javaEE Struts2,接收参数封装到List(或Map)集合中

DemoAction.java:

package cn.xxx.c_param;

import java.util.List;
import java.util.Map;

import com.opensymphony.xwork2.ActionSupport;

//struts2 封装集合类型参数
public class DemoAction extends ActionSupport  {
	//list  接收到的参数封装到List集合中
	private List<String> list; // 接收参数的方式:属性驱动。  属性要有对应的getter和setter方法。
	//Map   接收到的参数封装到Map集合中
	private Map<String,String> map;
	
	
	public String execute() throws Exception { 
		System.out.println("list:"+list);
		System.out.println("map:"+map);
		return SUCCESS;
	}

	public List<String> getList() {
		return list;
	}

	public void setList(List<String> list) {
		this.list = list;
	}

	public Map<String, String> getMap() {
		return map;
	}

	public void setMap(Map<String, String> map) {
		this.map = map;
	}

}

form1.jsp(对应的form表单):

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<body>
	<form action="${pageContext.request.contextPath}/DemoAction" method="post" >
		list:<input type="text" name="list" /><br>  <!-- 会封装到List集合中,顺序一个一个挨着排 -->
		list:<input type="text" name="list[3]" /><br>  <!-- 会封装到List集合中的第四个元素的位置 -->
		map:<input type="text" name="map['键']" /><br>  <!-- 会封装到Map集合对应的键上 -->
		<input type="submit" value="提交" />
	</form>
</body>
</html>

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转载自blog.csdn.net/houyanhua1/article/details/81836128
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