类型转换和获取XML文件中保存的数据

一.类型转换  

    在上一个博文解析了XML文件之后，由于解析之后得到的数据都是Unicode类型的，在一些场合并不适用，因此，需要将获得的数据进行类型转换，主要是将Unicode转换为int, string和float类型，主要代码如下：

'''
Created on 2014-6-20

@author: sheng
'''

def ConvertUnicodeToInt(InputUnicode):
    """Convert the Unicode to integer"""
    
    result = int(InputUnicode)
    return result




def ConvertUnicodeToString(InputUnicode):
    """Convert the Unicode to string"""
    
    result = str(InputUnicode)
    return result



def ConvertUnicodeToFloat(InputUnicode):
    """Convert the Unicode to InputUnicode"""
    
    result = float(InputUnicode)
    return result


   

二.获取XML文件中保存的数据

    结合了XML解析和类型转换之后，就可以从XML文件中通过名字来直接获得标签保存的数据了，例如整数、字符串和浮点数，以及由这些类型组成的整数列表、字符串列表和浮点数列表。

    具体代码如下：

'''
Created on 2014-6-20

@author: sheng
'''


import xml.dom.minidom
from ConvertTypeXToTypeY import  ConvertUnicodeToInt
from ConvertTypeXToTypeY import  ConvertUnicodeToString
from ConvertTypeXToTypeY import  ConvertUnicodeToFloat


class XMLParser(object):
    '''
    classdocs
    '''


    def __init__(self, FileName):
        '''
        Constructor
        '''
        
        # open the xml file
        self.Dom = xml.dom.minidom.parse(FileName)
        
        # get the root element
        self.RootElement = self.Dom.documentElement
        

        
 
 
        
    def GetInt(self, ElementName):
        """
        Get the integer by name
        """
        
        # get the element list
        ElementList = self.GetData(ElementName)
        
        # get the data
        RawResult = ElementList[0].firstChild.data

        
        # convert the data to integer from Unicode
        Result = ConvertUnicodeToInt(RawResult)
        
        return Result
    
    
    
    def GetIntList(self, ElementName):
        """
        Get the integer list by name
        """
        
        # get the element list
        ElementList = self.GetData(ElementName)
        
        Result = []
        
        # get the data
        for TmpElement in ElementList:
            Tmp = TmpElement.firstChild.data
            Result.append(ConvertUnicodeToInt(Tmp))
            
        return Result
    
    
    
    def GetString(self, ElementName):
        """
        Get the string by name
        """
        
        # get the element list
        ElementList = self.GetData(ElementName)
        
        # get the data
        RawResult = ElementList[0].firstChild.data
        
        # convert the data to integer from Unicode
        Result = ConvertUnicodeToString(RawResult)
        
        return Result 
        
        
        
        
    def GetStringList(self, ElementName):
        """
        Get the float list by name
        """
        
        # get the element list
        ElementList = self.GetData(ElementName)
        
        Result = []
        
        # get the data
        for TmpElement in ElementList:
            Tmp = TmpElement.firstChild.data
            Result.append(ConvertUnicodeToString(Tmp))
            
        return Result
    
    
    
    
    
    def GetFloat(self, ElementName):
        """
        Get the float by name
        """
        
        # get the element list
        ElementList = self.GetData(ElementName)
        
        # get the data
        RawResult = ElementList[0].firstChild.data
        
        # convert the data to integer from Unicode
        Result = ConvertUnicodeToFloat(RawResult)
        
        return Result
    
    
    
    
    
    
    def GetFloatList(self, ElementName):
        """
        Get the string list by name
        """
        
        # get the element list
        ElementList = self.GetData(ElementName)
        
        Result = []
        
        # get the data
        for TmpElement in ElementList:
            Tmp = TmpElement.firstChild.data
            Result.append(ConvertUnicodeToFloat(Tmp))
            
        return Result 
   
   
   
        
    def GetData(self, ElementName):
        """
        Get the data of the element by name
        """
        
        RawResult = self.RootElement.getElementsByTagName(ElementName)
        return RawResult
        
        
        

     至此，XML文件解析和类型转换结束，可以使用上面的代码来获得xml文件中保存的整数、字符串和浮点数，以及这些类型对应的列表了。

     欢迎大家批评指正~

     Enjoy it ~

感谢下面的网友的无私分享：

http://www.cnblogs.com/jenry/archive/2010/05/27/1744861.html