java jxls 科学计数_java通过jxls框架实现导入导出excel
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//讀取
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public class ReadExcel {
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private final static String xmlConfig="student.xml";
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public List read(){
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InputStream inputXML = new BufferedInputStream(ReadExcel.class.getResourceAsStream(xmlConfig));
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XLSReader mainReader;
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String path=ReadExcel.class.getResource("/").getPath();
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path=path.substring(1,path.indexOf("/WebRoot")+1)+"WebRoot/Excel/stu.xls";
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try {
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mainReader = ReaderBuilder.buildFromXML(inputXML );
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InputStream inputXLS = new BufferedInputStream(new FileInputStream(path));
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Student stu=new Student();
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List students = new ArrayList();
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Map beans = new HashMap();
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beans.put("stu", stu);
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beans.put("students", students);
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XLSReadStatus readStatus = mainReader.read(inputXLS, beans);
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return students;
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} catch (IOException e) {
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// TODO Auto-generated catch block
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e.printStackTrace();
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} catch (SAXException e) {
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// TODO Auto-generated catch block
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e.printStackTrace();
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}
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return null;
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}
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public static void main(String[] args) {
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ReadExcel re=new ReadExcel();
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List list=re.read();
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System.out.println("ID\t name\t subject\t score");
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for(Student stu:list){
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System.out.println(stu.getIdname()+"\t "+stu.getName()+"\t "+stu.getSubject()+"\t "+stu.getScorename());
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}
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}
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}
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//寫入
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public class WriteExcel {
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public static void write(List list){
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List students = new ArrayList();
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Map beans = new HashMap();
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beans.put("students", list);
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XLSTransformer transformer = new XLSTransformer();
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String path=ReadExcel.class.getResource("/").getPath();
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path=path.substring(1,path.indexOf("/WebRoot")+1)+"WebRoot/Excel/";
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try {
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transformer.transformXLS(path+"/student.xls", beans, path+"/stus.xls");
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} catch (ParsePropertyException e) {
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e.printStackTrace();
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} catch (IOException e) {
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e.printStackTrace();
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}
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}
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public List getStudetns(){
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List list=new ArrayList();
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Student stu=null;
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PreparedStatement pre=null;
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ResultSet re=null;
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try{
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pre=DBConector.getCon().prepareStatement("select * from student");
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re=pre.executeQuery();
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while(re.next()){
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stu=new Student();
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stu.setId(re.getLong(1));
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stu.setName(re.getString(2));
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stu.setSubject(re.getString(3));
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stu.setScore(re.getLong(4));
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list.add(stu);
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}
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}catch(Exception e){
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e.printStackTrace();
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}finally{
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try{
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if(re!=null)
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re.close();
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if(pre!=null)
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pre.close();
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}catch(Exception e){
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}
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}
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return list;
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}
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public static void main(String[] args) {
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WriteExcel w=new WriteExcel();
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w.write(w.getStudetns());
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}
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}
view sourceprint?
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//sql
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create table STUDENT
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(
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ID NUMBER(8) not null primary key,
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NAME VARCHAR2(50) not null,
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SUBJECT VARCHAR2(50) not null,
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SCORE NUMBER(8)
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)
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