图书管理系统服务端(二) 横纵分帧

下图是Action类

/*
 * Generated by MyEclipse Struts
 * Template path: templates/java/JavaClass.vtl
 */
package com.gao.ruan.server.actions;

import java.util.List;

import javax.annotation.Resource;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
import org.apache.struts.actions.DispatchAction;
import org.apache.struts.upload.FormFile;

import server.form.bookForm;


import com.gao.ruan.pojos.Book;
import com.gao.ruan.pojos.Category;
import com.gao.ruan.service.inter.bookServiceInter;
import com.gao.ruan.service.inter.categoryServiceInter;

/** 
       添加图书  查看图书
 */
public class BookAction extends DispatchAction   {
    @Resource 
    public bookServiceInter bookServiceImp;  //注意类型一定是接口类型
    @Resource 
    public categoryServiceInter  categoryServiceImp;   //注意类型一定是接口类型
    /*
     * Generated Methods
     */


    public ActionForward ToaddPage(ActionMapping mapping, ActionForm form,  
        HttpServletRequest request, HttpServletResponse response) {
        System.out.println("跳转到添加图书页面");
        List<Category> mm=categoryServiceImp.findAllCategory();
        request.setAttribute("fenLei", mm);     
        return mapping.findForward("toAdd");
    }

    public ActionForward add(ActionMapping mapping, ActionForm form,
            HttpServletRequest request, HttpServletResponse response) {     
        System.out.println("添加一本书");
        bookForm hjkBookForm=(bookForm) form;
        bookServiceImp.add(hjkBookForm);        
        return null;
    }


    public ActionForward findAll(ActionMapping mapping, ActionForm form,
            HttpServletRequest request, HttpServletResponse response) {
        System.out.println("查找所有图书");
        List<Book> jihe=bookServiceImp.findAllBooks();
        request.setAttribute("jihe", jihe);
        return mapping.findForward("findAll");
    }
    public ActionForward delBook(ActionMapping mapping, ActionForm form,
            HttpServletRequest request, HttpServletResponse response) {
        System.out.println("删除某个ID的图书");
        int id=Integer.parseInt(request.getParameter("id"));
        bookServiceImp.delBook(id);
        List<Book> jihe=bookServiceImp.findAllBooks();
        request.setAttribute("jihe", jihe);
        request.setAttribute("jihe", jihe);
        return mapping.findForward("findAll");
    }
}

---

---

下面是Service类，一定要注意如下：

---

下面是Service

@Transactional
public class bookServiceImp implements bookServiceInter {

    @Resource
    private SessionFactory sessionFactory;

    @Resource
    private categoryServiceInter categoryServiceImp;

    @Override
    public void add(bookForm mm) {
        Book kk=new Book();
        kk.setAuthor(mm.getAuthor()); //书的作者
        kk.setBookName(mm.getNamee());  //书的名字
        kk.setPrice(Float.parseFloat(mm.getPrice()));  //书的价格
        String oldName=mm.getPhoto().getFileName();  //保存图片状态
        String houZhui= oldName.substring(mm.getPhoto().getFileName().lastIndexOf("."));  //图片格式                              //图片
        String newNameString=makeName(houZhui);  //图片的新名字
        kk.setDescription(mm.getDescription());  //描述
        kk.setPicNameOld(oldName); //保存资源的旧名字
        kk.setPicNameNew(newNameString); //保存图片的新名字
        Category cc=categoryServiceImp.findCategoryById(mm.getCategory());
        kk.setCategory(cc);  //所属分类
        try {
            String outPutPath=getAbsolutePathByClass()+"bookImages"+"/"+newNameString; //图片保存的绝对路径
            savePic(outPutPath, mm.getPhoto());
            System.out.println(outPutPath);
        } catch (Exception e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        sessionFactory.getCurrentSession().save(kk);   //保存一本书
    }
    private String getAbsolutePathByClass() throws Exception {   //通过类路径获取工程绝对路径,也就是工程根目录在tomcat中的路径
        String webPath = this.getClass().getResource("/").getPath().replaceAll("^\\/", "");  
        webPath = webPath.replaceAll("[\\\\\\/]WEB-INF[\\\\\\/]classes[\\\\\\/]?", "/");  
        webPath = webPath.replaceAll("[\\\\\\/]+", "/");  
        webPath = webPath.replaceAll("%20", " ");  

        if (webPath.matches("^[a-zA-Z]:.*?$")) {  

        } else {  
            webPath = "/" + webPath;  
        }  

        webPath += "/";  
        webPath = webPath.replaceAll("[\\\\\\/]+", "/");  

        return webPath;  
    }  
    public String makeName(String prefixString){  //产生图片的名字
        return  UUID.randomUUID()+prefixString;
    }

    public void savePic(String outPutPathString,FormFile ff){
        InputStream is=null;
        OutputStream os=null;
        try {
            is=ff.getInputStream();
            os=new FileOutputStream(outPutPathString);
            int len=0;
            byte[] bytes=new byte[1024];
            while((len=is.read(bytes))>0){
                os.write(bytes,0,len);
            }
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }finally{
            try {
                is.close();
                os.close(); 
                ff.destroy();
            } catch (IOException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }           
        }       
    }

    @Override
    public List<Book> findAllBooks() {
        //返回所有图书
        List<Book> jihe=sessionFactory.getCurrentSession().createQuery("from Book").list();     
        return jihe;
    }
    @Override
    public void delBook(int id) {
        //删除某个id的分类
                org.hibernate.Query kk = sessionFactory.getCurrentSession()
                        .createQuery("delete from Book where id=?");
                kk.setInteger(0, id);
                kk.executeUpdate();     
    }   
}