ECMAscript 将内容存放到属性名

指定属性名，将流内容存储

var StreamCallback =  Java.type("org.apache.nifi.processor.io.StreamCallback")
var IOUtils = Java.type("org.apache.commons.io.IOUtils");
var StandardCharsets = Java.type("java.nio.charset.StandardCharsets");
var flowFile = session.get();
var text = '';
if(flowFile != null) {
    try {
        flowFile = session.write(flowFile,new StreamCallback(function(inputStream, outputStream) {
            text = IOUtils.toString(inputStream, StandardCharsets.UTF_8);
        }));
        var attrKey = flowFile.getAttribute('存储名称');
        if(attrKey!=""){
            flowFile = session.putAttribute(flowFile, attrKey, text)
            session.transfer(flowFile, REL_SUCCESS)
        }else{
            session.transfer(flowFile, REL_FAILURE)
        }
    } catch(e) {
        session.transfer(flowFile, REL_FAILURE)
    }
}