求助：一堆的if else 嵌套
private Map versionCheck(Map mapParam) {
Map msg = new HashMap();
if(!"".equals(PMSUtil.isNull(mapParam.get("IS_INTERNET")))){
String checkVersion =SystemGlobals.getProperty("IS_CHECK");
if("1".equals(checkVersion)){
String versions =SystemGlobals.getProperty("VERSION");
String version =PMSUtil.isNull(mapParam.get("VERSION"));
String taxRegisterNo=PMSUtil.isNull(mapParam.get(""));
String whiteList =SystemGlobals.getProperty("NO_CHECK_TAX_REGISTER_NO");
if((","+whiteList+",").indexOf((","+taxRegisterNo+","))==-1){
if((","+versions+",").indexOf(","+version+",")==-1){//找不到
msg.put("RESULT", "0001");
msg.put("MSG", "FAILD");
}else{
msg.put("RESULT", ""0000"");
}
}else{
msg.put("RESULT", ""0000"");
}
}else{
msg.put("RESULT", ""0000"");
}
}else{
msg.put("RESULT", ""0000"");
}
return msg;
}