java - 在 xml 中编辑更多名称

Question

我正在研究 xml 我使用了 sax 解析器我必须以指定的格式解析来自 xml 的数据现在的问题是名称属性的名称我必须只显示它的一半直到现在它显示整个名称。如何从 xml 中删除选择性字符。由于我是 xml 和 java 的新手，我对此有点困惑。我的代码如下所示：

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

尝试使用

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