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3.JAVAè¯è¨çåå²ï¼
4.一个好的程序员至少应该具备哪些条件?
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ç段ï¼//è·å第ä¸è¡ï¼ç¬¬ä¸åçå¼Cellc=rs.getCell(0,0);Stringstrc=c.getContents();//è·å第ä¸è¡ï¼ç¬¬äºåçå¼Cellc=rs.getCell(1,0);Stringstrc=c.getContents();//è·å第äºè¡ï¼ç¬¬äºåçå¼Cellc=rs.getCell(1,1);Stringstrc=c.getContents();System.out.println("Cell(0,0)"+"value:"+strc+";type:"+c.getType());System.out.println("Cell(1,0)"+"value:"+strc+";type:"+c.getType());System.out.println("Cell(1,1)"+"value:"+strc+";type:"+c.getType());å¦æä» ä» æ¯åå¾Cellçå¼ï¼æ们å¯ä»¥æ¹ä¾¿å°éè¿getContents()æ¹æ³ï¼å®å¯ä»¥å°ä»»ä½ç±»åçCellå¼é½ä½ä¸ºä¸ä¸ªå符串è¿åã示ä¾ä»£ç ä¸Cell(0,0)æ¯ææ¬åï¼Cell(1,0)æ¯æ°ååï¼Cell(1,1)æ¯æ¥æåï¼éè¿getContents()ï¼ä¸ç§ç±»åçè¿åå¼é½æ¯å符åãå¦ææéè¦ç¥éCellå 容çç¡®åç±»åï¼APIä¹æä¾äºä¸ç³»åçæ¹æ³ãåèä¸é¢ç代ç ç段ï¼Stringstrc=null;doublestrc=0.;Datestrc=null;Cellc=rs.getCell(0,0);Cellc=rs.getCell(1,0);Cellc=rs.getCell(1,1);if(c.getType()==CellType.LABEL){ LabelCelllabelc=(LabelCell)c;strc=labelc.getString();}if(c.getType()==CellType.NUMBER){ NmberCellnumc=(NumberCell)c;strc=numc.getValue();}if(c.getType()==CellType.DATE){ DateCelldatec=(DateCell)c;strc=datec.getDate();}System.out.println("Cell(0,0)"+"value:"+strc+";type:"+c.getType());System.out.println("Cell(1,0)"+"value:"+strc+";type:"+c.getType());System.out.println("Cell(1,1)"+"value:"+strc+";type:"+c.getType());å¨å¾å°Cell对象åï¼éè¿getType()æ¹æ³å¯ä»¥è·å¾è¯¥åå æ ¼çç±»åï¼ç¶åä¸APIæä¾çåºæ¬ç±»åç¸å¹é ï¼å¼ºå¶è½¬æ¢æç¸åºçç±»åï¼æåè°ç¨ç¸åºçåå¼æ¹æ³getXXX()ï¼å°±å¯ä»¥å¾å°ç¡®å®ç±»åçå¼ãAPIæä¾äºä»¥ä¸åºæ¬ç±»åï¼ä¸Excelçæ°æ®æ ¼å¼ç¸å¯¹åºï¼å¦ä¸å¾æ示ï¼æ¯ç§ç±»åçå ·ä½æä¹ï¼è¯·åè§JavaExcelAPIDocumentãå½ä½ å®æ对Excelçµåè¡¨æ ¼æ°æ®çå¤çåï¼ä¸å®è¦ä½¿ç¨close()æ¹æ³æ¥å ³éå åå建ç对象ï¼ä»¥éæ¾è¯»åæ°æ®è¡¨çè¿ç¨ä¸æå ç¨çå å空é´ï¼å¨è¯»å大éæ°æ®æ¶æ¾å¾å°¤ä¸ºéè¦ãåèå¦ä¸ä»£ç ç段ï¼//æä½å®ææ¶ï¼å ³é对象ï¼éæ¾å ç¨çå å空é´rwb.close();JavaExcelAPIæä¾äºè®¸å¤è®¿é®Excelæ°æ®è¡¨çæ¹æ³ï¼å¨è¿éæåªç®è¦å°ä»ç»å 个常ç¨çæ¹æ³ï¼å 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¼å¯¹è±¡æ°ç»ï¼ç¤ºä¾ï¼jxl.Workbookrwb=jxl.Workbook.getWorkbook(newFile(sourcefile));jxl.Sheetrs=rwb.getSheet(0);Cell[]cell=rs.getColumn(0);4.intgetRows()è·åSheet表ä¸æå å«çæ»è¡æ°ï¼ç¤ºä¾ï¼jxl.Workbookrwb=jxl.Workbook.getWorkbook(newFile(sourcefile));jxl.Sheetrs=rwb.getSheet(0);intrsRows=rs.getRows();5.Cell[]getRow(introw)è·åæä¸è¡çææåå æ ¼ï¼è¿åçæ¯åå æ ¼å¯¹è±¡æ°ç»ï¼ç¤ºä¾åï¼jxl.Workbookrwb=jxl.Workbook.getWorkbook(newFile(sourcefile));jxl.Sheetrs=rwb.getSheet(0);Cell[]cell=rs.getRow(0);6.CellgetCell(intcolumn,introw)è·åæå®åå æ ¼ç对象å¼ç¨ï¼éè¦æ³¨æçæ¯å®ç两个åæ°ï¼ç¬¬ä¸ä¸ªæ¯åæ°ï¼ç¬¬äºä¸ªæ¯è¡æ°ï¼è¿ä¸é常çè¡ãåç»åæäºä¸åãjxl.Workbookrwb=jxl.Workbook.getWorkbook(newFile(sourcefile));jxl.Sheetrs=rwb.getSheet(0);Cellcell=rs.getCell(0,0);çææ°çExcelå·¥ä½èä¸é¢ç代ç 主è¦æ¯å大家ä»ç»å¦ä½çæç®åçExcelå·¥ä½è¡¨ï¼å¨è¿éåå æ ¼çå 容æ¯ä¸å¸¦ä»»ä½ä¿®é¥°ç(å¦ï¼åä½ï¼é¢è²çç)ï¼ææçå 容é½ä½ä¸ºå符串åå ¥ã(å®æ´ä»£ç è§ExcelWriting.java)ä¸è¯»åExcelå·¥ä½è¡¨ç¸ä¼¼ï¼é¦å è¦ä½¿ç¨Workbookç±»çå·¥åæ¹æ³å建ä¸ä¸ªå¯åå ¥çå·¥ä½è(Workbook)对象ï¼è¿éè¦æ³¨æçæ¯ï¼åªè½éè¿APIæä¾çå·¥åæ¹æ³æ¥å建Workbookï¼èä¸è½ä½¿ç¨WritableWorkbookçæé å½æ°ï¼å 为类WritableWorkbookçæé å½æ°ä¸ºprotectedç±»åã示ä¾ä»£ç ç段å¦ä¸ï¼importjava.io.*;importjxl.*;importjxl.write.*;â¦â¦â¦â¦try{ //æ建Workbook对象,åªè¯»Workbook对象//Method1ï¼å建å¯åå ¥çExcelå·¥ä½èjxl.write.WritableWorkbookwwb=Workbook.createWorkbook(newFile(targetfile));//Method2ï¼å°WritableWorkbookç´æ¥åå ¥å°è¾åºæµ/*OutputStreamos=newFileOutputStream(targetfile);jxl.write.WritableWorkbookwwb=Workbook.createWorkbook(os);*/}catch(Exceptione){ e.printStackTrace();}APIæä¾äºä¸¤ç§æ¹å¼æ¥å¤çå¯åå ¥çè¾åºæµï¼ä¸ç§æ¯ç´æ¥çææ¬å°æ件ï¼å¦ææ件åä¸å¸¦å ¨è·¯å¾çè¯ï¼ç¼ºççæ件ä¼å®ä½å¨å½åç®å½ï¼å¦ææ件å带æå ¨è·¯å¾çè¯ï¼åçæçExcelæ件åä¼å®ä½å¨ç¸åºçç®å½ï¼å¦å¤ä¸ç§æ¯å°Excel对象ç´æ¥åå ¥å°è¾åºæµï¼ä¾å¦ï¼ç¨æ·éè¿æµè§å¨æ¥è®¿é®Webæå¡å¨ï¼å¦æHTTP头设置æ£ç¡®çè¯ï¼æµè§å¨èªå¨è°ç¨å®¢æ·ç«¯çExcelåºç¨ç¨åºï¼æ¥æ¾ç¤ºå¨æçæçExcelçµåè¡¨æ ¼ãæ¥ä¸æ¥å°±æ¯è¦å建工ä½è¡¨ï¼å建工ä½è¡¨çæ¹æ³ä¸å建工ä½èçæ¹æ³å ä¹ä¸æ ·ï¼åæ ·æ¯éè¿å·¥å模å¼æ¹æ³è·å¾ç¸åºç对象ï¼è¯¥æ¹æ³éè¦ä¸¤ä¸ªåæ°ï¼ä¸ä¸ªæ¯å·¥ä½è¡¨çå称ï¼å¦ä¸ä¸ªæ¯å·¥ä½è¡¨å¨å·¥ä½èä¸çä½ç½®ï¼åèä¸é¢ç代ç ç段ï¼//å建Excelå·¥ä½è¡¨jxl.write.WritableSheetws=wwb.createSheet("TestSheet1",0);"è¿é ä¹æ¯å¥½äºï¼ææä¹åå¤é½å ¨äºï¼å¯ä»¥å¼å§ä¸é äºï¼"ï¼ç°å¨è¦åçåªæ¯å®ä¾åAPIææä¾çExcelåºæ¬æ°æ®ç±»åï¼å¹¶å°å®ä»¬æ·»å å°å·¥ä½è¡¨ä¸å°±å¯ä»¥äºï¼åèä¸é¢ç代ç ç段ï¼//1.æ·»å Label对象jxl.write.LabellabelC=newjxl.write.Label(0,0,"ThisisaLabelcell");ws.addCell(labelC);//æ·»å 带æååFormattingç对象jxl.write.WritableFontwf=newjxl.write.WritableFont(WritableFont.TIMES,,WritableFont.BOLD,true);jxl.write.WritableCellFormatwcfF=newjxl.write.WritableCellFormat(wf);jxl.write.LabellabelCF=newjxl.write.Label(1,0,"ThisisaLabelCell",wcfF);ws.addCell(labelCF);//æ·»å 带æåä½é¢è²Formattingç对象jxl.write.WritableFontwfc=newjxl.write.WritableFont(WritableFont.ARIAL,,WritableFont.NO_BOLD,false,UnderlineStyle.NO_UNDERLINE,jxl.format.Colour.RED);jxl.write.WritableCellFormatwcfFC=newjxl.write.WritableCellFormat(wfc);jxl.write.LabellabelCFC=newjxl.write.Label(1,0,"ThisisaLabelCell",wcfFC);ws.addCell(labelCF);//2.æ·»å Number对象jxl.write.NumberlabelN=newjxl.write.Number(0,1,3.);ws.addCell(labelN);//æ·»å 带æformattingçNumber对象jxl.write.NumberFormatnf=newjxl.write.NumberFormat("#.##");jxl.write.WritableCellFormatwcfN=newjxl.write.WritableCellFormat(nf);jxl.write.NumberlabelNF=newjxl.write.Number(1,1,3.,wcfN);ws.addCell(labelNF);//3.æ·»å Boolean对象jxl.write.BooleanlabelB=newjxl.write.Boolean(0,2,false);ws.addCell(labelB);//4.æ·»å DateTime对象jxl.write.DateTimelabelDT=newjxl.write.DateTime(0,3,newjava.util.Date());ws.addCell(labelDT);//æ·»å 带æformattingçDateFormat对象jxl.write.DateFormatdf=newjxl.write.DateFormat("ddMMyyyyhh:mm:ss");jxl.write.WritableCellFormatwcfDF=newjxl.write.WritableCellFormat(df);jxl.write.DateTimelabelDTF=newjxl.write.DateTime(1,3,newjava.util.Date(),wcfDF);ws.addCell(labelDTF);è¿éæ两ç¹å¤§å®¶è¦å¼èµ·å¤§å®¶ç注æã第ä¸ç¹ï¼å¨æé åå æ ¼æ¶ï¼åå æ ¼å¨å·¥ä½è¡¨ä¸çä½ç½®å°±å·²ç»ç¡®å®äºãä¸æ¦å建åï¼åå æ ¼çä½ç½®æ¯ä¸è½å¤åæ´çï¼å°½ç®¡åå æ ¼çå 容æ¯å¯ä»¥æ¹åçã第äºç¹ï¼åå æ ¼çå®ä½æ¯æç §ä¸é¢è¿æ ·çè§å¾(column,row)ï¼èä¸ä¸æ é½æ¯ä»0å¼å§ï¼ä¾å¦ï¼A1被åå¨å¨(0,0)ï¼B1被åå¨å¨(1,0)ãæåï¼ä¸è¦å¿è®°å ³éæå¼çExcelå·¥ä½è对象ï¼ä»¥éæ¾å ç¨çå åï¼åè§ä¸é¢ç代ç ç段ï¼//åå ¥Exelå·¥ä½è¡¨wwb.write();//å ³éExcelå·¥ä½è对象wwb.close();è¿å¯è½ä¸è¯»åExcelæ件çæä½æå°å°ä¸åï¼å¨å ³éExcel对象ä¹åï¼ä½ å¿ é¡»è¦å è°ç¨write()æ¹æ³ï¼å 为å åçæä½é½æ¯åå¨å¨ç¼åä¸çï¼æ以è¦éè¿è¯¥æ¹æ³å°æä½çå 容ä¿åå¨æ件ä¸ãå¦æä½ å å ³éäºExcel对象ï¼é£ä¹åªè½å¾å°ä¸å¼ 空çå·¥ä½èäºãæ·è´ãæ´æ°Excelå·¥ä½èæ¥ä¸æ¥ç®è¦ä»ç»ä¸ä¸å¦ä½æ´æ°ä¸ä¸ªå·²ç»åå¨çå·¥ä½èï¼ä¸»è¦æ¯ä¸é¢äºæ¥æä½ï¼ç¬¬ä¸æ¥æ¯æé 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