在xml中編輯更多的名字

Question

我正在處理xml我已經使用了sax解析器我必須從指定格式解析xml中的數據現在的問題是nameattribute具有名稱的位置我必須顯示它的一半直到現在它顯示整個名稱。我如何從XML中刪除選擇性字符。由於我是新來的XML和Java我有點困惑。 我的代碼如下所示：

import java.util.ArrayList; 
import java.util.List; 
import org.xml.sax.Attributes; 
import org.xml.sax.SAXException; 
import org.xml.sax.helpers.DefaultHandler; 

public class XmlBack extends DefaultHandler { 

    public void startElement(String uri, String localName, String qName, 
      Attributes attributes) throws SAXException { 

     if (qName.equalsIgnoreCase("VarGroup")) { 
      varGroupVariables = new ArrayList<VarGroupVariable>(); 
     }else if (qName.equalsIgnoreCase("Variable")) { 
      varGroupVariable = new VarGroupVariable(); 
      nameAttribute = attributes.getValue("Name"); 
      varGroupVariable.setName(nameAttribute); 
     }else if (qName.equalsIgnoreCase("TYP")) { 
      btype = true; 
     }else if (qName.equalsIgnoreCase("VALUE")) { 
      bvalue = true; 
     }else if (qName.equalsIgnoreCase("Mold.sv_")) { 
      bmold = true; 
     }else if (qName.equalsIgnoreCase("Core1.sv_")) { 
      bcore = true; 
     } 

    } 

    public void characters(char ch[], int start, int length) 
      throws SAXException { 
     String vtype = null; 

     if (bcore) { 

      bcore = false; 
     } 
     if (bmold) { 
      bmold = true; 
     } 
     if (btype) { 
      vtype = new String(ch, start, length); 
      varGroupVariable.setType(vtype); 
      varGroupVariable.setSerial(no++); 
      btype = false; 
     } 

     Double value = null; 
     if (bvalue) { 
      String vvalue = new String(ch, start, length); 
      try { 
       value = Double.valueOf(vvalue); 
      } catch (NumberFormatException ne) { 
       value = 0d; 
      } 
      varGroupVariable.setValue(value); 
      bvalue = false; 
     } 
    } 

    @Override 
    public void endElement(String uri, String localName, String qName) 
      throws SAXException { 
     if (qName.equalsIgnoreCase("Variable")) { 
      varGroupVariables.add(varGroupVariable); 
     } 
    } 

    private int no = 1; 
    boolean bcore,bmold,bvalue,btype = false; 
    String nameAttribute; 
    List<VarGroupVariable> varGroupVariables; 
    VarGroupVariable varGroupVariable; 
} 

My sample xml is provided below 

<?xml version="1.0" encoding="UTF-8"?> 
<HMI_Data Version="1.0" MaschinenNR.="XXXXXX" Date="21-10-2009"> 
    <VarGroup Name="VG_MachineData"> 
     <Variable Name="Mold1.sv_rMoldStroke"> 
     <Typ>REAL</Typ> 
     <Value>6.000000e+02</Value> 
     </Variable> 
     <Variable Name="Core1.sv_rMaxSpeedFwd"> //REMOVE core1.sv_ 
     <Typ>REAL</Typ> 
     <Value>5.000000e+01</Value> 
     </Variable> 
     <Variable Name="Core1.sv_rMaxSpeedBwd"> 
     <Typ>REAL</Typ> 
     <Value>5.000000e+01</Value> 
     </Variable> 
     <Variable Name="Core1.sv_rMaxPressureFwd"> 
     <Typ>REAL</Typ> 
     <Value>1.450000e+02</Value> 
     </Variable> 
     <Variable Name="Core1.sv_rMaxPressureBwd"> 
     <Typ>REAL</Typ> 
     <Value>1.450000e+02</Value> 
     </Variable> 
     <Variable Name="Core1.sv_rImpulseFilterLimit"> 
     <Typ>REAL</Typ> 
     <Value>0.000000e+00</Value> 
     </Variable> 
     <Variable Name="Core2.sv_rMaxSpeedFwd"> //REMOVE core2.sv_ 
     <Typ>REAL</Typ> 
     <Value>5.000000e+01</Value> 
     </Variable> 
     <Variable Name="Core2.sv_rMaxSpeedBwd"> 
     <Typ>REAL</Typ> 
     <Value>5.000000e+01</Value> 
     </Variable> 

Answer 1

嘗試使用

nameAttribute = attributes.getValue("Name").split("_")[1];