categorybean.java

用JSF.Spring和Hibernate开发的一个办公用品管理系统的WEB应用。

package com.jsfabc.jsh.view.bean;

import com.jsfabc.jsh.model.bo.Article;
import com.jsfabc.jsh.model.bo.BuyBill;
import com.jsfabc.jsh.model.bo.Category;
import com.jsfabc.jsh.model.service.ArticleService;
import javax.faces.context.FacesContext;
import javax.faces.event.ValueChangeEvent;
import javax.faces.application.FacesMessage;
import com.jsfabc.jsh.model.exception.DbException;
import com.jsfabc.jsh.utils.MessageFactory;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import javax.faces.model.SelectItem;

public class CategoryBean {
	//保存用户的一些基本信息供后面使用
	
	private Integer categoryId;	
    //所有类别
	private List categorys;
	
    //用品类别列表用于填充下拉列表
    private List categoryList;
    //用品列表
    private List articleList;    
    //用于保存一个会话范围的类别
    private Category category;    
    //一个类别的所有用品
    private List articles;    
    //被选择的用品列表
    private List selectedArticles;
    //被选择的用品标识
    private Integer [] articleIds;
	//采购清单
	private BuyBill buyBill;
	//采购清单列表
	private List buyBills;

    //用品服务
    private ArticleService articleService;
    
    //构造函数
    public CategoryBean() {
    	
    }
    
    public Integer getCategoryId() {
        return this.categoryId;
    }
    
    public void setCategoryId(Integer categoryId) {
        this.categoryId = categoryId;
    }


    public Category getCategory() {
        return this.category;
    }
    
    public void setCategory(Category category) {
        this.category = category;
    }   
   
    //类别的取得与设置
    public List getCategorys(){
    	return categorys;
    }
    
    public void setCategorys(List newValue){
    	this.categorys=newValue;
    }    
    
    public List getCategoryList(){
    	return categoryList;
    }
    
    public void setCategoryList(List newValue){
    	this.categoryList=newValue;
    }

    public List getArticleList(){
    	return articleList;
    }
    
    public void setArticleList(List newValue){
    	this.articleList=newValue;
    }

    public List getArticles(){
    	return articles;
    }
    
    public void setArticles(List newValue){
    	this.articles=newValue;
    }    

    public List getSelectedArticles(){
    	return selectedArticles;
    }
    
    public void setSelectedArticles(List newValue){
    	this.selectedArticles=newValue;
    }    
    
    public Integer [] getArticleIds(){
    	return this.articleIds;
    }
    
    public void setArticleIds(Integer [] newValue){
    	this.articleIds=newValue;
    }
    
	public BuyBill getBuyBill(){
		return buyBill;
	}
	
	public void setBuyBill(BuyBill newValue){
		this.buyBill=newValue;
	}

	public List getBuyBills(){
		return buyBills;
	}
	
	public void setBuyBills(List newValue){
		this.buyBills=newValue;
	}



   

    //创建日志对象
    Log log=LogFactory.getLog(this.getClass());
    
    //依赖注入
    public void setArticleService(ArticleService newValue){
    	this.articleService=newValue;
    }    
    
    public String categoryListAction(){ 
    	FacesContext facesContext= FacesContext.getCurrentInstance();
	
        //添加类别列表,以便填充下拉列表。
        //该列表也可用在应用程序初始化时保存在一个应用程序范围内的bean的方法实现，
        //不过这样就会在更新类别项目后，要重启应用程序的服务器，让其重新初始化
        //才能读到更新后的值，这里不采用这种方式
       
        this.categoryList=new ArrayList();
        try {
			this.categorys=articleService.findAllCategorys();
			
			for (int i=0; i<categorys.size(); i++) {
	    		
	    		category=(Category)categorys.get(i);
	    		this.categoryList.add(new SelectItem(category.getCategoryId().toString(),category.getCategoryName()));
	    	            		
	    	}
			
			return "success";
        }
        catch(DbException de){
            //捕获DbException异常
            FacesMessage msg=MessageFactory.getMessage
                       (facesContext,"error_database_error","");
            msg.setSeverity(FacesMessage.SEVERITY_WARN);
            facesContext.addMessage(null,msg);
            
            return "failure";
        }
    	catch(Exception e){
            //捕获其他异常
            FacesMessage msg=MessageFactory.getMessage
                       (facesContext,"error_unexpected","");            
            msg.setSeverity(FacesMessage.SEVERITY_ERROR);
            facesContext.addMessage(null,msg);
            
            return "failure";
           
        }    	
    }	

    public void categoryChanged(ValueChangeEvent event) {
        //取得faces上下文
    	FacesContext facesContext= FacesContext.getCurrentInstance();
    	try{
    		
    		//获得选取的类别
        	Category selectedCategory=new Category();
        	Integer categoryId=(Integer)event.getNewValue();        	
        	selectedCategory.setCategoryId(categoryId);
        	
        	this.category=selectedCategory;
        	
        	this.articles=articleService.findCategoryArticles(selectedCategory);
        	
    		this.articleList=new ArrayList();
    		for (int i=0; i<articles.size(); i++) {
        		Article article=(Article)articles.get(i);
        		this.articleList.add(new SelectItem(article.getArticleId(),article.getArticleName()));
        		        		
        	}
        }
        catch(DbException de){
            //捕获DbException异常
            FacesMessage msg=MessageFactory.getMessage
                       (facesContext,"error_database_error","");
            msg.setSeverity(FacesMessage.SEVERITY_WARN);
            facesContext.addMessage(null,msg);
        }
    	catch(Exception e){
            //捕获其他异常
            FacesMessage msg=MessageFactory.getMessage
                       (facesContext,"error_unexpected","");            
            msg.setSeverity(FacesMessage.SEVERITY_ERROR);
            facesContext.addMessage(null,msg);
        }    	
    }

    //取得被选择的用品
	public List getSelectedArticles(Integer [] ids) {
		if (ids.length>0 && this.articles != null) {
			Iterator ite = this.articles.iterator();
			List selectedArticles=new ArrayList();
			
			while(ite.hasNext()) {
				Article article = (Article)ite.next();
				for(int i=0;i<ids.length;i++){
					if (ids[i].equals(article.getArticleId())) {
						
						selectedArticles.add(article);
					}
				}			
			}
			return selectedArticles;
		}		
		return null;
	} 
   
    public String showArticlesAction(){
    	this.selectedArticles=getSelectedArticles(articleIds);    	
    	return "next";    	
    }
    
    public String showRequisitionAction(){
        //取得faces上下文
    	FacesContext facesContext= FacesContext.getCurrentInstance();
    	
    	for(int i=0;i<selectedArticles.size();i++){
    		
    	   	//作为申请的附件,购买清单
    	    Article article=(Article)selectedArticles.get(i);
    	   
    	    Double subTotalPrice=article.getCurrentPrice()*article.getRequisitionNumber();
    	    article.setSubTotalPrice(subTotalPrice);
 
    	}
        return "next";
    }
   

    

    


}