--还原数据库时数据库正在使用导致数据库无会还原，此存储过存在msater数据库下创建。exec killspid cztdba 结束此数据库的进程，这样才能还原数据库
create proc killspid (@dbname varchar(20))     
as     
begin     
declare @sql   nvarchar(500)     
declare @spid  int     
set @sql='declare getspid cursor for select spid from sysprocesses where dbid=db_id('''+@dbname+''')'     
exec (@sql)     
open getspid     
fetch next from getspid into @spid     
while @@fetch_status <> -1     
begin     
exec('kill '+@spid)     
fetch next from getspid into @spid     
end     
close getspid     
deallocate getspid     
end  

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/**
   * 还原数据库备份文件
   * @return
   */
  public String restoreDatabase() {
    String path = null;
    try {
      path = WebUtils.getRealPath(getServletContext(), restDatabasePath);
    } catch (FileNotFoundException e) {
      logger.error("Can't get web path.", e);
    }
    //文件夹不存在创建
    uploadedFileHandler.setTargetPath(path);
    //得到上传后文件对象
    File file = uploadedFileHandler.doUpload(data, dataFileName);
    if (file.exists()) {
      StringBuffer sbf = new StringBuffer();
      sbf.append("use master exec killspid 'cztdba' restore database cztdba from disk='")
         .append(file.getPath())
         .append("'");
      
      //执行还原数据语句
      try {
        jdbcTemplate.execute(sbf.toString());
        addActionError("还原数据库成功");
      } catch(Exception e) {
        addActionError("还原数据库失败");
      }
      
      /**
       * 不添加这句会找不到数据库里的表，添加上这句会出现异常但是对系统无影响，所以把此异常屏蔽
       */
      try {
        jdbcTemplate.execute("use cztdba");
      } catch(Exception e) {
        //e.printStackTrace();
      }
    }
    return INPUT;
  }
 
  /**
   * 备份数据库文件
   * @return
   */
  public String backDatabase() {
    StringBuffer path = new StringBuffer();
    try {
      path.append(WebUtils.getRealPath(getServletContext(), backDatabasePath));
    } catch (FileNotFoundException e) {
      logger.error("Can't get web path.", e);
    }
    //文件夹不存在创建
    uploadedFileHandler.setTargetPath(path.toString());
    //下载文件名称，随机生成
    downFileName = DateUtil.getDateTime("yyyyMMddhhmmss", new Date()) + ".back";
    //得到文件在系统中实际地址
    path.append(File.separatorChar)
        .append(downFileName);
    //开始备份文件
    StringBuffer sbf = new StringBuffer("backup database cztdba to disk='")
      .append(path.toString())
      .append("'");
    jdbcTemplate.execute(sbf.toString());
    try {
      inputStream = new FileInputStream(path.toString());
    } catch (FileNotFoundException e) {
      e.printStackTrace();
      addActionError("备份文件出现问题");
      return INPUT;
    }
    return SUCCESS;
  }

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