1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 <%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%> <!DOCTYPE html > <html > <head > <meta charset ="UTF-8" > <title > Struts2.3 converter</title > </head > <body > <form action ="userAction2.action" > user info 1: <input type ="text" name ="user" /> <br /> user info 2: <input type ="text" name ="user" /> <br /> user info 3: <input type ="text" name ="user" /> <br /> user info 4: <input type ="text" name ="user" /> <br /> <input type ="submit" value ="submit" /> </form > </body > </html >
流程跳转 struts.xml 1 2 3 4 5 6 7 8 9 10 11 12 13 14 <?xml version="1.0" encoding="UTF-8" ?> <!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.3//EN" "http://struts.apache.org/dtds/struts-2.3.dtd" > <struts > <package name ="struts2" extends ="struts-default" > <action name ="userAction2" class ="space.terwer.struts23.UserAction2" > <result name ="success" > /output2.jsp</result > </action > </package > </struts >
业务处理 Action 类 UserAction2 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 package space.terwer.struts23;import java.util.List;import com.opensymphony.xwork2.ActionSupport;import space.terwer.bean.User;public class UserAction2 extends ActionSupport { private List<User> user; public List<User> getUser () { return user; } public void setUser (List<User> user) { this .user = user; } @Override public String execute () throws Exception { for (User u : this .getUser()) { System.out.println(u.getUsername() + "," + u.getPassword()); } return SUCCESS; } }
类型转换器 UserAction2-conversion.properties 1 user =space.terwer.converter.UserConverter3
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 package space.terwer.converter;import java.util.ArrayList;import java.util.List;import java.util.Map;import java.util.StringTokenizer;import org.apache.struts2.util.StrutsTypeConverter;import space.terwer.bean.User;public class UserConverter3 extends StrutsTypeConverter { @Override public Object convertFromString (Map context, String[] values, Class toClass) { List<User> list = new ArrayList <>(); for (String value : values) { StringTokenizer st = new StringTokenizer (value, ";" ); User user = new User (); String username = st.nextToken(); String pasword = st.nextToken(); user.setUsername(username); user.setPassword(pasword); list.add(user); } return list; } @Override public String convertToString (Map context, Object o) { List<User> list = (List) o; StringBuilder sb = new StringBuilder (); sb.append("[" ); for (int i = 0 ; i < list.size(); i++) { User user = list.get(i); sb.append("{username=" + user.getUsername()); sb.append(",password=" + user.getPassword()); sb.append("}" ); if (i < list.size() - 1 ) { sb.append("," ); } } sb.append("]" ); return sb.toString(); } }
输出结果 output2.jsp 1 2 3 4 5 6 7 8 9 10 11 12 13 14 <%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%> <%@ taglib prefix="s" uri="/struts-tags" %> <!DOCTYPE html > <html > <head > <meta charset ="UTF-8" > <title > Struts2.3 converter result</title > </head > <body > <s:property value ="user" /> </body > </html >
效果
大功告成。与单个不一样的地方只在于把对象换成了 List ，其他的类似。
