struts

客官°小女子只卖身不卖艺 2021-11-06 00:40 333阅读 0赞

一：环境搭配

Struts的环境搭建基于Maven

在项目中的pom.xml加入struts:[http://maven.apache.org/download.cgi][http_maven.apache.org_download.cgi]

![1691435-20190724154156767-1758000180.png][]

二：导入配置文件

![1691435-20190724154431088-887577829.png][]

三：配置xml

![1691435-20190724154751359-1803850610.png][]

user

package com.zl;
    
    public class User {
    
        private String uid;
        private String uname;
        public String getUid() {
            return uid;
        }
        public void setUid(String uid) {
            this.uid = uid;
        }
        public String getUname() {
            return uname;
        }
        public void setUname(String uname) {
            this.uname = uname;
        }
        @Override
        public String toString() {
            return "User [uid=" + uid + ", uname=" + uname + "]";
        }
        public User(String uid, String uname) {
            super();
            this.uid = uid;
            this.uname = uname;
        }
        public User() {
            super();
            // TODO Auto-generated constructor stub
        }
        
    }

HelloAction

package com.zl.web;
    
    import javax.servlet.ServletResponse;
    import javax.servlet.http.HttpServletRequest;
    import javax.servlet.http.HttpServletResponse;
    
    import org.apache.struts2.ServletActionContext;
    import org.apache.struts2.interceptor.ServletRequestAware;
    import org.apache.struts2.interceptor.ServletResponseAware;
    import org.omg.PortableInterceptor.SUCCESSFUL;
    
    import com.zl.User;
    import com.opensymphony.xwork2.ActionContext;
    import com.opensymphony.xwork2.ModelDriven;
    
    /**
     * 1.动态方法调用（MVC不具备的优势） 
     * 2.Struts中的参数 
     *  1.set传参
     *  2.参数名属性名传参 
     *  3实现modeldriven接口传参
     * 3.struts与tomacat的交互 如何将后台的值传到前台去 
     *  1.request传值
     * 
     * 
     *
     */
    public class HelloAction implements ModelDriven<User>,ServletRequestAware,ServletResponseAware {
    
        private HttpServletRequest request;
        private HttpServletResponse response;
        private User user1 = new User();
        private User user2;
        private String sex;
        private String uname;
        
        public String getUname() {
            return uname;
        }
    
        public void setUname(String uname) {
            this.uname = uname;
        }
    
        public User getUser2() {
            return user2;
        }
    
        public void setUser2(User user2) {
            this.user2 = user2;
        }
    
        public String getSex() {
            return sex;
        }
    
        public void setSex(String sex) {
            this.sex = sex;
        }
    
        public String add() {
            System.out.println("add方法");
            return "success";
        }
    
        public String del() {
            System.out.println("del方法");
            return "success";
        }
    
        public String edit() {
            System.out.println("edit方法");
            return "success";
        }
    
        public String list() {
            System.out.println("list方法");
            System.out.println("user1:" + user1);
            System.out.println("user2:" + user2);
            System.out.println("sex:" + sex);
            System.out.println("uname:"+uname);
    //        HttpServletRequest request= ServletActionContext.getRequest();
    //        request.setAttribute("rs",user1);
            this.request.setAttribute("rs", user1);
            return "success";
        }
    
        @Override
        public User getModel() {
            // TODO Auto-generated method stub
            return user1;
        }
    
        @Override
        public void setServletRequest(HttpServletRequest request) {
            this.request=request;
        }
    
        @Override
        public void setServletResponse(HttpServletResponse response) {
            this.response=response;
        }
    
    }

jsp页面测试

<%@ page language="java" contentType="text/html; charset=UTF-8"
        pageEncoding="UTF-8"%>
    <!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>
    <h2>struts传参的三种方式</h2>
    <a href="${pageContext.request.contextPath }/sy/hello_list.action?uid=001&&uname=zs">测试modeldriven接口传参</a>
    <a href="${pageContext.request.contextPath }/sy/hello_list.action?sex=nv">测试set接口传参</a>
    <a href="${pageContext.request.contextPath }/sy/hello_list.action?user2.uid=002&&user2.uname=ls">测试参数名.属性名接口传参</a>
    <h2>与J2EE容器的交互</h2>
    </body>
    </html>

jsp页面接受结果

注入与非注入

注入，注入需要实现ServletRequestAware接口，重写需要实现的方法setServletRequest；

将setServletRequest方法的参数私有化作为属性

package com.zl.web;
    
    import javax.servlet.http.HttpServlet;
    import javax.servlet.http.HttpServletRequest;
    import javax.servlet.http.HttpServletResponse;
    
    import org.apache.struts2.ServletActionContext;
    import org.apache.struts2.interceptor.ServletRequestAware;
    import org.apache.struts2.interceptor.ServletResponseAware;
    
    import com.opensymphony.xwork2.ActionContext;
    import com.opensymphony.xwork2.ModelDriven;
    
    public class HelloAction implements ModelDriven<User>,ServletRequestAware{
    /**
     * 1.动态方法调用（mvc不具备的优势）
     * 
     * 2.struts中的传参
     *  2.1 set 传参
     *  2.2 参数名点属性名
     *  2.3实现modeldriven接口传参
     *  
     * 3.struts 与tomcat的交互
     * 3.1如何将后台的值传到前台去
     * 1 req 传值
     * 2 值栈传值（get方法）
     * @return
     */
    	private HttpServletRequest requst;
    	
    	private User user1=new User();
    	private User user2;
    	private String sex;
    	
    	public User getUser2() {
    		return user2;
    	}
    	public void setUser2(User user2) {
    		this.user2 = user2;
    	}
    	public String getSex() {
    		return sex;
    	}
    	public void setSex(String sex) {
    		this.sex = sex;
    	}
    	public String add() {
    		System.out.println("add。。。。");
    		return "success";
    	}
    	public String del() {
    		System.out.println("del。。。。");
    		return "success";
    	}
    	public String update() {
    		System.out.println("update。。。。");
    		return "success";
    	}
    	public String list() {
    		System.out.println("list。。。。");
    		System.out.println("user1:"+user1);
    		System.out.println("user2:"+user2);
    		System.out.println("sex:"+sex);
    		
    //		HttpServletRequest request=ServletActionContext.getRequest();
    //		request.setAttribute("rs",user1);
    		this.requst.setAttribute("rs", user1);
    		
    		return "success";
    	}
    	@Override
    	public User getModel() {
    		// TODO Auto-generated method stub
    		return user1;
    	}
    	@Override
    	public void setServletRequest(HttpServletRequest requst) {
    		// TODO Auto-generated method stub
    		this.requst=requst;
    		
    	}
    	
    	
    }

非注入

package com.zl.web;
    
    import javax.servlet.http.HttpServlet;
    import javax.servlet.http.HttpServletRequest;
    import javax.servlet.http.HttpServletResponse;
    
    import org.apache.struts2.ServletActionContext;
    import org.apache.struts2.interceptor.ServletRequestAware;
    import org.apache.struts2.interceptor.ServletResponseAware;
    
    import com.opensymphony.xwork2.ActionContext;
    import com.opensymphony.xwork2.ModelDriven;
    
    public class HelloAction implements ModelDriven<User>,ServletRequestAware{
    /**
     * 1.动态方法调用（mvc不具备的优势）
     * 
     * 2.struts中的传参
     *  2.1 set 传参
     *  2.2 参数名点属性名
     *  2.3实现modeldriven接口传参
     *  
     * 3.struts 与tomcat的交互
     * 3.1如何将后台的值传到前台去
     * 1 req 传值
     * 2 值栈传值（get方法）
     * @return
     */
    	private HttpServletRequest requst;
    	
    	private User user1=new User();
    	private User user2;
    	private String sex;
    	
    	public User getUser2() {
    		return user2;
    	}
    	public void setUser2(User user2) {
    		this.user2 = user2;
    	}
    	public String getSex() {
    		return sex;
    	}
    	public void setSex(String sex) {
    		this.sex = sex;
    	}
    	public String add() {
    		System.out.println("add。。。。");
    		return "success";
    	}
    	public String del() {
    		System.out.println("del。。。。");
    		return "success";
    	}
    	public String update() {
    		System.out.println("update。。。。");
    		return "success";
    	}
    	public String list() {
    		System.out.println("list。。。。");
    		System.out.println("user1:"+user1);
    		System.out.println("user2:"+user2);
    		System.out.println("sex:"+sex);
    		HttpServletRequest request=ServletActionContext.getRequest();
    		request.setAttribute("rs",user1);
    //		this.requst.setAttribute("rs", user1);
    		
    		return "success";
    	}
    	@Override
    	public User getModel() {
    		// TODO Auto-generated method stub
    		return user1;
    	}
    	@Override
    	public void setServletRequest(HttpServletRequest requst) {
    		// TODO Auto-generated method stub
    		this.requst=requst;
    		
    	}
    	
    	
    }

转载于:https://www.cnblogs.com/BAYOUA/p/11250920.html

[http_maven.apache.org_download.cgi]: http://maven.apache.org/download.cgi
[1691435-20190724154156767-1758000180.png]: /images/20211104/ed532df406bd4aa1a77e2616464728b2.png
[1691435-20190724154431088-887577829.png]: /images/20211104/4c07587128f14fa88eb05e7f9c0bf520.png
[1691435-20190724154751359-1803850610.png]: /images/20211104/0b43751dfded40f583209b7755d45b34.png