後臺返回前臺

1，java生成infoStuString

private String infoStuString;

public String getInfoStuString() {
return infoStuString;
}
public void setInfoStuString(String infoStuString) {
this.infoStuString = infoStuString;
}

並存在get和set方法

2，

setInfoStuString("表格列數不為4");

    infoString 中放入你想返回頁面的資訊

3，頁面獲得infoString

<td style="color:red"><s:property value="infoStuString"/></td>
 

前臺提交給後臺

1，jsp程式碼

<td>
        <form action="importTeas" method=post>  
		       <input type="file"  name="excelTea"/>  
			   <input type="submit"  value="匯入Excel" onclick="importEmp()"/> 
	 </form> 
       </td>

HttpServletRequest request = ServletActionContext.getRequest ();
        String excelPath = request.getParameter("excelTea");