struts2 中获取表单数据的三种方法

最新推荐文章于 2019-08-20 17:40:50 发布

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本文介绍了三种在Struts2框架中处理表单提交数据的方法，包括使用ActionContext获取参数、通过ServletActionContext直接获取HttpServletRequest对象，以及实现ServletRequestAware接口。每种方法都附带了详细的代码示例。

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Hello.jsp页面代码如下：

方法一：

public class form1 extends ActionSupport {

public String execute()
{
//利用ActionContext对象获取
ActionContext context = ActionContext.getContext();

//调用方法获取表单数据
Map<String,Object> map = context.getParameters();

//将Map转化为set可以用来遍历
Set<String> keys = map.keySet();

for(String key:keys)
{
Object[] objs=(Object[])map.get(key);
System.out.println(Arrays.toString(objs));
}

return NONE;
}
}

方法二（最为常用的方法）：

public class form2 extends ActionSupport{

public String execute()
{
HttpServletRequest request = ServletActionContext.getRequest();

String name = request.getParameter("username");
String pwd = request.getParameter("password");
String address = request.getParameter("address");

System.out.println(name+" "+pwd+" "+address);

return NONE;
}

}

方法三：

public class form3 extends ActionSupport implements ServletRequestAware{

HttpServletRequest request;
public void setServletRequest(HttpServletRequest request)
{
this.request = request;
}
public String execute()
{
String name = request.getParameter("username");
String password = request.getParameter("password");
String address = request.getParameter("address");

System.out.println(name + " "+password+" "+address);

return NONE;

}
}

strutsxml 配置：

<struts>
<package name="hellodeno" extends="struts-default" namespace="/">
<global-results><result name="success">/Hello.jsp</result></global-results>

<action name = "Form1" class = "com.grl.form1"></action>
<action name = "Form2" class = "com.grl.form2"></action>
<action name = "Form3" class = "com.grl.form3"></action>
<action name = "Form4" class = "com.grl.form4"></action>

</package>
</struts>