在 Windows 上执行 Java ProcessBuilder 中的 MySQL 命令

Question

我正在尝试在 WINDOWS 上执行来自 Java ProcessBuilder 的一些 MySQL 命令，但我遇到了一些问题。目前，我想做的是显示数据库，但在不久的将来我将使用转储等。所以这是应该的方式。

这是我的代码：

try {

//  Process process = Runtime.getRuntime().exec("cmd /c C:/\"Program files\"/MySQL/\"MySQL Server 8.0\"/bin/mysql -uroot -pMYPASS -e \"show databases;\""); 
//  IT DIDN'T WORK EITHER.

    ProcessBuilder coolBuilder = new ProcessBuilder(new String[]{"cmd", "/c", "C://\"Program files\"/MySQL/\"MySQL Server 8.0\"/bin/mysql -u root -pMYPASS -e \"show databases;\""});
    Process process = coolBuilder.start();

    int errCode = process.waitFor();
    if (errCode != 0) {
        System.out.println("errCode = " + errCode);
        errorList.add(ErrorEnum.ERROR_OCCURED_WHILE_INSIDE_SHELL.toString());
    }

    for (String s : output(process.getErrorStream())) {
        if (!s.contains("Warning")) {
            errorList.add(s);
            return errorList;
        }
    }

    return output(process.getInputStream());

} catch (Exception e) {
    e.printStackTrace();
}

这是我得到的：

C://Program files/MySQL/MySQL Server 8.0/bin/mysql  Ver 8.0.20 for Win64 on x86_64 (MySQL Community Server - GPL)
Copyright (c) 2000, 2020, Oracle and/or its affiliates. All rights reserved.
Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.
Usage: C://Program files/MySQL/MySQL Server 8.0/bin/mysql [OPTIONS] [database]
  -?, --help          Display this help and exit.
  -I, --help          Synonym for -?
  --auto-rehash       Enable automatic rehashing. One doesn't need to use
                      'rehash' to get table and field completion, but startup



...

errCode = 1

对我做错的地方有什么建议吗？

Answer 1

我无法重现您的问题。我怀疑您的密码中可能有一个奇怪的字符，Windows 命令提示符不喜欢。

您是否尝试过直接执行 mysql 可执行文件而不是通过 cmd.exe，即使用类似下面的方法？

        ProcessBuilder coolBuilder = new ProcessBuilder(new String[]{"C://Program files/MySQL/MySQL Server 8.0/bin/mysql", "-u", "root", "-pMYPASS", "-e", "show databases;"});
        Process process = coolBuilder.start();

这样您就不需要引用所有参数。

在 Windows 上执行 Java ProcessBuilder 中的 MySQL 命令

Execute MySQL commands in Java ProcessBuilder on Windows

java

mysql

processbuilder