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                            依據前面制定的規范，我們新建DeleteAction

# DeleteAction

```
package com.mengyunzhi.javaee.action.klass;

import com.mengyunzhi.javaee.action.Action;
import com.opensymphony.xwork2.validator.annotations.RequiredFieldValidator;

public class DeleteAction extends Action{
    private static final long serialVersionUID = 1L;
    private Long id;

    public Long getId() {
        return id;
    }
    
    @RequiredFieldValidator(message = "必須傳入ID")
    public void setId(Long id) {
        if (id == 100L) {
            this.addActionError("尚有學生位于該班級中，刪除失敗");
        }
        this.id = id;
    }
    
    public String execute() {
        return SUCCESS;
    }
    
}
```


# 測試
![./image/6.2.1.png](./image/6.2.1.png)

![./image/6.2.2.png](./image/6.2.2.png)

![./image/6.2.3.png](./image/6.2.3.png)


<hr />

> git checkout -f step12.6.2

                    
                
        
                
            
        
                
    
                
    
                
        
                
    
                

                







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