全局和局部的区别：
1：配置文件不同
全局：src---xwork-conversion.properties---address=nuc.sw.action.AddressConverter
局部：action---actionName-conversion.properties---nuc.sw.vo.Address=nuc.sw.action.AddressConverter
2：显示内容时全局写一个address即可，局部需要写address.province。
一：用户注册信息页面(地址为级联) UserDetails.jsp
1 <%@ page language="java" contentType="text/html; charset=UTF-8" 2 pageEncoding="UTF-8"%> 3 <%@ taglib prefix="s" uri="/struts-tags"%> 4 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> 5 <html> 6 <head> 7 <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> 8 <title>注册页面</title> 9 </head> 10 <body> 11 <s:fielderror></s:fielderror> 12 <form action="UserDetailsAction" method="post"> 13 用户名：<input type="text" name="username" /><br> 14 生日：<input type="text" name="birthday" />(格式为:yyyy-mm-dd)<br> 15 详细地址：<input type="text" name="address">省 16 <input type="text" name="address">市 17 <input type="text" name="address">区<br> 18 <input type="text" name="address"/> 19 <input type="submit" value="注册"> 20 </form> 21 </body> 22 </html>
二：在action写set get方法 nuc.sw.action--->UserDetailsAction.java
1 package nuc.sw.action;
2 import java.util.Date;
3 import com.opensymphony.xwork2.ActionSupport;
4
5 import nuc.sw.vo.Address;
6 public class UserDetailsAction extends ActionSupport{
7 private String username;
8 //注意类型
9 private Date birthday;
10 //必须为Address类型。否则获取不到。
11 private Address address;
12 public Date getBirthday() {
13 return birthday;
14 }
15 public void setBirthday(Date birthday) {
16 this.birthday = birthday;
17 }
18 public String getUsername() {
19 return username;
20 }
21 public void setUsername(String username) {
22 this.username = username;
23 }
24
25
26
27 public Address getAddress() {
28 return address;
29 }
30
31
32 public void setAddress(Address address) {
33 this.address = address;
34 }
35
36
37 public String RegisterMethod() throws Exception {
38 return SUCCESS;
39 }
40
41 }
三：获取Address类型 所以写Address.java --->nuc.sw.vo
package nuc.sw.vo;
public class Address {
private String province;
private String city;
private String county;
private String street;
public Address(String province, String city, String county, String street) {
super();
this.province = province;
this.city = city;
this.county = county;
this.street = street;
}
public String getProvince() {
return province;
}
public void setProvince(String province) {
this.province = province;
}
public String getCity() {
return city;
}
public void setCity(String city) {
this.city = city;
}
public String getCounty() {
return county;
}
public void setCounty(String county) {
this.county = county;
}
public String getStreet() {
return street;
}
public void setStreet(String street) {
this.street = street;
}
}
四：配置struts.xml
1 <?xml version="1.0" encoding="UTF-8" ?> 2 <!DOCTYPE struts PUBLIC 3 "-//Apache Software Foundation//DTD Struts Configuration 2.3//EN" 4 "http://struts.apache.org/dtds/struts-2.3.dtd"> 5 6 <struts> 7 <constant name="struts.devMode" value="true" /> 8 <package name="default" namespace="/" extends="struts-default"> 9 <action name="UserDetailsAction" class="nuc.sw.action.UserDetailsAction" method="RegisterMethod"> 10 <result>/showUserDetails.jsp</result> 11 <result name="input">/UserDetails.jsp</result> 12 </action> 13 </package> 14 </struts>
五：用户提交信息后进行显示 showUserDetails.jsp
生日的月份需要MM---mm指时间
1 <%@ page language="java" contentType="text/html; charset=utf-8" 2 pageEncoding="utf-8"%> 3 <%@ taglib prefix="s" uri="/struts-tags"%> 4 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> 5 <html> 6 <head> 7 <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> 8 <title>注册成功后登录</title> 9 </head> 10 <body> 11 用户名：<s:property value="username"/><br> 12 生日： <s:date name="birthday" format="yyyy-MM-dd"/><br> 13 您的详细地址为：<br> 14 <s:property value="address"/> 15 16 17 18 </body> 19 </html>
六：提交的地址信息为字符串String,最后要以对象的形式输出，所以需要自定义转换器
nuc.sw.action--->AddressConverter.java
1 package nuc.sw.action;
2
3 import java.util.Map;
4
5 import org.apache.struts2.util.StrutsTypeConverter;
6 import nuc.sw.vo.Address;
7 public class AddressConverter extends StrutsTypeConverter {
8
9 /*
10 *1:转换器必须继承StrutsTypeConverter
11 *2:自带方法 字符串转为value(address)
12 *3:自带方法 value转为字符串
13 */
14 @Override
15 public Object convertFromString(Map arg0, String[] arg1, Class arg2) {
16
17 //此处可以简略代码，但是必须在Address.java写构造方法
18 Address address=new Address(arg1[0],arg1[1],arg1[2],arg1[3]);
19
20 //String[]中放Address中的4个值
21 // address.setProvince(arg1[0]);
22 // address.setCity(arg1[1]);
23 // address.setCounty(arg1[2]);
24 // address.setStreet(arg1[3]);
25 return address;
26 }
27
28
29 @Override
30 public String convertToString(Map arg0, Object arg1) {
31 //ag1是父类，Address是子类，需要强制转换。
32 if(arg1 instanceof Address){
33 Address a=(Address)arg1;
34 return a.getProvince()+"省"+a.getCity()+"市"+a.getCounty()+"区"+a.getStreet();
35 }
36 else
37 return null;
38 }
39
40 }
七：局部转换器 ---写src中属性名建的配置文件
1 nuc.sw.vo.Address=nuc.sw.action.AddressConverter
八：项目结构：
九：运行结果：
