struts开发<struts中的參数传递.三>
Posted lxjshuju
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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
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
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>
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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