Struts之CURD

1、新建Maven项目（详细借鉴上一篇） 2、导入pom.xml依赖（jar依赖）

web.xml改成3.1

导入struts相关的配置文件

jdk1.5-->1.8-->同时pom.xml需要添加plugins>plugin

web.2.3-->3.1

3、导入pom.xml依赖 4、baseAction

 继承 ActionSupport

实现 ServletRequestAware,ServletResponseAware,ModelDriven

①、对于常用的结果进行统一管理，编码错误问题 ②、关于tomcat集成常用对象进行统一管理，如：request、response、session ③、封装了携带到页面的常量

package com.zking.util;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

import org.apache.struts2.interceptor.ServletRequestAware;
import org.apache.struts2.interceptor.ServletResponseAware;

import com.opensymphony.xwork2.ActionSupport;
import com.opensymphony.xwork2.ModelDriven;

public abstract class  baseAction extends ActionSupport implements ServletRequestAware,ServletResponseAware,ModelDriven{
	protected HttpServletResponse resp;
	protected HttpServletRequest req;
	protected HttpSession session;
	
//1、编码习惯问题，容易出现大小写配置错误
	protected static final String LIST="list";
	protected static final String TOLIST="toList";
	protected static final String TOEDIT="toEdit";
//	2、每个子控制器都要实现对应接口，拿到request、response对象
	@Override
	public void setServletResponse(HttpServletResponse arg0) {
		this.resp=arg0;
		
	}
	@Override
	public void setServletRequest(HttpServletRequest arg0) {
		this.req=arg0;
		this.session=arg0.getSession();
	}
	
//	3、向前端页面反馈的数据变量不统一
	protected Object result;
	protected String msg;
	protected int code;
	public Object getResult() {
		return result;
	}
	public void setResult(Object result) {
		this.result = result;
	}
	public String getMsg() {
		return msg;
	}
	public void setMsg(String msg) {
		this.msg = msg;
	}
	public int getCode() {
		return code;
	}
	public void setCode(int code) {
		this.code = code;
	}
	
	
	
}

5、ClzAction

package com.dhm.web;

import com.dhm.dao.ClzDao;
import com.dhm.entity.Clz;
import com.zking.util.baseAction;
import com.zking.util.PageBean;

public class ClzAction extends baseAction{
       private Clz clz=new Clz();
       private ClzDao clzDao=new ClzDao();
       
      @Override
    public Clz getModel() {
    	// TODO Auto-generated method stub
    	return clz;
    }
       
       public String list() throws Exception{
    	   PageBean pageBean=new PageBean();
    	   pageBean.setRequest(req);
    	   this.result=this.clzDao.list(clz, pageBean);
    	   this.req.setAttribute("result", result);
    	   this.req.setAttribute("pageBean", pageBean);
    	   return LIST;
       }
       
       public String toEdit() throws Exception{
    	   int cid = clz.getCid();
   		if(cid!=0) {
   			this.result=this.clzDao.list(clz, null).get(0);
   			this.req.setAttribute("result", result);
   		}
    	   return TOEDIT;
       }
       
       
       public String add() throws Exception{
    	   this.clzDao.add(clz);
    	   return TOLIST;
       }
       
       
       public String edit() throws Exception{
    	   this.clzDao.edit(clz);
    	   return TOLIST;
       }
	
       
       public String del() throws Exception{
    	   this.clzDao.del(clz);
    	   return TOLIST;
       }
       
}

5、ClzDao

package com.dhm.dao;

import java.util.List;

import com.dhm.entity.Clz;
import com.zking.util.baseDao;
import com.zking.util.PageBean;

public class ClzDao extends baseDao{

	public List list(Clz clz, PageBean pageBean) throws Exception {
		String sql="select * from t_struts_class where 1=1";
		int cid = clz.getCid();
		if(cid!=0) {
			sql+=" and cid = "+cid;
		}
		
		return super.executeQuery(sql, Clz.class, pageBean);
	}
	
	
		public void add( Clz t) throws Exception {
			String sql="insert into t_struts_class values(?,?,?,?)";
			super.executeUpdate(sql, t, new String[] {"cid","cname","cteacher","pic"});
		}
	
	
		public void edit( Clz t) throws Exception {
			String sql="update t_struts_class set cname=?,cteacher=?,pic=? where cid=?";
			super.executeUpdate(sql, t, new String[] {"cname","cteacher","pic","cid"});
		}
		
		
		public void del( Clz t) throws Exception {
			String sql="delete from t_struts_class where cid=?";
			super.executeUpdate(sql, t, new String[] {"cid"});
		}
	
}

7、struts-sy.xml配置

  type属性有四个选项：
             1、默认forward:标签体对应的转发页面；
             2、action:标签体对应的转发的Action后台方法；
             3、redirect：标签体对应的重定向方法：
             4、redirectAction:标签体对应的重定向；

    
           
      /clz_list
      /clzList.jsp
      /clzEdit.jsp
      
    

8、界面 clzList.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"
	pageEncoding="UTF-8"%>
<%@ taglib uri="http://jsp.veryedu.cn" prefix="z"%>	
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>	









.page-item input {
	padding: 0;
	width: 40px;
	height: 100%;
	text-align: center;
	margin: 0 6px;
}


.page-item input, .page-item b {
	line-height: 38px;
	float: left;
	font-weight: 400;
}

.page-item.go-input {
	margin: 0 10px;
}



	

		
			


				
		
		查询
		新增
	

	
			

		

			

				
ID
				
班级名
				
教员
				
图片
				
操作
			
		
		

			

				
${b.cid }
				
${b.cname }
				
${b.cteacher }
				
${b.pic }
				

					修改
					删除
				
			
			
		
	
	
		

clzEdit.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"
	pageEncoding="UTF-8"%>
<%@ taglib uri="http://jsp.veryedu.cn" prefix="z"%>	
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>	










	

		ID：

		班级名称：

		教员：

		图片：

		
	

9、界面效果

修改界面

 

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