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sqlserver数据写入到excel

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Release: 2016-06-07 15:51:19
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欢迎进入Windows社区论坛,与300万技术人员互动交流 >>进入 使用 c3p0获取 DataSource public class DataSourceUtils { private static DataSource ds; static{ //默认的读取c3p0-config.xml中默认配置 ds = new ComboPooledDataSource(); } public stati

欢迎进入Windows社区论坛,与300万技术人员互动交流 >>进入

  使用 c3p0获取 DataSource

  public class DataSourceUtils {

  private static DataSource ds;

  static{

  //默认的读取c3p0-config.xml中默认配置

  ds = new ComboPooledDataSource();

  }

  public static DataSource getDatasSource(){

  return ds;

  }

  public static Connection getConn(){

  Connection con = null;

  try{

  con = ds.getConnection();//每一次从ds中获取一个新的连接

  }catch(Exception e){

  e.printStackTrace();

  }

  return con;

  }

  }

  使用 poi 将数据写入到excel中

  public void createXls() throws Exception{

  //声明一个工作薄

  HSSFWorkbook wb = new HSSFWorkbook();

  //声明表

  HSSFSheet sheet = wb.createSheet("第一个表");

  //声明行

  HSSFRow row = sheet.createRow(7);

  //声明列

  HSSFCell cel = row.createCell(3);

  //写入数据

  cel.setCellValue("你也好");

  FileOutputStream fileOut = new FileOutputStream("d:/a/b.xls");

  wb.write(fileOut);

  fileOut.close();

  }

  @Test

  public void export() throws Exception{

  //声明需要导出的数据库

  String dbName = "contact";

  //声明book

  HSSFWorkbook book = new HSSFWorkbook();

  //获取Connection,获取db的元数据

  Connection con = DataSourceUtils.getConn();

  //声明statemen

  Statement st = con.createStatement();

  //st.execute("use "+dbName);

  DatabaseMetaData dmd = con.getMetaData();

  //获取数据库有多少表

  ResultSet rs = dmd.getTables(null,null,null,new String[]{"TABLE"});

  //获取所有表名 - 就是一个sheet

  List tables = new ArrayList();

  while(rs.next()){

  String tableName = rs.getString("TABLE_NAME");

  System.out.println("**********" + tableName);

  tables.add(tableName);

  }

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sqlserver数据写入到excel

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