SoapUi: read my input request data from txt file

def ts = context.getProperty("#TestSuiteRunner#").currentTestCase.testSuite
def groovyUtil = new com.eviware.soapui.support.GroovyUtils(context)
def filepath = groovyUtil.projectPath

def filename = filepath+"//dinpin.properties"     //if the file is in the same folder with project,or plus subfolder name

def pros = new Properties()
pros.load(new java.io.InputStream(filename))
Enumeration e = props.keys()

while (e.hasMoreElements()){
 key = e.nextElement()
 val = props.get(key)
 ts.setPropertyValue(key,val)
}