package com.cn.springbootdatabase;
import java.io.*;
import java.text.SimpleDateFormat;
import java.util.Date;
public class cc {
public static void main(String[] args) {
/*// 数据库导出
String user = "root"; // 数据库帐号
String password = "123456"; // 数据库密码
String database = "home"; // 需要备份的数据库名
String filepath = "D:\\mysql.sql"; // 需要备份到的地址
String stmt1 = "mysqldump " + database + " -u " + user + " -p" + password + " --result-file=" + filepath;
try {
Runtime.getRuntime().exec(stmt1);
System.out.println("数据已导出到文件" + filepath + "中");
} catch (IOException e) {
e.printStackTrace();
}*/
SimpleDateFormat sd=new SimpleDateFormat("yyyyMMddHHmmss");
String root = "root";
String rootPass = "123456";
String dbName = "home";
String backupsPath = "D:";
String backupsSqlFileName = "homeDB_"+sd.format(new Date())+".sql";
dbBackUp(root, rootPass, dbName, backupsPath, backupsSqlFileName);
backup();
load();
}
public static String dbBackUp(String root,String rootPass,String dbName,String backupsPath,String backupsSqlFileName)
{
//生成临时备份文件
// SimpleDateFormat sd=new SimpleDateFordckupsSqlFileName;
String pathSql = backupsPath+backupsSqlFileName;
try {
File fileSql = new File(pathSql);
if(!fileSql.exists()){
fileSql.createNewFile();
}
StringBuffer sbs = new StringBuffer();
sbs.append("mysqldump ");
sbs.append(" -h 127.0.0.1 ");
sbs.append(" -u ");
sbs.append(root+" ");
sbs.append("-p"+rootPass+" ");
sbs.append(dbName);
sbs.append(" --default-character-set=utf8 ");
// sbs.append(">"+pathSql);
sbs.append(" --result-file="+pathSql);
System.out.println("cmd命令为：——>>>"+sbs.toString());
Runtime runtime = Runtime.getRuntime();
Process child = runtime.exec(sbs.toString());
//读取备份数据并生成临时文件
InputStream in = child.getInputStream();
OutputStreamWriter writer = new OutputStreamWriter(new FileOutputStream(pathSql), "utf8");
BufferedReader reader = new BufferedReader(new InputStreamReader(in, "utf8"));
String line=reader.readLine();
while (line != null) {
writer.write(line+"\n");
line=reader.readLine();
}
writer.flush();
System.out.println("数据库已备份到——>>"+pathSql);
} catch (Exception e) {
}
return pathSql;
}
public static boolean backup() {//备份
SimpleDateFormat sd=new SimpleDateFormat("yyyyMMddHHmmss");
try {
Runtime rt = Runtime.getRuntime();
String mysql = "mysqldump -uroot -p123456 home --default-character-set=utf8 ";
// mysql ="C:\\Program Files\\MySQL\\MySQL Server 5.5\\bin"+mysql;
System.out.println("mysql=============>>>>"+mysql);
// 调用 mysql 的 cmd:
Process child = rt
.exec("cmd /c "+mysql);// 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("");
String outStr;
// 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 + "\r\n");
}
outStr = sb.toString();
// 要用来做导入用的sql目标文件：
FileOutputStream fout = new FileOutputStream(
"D:/homeDB_"+sd.format(new Date())+".sql");
OutputStreamWriter writer = new OutputStreamWriter(fout, "utf8");
writer.write(outStr);
// 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();
// 别忘记关闭输入输出流
in.close();
xx.close();
br.close();
writer.close();
fout.close();
System.out.println("/* Output OK! */");
String error="备份成功!";
} catch (Exception e) {
e.printStackTrace();
}
return true;
}
public static boolean load() {//还原
try {
String fPath = "D:/mysql.sql";
Runtime rt = Runtime.getRuntime();
// 调用 mysql 的 cmd:
Process child = rt.exec("mysql -uroot -p123456 home ");
OutputStream out = child.getOutputStream();//控制台的输入信息作为输出流
String inStr;
StringBuffer sb = new StringBuffer("");
String outStr;
BufferedReader br = new BufferedReader(new InputStreamReader(
new FileInputStream(fPath), "utf8"));
while ((inStr = br.readLine()) != null) {
sb.append(inStr + "\r\n");
}
outStr = sb.toString();
OutputStreamWriter writer = new OutputStreamWriter(out, "utf8");
writer.write(outStr);
// 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();
// 别忘记关闭输入输出流
out.close();
br.close();
writer.close();
System.out.println("/* Load OK! */");
} catch (Exception e) {
e.printStackTrace();
}
return true;
}
}
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