我使用的数据写入性能以下代码文件如何将新数据附加到属性文件中的现有数据?
public void WritePropertiesFile(String key, String data)
{
Properties configProperty = new Properties();
configProperty.setProperty(key, data);
File file = new File("D:\\Helper.properties");
FileOutputStream fileOut = new FileOutputStream(file,true);
configProperty.store(fileOut, "sample properties");
fileOut.close();
}
I am calling the above method 3 times as follows:
help.WritePropertiesFile("appwrite1","write1");
help.WritePropertiesFile("appwrite2","write2");
help.WritePropertiesFile("appwrite3","write3");
然而,在Helper.properties文件中的数据显示如下:
#sample properties
#Mon Jul 01 15:01:45 IST 2013
appwrite1=write1
#sample properties
#Mon Jul 01 15:01:45 IST 2013
appwrite2=write2
appwrite1=write1
#sample properties
#Mon Jul 01 15:01:45 IST 2013
appwrite3=write3
appwrite2=write2
appwrite1=write1
我想数据追加到现有的数据和不希望重复的数据,如下所示:
appwrite3=write3
appwrite2=write2
appwrite1=write1
请建议该怎么做?
嗨FGE,感谢的答案...我想你提到的代码,它的工作正常。但是当我从其他类文件访问方法时遇到了问题。 我从一个类文件调用上述函数,如下所示: help.WritePropertiesFile(“appwrite1”,“write1”); help.WritePropertiesFile(“appwrite2”,“write2”); help.WritePropertiesFile(“appwrite3”,“write3”); – Vikas
这完全是另一个问题;)你没有显示足够的代码来获得帮助。 – fge
来自其他类文件我打电话如下: help.WritePropertiesFile(“appwrite4”,“write4”); help.WritePropertiesFile(“appwrite5”,“write5”); help.WritePropertiesFile(“appwrite6”,“write6”); 输出显示为 appwrite4 = write4 appwrite5 = write5 appwrite6 = write6 它去除的Class1写入的数据,并与等级2取代它...... _Please让我知道如何存储来自类文件写入的数据? – Vikas