Question

我会另外应用注释1和2.但是我没有使用在cmd中工作的java.mysqldump来获取myqldump文件。我认为在cmd中输入mysqldump注释后会询问密码。请快速帮助我。谢谢。

   String dumpCommand = "C:\\Program Files\\MySQL\\MySQL Server 5.0\\bin\\mysqldump" + " -u " + user + " -p" + " " + database + " > " + path;
    **//command 1**
    Runtime rt = Runtime.getRuntime();
    File test = new File(path);
    PrintStream ps;

    try {
    //    Process child = rt.exec("Cmd /c \"C:/Program Files/MySQL/MySQL Server 5.0/bin/mysqldump\" -u root -p saxco > "+path);//command 2

        Process child = rt.exec(dumpCommand);
        ps = new PrintStream(test);
         InputStream in = child.getInputStream();
        int ch;
        while ((ch = in.read()) != -1) {
           ps.write(ch);
            System.out.write(ch);
        }

Answer 1

如文档here所示，您可以在命令中指定密码，例如[...] -pPASSWORD [...]。请注意，{strong>不必须是-p选项标记与实际密码之间的空格。

请注意，以这种方式指定密码存在安全风险！

Answer 2

如果您不使用密码，请不要使用-p选项。

String dumpCommand =“C：\ Program Files \ MySQL \ MySQL Server 5.0 \ bin \ mysqldump”+“ - u”+ user + database +“＆gt;”+ path;

或者如果你有一个（没有间隙）

String dumpCommand =“C：\ Program Files \ MySQL \ MySQL Server 5.0 \ bin \ mysqldump”+“ - u”+ user +“ - p”+ password +“”+ database +“＆gt;”+ path;

Answer 3

试试这个 -

String cmd="mysqldump -u "+USER+" -p"+PASSWORD+"  "+database+" --routines -r"+PATH;

                 Runtime runtime = Runtime.getRuntime();
                 Process exec;

                 exec = runtime.exec(cmd);

                 int processComplete = exec.waitFor();
         if(processComplete == 0){
         System.out.println("Backup taken successfully in "+PATH+" on "+new Date());
         } else {
         System.out.println("Could not take mysql backup  :ERROR:");
         }

mysqldump文件创建一个空的sql文件

3 个答案: