Java web程序中備份oracle數據庫

1.生成備份文件：

public?ActionForward?createDmp(ActionMapping?mapping,?ActionForm?form,
????????????HttpServletRequest?request,?HttpServletResponse?response)
????????????throws?Exception?{
????????Calendar?c?=?Calendar.getInstance();
????????SimpleDateFormat?sdf?=?new?SimpleDateFormat("yyyyMMddHHmmss");
????????String?fileName?=?"data_oracle"?+?sdf.format(c.getTime());
????????String?dmpFolder?=?request.getSession().getServletContext()
????????????????.getRealPath("")
????????????????+?"\\datas\\dmp\\";
????????String?logFolder?=?request.getSession().getServletContext()
????????????????.getRealPath("")
????????????????+?"\\datas\\log\\";

????????String?cmd?=?"exp?username/password@orcl?file='"?+?dmpFolder?+?fileName
????????????????+?".dmp'?log='"?+?logFolder?+?fileName?+?".log'?owner=username";
????????Runtime.getRuntime().exec(cmd);
????????Thread.sleep(100?*?1000);
????????request.setAttribute("msg",?"備份成功,文件生成會有延遲,請稍等");
????????return?mapping.findForward("dmpCreated");
????}

2.查詢備份文件：

public?ActionForward?findDmp(ActionMapping?mapping,?ActionForm?form,
????????????HttpServletRequest?request,?HttpServletResponse?response)
????????????throws?Exception?{
????????String?dmpFolder?=?request.getSession().getServletContext()
????????????????.getRealPath("")
????????????????+?"\\datas\\dmp\\";
????????File?folder?=?new?File(dmpFolder);
????????File[]?files?=?folder.listFiles();
????????List<String[]>?fileList?=?new?ArrayList<String[]>();
????????for?(int?i?=?0;?i?<?files.length;?i++)?{
????????????if?(files[i].getName().indexOf(".dmp")?>?0)?{
????????????????String[]?one?=?new?String[2];
????????????????one[0]?=?files[i].getName();
????????????????one[1]?=?files[i].length()?/?1000?+?"K";
????????????????fileList.add(one);
????????????}
????????}
????????request.setAttribute("fileList",?fileList);
????????return?mapping.findForward("dmpList");
????}

3.刪除備份文件：

public?ActionForward?deleteDmp(ActionMapping?mapping,?ActionForm?form,
????????????HttpServletRequest?request,?HttpServletResponse?response)
????????????throws?Exception?{
????????String?dmpFolder?=?request.getSession().getServletContext()
????????????????.getRealPath("")
????????????????+?"\\datas\\dmp\\";
????????File?folder?=?new?File(dmpFolder);
????????File[]?files?=?folder.listFiles();
????????String?fileName?=?request.getParameter("dmpName");
????????for?(int?i?=?0;?i?<?files.length;?i++)?{
????????????if?(files[i].getName().equals(fileName))?{
????????????????files[i].delete();
????????????????request.setAttribute("msg",?"刪除成功");
????????????????break;
????????????}
????????}
????????return?mapping.findForward("dmpList");
????}

轉載于:https://www.cnblogs.com/zzkun/archive/2010/06/08/4481832.html

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