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- [ ] I have searched the [issues](https://github.com/apache/dubbo/issues) of this repository and believe that this is not a duplicate.

### Environment

* Dubbo version: 3.0.6
* Operating System version: MacOS 10.15.7
* Java version: 1.8.0_231

### Steps to reproduce this issue

1. telnet命令含有空格会做分割
![image](https://user-images.githubusercontent.com/16982273/182756257-90844693-7c46-4b0d-be5a-c599c474f141.png)

2. 如果是Date类型，Dubbo定义了转换格式为yyyy-mm-dd HH:mm:ss，所以目前试了用转义字符替代空格的方法，但都不行。
![image](https://user-images.githubusercontent.com/16982273/182756622-12d8c756-5ded-4ae0-a662-32f729af306d.png)

3. Dubbo2.7.4.1版本使用相同的invoke命令可以正常调用

Pls. provide [GitHub address] to reproduce this issue.

### Expected Behavior

<!-- What do you expect from the above steps？-->

### Actual Behavior

<!-- What actually happens? -->

If there is an exception, please attach the exception trace:

```
Just put your stack trace here!
```


2. xxx
3. xxx

Pls. provide [GitHub address] to reproduce this issue.

### Expected Behavior

<!-- What do you expect from the above steps？-->

### Actual Behavior

<!-- What actually happens? -->

If there is an exception, please attach the exception trace:

```
Just put your stack trace here!
```

public static final CommandContext decode(String str) {
        CommandContext commandContext = null;
        if (!StringUtils.isBlank(str)) {
            String[] array = str.split("(?<![\\\\]) ");
            if (array.length > 0) {
                String name = array[0];
                String[] targetArgs = new String[array.length - 1];
                System.arraycopy(array, 1, targetArgs, 0, array.length - 1);
                commandContext = CommandContextFactory.newInstance( name, targetArgs,false);
                commandContext.setOriginRequest(str);
            }
        }
        return commandContext;
    }
}