java 属性中具有多个值的单个键
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/11557298/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
Single key with multiple values in property
提问by Beginner
I having a property file containing below data :
我有一个包含以下数据的属性文件：
acqurierSystemAlias=CTC0,CTC1,CTC2,CTC3,CTC4,FEXCO,AMEX,DINERS
now in the main program :
现在在主程序中：
String acqurierSA = "CTC1";
String[] acqurierSystemAlias = properties.getProperty("acqurierSystemAlias").split(",");
for(String xyz: acqurierSystemAlias){
if(xyz.equalsIgnoreCase(acqurierSA)) {
System.out.println("true");
} else {
System.out.println("false");
}
}
This is returning me : false, true, false, false, false
这是我回：false，true，false，false，false
My requirement is just to return trueif the acqurierSAis in the propertyfile or else return false, I want only a single value. Currently it is returning me the values in loop.
我的要求是只为了回报true，如果acqurierSA是在propertyfile要不回false，我想只有一个值。目前它正在将循环中的值返回给我。
回答by amicngh
You could make a listform Arrayand then check with contains()
你可以制作一个list表格Array，然后检查contains()
String[] acqurierSystemAlias = properties.getProperty("acqurierSystemAlias").split(",");
List<String> lList=Arrays.asList(acqurierSystemAlias);
boolean found=lList.contains(acqurierSA );
System.out.println(found);
No need to traverse through the array.
无需遍历数组。
回答by assylias
You could use a dedicated variable to do this:
您可以使用专用变量来执行此操作：
boolean found = false;
for(String xyz: acqurierSystemAlias){
if(xyz.equalsIgnoreCase(acqurierSA)){
found = true;
break;
}
}
System.out.println(found);
回答by andy.wen
maybe you need not split the property just
也许你不需要分割财产
System.out.println(("," + properties.getProperty("acqurierSystemAlias") + ",").contains("," +acqurierSA+ "," ));
回答by NPKR
Check this.
检查这个。
String acqurierSA = "CTC1";
String[] acqurierSystemAlias = properties.getProperty("acqurierSystemAlias").split(",");
List<String> strList = Arrays.asList(acqurierSystemAlias);
strList.contains(acqurierSA);
回答by Prashant Chilwant
public String processMountCheck() {
logger.info("Logging an INFO-about Directory exists or not.");
processPropFile();
String[] urls = prop.getProperty("URL").split(",");
List<String> list = Arrays.asList(urls);
String[] folder = prop.getProperty("DIRECTORY").split(",");
List<String> folders = Arrays.asList(folder);
for (int i = 0; i < folders.size(); i++) {
String k = folders.get(i);
File file = new File(k);
if (file.isDirectory()) {
logger.info("Connected to a Directory!"+folders.get(i));
if (file.list().length > 0) {
logger.info("Directory is not empty!");
} else {
logger.info("Directory is empty!");
}
} else {
logger.error("Invalid Directory!");
// System.out.println("This is not a directory");
}
}
return null;
}
