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struts开发<struts中的參数传递.三>

2024-09-15 13:44:13   215人阅读

不说废话，直接上干货


1.通过set和get传递參数

添加username 和password两个属性并添加set和get方法

package fzl.user.struts.demo;

import com.opensymphony.xwork2.ActionContext;
import com.opensymphony.xwork2.ActionSupport;

public class UserAction 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 list(){
	
	System.out.println("list");
	return "success";
}
public String input(){
	System.out.println("input");
	return "success";
}	

public String add(){
	
	System.out.println("add");
return "success";
}}



在list使用EL表达式和struts标签调用 

<pre name="code" class="html"><span style="font-size:18px;"><%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8" %>
    <%@ taglib prefix="s" uri="/struts-tags" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<body>
通过EL訪问
${username }-->${password }
<h1>------------------list -----------------</h1>
通过struts标签訪问
<s:property value="http://www.mamicode.com/username"/>--><s:property value="http://www.mamicode.com/password"/>
</body>
</html></span>

在浏览器输入http://localhost:9000/strustDemo1/User_list?username=fzl&password=123 传入參数



技术分享






另外一种方法，通过Actioncontext完毕




<span style="font-size:18px;">package fzl.user.struts.demo;

import com.opensymphony.xwork2.ActionContext;
import com.opensymphony.xwork2.ActionSupport;

public class UserAction 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 list(){
	ActionContext.getContext().put("username", "flyou");
	ActionContext.getContext().put("password", "553274238");
	System.out.println("list");
	return "success";
}
public String input(){
	System.out.println("input");
	return "success";
}	

public String add(){
	
	System.out.println("add");
return "success";
}}</span>
list文件不用改动







技术分享
















第三种方法。通过servletAPI传值














<span style="font-size:18px;">package fzl.user.struts.demo;

import org.apache.struts2.ServletActionContext;

import com.opensymphony.xwork2.ActionContext;
import com.opensymphony.xwork2.ActionSupport;

public class UserAction 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 list(){
	//ActionContext.getContext().put("username", "flyou");
	//ActionContext.getContext().put("password", "553274238");
	ServletActionContext.getRequest().setAttribute("username", "flyou");
	ServletActionContext.getRequest().setAttribute("password", "553274238");
	System.out.println("list");
	return "success";
}
public String input(){
	System.out.println("input");
	return "success";
}	

public String add(){
	
	System.out.println("add");
return "success";
}}</span>


list文件





<span style="font-size:18px;"><%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8" %>
    <%@ taglib prefix="s" uri="/struts-tags" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<body>
通过EL訪问
${username }-->${password }
<h1>------------------list -----------------</h1>
通过struts标签訪问
<span style="background-color: rgb(204, 0, 0);"><s:property value="http://www.mamicode.com/#request.username"/>--><s:property value="http://www.mamicode.com/#request.password"/></span>
</body>
</html></span>
技术分享



获取的三种方式


1.通过seter和geter方法接受并传递


2.通过ActionContext.getContext().put("username", "flyou");传递參数


3.通过 ServletActionContext.getRequest.setAttribute("","")传值









   

struts开发&lt;struts中的參数传递.三&gt;






























        

            
                
                  
                
                

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