<?xml version="1.0" encoding="GBK"?> <project name="struts" basedir="." default=""> <property name="dist" value="classes"/> <property name="src" value="src"/> <path id="classpath"> <fileset dir="lib"> <include name="*.jar"/> </fileset> <pathelement path="${dist}"/> </path> <target name="compile" description="Compile all source code"> <delete dir="${dist}"/> <mkdir dir="${dist}"/> <copy todir="${dist}"> <fileset dir="${src}"> <exclude name="**/*.java"/> </fileset> </copy> <javac destdir="classes" debug="true" includeantruntime="yes" deprecation="false" optimize="false" failonerror="true"> <src path="${src}"/> <classpath refid="classpath"/> </javac> </target> </project>
<?xml version="1.0" encoding="GBK"?> <web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd" version="3.1"> <!-- 定义Struts 2的核心Filter --> <filter> <filter-name>struts2</filter-name> <filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter</filter-class> </filter> <!-- 让Struts 2的核心Filter拦截所有请求 --> <filter-mapping> <filter-name>struts2</filter-name> <url-pattern>/*</url-pattern> </filter-mapping> </web-app>
<?xml version="1.0" encoding="GBK"?> <!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.3//EN" "http://struts.apache.org/dtds/struts-2.3.dtd"> <struts> <package name="lee" extends="struts-default"> <action name="login" class="org.crazyit.app.action.LoginAction"> <result>/WEB-INF/content/welcome.jsp</result> <result name="error">/WEB-INF/content/welcome.jsp</result> </action> <action name="*"> <result>/WEB-INF/content/{1}.jsp</result> </action> </package> </struts>
<%-- 网站: <a href="http://www.crazyit.org">疯狂Java联盟</a> author yeeku.H.lee kongyeeku@163.com version 1.0 Copyright (C), 2001-2012, yeeku.H.Lee This program is protected by copyright laws. Program Name: Date: --%> <%@ page contentType="text/html; charset=GBK" language="java" errorPage="" %> <%@taglib prefix="s" uri="/struts-tags"%> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <title>Set属性的类型转换</title> </head> <body> <h3>Set属性的类型转换</h3> <s:form action="login"> <s:textfield name="users" label="第一个用户信息"/> <s:textfield name="users" label="第二个用户信息"/> <s:textfield name="birth" label="用户生日"/> <tr> <td colspan="2"><s:submit value="转换" theme="simple"/> <s:reset value="重填" theme="simple"/></td> </tr> </s:form> </body> </html>
<%@ page language="java" contentType="text/html; charset=GBK"%> <%@taglib prefix="s" uri="/struts-tags"%> <html> <head> <title>转换结果</title> </head> <body> <s:actionmessage/> <s:property value="users"/> <!-- 访问users集合属性里索引属性值为crazyit.org的元素的name属性--> 用户crazyit.org的用户名为:<s:property value="users('crazyit.org').name"/><br/> <!-- 访问users集合属性里索引属性值为crazyit.org的元素的pass属性--> 用户crazyit.org的密码为:<s:property value="users('crazyit.org').pass"/><br/> <!-- 访问users集合属性里索引属性值为fkit的元素的name属性--> 用户fkit的用户名为:<s:property value="users('fkit').name"/><br/> <!-- 访问users集合属性里索引属性值为fkit的元素的pass属性--> 用户fkit的密码为:<s:property value="users('fkit').pass"/><br/> 生日为:<s:property value="birth"/><br/> </body> </html>
<?xml version="1.0" encoding="GBK"?> <!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.3//EN" "http://struts.apache.org/dtds/struts-2.3.dtd"> <struts> <package name="lee" extends="struts-default"> <action name="login" class="org.crazyit.app.action.LoginAction"> <result>/WEB-INF/content/welcome.jsp</result> <result name="error">/WEB-INF/content/welcome.jsp</result> </action> <action name="*"> <result>/WEB-INF/content/{1}.jsp</result> </action> </package> </struts>
package org.crazyit.app.action; import com.opensymphony.xwork2.*; import java.util.Date; import java.util.Set; /** * Description: * <br/>网站: <a href="http://www.crazyit.org">疯狂Java联盟</a> * <br/>Copyright (C), 2001-2012, Yeeku.H.Lee * <br/>This program is protected by copyright laws. * <br/>Program Name: * <br/>Date: * @author Yeeku.H.Lee kongyeeku@163.com * @version 1.0 */ public class LoginAction extends ActionSupport { private Set users; private Date birth; // users的setter和getter方法 public void setUsers(Set users) { this.users = users; } public Set getUsers() { return this.users; } // birth的setter和getter方法 public void setBirth(Date birth) { this.birth = birth; } public Date getBirth() { return this.birth; } // 没有提供execute()方法, // 将直接使用ActionSupport的execute()方法 }
#指定users属性的类型转换器是UserConverter users= org.crazyit.app.converter.UserConverter # 指定users集合属性里集合元素的索引属性是name KeyProperty_users=name
package org.crazyit.app.converter; import java.util.*; import org.apache.struts2.util.StrutsTypeConverter; import org.crazyit.app.domain.*; /** * Description: * <br/>网站: <a href="http://www.crazyit.org">疯狂Java联盟</a> * <br/>Copyright (C), 2001-2016, Yeeku.H.Lee * <br/>This program is protected by copyright laws. * <br/>Program Name: * <br/>Date: * @author Yeeku.H.Lee kongyeeku@163.com * @version 1.0 */ public class UserConverter extends StrutsTypeConverter { public Object convertFromString(Map context , String[] values, Class toClass) { Set result = new HashSet(); for (int i = 0; i < values.length ; i++ ) { // 创建一个User实例 User user = new User(); // 只处理请求参数数组第一个数组元素, // 并将该字符串以英文逗号分割成两个字符串 String[] userValues = values[i].split(","); // 为User实例的属性赋值 user.setName(userValues[0]); user.setPass(userValues[1]); // 将User实例添加到Set集合中 result.add(user); } return result; } public String convertToString(Map context, Object o) { // 如果待转换对象的类型是Set if (o.getClass() == Set.class) { Set users = (Set)o; String result = "["; for (Object obj : users ) { User user = (User)obj; result += "<" + user.getName() + "," + user.getPass() + ">"; } return result + "]"; } else { return ""; } } }
package org.crazyit.app.domain; /** * Description: * <br/>网站: <a href="http://www.crazyit.org">疯狂Java联盟</a> * <br/>Copyright (C), 2001-2012, Yeeku.H.Lee * <br/>This program is protected by copyright laws. * <br/>Program Name: * <br/>Date: * @author Yeeku.H.Lee kongyeeku@163.com * @version 1.0 */ public class User { private String name; private String pass; // name的setter和getter方法 public void setName(String name) { this.name = name; } public String getName() { return this.name; } // pass的setter和getter方法 public void setPass(String pass) { this.pass = pass; } public String getPass() { return this.pass; } public boolean equals(Object obj) { // 如果待比较的两个对象是同一个对象,直接返回true if(this == obj) { return true; } // 只有当obj是User对象 if (obj != null && obj.getClass() == User.class) { User user = (User)obj; // 两个对象的name属性相等即认为二者相等 return this.getName().equals(user.getName()); } return false; } // 根据name计算hashCode public int hashCode() { return name.hashCode(); } }