SAP CPI中基于孙节点过滤父节点的Groovy实现方法

需求说明 #

移除所有不包含localeID="es"且translation="Type 1"的localizedTitle子节点的payload节点，仅保留符合条件的payload（对应示例中的Doc1和Doc4）。

输入XML #

<?xml version="1.0" encoding="UTF-8"?>
<root>
   <payload>
      <title>Doc1</title>
      <localizedTitle>
         <localeID>es</localeID>
         <translation>Type 1</translation>
      </localizedTitle>
      <localizedTitle>
         <localeID>en</localeID>
         <translation>Type 1</translation>
      </localizedTitle>
   </payload>
   <payload>
      <title>Doc3</title>
      <localizedTitle>
         <localeID>es</localeID>
         <translation>Type 3</translation>
      </localizedTitle>
      <localizedTitle>
         <localeID>en</localeID>
         <translation>Type 3</translation>
      </localizedTitle>
   </payload>
   <payload>
      <title>Doc4</title>
      <localizedTitle>
         <localeID>es</localeID>
         <translation>Type 1</translation>
      </localizedTitle>
      <localizedTitle>
         <localeID>en</localeID>
         <translation>Type 1</translation>
      </localizedTitle>
   </payload>
</root>

预期输出XML #

<?xml version="1.0" encoding="UTF-8"?>
<root>
   <payload>
      <title>Doc1</title>
      <localizedTitle>
         <localeID>es</localeID>
         <translation>Type 1</translation>
      </localizedTitle>
      <localizedTitle>
         <localeID>en</localeID>
         <translation>Type 1</translation>
      </localizedTitle>
   </payload>
   <payload>
      <title>Doc4</title>
      <localizedTitle>
         <localeID>es</localeID>
         <translation>Type 1</translation>
      </localizedTitle>
      <localizedTitle>
         <localeID>en</localeID>
         <translation>Type 1</translation>
      </localizedTitle>
   </payload>
</root>

Groovy实现代码 #

import groovy.xml.XmlSlurper
import groovy.xml.XmlUtil

// 获取输入的XML内容
def inputXml = message.getBody(String)

// 解析XML
def rootNode = new XmlSlurper().parseText(inputXml)

// 过滤并移除不符合条件的payload节点
rootNode.payload.findAll { payload ->
    // 检查当前payload下是否存在满足条件的localizedTitle
    !payload.localizedTitle.any { lt ->
        lt.localeID == 'es' && lt.translation == 'Type 1'
    }
}.each { it.replaceNode {} }

// 将处理后的XML转换为字符串并设置回消息体
def outputXml = XmlUtil.serialize(rootNode)
message.setBody(outputXml)

代码说明 #

• 使用XmlSlurper解析XML，适配SAP CPI的轻量XML处理场景
• 通过findAll筛选出不满足条件的payload节点，用replaceNode {}直接移除
• 核心逻辑：判断payload下是否存在符合localeID="es"且translation="Type 1"的localizedTitle子节点，不存在则剔除该payload
• 最后用XmlUtil.serialize生成标准XML格式，替换原消息体完成处理

内容的提问来源于stack exchange，提问作者Jorge Ramírez