原生java讀取存儲為xml格式的數據，並存儲到java bean里

一、舉例讀取的文件為：test.xml

<?xml version="1.0" encoding="UTF-8"?>

<IMIXML>
    <SecDef Desc="國債" CentraQuoteBondIndic="Y">
        <Instrmt ID="CFT" Sym="現券買賣"/>
    </SecDef>
    <SecDef Desc="債券" CentraQuoteBondIndic="X">
        <Instrmt ID="CCC" Sym="是否"/>
    </SecDef>
</IMIXML>

二 項目結構：

 

三 代碼：

package parseXml;

import org.xml.sax.Attributes;
import org.xml.sax.InputSource;
import org.xml.sax.helpers.DefaultHandler;

import javax.xml.parsers.SAXParser;
import javax.xml.parsers.SAXParserFactory;
import java.util.HashMap;


public class Test extends DefaultHandler {
    public static SAXParserFactory parserFactory;
    public static SAXParser parser;
    public static HashMap<String, SecDef> map = new HashMap<String, SecDef>();
    String xBondTransactableBondInformation_Id; // 債券代碼
    SecDef secdef;
    Instrmt instrmt;

    @Override
    public void startDocument() {

    }

    // 讀取XML的<后開始執行
    @Override
    public void startElement(String uri, String localName, String qName,
                             Attributes attributes) {
        if ("SecDef".equals(qName)) {
            secdef = new SecDef();
            instrmt = new Instrmt();
            secdef.setCentraQuoteBondIndic(attributes
                    .getValue("CentraQuoteBondIndic"));
            secdef.setDesc(attributes.getValue("Desc"));
            secdef.setInstrmt(instrmt);
        }
        if ("Instrmt".equals(qName)) {
            xBondTransactableBondInformation_Id = attributes.getValue("ID");
            instrmt.setId(attributes.getValue("ID"));
            instrmt.setSym(attributes.getValue("Sym"));
        }

    }

    @Override
    public void characters(char[] ch, int start, int length) {
    }

    // 讀取XML的</后開始執行
    @Override
    public void endElement(String uri, String localName, String qName) {
        map.put(
                xBondTransactableBondInformation_Id, secdef);
    }

    @Override
    public void endDocument() {

    }

    /**
     * 解析方法
     *
     * @return map
     */
    public static HashMap<String, SecDef> loadXML(String filePath) {
        try {
            parserFactory = SAXParserFactory.newInstance();
            parser = parserFactory.newSAXParser();
            Test reader = new Test();
            parser.parse(new InputSource(filePath), reader);
        } catch (Exception e) {
            e.printStackTrace();
            return null;
        }
        return map;
    }

    public static HashMap<String, SecDef> resultMap;

    public static void main(String[] args) {
        resultMap = loadXML("src/input/xml/test.xml");

        for (String key : resultMap.keySet()) {
            System.out.print("key=" + key + "\t");
            System.out.println("value="
                    + resultMap.get(key));
        }
    }

}

package parseXml;

public class SecDef {
    private String desc;//
    private String CentraQuoteBondIndic;
    private Instrmt instrmt;

    public SecDef() {

    }

    public String getDesc() {
        return desc;
    }

    public void setDesc(String desc) {
        this.desc = desc;
    }

    public String getCentraQuoteBondIndic() {
        return CentraQuoteBondIndic;
    }

    public void setCentraQuoteBondIndic(String centraQuoteBondIndic) {
        CentraQuoteBondIndic = centraQuoteBondIndic;
    }

    public Instrmt getInstrmt() {
        return instrmt;
    }

    public void setInstrmt(Instrmt instrmt) {
        this.instrmt = instrmt;
    }

    @Override
    public String toString() {
        return "SecDef{" +
                "desc='" + desc + '\'' +
                ", CentraQuoteBondIndic='" + CentraQuoteBondIndic + '\'' +
                ", instrmt=" + instrmt +
                '}';
    }
}

package parseXml;

public class Instrmt {
    private String id;
    private String sym;

    public Instrmt() {

    }


    public String getId() {
        return id;
    }

    public void setId(String id) {
        this.id = id;
    }

    public String getSym() {
        return sym;
    }

    public void setSym(String sym) {
        this.sym = sym;
    }

    @Override
    public String toString() {
        return "Instrmt{" +
                "id='" + id + '\'' +
                ", sym='" + sym + '\'' +
                '}';
    }
}

四 結果：