jacob读写excel

//创建excel并写入保存，再打印
public class ExcelTest {
	private static ActiveXComponent xl;
	private static Object workbooks = null;
	private static Object workbook = null;
	private static Object sheet = null;
	private static String filename = null;
	private static boolean readonly = false;

	public static void main(String[] args) {
		Date now = new Date();
		Long nowtime = now.getTime();
//excel目录需要预先创建
		String path = "c:\\excel\\"+nowtime+".xls";
		createAndSave(path);
		printExcel(path);
	}

		// 读取值
	private static String GetValue(String position) {
		Object cell = Dispatch.invoke((Dispatch) sheet, "Range", Dispatch.Get,
				new Object[] { position }, new int[1]).toDispatch();
		String value = Dispatch.get((Dispatch) cell, "Value").toString();

		return value;
	}
	
	private static void createAndSave(String path){
		ActiveXComponent xl = new ActiveXComponent("Excel.Application");
		Object xlo = xl.getObject();
		try {
			System.out.println("version=" + xl.getProperty("Version"));
			System.out.println("version="
					+ Dispatch.get((Dispatch) xlo, "Version"));
			xl.setProperty("Visible", new Variant(true));
			Object workbooks = xl.getProperty("Workbooks").toDispatch();
			Object workbook = Dispatch.get((Dispatch) workbooks, "Add")
					.toDispatch();
			Object sheet = Dispatch.get((Dispatch) workbook, "ActiveSheet")
					.toDispatch();
			Object a1 = Dispatch.invoke((Dispatch) sheet, "Range",
					Dispatch.Get, new Object[] { "A1" }, new int[1])
					.toDispatch();
			Object a2 = Dispatch.invoke((Dispatch) sheet, "Range",
					Dispatch.Get, new Object[] { "A2" }, new int[1])
					.toDispatch();
			Dispatch.put((Dispatch) a1, "Value", "123.456");
			Dispatch.put((Dispatch) a2, "Formula", "=A1*2");
			Dispatch.call((Dispatch) workbook, "SaveAs", path);

			System.out.println("a1 from excel:"
					+ Dispatch.get((Dispatch) a1, "Value"));
			System.out.println("a2 from excel:"
					+ Dispatch.get((Dispatch) a2, "Value"));
			// Variant f = new Variant(false);
			// Dispatch.call((Dispatch) workbooks, "Close", f);
			// Dispatch.call((Dispatch) workbook, "Close");
		} catch (Exception e) {
			e.printStackTrace();
		} finally {
			xl.invoke("Quit", new Variant[] {});
		}
	}
	
	private static boolean printExcel(String path){
		ComThread.InitSTA();
		ActiveXComponent xl = new ActiveXComponent("Excel.Application");
		try {
			// System.out.println("version=" + xl.getProperty("Version"));
			Dispatch.put(xl, "Visible", new Variant(false));
			Dispatch workbooks = xl.getProperty("Workbooks").toDispatch();
			Dispatch excel = Dispatch.call(workbooks, "Open", path).toDispatch();
			Dispatch.get(excel, "PrintOut");
			System.out.println("printOver");
			Dispatch.call(excel, "Close");
			return true;
		} catch (Exception e) {
			e.printStackTrace();
		} finally {
			xl.invoke("Quit", new Variant[] {});
			ComThread.Release();
		}
		return false;
	}
}