1.连接数据库的代码:
package com.once.xfd.dbutil;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
public class DataBaseUtil {
/**
* 获取数据库连接
* @return Connection 对象
*/
public static Connection getConnection() {
Connection conn = null;
try {
Class.forName("com.microsoft.sqlserver.jdbc.SQLServerDriver");
String url = "jdbc:sqlserver://127.0.0.1:1433;databaseName=master";
String username = "sa";
String password = "123456";
conn = DriverManager.getConnection(url, username, password);
} catch (ClassNotFoundException e) {
e.printStackTrace();
} catch (SQLException e) {
e.printStackTrace();
}
return conn;
}
public static void closeConn(Connection conn) {
if (conn != null) {
try {
conn.close();
} catch (SQLException e) {
e.printStackTrace();
}
}
}
}
2.备份功能代码:
/**
* 备份数据库
* @return backup
* @throws Exception
*/
public String backup() {
ActionContext context = ActionContext.getContext();
HttpServletRequest request = (HttpServletRequest) context
.get(ServletActionContext.HTTP_REQUEST);
String webtruepath = request.getParameter("path");
String name = "dbname"; //数据库名
try {
File file = new File(webtruepath);
String path = file.getPath() + "\\" + name + ".bak";// name文件名
String bakSQL = "backup database 数据库名 to disk=? with init";// SQL语句
PreparedStatement bak = DataBaseUtil.getConnection()
.prepareStatement(bakSQL);
bak.setString(1, path);// path必须是绝对路径
bak.execute(); // 备份数据库
bak.close();
} catch (Exception e) {
e.printStackTrace();
}
return "backup";
}
3.还原数据库代码(调用存储过程)
/**
* 数据库还原
* @return recovery
*/
public String recovery() {
ActionContext context = ActionContext.getContext();
HttpServletRequest request = (HttpServletRequest) context
.get(ServletActionContext.HTTP_REQUEST);
String webtruepath = request.getParameter("path");
String name = "******";
String dbname = "******";
try {
File file = new File(webtruepath);
String path = file.getPath() + "\\" + name + ".bak";// name文件名
String recoverySql = "ALTER DATABASE 数据库名 SET ONLINE WITH ROLLBACK IMMEDIATE";// 恢复所有连接
PreparedStatement ps = DataBaseUtil.getConnection()
.prepareStatement(recoverySql);
CallableStatement cs = DataBaseUtil.getConnection().prepareCall("{call killrestore(?,?)}");
cs.setString(1, dbname); // 数据库名
cs.setString(2, path); // 已备份数据库所在路径
cs.execute(); // 还原数据库
ps.execute(); // 恢复数据库连接
} catch (Exception e) {
e.printStackTrace();
}
return "recovery";
}
4.存储过程代码:
create proc killrestore (@dbname varchar(20),@dbpath varchar(40))
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
restore database @dbname from disk= @dbpath with replace
end
PS:存储过程创建在系统数据库master下面,切记,否则会报错