struts开发<struts中的參数传递.三>

时间：2021-10-15 17:02:52

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="username"/>--><s:property value="password"/>

</body>

</html></span>


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


struts开发&lt;struts中的參数传递.三&gt;




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


struts开发&lt;struts中的參数传递.三&gt;




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="#request.username"/>--><s:property value="#request.password"/></span>

</body>

</html></span>


struts开发&lt;struts中的參数传递.三&gt;


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


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