重構(gòu)struts2 jsp分頁(yè)

1、前兩天的Struts2JSP分頁(yè)由于過(guò)于關(guān)注框架實(shí)現(xiàn)，導(dǎo)致結(jié)構(gòu)比較混亂。經(jīng)過(guò)一些改動(dòng)，再次發(fā)布。環(huán)境是JDK1.6mysql5.0jboss4.0struts2.0.11已經(jīng)實(shí)現(xiàn)上一版沒(méi)實(shí)現(xiàn)的功能。首先來(lái)看UML圖為了簡(jiǎn)潔性，其中的setterprivateinttotalPagesprivatebooleanhasNext=falseprivatebooleanhasPre=falseprivateArrayListpageConte

2、ntListprivateArrayListindexListprivatePageRetrievalprpublicStringexecute()init()returnSUCCESSprivatevoidinit()pr=newPageRetrieval(currentPage)setPageContentList(pr.getPageContentList())setndexList(pr.getIndexList())setHa

3、sNext(pr.getHasNext())setHasPre(pr.getHasPre())setTotalPages(pr.getTotalPages())othergetterssetterspublicclassPageRetrievalprivatePageInfmationpipublicPageRetrieval(intcurrentPage)pi=newPageInfmationFacty().create(curren

4、tPage)publicintgetTotalPages()returnpi.getPti().getTotalPages()othergetterssetterspublicclassPageInfmationFactyprivateDatabaseServicesdataServpublicPageInfmationFacty()dataServ=MyDatabaseServices.getInstance()publicPageI

5、nfmationcreate(intcurrentPage)PageInfmationpi=newPageInfmation()PageTotalInfopti=getNewPageTotalInfo()pi.setPti(pti)if(currentPageindexTemp=getIndexList(currentPagepti.getTotalPages())pi.setIndexList(indexTemp)returnpi本文

6、來(lái)自哈客部落Hake.ccprivatePageTotalInfogetNewPageTotalInfo()intpageSize=20inttotalRows=((MyDatabaseServices)dataServ).getRowCount()inttotalPages=(totalRowspageSize1)pageSizereturnnewPageTotalInfo(pageSizetotalPagestotalRows)pr

7、ivateArrayListgetIndexList(intcurrentPageinttotalPages)intup=0if((currentPage20)getPageContent(intcurrentPageintpageSize)ArrayListlist=newArrayList()conn=getConnection()tryps=conn.prepareStatement(“FROMjsptestLIMIT“)intt

8、emp=(currentPage1)20ps.setInt(1temp)ps.setInt(2pageSize)rs=ps.executeQuery()while(rs.next())Useruser=newUser()user.setId(rs.getString(1))user.setName(rs.getString(2))list.add(user)returnlistcatch(SQLExceptione)e.printSta

9、ckTrace()finallydgs.closeConnection(rspsconn)returnnullpublicintgetRowCount()conn=getConnection()tryps=conn.prepareStatement(“FROMjsptest“)rs=ps.executeQuery()rs.last()intresult=rs.getRow()rs.first()returnresult本文來(lái)自哈客部落H