从远程数据库备份mysqldump进程错误的mysql

Question

我想备份我的远程mysql数据库。我看过很多例子，但我找不到答案我做错了什么。我的计算机上有mysql服务器，其名称不是我的远程数据库，我只想在我的计算机中创建sql文件，以便有一个副本。我执行的按钮操作代码是：

try {
            String cs = "jdbc:mysql://db4free.net:3306/DBNAME?user=DBUSER&password=DBPASSWORD";
            Class.forName("com.mysql.jdbc.Driver").newInstance();
            Connection connection = java.sql.DriverManager.getConnection(cs);
            String executeCmd = "";
            if (connection != null) {
                executeCmd = "mysqldump -hwww.db4free.net -u DBUSER -pDBPASSWORD DBNAME > backup.sql";
                Process runtimeProcess = Runtime.getRuntime().exec(new String[] { "cmd.exe", "/c", executeCmd });
                int processComplete = runtimeProcess.waitFor();
                if (processComplete == 0) {
                    JOptionPane.showMessageDialog(rootPane, "OK");
                } else {
                    JOptionPane.showMessageDialog(rootPane, "Didn't make a copy.");
                }
            } else {
                JOptionPane.showMessageDialog(rootPane, "Failed");
            }
        } catch (Exception e) {
            e.printStackTrace();
        }

Answer 1

系统找不到指定的文件。

尝试向文件添加路径

            executeCmd = "/usr/bin/mysqldump -hwww.db4free.net -u DBUSER -pDBPASSWORD DBNAME > backup.sql";