Java 用带有斜杠的字符串变量替换硬编码字符串

我有以下代码，其中我试图用变量“dumppath”替换转储路径，该变量的字符与我在命令中的字符串中的字符完全相同，但当我用变量替换它时，它总是给我一个IOException，它说系统找不到指定的文件。但对于硬编码路径，它可以正常工作

public String dumppath = "C:\\wamp\\bin\\mysql\\mysql5.6.12\\bin\\mysqldump";

public void backupDatabase() {//GEN-FIRST:event_jButton1ActionPerformed

        try {

            int processComplete; // to verify that either process completed or not

            //Process runtimeProcess = Runtime.getRuntime().exec("C:\\wamp\\bin\\mysql\\mysql5.6.12\\bin\\mysqldump -u root mysql -r F:/backup.sql");
            Process runtimeProcess = Runtime.getRuntime().exec("'"+dumppath+"' -u root mysql -r F:/backup.sql");
// call the mysqldump in terminal and execute it
            processComplete = runtimeProcess.waitFor();//store the state in variable

            if (processComplete == 1) {//if values equal 1 process failed

                JOptionPane.showMessageDialog(null, "Backup Failed");//display message
            } else if (processComplete == 0) {//if values equal 0 process failed
                System.out.println("Backup up : "+backuppath);
                System.out.println("Dump Path : "+dumppath);
                JOptionPane.showMessageDialog(null, "\n Backup created Successfully..\n Check the Backup File in the D: Directory named as backup.sql");
//display message
            }

        } catch (Exception e) {

            JOptionPane.showMessageDialog(null, e);//exeception handling

        }

// TODO add your handling code here:
    }

第一个调用在路径周围没有单引号

Process runtimeProcess = Runtime.getRuntime().exec( "'"+dumppath+"' -u root mysql -r F:/backup.sql");

第一个调用在路径周围没有单引号

Process runtimeProcess = Runtime.getRuntime().exec( "'"+dumppath+"' -u root mysql -r F:/backup.sql");

与

Process runtimeProcess = Runtime.getRuntime().exec(
 "'C:\\wamp\\bin\\mysql\\mysql5.6.12\\bin\\mysqldump' -u root mysql -r F:/backup.sql");

与硬编码字符串相比，它多了两个单引号

要获取原始字符串，应尝试以下操作

String dumppath = "C:\\wamp\\bin\\mysql\\mysql5.6.12\\bin\\mysqldump";
Process runtimeProcess = Runtime.getRuntime().exec( dumppath+" -u root mysql -r F:/backup.sql");

或

与

Process runtimeProcess = Runtime.getRuntime().exec(
 "'C:\\wamp\\bin\\mysql\\mysql5.6.12\\bin\\mysqldump' -u root mysql -r F:/backup.sql");

与硬编码字符串相比，它多了两个单引号

要获取原始字符串，应尝试以下操作

String dumppath = "C:\\wamp\\bin\\mysql\\mysql5.6.12\\bin\\mysqldump";
Process runtimeProcess = Runtime.getRuntime().exec( dumppath+" -u root mysql -r F:/backup.sql");

或

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您的标题似乎暗示字符串不同。@Chieftwo Pencils什么解决方案您的标题似乎暗示字符串不同。@Chieftwo Pencils什么解决方案如果您不需要单引号，请删除它们。如果您不需要单引号，请删除它们。