参考：https://blog.csdn.net/MrZhangBaby/article/details/89636486
"name" : 对应的datax中自定义Transformer名字, 固定格式: dx_groovy
"parameter": Transformer参数
"code" : 需要对同步表进行的数据的逻辑操作(在idea或eclipse中继承Transformer类重写evaluate方法.得到record对象),
code里面的东西不能随便换行，
整个transformer是正确的json.
定义变量用def 进行定义,会自动类型转化
"extraPackage": 不支持引入第三方jar包.只能用自身的.
{
"name":"dx_groovy",
"parameter":{
"code":"Column column = record.getColumn(1);def str = column.asString();def sb = new StringBuffer(str);def header = sb.insert(0,‘AA‘);def strHearder = header.toString();record.setColumn(1, new StringColumn(strHearder));return record",
"extraPackage":[
"import groovy.json.JsonSlurper;"
]
}
}
{ "name":"dx_groovy", "parameter":{ "code":"Column column = record.getColumn(1);def str = column.asString();def sb = new StringBuffer(str);def mid = sb.insert(2,‘A‘);def strMid = mid.toString();record.setColumn(1, new StringColumn(strMid));return record", "extraPackage":[ "import groovy.json.JsonSlurper;" ] } }
原文：https://www.cnblogs.com/muzhongjiang/p/13164556.html