Question

尝试使用Java进行自动MYSQL备份时，我不断收到以下错误，并且一直在尝试整个上午的工作。该系统是WindowsXP SP3，运行Apache Tomcat 6和Java 1.6.25

我一直收到这个错误：

ERROR com.busytech.barba.exception.BarbaException – java.io.IOException: Cannot run program “C:\Program”: CreateProcess error=2, The system cannot find the file specified
com.busytech.barba.exception.BarbaException: Cannot run program “C:\Program”: CreateProcess error=2, The system cannot find the file specified
at com.busytech.barba.persistence.BackUpAndRestoreDatabaseManager.getTableBackup(BackUpAndRestoreDatabaseManager.java:52)
at com.busytech.barba.servlet.checkcash.CashSummaryServlet.processRequest(CashSummaryServlet.java:95)
at com.busytech.barba.servlet.checkcash.CashSummaryServlet.doPost(CashSummaryServlet.java:495)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:637)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298)
at org.apache.coyote.http11.Http11AprProcessor.process(Http11AprProcessor.java:864)
at org.apache.coyote.http11.Http11AprProtocol$Http11ConnectionHandler.process(Http11AprProtocol.java:579)
at org.apache.tomcat.util.net.AprEndpoint$Worker.run(AprEndpoint.java:1665)
at java.lang.Thread.run(Unknown Source)
java.io.IOException: Cannot run program “C:\Program”: CreateProcess error=2, The system cannot find the file specified
at java.lang.ProcessBuilder.start(Unknown Source)
at java.lang.Runtime.exec(Unknown Source)
at java.lang.Runtime.exec(Unknown Source)
at java.lang.Runtime.exec(Unknown Source)
at com.busytech.barba.persistence.BackUpAndRestoreDatabaseManager.getTableBackup(BackUpAndRestoreDatabaseManager.java:30)
at com.busytech.barba.servlet.checkcash.CashSummaryServlet.processRequest(CashSummaryServlet.java:95)
at com.busytech.barba.servlet.checkcash.CashSummaryServlet.doPost(CashSummaryServlet.java:495)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:637)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298)
at org.apache.coyote.http11.Http11AprProcessor.process(Http11AprProcessor.java:864)
at org.apache.coyote.http11.Http11AprProtocol$Http11ConnectionHandler.process(Http11AprProtocol.java:579)
at org.apache.tomcat.util.net.AprEndpoint$Worker.run(AprEndpoint.java:1665)
at java.lang.Thread.run(Unknown Source)
Caused by: java.io.IOException: CreateProcess error=2, The system cannot find the file specified
at java.lang.ProcessImpl.create(Native Method)
at java.lang.ProcessImpl.(Unknown Source)
at java.lang.ProcessImpl.start(Unknown Source)
… 21 more
347156 [http-8080-4] ERROR com.busytech.barba.exception.BarbaException – java.io.IOException: Cannot run program “C:\Program”: CreateProcess error=2, The system cannot find the file specified
com.busytech.barba.exception.BarbaException: Cannot run program “C:\Program”: CreateProcess error=2, The system cannot find the file specified
at com.busytech.barba.persistence.BackUpAndRestoreDatabaseManager.getTableBackup(BackUpAndRestoreDatabaseManager.java:52)
at com.busytech.barba.servlet.checkcash.CashSummaryServlet.processRequest(CashSummaryServlet.java:95)
at com.busytech.barba.servlet.checkcash.CashSummaryServlet.doPost(CashSummaryServlet.java:495)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:637)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298)
at org.apache.coyote.http11.Http11AprProcessor.process(Http11AprProcessor.java:864)
at org.apache.coyote.http11.Http11AprProtocol$Http11ConnectionHandler.process(Http11AprProtocol.java:579)
at org.apache.tomcat.util.net.AprEndpoint$Worker.run(AprEndpoint.java:1665)
at java.lang.Thread.run(Unknown Source)

这个增加：这就是我所做的尝试{

Process run = null;
        if (System.getProperty("os.name").toLowerCase().contains("window")) {
            run = Runtime.getRuntime().exec(SystemInformation.getWindowsMySQLDump() + " --host=" + host + " --port=" + port
                    + " --user=" + user + " --password=" + password
                    + " --compact --complete-insert --extended-insert "
                    + "--skip-comments --skip-triggers --skip-lock-tables --single-transaction " + database + " " + table);

        } else {
            run = Runtime.getRuntime().exec("mysqldump --host=" + host + " --port=" + port
                    + " --user=" + user + " --password=" + password
                    + " --compact --complete-insert --extended-insert "
                    + "--skip-comments --skip-triggers --skip-lock-tables --single-transaction " + database + " " + table);
        }
        InputStream in = run.getInputStream();
        BufferedReader br = new BufferedReader(new InputStreamReader(in));
        int count;
        char[] cbuf = new char[BUFFER];

        while ((count = br.read(cbuf, 0, BUFFER)) != -1) {
            temp.append(cbuf, 0, count);
        }
        br.close();
        in.close();
    } catch (Exception e) {
        e.printStackTrace();
    }

Answer 1

不确定这是MySQL还是备份问题，但是错误：

无法运行程序“C：\ Program”

看起来你已经忘记在某个字符串的引号周围放置引号。

如果您尝试运行

c:\program files\myapp\something.exe

然后它可能会在第一个空格分裂，所以你试图执行c:\program - 我怀疑它是一个真正的可执行文件。尝试

"c:\program files\myapp\something.exe"

Answer 2

问题是您的应用程序（在您的情况下可能是MySQL）的安装路径。

C：\ Program Files \ MySQL \ bin \ mysql.exe

“程序文件”中的空格会导致问题，您不会在其上加上引号。

“C：\ Program Files \ MySQL \ bin \ mysql.exe”

您可以使用Apache Exec从Java启动进程。这可以处理从Java应用程序启动进程时可能出错的所有常见内容

如果您可以提供有关如何开始此过程的更多信息。

这是我推荐的（使用Apache Commons Exec的实现）。

CommandLine cmdLine = CommandLine.parse("C:\\Program Files\\MySQL\\bin\\mysqldump");
cmdLine.addArgument("--user=");
// add further args here
Executor executor = new DefaultExecutor();
OutputStream stdOut = new ByteArrayOutputStream();
    PumpStreamHandler psh = new PumpStreamHandler(stdOut);
    executor.setStreamHandler(psh);

    try {
        int exitCode = executor.execute(cmdLine);
        String output = stdOut.toString();

        BufferedReader lineReader = new BufferedReader(new StringReader(output));

        String line;
        while ((line = lineReader.readLine()) != null) {
            log.debug("Reading line #{} - '{}'", lineCount, line);
        }

    } catch (IOException e) {
        // handle the exception
    }

Answer 3

这是我使用的解决方案，它的工作方式与windows和linux一样，以上建议使用apache commons exec：

        String cmdline = "mysqldump";
        DefaultExecuteResultHandler resultHandler = new DefaultExecuteResultHandler();
        CommandLine commandLine = CommandLine.parse(cmdline);
        commandLine.addArgument("--host=" + dbhost);
        commandLine.addArgument("--port=" + dbport);
        commandLine.addArgument("--user=" + dbuser);
        commandLine.addArgument("--password=" + dbpass);
        commandLine.addArgument(database);

        Set keys = table.keySet();
        for (Iterator i = keys.iterator(); i.hasNext();) {
            String key = (String) i.next();
            String value = (String) table.get(key);
            commandLine.addArgument(value);
        }
        commandLine.addArgument("-r");
        //outputFile might be a file on the server that can be downloaded
        //used apache file upload to download the files from the server
        commandLine.addArgument(outputFile);
        Executor executor = new DefaultExecutor();
        executor.execute(commandLine, resultHandler);
        resultHandler.waitFor();

要将文件恢复到服务器，上传文件，这里是从mysqldump文件恢复的代码，如果只在Windows上的环境变量上设置了mysql路径，但在linux上它可以正常工作，这是有效的/ p>

        String cmdline = "mysql";
        DefaultExecuteResultHandler resultHandler = new DefaultExecuteResultHandler();
        CommandLine commandLine = CommandLine.parse(cmdline);
        commandLine.addArgument("--user=" + dbuser);
        commandLine.addArgument("--password=" + dbpass);
        commandLine.addArgument("--force");
        commandLine.addArgument("-v");
        commandLine.addArgument("-e");
        commandLine.addArgument("source");
        commandLine.addArgument(backUpFile);
        commandLine.addArgument(database);
        Executor executor = new DefaultExecutor();
        executor.execute(commandLine, resultHandler);
        resultHandler.waitFor();

Windows XP SP3 MySQL自动备份错误

3 个答案: