在ssh框架下,用hibernate的配置文件完成以下操作
首先,设置mysql的环境变量(在path中添加%MYSQL_HOME%in),重启电脑。
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Properties;
import org.apache.struts2.ServletActionContext;
import org.hibernate.cfg.Configuration;
import org.hibernate.mapping.Table;
public class DataBaseUtil {
private static String CONFIG_FILE_LOCATION = "/hibernate.cfg.xml";
private static Configuration configuration = new Configuration();
private static String configFile = CONFIG_FILE_LOCATION;
private static Properties properties = null;
static {// 初始化hibernate配置文件
try {
configuration.configure(configFile);
properties = configuration.getProperties();
} catch (Exception e) {
System.err.println("%%%% Error Creating configuration %%%%");
e.printStackTrace();
}
}
/**
* getTableNameList方法概述:获取所有的表
*
* @return
*/
public static List
List
for (Iterator iter = configuration.getTableMappings(); iter.hasNext();) {
Table table = (Table) iter.next();
String name = table.getName();
if (!tableNames.contains(name)) {
tableNames.add(name);
}
}
return tableNames;
}
/**
* backup方法概述:备份数据库
*
* @return
*/
public static String backup(Map
List
Date date = new Date();
SimpleDateFormat sdf = new SimpleDateFormat("yyyyMMddHHmmssSSS");
String s = sdf.format(date);
String fileName = ServletActionContext.getServletContext().getRealPath(
"document")
+ "/" + s + ".sql";
return backup(properties.getProperty("connection.username"), properties
.getProperty("connection.password"), properties
.getProperty("myeclipse.connection.profile"), fileName,
tableNames);
}
/**
* backup方法概述:备份数据库方法
*
* @param user
* 数据库用户名
* @param password
* 数据库密码
* @param database
* 备份数据库名字
* @param tables
* 需要备份的表
* @return
*/
public static String backup(String userName, String password,
String database, String fileName, List
String outStr = null;
try {
Runtime rt = Runtime.getRuntime();
String cmd = "mysqldump ";
cmd += database;
if (tables != null) {
for (int i = 0; i < tables.size(); i++) {
cmd += " " + tables.get(i);
}
}
cmd += " -h192.168.1.200 -u" + userName + " -p" + password;
// 调用 mysql 的 cmd:
Process child = rt.exec(cmd);// 设置导出编码为utf8。这里必须是utf8
// 把进程执行中的控制台输出信息写入.sql文件,即生成了备份文件。注:如果不对控制台信息进行读出,则会导致进程堵塞无法运行
InputStream in = child.getInputStream();// 控制台的输出信息作为输入流
InputStreamReader xx = new InputStreamReader(in, "utf8");// 设置输出流编码为utf8。这里必须是utf8,否则从流中读入的是乱码
String inStr;
StringBuffer sb = new StringBuffer("");
// 组合控制台输出信息字符串
BufferedReader br = new BufferedReader(xx);
while ((inStr = br.readLine()) != null) {
sb.append(inStr + "
");
}
outStr = sb.toString();
FileOperationsUtil.saveSql(outStr);//写入到文件
// 别忘记关闭输入输出流
in.close();
xx.close();
br.close();
// writer.close();
// fout.close();
} catch (Exception e) {
System.out.println("/* 备份 " + database + " 数据库异常!" + e.getMessage()
+ " */");
}
return outStr;
}
/**
* imports方法概述:还原数据库
*
* @param userName
* 数据库登录名
* @param password
* 密码
* @param database
* 还原的数据库
* @param filepath
* 执行的sql文件(文件路径不能有空格)
*/
public static boolean imports(String userName, String password,
String database, String filepath) {
boolean flag = false;
// 新建数据库finacing
String stmt1 = "mysqladmin -u " + userName + " -p" + password
+ " create " + database;
// -p后面加的是你的密码
String stmt2 = "mysql -u " + userName + " -p" + password + " "
+ database + " < " + filepath;
String[] cmd = { "cmd", "/c", stmt2 };
try {
Runtime.getRuntime().exec(stmt1);
Runtime.getRuntime().exec(cmd);
} catch (IOException e) {
e.printStackTrace();
}
return flag;
}
/**
* restoreMysqlFromFile方法概述:还原数据库
*
* @param userName
* 数据库用户名
* @param password
* 密码
* @param database
* 数据库名字
* @param sql
* 脚本
* @return
*/
public static boolean restoreMysqlFromFile(String userName,
String password, String database, String sql) {
boolean b = false;
try {
String stmt1 = "mysqladmin -u " + userName + " -p" + password
+ " create " + database;
String stmt2 = "mysql -u " + userName + " -p" + password + " "
+ database;
String[] cmd = { "cmd", "/c", stmt2 };
Runtime.getRuntime().exec(stmt1);
Runtime rt = Runtime.getRuntime();
Process child = rt.exec(cmd);// 这里执行的是mysql命令,用户名,密码以及要恢复的数据库,命令执行完后会从我们上传的文件里面读取要执行的内容
OutputStream out = child.getOutputStream();// 控制台的输入信息作为输出流
OutputStreamWriter writer = new OutputStreamWriter(out, "utf8");
writer.write(sql);
// 注:这里如果用缓冲方式写入文件的话,会导致中文乱码,用flush()方法则可以避免
writer.flush();
// br.close();
writer.close();
out.close();
// fis.close();
b = true;
} catch (Exception e) {
e.printStackTrace();
}
return b;
}
/**
* imports方法概述:还原数据
*
* @param filepath
* @return
*/
public static boolean imports(String Sql) {
return restoreMysqlFromFile(properties
.getProperty("connection.username"), properties
.getProperty("connection.password"), properties
.getProperty("myeclipse.connection.profile"), Sql);
}
}