使用java將元素對象寫入文件

Question

我有一個Element類的數據。我想它的值寫入一個文件，但我有麻煩：

< Some process to acquire values into the variable "fieldData" > 

// Prepare file output 
FileWriter fstream = new FileWriter("C:/output.txt"); 
BufferedWriter out = new BufferedWriter(fstream); 

Element field = fieldData.getElement(i); 

out.write(field); // DOESN'T WORK: The method write(int) in the type BufferedWriter is not applicable for the arguments (Element) 
out.write(field.getValueAsString()); // DOESN'T WORK: Cannot convert SEQUENCE to String 

，我應該如何處理這種情況下，有什麼建議？另外，對於我來說，看到（即打印到屏幕上）與對象關聯的可用靜態變量和方法的最佳方式是什麼？謝謝。

更多的代碼片段來幫助調試：

private static final Name SECURITY_DATA = new Name("securityData"); 
private static final Name FIELD_DATA = new Name("fieldData"); 

Element securityDataArray = msg.getElement(SECURITY_DATA); // msg is a Bloomberg desktop API object 
Element securityData = securityDataArray.getValueAsElement(0); 
Element fieldData = securityData.getElement(FIELD_DATA); 
Element field = fieldData.getElement(0) 
out.write(field); // DOESN'T WORK: The method write(int) in the type BufferedWriter is not applicable for the arguments (Element) 
out.write(field.getValueAsString()); // DOESN'T WORK: Cannot convert SEQUENCE to String 

Answer 1

事實證明，這種彭博道具數據結構是囉嗦，至少可以說：

private static final Name SECURITY_DATA = new Name("securityData"); 
private static final Name FIELD_DATA = new Name("fieldData"); 

Element securityDataArray = msg.getElement(SECURITY_DATA); // msg is a Bloomberg desktop API object 
Element securityData = securityDataArray.getValueAsElement(0); 
Element fieldData = securityData.getElement(FIELD_DATA); 
Element field = fieldData.getElement(0); 

/* the above codes were known at the time of the question */ 
/* below is what I was shown by a bloomberg representative */ 

Element bulkElement = field.getValueAsElement(0); 
Element elem = bulkElement.getElement(0); 
out.write(elem.name() + "\t" + elem.getValueAsString() + "\n"); 

哇......我不認爲他們試圖讓它變得容易！我也很好奇，是否有一種方法可以通過讓Java打印出正確的方法來查找數據結構來解決這個問題？

Answer 2

這聽起來像你要打印一個輸入框元素的值？

如果是這樣，那麼嘗試：

out.write(field.getAttribute("value")); 

Answer 3

退房這一個，你的第二個問題： http://download.oracle.com/javase/1.4.2/docs/api/java/lang/Class.html

Answer 4

Element element = msg.GetElement("securityData"); 
for (int i = 0; i < element.NumValues; i++) 
{ 

    Element security = element.GetValueAsElement(i); //ie: DJI INDEX 
    Element fields = security.GetElement("fieldData");//ie: INDX_MEMBERS 

    for (int j = 0; j < fields.NumElements; j++) 
    { 
    Element field = fields.GetElement(j); //a list of members 

    for (int k = 0; k < field.NumValues; k++) 
    { 
     //print field.GetValueAsElement(k); //print members name    
    } 
    } 

}