Java代码实现mysql导入导出

注意实现mysql导入导出必须配制好环境变量，例如：C:\Program Files\MySQL\MySQL Server 5.1\bin;否则将无法正常运行。

package cc.javaweb;

import java.io.BufferedReader;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.OutputStreamWriter;

public class MySQLTest {

public static void main(String[] args) {
String config[] =new String[7];
config[0] = "-uroot"; //用户名
config[1] = "-proot"; //密码
config[2] = "-hlocalhost"; //主机
config[3] = "takoocomcn"; //数据库名
config[4] = "f:/data.sql"; //导出数据库路征
config[5] = "f:/data.sql"; //导入数据库路征
config[6] = "my"; //导入数据库名称
backup(config);
load(config);
}

private static void backup(String config[]) {
try {
Runtime rt = Runtime.getRuntime();

// 调用 mysql 的 cmd:
Process child = rt
.exec("mysqldump " + config[0] + " "+config[1]+" "+config[2]+" "+config[3]+" --set-charset=utf8"); // --add-drop-table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(config[4]);
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! */ ");

} catch (Exception e) {
e.printStackTrace();
}
}
private static void load(String[] config) {
try {
String fPath = config[5];
Runtime rt = Runtime.getRuntime();

// 调用 mysql 的 cmd:
Process child = rt.exec("mysql " + config[0] + " "+config[1]+" "+config[2]+" "+config[3]);

OutputStream out = child.getOutputStream();//控制台的输入信息作为输出流
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");
// }
sb.append("use " + config[6] + ";\r\n");
sb.append("source "+fPath);
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();
}
}
}
 

文章转自Java中文网:http://www.javaweb.cc/language/java/152482.shtml

评论

1 楼 kinglinma 2012-08-09  

你确定你测试通过了吗？
没测试别乱喷！！！