功能基本实现完成,可以编译执行,来查看效果.
程序基本实现了 显示代码与业务逻辑相分离,并模拟了一个数据库的实现机制.
package cn.iamsese.product.custom.company; import java.text.MessageFormat; import java.util.ArrayList; import java.util.Date; import java.util.Enumeration; import java.util.Hashtable; /** * 商家信息记录系统 * cn.iamsese.product.custom.company * Author: vb2005xu [JAVA菜鸟] */ public class Main { public Main(){ this.init(); } private SellerOPInterface sellerOP ; private void init(){ this.sellerOP = new SellerOP(); this.initSellersData(this.sellerOP) ; } private void initTellLineRecordData(Seller seller){ TellLineRecordOPInterface tellLineRecordOP = this.sellerOP.getTellLineRecordOP(seller); tellLineRecordOP.addTellLineRecord( new TellLineRecord( 1 , MessageFormat.format("{0,date,full}",new Date()) , "抬高K钱1" ,"" + "虚太高价,故意坑人" ) ) ; tellLineRecordOP.addTellLineRecord( new TellLineRecord( 2 , MessageFormat.format("{0,date,full}",new Date()) , "抬高K钱2" ,"" + "虚太高价,故意坑人" ) ) ; tellLineRecordOP.addTellLineRecord( new TellLineRecord( 3 , MessageFormat.format("{0,date,full}",new Date()) , "抬高K钱3" ,"" + "虚太高价,故意坑人" ) ) ; tellLineRecordOP.addTellLineRecord( new TellLineRecord( 4 , MessageFormat.format("{0,date,full}",new Date()) , "抬高K钱4" ,"" + "虚太高价,故意坑人" ) ) ; //System.out.println(tellLineRecordOP.findAllTellLineRecords()); } private void initSellersData(SellerOPInterface sellerOP){ sellerOP.addSeller(new Seller(0,"商家1","鼎好111") ) ; Seller seller1 = new Seller(1,"商家2","鼎好112") ; sellerOP.addSeller(seller1) ; this.initTellLineRecordData(seller1); sellerOP.addSeller(new Seller(2,"商家3","鼎好103") ) ; } private void printSellersInfo(Enumeration<Seller> sellers){ //列出所有商家信息 String formatMSG = "| ID: {0} | Name: {1} | Adderss: {2} | Level: {3} |" ; while (sellers.hasMoreElements()){ Seller seller = sellers.nextElement(); System.out.println("----------Start-------------------------------------------------------------------------"); System.out.println(MessageFormat.format(formatMSG, seller.getId(),seller.getName(),seller.getAddress(),this.sellerOP.getSellerLevel(seller) )); this.printTellRecords(seller); System.out.println("----------Stop-----------------------------------------------------------------"); } } private void printTellRecords(Seller seller){ int recordCount = this.sellerOP.getTellLineRecordOP(seller).getRecordsCount() ; System.out.println("记录: " + recordCount); int i = 0 ; String formatMSG = " ID: {0} Date: {1} Title: {2} \n 描述 {3} " ; for(TellLineRecord record : this.sellerOP.getTellLineRecordOP(seller).findAllTellLineRecords()) { System.out.println( (i++) + "-----"); System.out.println(MessageFormat.format(formatMSG,record.getId(),record.getDate(),record.getTitle(),record.getDescription())); } } private void buildWebUI(){ this.printSellersInfo(this.sellerOP.findAllSeller()); } public static void main(String[] args) { Main console = new Main(); console.buildWebUI(); } } /** * 商家所在的大楼 * cn.iamsese.product.custom.zgcpzcompany * Author: vb2005xu [JAVA菜鸟] */ class Building { public final static int HAI_LONG = 0 ; //海龙 public final static int DING_HAO = 0 ; //鼎好 public final static int E_WORLD = 0 ; //E世界 } /** * 商家 * cn.iamsese.product.custom.zgcpzcompany * Author: vb2005xu [JAVA菜鸟] */ class Seller { private int id ; //公司ID private String name ;//公司名称 private String address ;//办公地点 public Seller(int id,String name,String address) { this.id = id ; this.name = name ; this.address = address ; } //public ArrayList<TellLineRecord> records ; public int getId() { return id; } public void setId(int id) { this.id = id; } public String getName() { return name; } public void setName(String name) { this.name = name; } public String getAddress() { return address; } public void setAddress(String address) { this.address = address; } } /** * 记录 * cn.iamsese.product.custom.zgcpzcompany * Author: vb2005xu [JAVA菜鸟] */ class TellLineRecord { private int id ; //ID private String date ; //时间 private String title ; //标题 private String description ; //描述 public TellLineRecord(int id,String date,String title,String description){ this.id = id ; this.date = date ; this.title = title ; this.description = description ; } public int getId() { return id; } public void setId(int id) { this.id = id; } public String getDate() { return date; } public void setDate(String date) { this.date = date; } public String getTitle() { return title; } public void setTitle(String title) { this.title = title; } public String getDescription() { return description; } public void setDescription(String description) { this.description = description; } } //逻辑层 /** * 商家 操作接口 */ interface SellerOPInterface { public Enumeration<Seller> findAllSeller(); public boolean addSeller(Seller seller) ; public Seller findSellerByName(String name); public boolean removeSellerByName(String name) ; public void removeAllSeller(); public int getSellerLevel(Seller seller) ; // 获取商家的级别 public TellLineRecordOPInterface getTellLineRecordOP(Seller seller); } /** * 记录集 操作接口 * cn.iamsese.product.custom.zgcpzcompany * Author: vb2005xu [JAVA菜鸟] */ interface TellLineRecordOPInterface { public int getRecordsCount() ; public ArrayList<TellLineRecord> findAllTellLineRecords(); public boolean addTellLineRecord(TellLineRecord tellLineRecord) ; public TellLineRecord findTellLineRecordByID(int id); public boolean removeTellLineRecordByID(int id); public void removeAllTellLineRecord(); } class SellerOP implements SellerOPInterface { public SellerOP(){} public Enumeration<Seller> findAllSeller() { return DBStore.getDBStoreInstance().getSellerRecordStore().elements(); } public Seller findSellerByName(String name) { return DBStore.getDBStoreInstance().getSellerRecordStore().get(name); } public void removeAllSeller() { DBStore.getDBStoreInstance().getSellerRecordStore().clear(); } public boolean removeSellerByName(String name) { boolean state = false ; try { DBStore.getDBStoreInstance().getSellerRecordStore().remove(name) ; state = true ; } catch (NullPointerException e) { } return state; } public boolean addSeller(Seller seller) { boolean state = false ; try { DBStore.getDBStoreInstance().getSellerRecordStore().put(seller.getName(),seller) ; //为seller的记录对象初始化操作 DBStore.getDBStoreInstance().getTellLineRecordStore().put(seller.getName() , new ArrayList<TellLineRecord>() ) ; state = true ; } catch (NullPointerException e) { } return state; } public TellLineRecordOPInterface getTellLineRecordOP(Seller seller) { return new TellLineRecordOP(seller); } public int getSellerLevel(Seller seller) { //每两次加一个级别 //System.out.println(this.getTellLineRecordOP(seller)); return this.getTellLineRecordOP(seller).getRecordsCount() / 2 + 1; } } class TellLineRecordOP implements TellLineRecordOPInterface { private Seller seller ; public TellLineRecordOP(Seller seller) { this.seller = seller; } public ArrayList<TellLineRecord> findAllTellLineRecords() { return DBStore.getDBStoreInstance().getTellLineRecordStore().get(this.seller.getName()); } public TellLineRecord findTellLineRecordByID(int id) { return DBStore.getDBStoreInstance().getTellLineRecordStore().get(this.seller.getName()).get(id); } public void removeAllTellLineRecord() { DBStore.getDBStoreInstance().getTellLineRecordStore().get(this.seller.getName()).clear(); } public boolean removeTellLineRecordByID(int id) { boolean state = false ; try { DBStore.getDBStoreInstance().getTellLineRecordStore().get(this.seller.getName()).remove(id) ; state = true ; } catch (NullPointerException e) { } return state; } public boolean addTellLineRecord(TellLineRecord tellLineRecord) { boolean state = false ; try { //首先取得TellLineRecordStore,并判断其中是否存在this.seller.getName() if (DBStore.getDBStoreInstance().getTellLineRecordStore().containsKey(this.seller.getName())){ DBStore.getDBStoreInstance().getTellLineRecordStore().get(this.seller.getName()).add(tellLineRecord) ; state = true ; } // else { // -- 这个在调用addSeller时已经初始化了 // DBStore.getDBStoreInstance().getTellLineRecordStore().put(this.seller.getName() , new ArrayList<TellLineRecord>() ) ; // } // state = true ; } catch (NullPointerException e) { //e.printStackTrace(); } return state; } public int getRecordsCount() { try { return this.findAllTellLineRecords().size(); }catch (NullPointerException e) { //如果this.findAllTellLineRecords()返回null的话 return 0 ; } } } //实体层,这里没有使用到数据库,所以缺少了Dao层的实现 /** * 模拟的记录存储器存储器 * cn.iamsese.product.custom.zgcpzcompany * Author: vb2005xu [JAVA菜鸟] */ class DBStore { private static DBStore instance = null ; /** * < sellerName,ArrayList<TellLineRecord> > */ private Hashtable<String, ArrayList<TellLineRecord>> tellLineRecordStore ; /** * <sellerName,Seller> */ private Hashtable<String, Seller> sellerRecordStore ; /* * 仅能使用单态实例对象 */ private DBStore(){ this.setSellerRecordStore(new Hashtable<String, Seller> ()); this.setTellLineRecordStore(new Hashtable<String, ArrayList<TellLineRecord>>()) ; } public static DBStore getDBStoreInstance(){ if (instance == null) instance = new DBStore(); return instance ; } public Hashtable<String, ArrayList<TellLineRecord>> getTellLineRecordStore() { return tellLineRecordStore; } public void setTellLineRecordStore( Hashtable<String, ArrayList<TellLineRecord>> tellLineRecordStore) { this.tellLineRecordStore = tellLineRecordStore; } public Hashtable<String, Seller> getSellerRecordStore() { return sellerRecordStore; } public void setSellerRecordStore(Hashtable<String, Seller> sellerRecordStore) { this.sellerRecordStore = sellerRecordStore; } }
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