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  • excel导出为sql

    package Tools;
    import java.io.BufferedWriter;
    import java.io.File;
    import java.io.FileWriter;
    import java.io.IOException;
    import java.lang.reflect.Field;
    import java.util.ArrayList;
    import java.util.List;
    import jxl.Sheet;
    import jxl.Workbook;
    import entity.Student;
    public class ConvertXMSToSQL {
    /**
    * 从xls表格中获取数据,生成可执行的sql文件,用以插入数据库,注意需要引入jxl包!支持int,Integer,long,Long,String
    * ,可自行扩展
    *
    * @param args
    * @throws IllegalArgumentException
    * @throws IllegalAccessException
    */
    public static void main(String[] args) throws IllegalArgumentException,
    IllegalAccessException {
    // 得到表格中所有的数据
    List<Student> listExcel = getAllByExcel("C:\Users\xxx\Desktop\zzz.xls");
    try {
    String path = "C:\Users\xxx\Desktop\convert.sql";// 文件保存路径、名字
    File file = new File(path);
    BufferedWriter ow = new BufferedWriter(new FileWriter(file));
    for (Student c : listExcel) {
    String sql = "insert into cfg_avatar values (" + outSql(c)
    + ")";
    ow.write(sql + ";" + " ");
    }// 写入内容
    ow.close();
    } catch (IOException e) {
    e.printStackTrace();
    }
    }
    /**
    * 从xls中获取数据
    *
    * @param file
    * @return
    */
    public static List<Student> getAllByExcel(String file) {
    List<Student> list = new ArrayList<Student>();
    try {
    Workbook rwb = Workbook.getWorkbook(new File(file));
    Sheet rs = rwb.getSheet(0);
    int clos = rs.getColumns();// 得到所有的列
    int rows = rs.getRows();// 得到所有的行
    // 样例中,数据从第三列第一行开始
    for (int i = 2; i < rows; i++) {
    // 取得的每一行的所有数据存入listString
    List<String> listString = new ArrayList<String>();
    for (int j = 0; j < clos; j++) {
    String str = rs.getCell(j, i).getContents();
    listString.add(str);
    }
    Student Student = (Student) newObject(new Student(), listString);
    list.add(Student);
    }
    } catch (Exception e) {
    e.printStackTrace();
    }
    return list;
    }
    /**
    * 使用反射设置数据。此例中可设置的数据类型有限,没有的请自己添加!!!
    *
    * @param obj
    * @param list
    * @return
    * @throws IllegalArgumentException
    * @throws IllegalAccessException
    */
    public static Object newObject(Object obj, List<String> list)
    throws IllegalArgumentException, IllegalAccessException {
    Field[] field = obj.getClass().getDeclaredFields();
    for (int i = 0; i < field.length; i++) {
    Field f = field[i];
    f.setAccessible(true);
    if (f.getType() == String.class) {
    f.set(obj, list.get(i));
    }
    if (f.getType() == Integer.class) {
    f.set(obj, Integer.parseInt(list.get(i)));
    }
    if (f.getType() == int.class) {
    f.set(obj, Integer.parseInt(list.get(i)));
    }
    if (f.getType() == Long.class) {
    f.set(obj, Long.parseLong(list.get(i)));
    }
    if (f.getType() == long.class) {
    f.set(obj, Long.parseLong(list.get(i)));
    }
    }
    return obj;
    }
    /**
    *
    * @param obj
    * @return
    * @throws IllegalArgumentException
    * @throws IllegalAccessException
    */
    public static String outSql(Object obj) throws IllegalArgumentException,
    IllegalAccessException {
    StringBuffer buffer = new StringBuffer();
    Field[] field = obj.getClass().getDeclaredFields();
    for (int i = 0; i < field.length; i++) {
    Field f = field[i];
    f.setAccessible(true);
    if (f.getType() == String.class) {
    buffer.append("'");
    }
    buffer.append(f.get(obj));
    if (f.getType() == String.class) {
    buffer.append("'");
    }
    if (i < field.length - 1) {
    buffer.append(",");
    }
    }
    return buffer.toString();
    }
    }
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  • 原文地址:https://www.cnblogs.com/k-iss/p/5852228.html
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