Maven 建 Struts2 基本实现 CURD Controller-白红宇

Maven 建 Struts2 基本实现 CURD Controller

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发布时间：2019-06-22

本文共 8679 字，大约阅读时间需要 28 分钟。

开发环境

开发工具：Eclipse

数据库：MySQL

server：Tomcat

Struts2 请求原理流程图

struts2 架构图

构建一个 web maven project，在pom.xml引入struts2的jar包


              
                  
       
        org.apache.struts
                   
       
        struts2-core
                   
       
        2.3.1.2

在 web.xml 文件里引入struts2的过滤器


              
       
        struts2
               
       
                    org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter        
           
          
              
       
        struts2
               
       
        /*

測试流程

创建一个TestAction类

package com.gx.action;public class TestAction {    public String helloworld(){        return "hello";    }}

2.在resources下创建struts.xml和test.xml文件

test.xml

xml version="1.0" encoding="UTF-8"?

>

 <!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.0//EN" "http://struts.apache.org/dtds/struts-2.0.dtd"> <struts> <package name="userPkg" namespace="/testspace" extends="struts-default"> <!-- http://localhost:8080/manningSampleApp/packageNamespace/actionName_method --> <action name="testAction_*" class="com.gx.action.TestAction" method="{1}"> <result name="hello">/WEB-INF/test.jsp</result> </action> <!-- <action ... --> </package> </struts>

在struts.xml文件里引入user.xml

>

 <!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.0//EN" "http://struts.apache.org/dtds/struts-2.0.dtd"> <struts> <include file="test.xml"></include> </struts>

3.浏览器输入：

4. 结果：

写控制层代码

BaseAction

package com.gx.base;import java.lang.reflect.ParameterizedType;import java.util.HashMap;import java.util.Map;import com.opensymphony.xwork2.ActionSupport;import com.opensymphony.xwork2.ModelDriven;/** *  * BaseAction类 *          继承ActionSupport和实现了ModelDriven接口 * @author always * * @param 
      
        */public abstract class BaseAction
       
         extends ActionSupport implements ModelDriven
        
         {
          protected T model=null;    protected Class
         
           modelClass;    /*存放json数据,用来实现ajax*/    protected Map
          
            jsonMap=new HashMap
           
            (); public BaseAction(){ ParameterizedType pt = (ParameterizedType) this.getClass().getGenericSuperclass(); modelClass=(Class) pt.getActualTypeArguments()[0]; } public T getModel() { if(model==null){ try { model=modelClass.newInstance(); } catch (final Exception e) { LOG.error(e.getMessage()); } } return model; } public Map
            
              getDataMap() { return jsonMap; } public void setJsonMap(Map
             
               jsonMap{ this.jsonMap = jsonMap; }}

SimpleMethodAction

package com.gx.base;/** * 基本curd方法的空实现,方便统一管理 *  * @author always * * @param 
      
        */public abstract class SimpleMethodAction
       
         extends BaseAction
        
         {
          /**     * 列表     * @return     *      list.jsp     */    public String list(){        return "list";    }    /**     * 删除     * @return     *      toList-->actionName_list-->list.jsp(user.xml中配置)     */    public String delete(){        return "toList";    }    /**     * 改动     * @return     *      toList-->actionName_list-->list.jsp     */    public String edit(){        return "toList";    }    /**     * 改动页面     * @return     *      saveUI.jsp     */    public String editUI(){        return "saveUI";    }    /**     * 加入     * @return     *      toList-->actionName_list-->list.jsp     *      */    public String add(){        return "toList";        }    /**     * 加入页面     * @return     *      saveUI.jsp     */    public String addUI(){        return "saveUI";    }}

user.xml


      
          
               
                
                
                
                     
                         
          jsonMap            
                     
         
          /WEB-INF/jsp/user/list.jsp            
                     
         
          /WEB-INF/jsp/user/saveUI.jsp            
                     
         
          userAction_list

UserAction

package com.gx.web.struts2;import org.apache.log4j.Logger;import com.gx.base.SimpleMethodAction;import com.gx.domain.PageBean;import com.gx.domain.User;import com.gx.service.UserService;import com.gx.service.impl.UserServiceImpl;import com.opensymphony.xwork2.ActionContext;/** * 继承SimpleMethodAction * @author always * */public class UserAction extends SimpleMethodAction
      
        {    /**     *      */    private static final long serialVersionUID = -8771772792039694213L;    static Logger log = Logger.getLogger(UserAction.class);    private UserService userService = new UserServiceImpl();    /*删除，改动 用户时传来的id*/    private int userId;    /*分页*/    private int pageNum = 1;    @Override    public String list() {        ActionContext ac = ActionContext.getContext();        PageBean pageBean = userService.getPageBean(pageNum, 5);        ac.getValueStack().push(pageBean);        return super.list();    }    public String listJson() {        jsonMap.clear();        ActionContext ac = ActionContext.getContext();        PageBean pageBean = userService.getPageBean(pageNum, 5);        jsonMap.put("pageBean", pageBean);        jsonMap.put("success", true);        return SUCCESS;    }    @Override    public String delete() {        userService.delete(userId);        return super.delete();    }    @Override    public String edit() {        User model = this.getModel();        userService.update(model);        return super.edit();    }    @Override    public String editUI() {        log.info(userId);        User user = userService.getById(userId);        log.info(user.toString());        ActionContext.getContext().getValueStack().push(user);        return super.editUI();    }    @Override    public String add() {        User model = this.getModel();        log.info(model.toString());        userService.save(model);        return super.add();    }    @Override    public String addUI() {        return super.addUI();    }    @Override    public void validate() {        log.info("開始校验");        super.validate();    }    public int getUserId() {        return userId;    }    public void setUserId(int userId) {        this.userId = userId;    }    public int getPageNum() {        return pageNum;    }    public void setPageNum(int pageNum) {        this.pageNum = pageNum;    }}

jsp 代码

list.jsp

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>username列表<%@ include file="/WEB-INF/jsp/public/common.jspf" %>
          
          
           
               
                            
        
        
                                                                                                   username                                密码                                邮箱                                联系方式                                相关操作                           
                     
                                                                                                       ${username}                                    ${password}                                    ${email}                                    ${telphone}                                     
            
             删除

username	密码	邮箱	联系方式	相关操作
${username}	${password}	${email}	${telphone}	删除

userId=%{id}"

>改动</s:a> </td> </tr> </s:iterator> <%@ include file="/WEB-INF/jsp/public/pageView.jspf" %> </tbody> </table> </s:form> <!-- 其它功能超链接 --> <div> <div> <s:a action="userAction_addUI">加入</s:a> </div> </div> </div> </body> </html>

saveUI.jsp

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>username列表<%@ include file="/WEB-INF/jsp/public/common.jspf" %>
          
          
           
               
                            
        
        
                                <%@ include file="/WEB-INF/jsp/public/pageView.jspf" %>            
                                                                                                   username                                密码                                邮箱                                联系方式                                相关操作                           
                     
                                                                                                       ${username}                                    ${password}                                    ${email}                                    ${telphone}                                     
            
             删除
             
            
             改动
                                           
         
                
        
               
               
                   
                        
         
          加入