import re
regex = r"^process\.args=spring.*\.xml(?!\r?\nprocess\.script=true\b)"
line = ("xxxx xxx xxx xxx\n"
"process.args=spring.xxxx.xml\n"
"process.script=true\n"
"xxxx xxx xxx xxx\n\n\n"
"xx xx xxx xxx xxx\n"
"xxxx xxx xxx xxx\n"
"process.args=spring.xxxx.xml\n"
"xxxx xxx xxx xxx")
res = re.findall(regex, line, re.MULTILINE)
print(res)
aW1wb3J0IHJlCgpyZWdleCA9IHIiXnByb2Nlc3NcLmFyZ3M9c3ByaW5nLipcLnhtbCg/IVxyP1xucHJvY2Vzc1wuc2NyaXB0PXRydWVcYikiCgpsaW5lID0gKCJ4eHh4IHh4eCB4eHggeHh4XG4iCgkicHJvY2Vzcy5hcmdzPXNwcmluZy54eHh4LnhtbFxuIgoJInByb2Nlc3Muc2NyaXB0PXRydWVcbiIKCSJ4eHh4IHh4eCB4eHggeHh4XG5cblxuIgoJInh4IHh4IHh4eCB4eHggeHh4XG4iCgkieHh4eCB4eHggeHh4IHh4eFxuIgoJInByb2Nlc3MuYXJncz1zcHJpbmcueHh4eC54bWxcbiIKCSJ4eHh4IHh4eCB4eHggeHh4IikKCQpyZXMgPSByZS5maW5kYWxsKHJlZ2V4LCBsaW5lLCByZS5NVUxUSUxJTkUpCnByaW50KHJlcyk=