<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8" %>
<%@ taglib prefix="s" uri="/struts-tags" %>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<base href="<%=basePath%>">
<title>My JSP 'prepare.jsp' starting page</title>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
<!--
<link rel="stylesheet" type="text/css" href="styles.css">
-->
</head>
<body>
<s:form action="PrepareAction">
<s:textfield name="id" label="Your id" />
<s:select name="name" list="#request.list" label="select a name"/>
<s:submit/>
</s:form>
</body>
</html>
import java.util.List;
import java.util.Arrays;
import java.util.Map;
import com.opensymphony.xwork2.ActionSupport;
import com.opensymphony.xwork2.Preparable;
import org.apache.struts2.interceptor.RequestAware;
import org.springframework.context.annotation.Scope;
import org.springframework.stereotype.Controller;
@SuppressWarnings("all")
@Scope("prototype")
@Controller("prepareAction")
public class PrepareAction extends ActionSupport implements Preparable, RequestAware {
@Override
public String execute() {
System.out.println("in execute... id = " + this.getId() + ", name = " + this.getName());
return SUCCESS;
}
@Override
public void validate() {
if (this.getId() == null || this.getId().length() == 0) {
this.addFieldError("id", "Id is required.");
}
System.out.println("in validate...");
}
@Override
public void prepare() throws Exception {
List<String> list = Arrays.asList("chenzq", "jaeson", "czq");
this.getRequest().put("list", list);
System.out.println("in prepare...");
}
private Map<String, Object> request;
private String id;
private String name;
public Map<String, Object> getRequest() {
return request;
}
public void setRequest(Map<String, Object> request) {
this.request = request;
}
public String getId() {
return id;
}
public void setId(String id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
}
在struts.xml中的配置：
<!-- prepare 验证失败返回列表信息丢失，使用prepare每次提交时将list数据放入request中 -->
<action name="PrepareAction" class="prepareAction">
<result name="success">/welcome.jsp</result>
<result name="input">/prepare.jsp</result>
</action>
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