接收表单参数-深入Struts2
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2022-04-18 21:26:22
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一 接收表单参数的三种方式
二 第一方式——使用Action属性接收参数
1、login.jsp
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%
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 'login.jsp' starting page</title>
<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>
<form action="LoginAction.action" method="post">
用户名：<input type="text" name="username">
密码：<input type="password" name="password">
<input type="submit" value="提交" />
</form>
</body>
</html>
2、struts.xml文件
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.1//EN" "http://struts.apache.org/dtds/struts-2.1.dtd";>
<struts>
<package name="default" namespace="/" extends="struts-default">
<default-action-ref name="index"></default-action-ref>
<action name="index">
<result>/error.jsp</result>
</action>
<action name="*_*_*" method="{2}" class="com.cakin.{3}.{1}Action">
<result>/result.jsp</result>
<result name="add">/{2}.jsp</result>
<result name="update">/{2}.jsp</result>
</action>
<action name="LoginAction" method="login" class="com.cakin.action.LoginAction">
<result>/success.jsp</result>
</action>
</package>
</struts>
3、LoginAction.java
package com.cakin.action;
import com.opensymphony.xwork2.ActionSupport;
public class LoginAction extends ActionSupport {
private String username;
private String password;
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
public String login(){
System.out.println(username);
return SUCCESS;
}
}
4、success.jsp
<%@ page language="java" import="java.util.*" pageEncoding="ISO-8859-1"%>
<%
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 'success.jsp' starting page</title>
<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>
This is success JSP page. <br>
</body>
</html>
5、测试
三 第二方式——使用Domain Model接收参数
1、login.jsp
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%
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 'login.jsp' starting page</title>
<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>
<form action="LoginAction.action" method="post">
用户名：<input type="text" name="user.username">
密码：<input type="password" name="user.password">
<input type="submit" value="提交" />
</form>
</body>
</html>
2、struts.xml文件
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.1//EN" "http://struts.apache.org/dtds/struts-2.1.dtd";>
<struts>
<package name="default" namespace="/" extends="struts-default">
<default-action-ref name="index"></default-action-ref>
<action name="index">
<result>/error.jsp</result>
</action>
<action name="*_*_*" method="{2}" class="com.cakin.{3}.{1}Action">
<result>/result.jsp</result>
<result name="add">/{2}.jsp</result>
<result name="update">/{2}.jsp</result>
</action>
<action name="LoginAction" method="login" class="com.cakin.action.LoginAction">
<result>/success.jsp</result>
</action>
</package>
</struts>
3、LoginAction.java
package com.cakin.action;
import com.cakin.po.User;
import com.opensymphony.xwork2.ActionSupport;
public class LoginAction extends ActionSupport {
private User user;
public User getUser() {
return user;
}
public void setUser(User user) {
this.user = user;
}
public String login(){
System.out.println(user.getUsername());
return SUCCESS;
}
}
4、User.java
package com.cakin.po;
public class User {
private String username;
private String password;
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
}
5、测试
四 第三方式——使用ModelDriven接收参数
1、login.jsp
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%
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 'login.jsp' starting page</title>
<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>
<form action="LoginAction.action" method="post">
用户名：<input type="text" name="username">
密码：<input type="password" name="password">
<input type="submit" value="提交" />
</form>
</body>
</html>
2、LoginAction.java
package com.cakin.action;
import com.cakin.po.User;
import com.opensymphony.xwork2.ActionSupport;
import com.opensymphony.xwork2.ModelDriven;
public class LoginAction extends ActionSupport implements ModelDriven<User>{
private User user =new User();
public String login(){
System.out.println(user.getUsername());
return SUCCESS;
}
@Override
public User getModel() {
// TODO Auto-generated method stub
return user;
}
}
3、测试
五 综合——使用ModelDriven接收列表参数
1、login.jsp
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%
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 'login.jsp' starting page</title>
<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>
<form action="LoginAction.action" method="post">
用户名：<input type="text" name="username">
密码：<input type="password" name="password">
书籍1：<input type="text" name="booklist[0]">
书籍2：<input type="text" name="booklist[1]">
<input type="submit" value="提交" />
</form>
</body>
</html>
2、User.java
package com.cakin.po;
import java.util.List;
public class User {
private String username;
private String password;
private List<String> booklist;
public List<String> getBooklist() {
return booklist;
}
public void setBooklist(List<String> booklist) {
this.booklist = booklist;
}
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
}
3、LoginAction.java
package com.cakin.action;
import com.cakin.po.User;
import com.opensymphony.xwork2.ActionSupport;
import com.opensymphony.xwork2.ModelDriven;
public class LoginAction extends ActionSupport implements ModelDriven<User>{
private User user =new User();
public String login(){
System.out.println(user.getUsername());
System.out.println(user.getBooklist().get(0));
System.out.println(user.getBooklist().get(1));
return SUCCESS;
}
@Override
public User getModel() {
// TODO Auto-generated method stub
return user;
}
}
4、测试
六 综合——使用ModelDriven接收对象参数
1、login.jsp
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%
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 'login.jsp' starting page</title>
<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>
<form action="LoginAction.action" method="post">
用户名：<input type="text" name="username">
密码：<input type="password" name="password">
书籍1：<input type="text" name="booklist[0].username">
书籍2：<input type="text" name="booklist[1].username">
<input type="submit" value="提交" />
</form>
</body>
</html>
2、User.java
package com.cakin.po;
import java.util.List;
public class User {
private String username;
private String password;
private List<User> booklist;
public List<User> getBooklist() {
return booklist;
}
public void setBooklist(List<User> booklist) {
this.booklist = booklist;
}
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
}
3、LoginAction.java
package com.cakin.action;
import com.cakin.po.User;
import com.opensymphony.xwork2.ActionSupport;
import com.opensymphony.xwork2.ModelDriven;
public class LoginAction extends ActionSupport implements ModelDriven<User>{
private User user =new User();
public String login(){
System.out.println(user.getUsername());
System.out.println(user.getBooklist().get(0).getUsername());
System.out.println(user.getBooklist().get(1).getUsername());
return SUCCESS;
}
@Override
public User getModel() {
// TODO Auto-generated method stub
return user;
}
}
4、测试
