resources\ui文件夹下

7.执行maven clean install,然后运行org.pentaho.di.ui.spoon.Spoon

调整完毕的源码代码地址：https://gitee.com/gq2010/pentaho-kettle-8.2.0.0-R