本文實例講述了Java實現批量導入excel表格數據到數據庫中的方法。分享給大家供大家參考，具體如下：
1、創建導入抽象類
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package com.gcloud.common.excel;import java.io.FileInputStream;import java.io.FileNotFoundException;import java.io.IOException;import java.io.PrintStream;import java.sql.SQLException;import java.util.ArrayList;import java.util.List;import org.apache.poi.hssf.eventusermodel.EventWorkbookBuilder.SheetRecordCollectingListener;import org.apache.poi.hssf.eventusermodel.FormatTrackingHSSFListener;import org.apache.poi.hssf.eventusermodel.HSSFEventFactory;import org.apache.poi.hssf.eventusermodel.HSSFListener;import org.apache.poi.hssf.eventusermodel.HSSFRequest;import org.apache.poi.hssf.eventusermodel.MissingRecordAwareHSSFListener;import org.apache.poi.hssf.eventusermodel.dummyrecord.LastCellOfRowDummyRecord;import org.apache.poi.hssf.eventusermodel.dummyrecord.MissingCellDummyRecord;import org.apache.poi.hssf.model.HSSFFormulaParser;import org.apache.poi.hssf.record.BOFRecord;import org.apache.poi.hssf.record.BlankRecord;import org.apache.poi.hssf.record.BoolErrRecord;import org.apache.poi.hssf.record.BoundSheetRecord;import org.apache.poi.hssf.record.FormulaRecord;import org.apache.poi.hssf.record.LabelRecord;import org.apache.poi.hssf.record.LabelSSTRecord;import org.apache.poi.hssf.record.NoteRecord;import org.apache.poi.hssf.record.NumberRecord;import org.apache.poi.hssf.record.RKRecord;import org.apache.poi.hssf.record.Record;import org.apache.poi.hssf.record.SSTRecord;import org.apache.poi.hssf.record.StringRecord;import org.apache.poi.hssf.usermodel.HSSFWorkbook;import org.apache.poi.poifs.filesystem.POIFSFileSystem;/** * 導入抽象類 * Created by charlin on 2017/9/7. */public abstract class HxlsAbstract implements HSSFListener { private int minColumns; private POIFSFileSystem fs; private PrintStream output; private int lastRowNumber; private int lastColumnNumber; /** Should we output the formula, or the value it has? */ private boolean outputFormulaValues = true; /** For parsing Formulas */ private SheetRecordCollectingListener workbookBuildingListener; private HSSFWorkbook stubWorkbook; // Records we pick up as we process private SSTRecord sstRecord; private FormatTrackingHSSFListener formatListener; /** So we known which sheet we're on */ private int sheetIndex = -1; private BoundSheetRecord[] orderedBSRs; @SuppressWarnings("unchecked") private ArrayList boundSheetRecords = new ArrayList(); // For handling formulas with string results private int nextRow; private int nextColumn; private boolean outputNextStringRecord; private int curRow; private List<String> rowlist; @SuppressWarnings( "unused") private String sheetName; public HxlsAbstract(POIFSFileSystem fs) throws SQLException { this.fs = fs; this.output = System.out; this.minColumns = -1; this.curRow = 0; this.rowlist = new ArrayList<String>(); } public HxlsAbstract(String filename) throws IOException, FileNotFoundException, SQLException { this(new POIFSFileSystem(new FileInputStream(filename))); } //excel記錄行操作方法，以行索引和行元素列表為參數，對一行元素進行操作，元素為String類型// public abstract void optRows(int curRow, List<String> rowlist) throws SQLException ; //excel記錄行操作方法，以sheet索引，行索引和行元素列表為參數，對sheet的一行元素進行操作，元素為String類型 public abstract void optRows(int sheetIndex,int curRow, List<String> rowlist) throws Exception; /** * 遍歷 excel 文件 */ public void process() throws IOException { MissingRecordAwareHSSFListener listener = new MissingRecordAwareHSSFListener( this); formatListener = new FormatTrackingHSSFListener(listener); HSSFEventFactory factory = new HSSFEventFactory(); HSSFRequest request = new HSSFRequest(); if (outputFormulaValues) { request.addListenerForAllRecords(formatListener); } else { workbookBuildingListener = new SheetRecordCollectingListener( formatListener); request.addListenerForAllRecords(workbookBuildingListener); } factory.processWorkbookEvents(request, fs); } /** * HSSFListener 監聽方法，處理 Record */ @SuppressWarnings("unchecked") public void processRecord(Record record) { int thisRow = -1; int thisColumn = -1; String thisStr = null; String value = null; switch (record.getSid()) { case BoundSheetRecord.sid: boundSheetRecords.add(record); break; case BOFRecord.sid: BOFRecord br = (BOFRecord) record; //進入sheet if (br.getType() == BOFRecord.TYPE_WORKSHEET) { // Create sub workbook if required if (workbookBuildingListener != null && stubWorkbook == null) { stubWorkbook = workbookBuildingListener .getStubHSSFWorkbook(); } // Works by ordering the BSRs by the location of // their BOFRecords, and then knowing that we // process BOFRecords in byte offset order sheetIndex++; if (orderedBSRs == null) { orderedBSRs = BoundSheetRecord .orderByBofPosition(boundSheetRecords); } sheetName = orderedBSRs[sheetIndex].getSheetname(); } break; case SSTRecord.sid: sstRecord = (SSTRecord) record; break; case BlankRecord.sid: BlankRecord brec = (BlankRecord) record; thisRow = brec.getRow(); thisColumn = brec.getColumn(); thisStr = ""; break; case BoolErrRecord.sid: BoolErrRecord berec = (BoolErrRecord) record; thisRow = berec.getRow(); thisColumn = berec.getColumn(); thisStr = ""; break; case FormulaRecord.sid: FormulaRecord frec = (FormulaRecord) record; thisRow = frec.getRow(); thisColumn = frec.getColumn(); if (outputFormulaValues) { if (Double.isNaN(frec.getValue())) { // Formula result is a string // This is stored in the next record outputNextStringRecord = true; nextRow = frec.getRow(); nextColumn = frec.getColumn(); } else { thisStr = formatListener.formatNumberDateCell(frec); } } else { thisStr = '"' + HSSFFormulaParser.toFormulaString(stubWorkbook, frec.getParsedExpression()) + '"'; } break; case StringRecord.sid: if (outputNextStringRecord) { // String for formula StringRecord srec = (StringRecord) record; thisStr = srec.getString(); thisRow = nextRow; thisColumn = nextColumn; outputNextStringRecord = false; } break; case LabelRecord.sid: LabelRecord lrec = (LabelRecord) record; curRow = thisRow = lrec.getRow(); thisColumn = lrec.getColumn(); value = lrec.getValue().trim(); value = value.equals("")?" ":value; this.rowlist.add(thisColumn, value); break; case LabelSSTRecord.sid: LabelSSTRecord lsrec = (LabelSSTRecord) record; curRow = thisRow = lsrec.getRow(); thisColumn = lsrec.getColumn(); if (sstRecord == null) { rowlist.add(thisColumn, " "); } else { value = sstRecord .getString(lsrec.getSSTIndex()).toString().trim(); value = value.equals("")?" ":value; rowlist.add(thisColumn,value); } break; case NoteRecord.sid: NoteRecord nrec = (NoteRecord) record; thisRow = nrec.getRow(); thisColumn = nrec.getColumn(); // TODO: Find object to match nrec.getShapeId() thisStr = '"' + "(TODO)" + '"'; break; case NumberRecord.sid: NumberRecord numrec = (NumberRecord) record; curRow = thisRow = numrec.getRow(); thisColumn = numrec.getColumn(); value = formatListener.formatNumberDateCell(numrec).trim(); value = value.equals("")?" ":value; // Format rowlist.add(thisColumn, value); break; case RKRecord.sid: RKRecord rkrec = (RKRecord) record; thisRow = rkrec.getRow(); thisColumn = rkrec.getColumn(); thisStr = '"' + "(TODO)" + '"'; break; default: break; } // 遇到新行的操作 if (thisRow != -1 && thisRow != lastRowNumber) { lastColumnNumber = -1; } // 空值的操作 if (record instanceof MissingCellDummyRecord) { MissingCellDummyRecord mc = (MissingCellDummyRecord) record; curRow = thisRow = mc.getRow(); thisColumn = mc.getColumn(); rowlist.add(thisColumn," "); } // 如果遇到能打印的東西，在這里打印 if (thisStr != null) { if (thisColumn > 0) { output.print(','); } output.print(thisStr); } // 更新行和列的值 if (thisRow > -1) lastRowNumber = thisRow; if (thisColumn > -1) lastColumnNumber = thisColumn; // 行結束時的操作 if (record instanceof LastCellOfRowDummyRecord) { if (minColumns > 0) { // 列值重新置空 if (lastColumnNumber == -1) { lastColumnNumber = 0; } } // 行結束時， 調用 optRows() 方法 lastColumnNumber = -1; try { optRows(sheetIndex,curRow, rowlist); } catch (Exception e) { e.printStackTrace(); } rowlist.clear(); } }} |
2、創建導入接口
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package com.gcloud.common.excel;import java.util.List;public interface HxlsOptRowsInterface { public static final String SUCCESS="success"; /** * 處理excel文件每行數據方法 * @param sheetIndex * @param curRow * @param rowlist * @return success：成功，否則為失敗原因 * @throws Exception */ public String optRows(int sheetIndex, int curRow, List<String> rowlist) throws Exception;} |
3、創建實現類， 在這個方法實現把導入的數據添加到數據庫中
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package com.gcloud.common.excel;import java.util.List;public class HxlsInterfaceImpl implements HxlsOptRowsInterface { @Override public String optRows(int sheetIndex, int curRow, List<String> datalist) throws Exception { //在這里執行數據的插入 //System.out.println(rowlist); //saveData(datalist); return ""; }} |
4、導入工具實現
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package com.gcloud.common.excel;import java.io.FileNotFoundException;import java.io.IOException;import java.sql.SQLException;import java.util.ArrayList;import java.util.List;/** * excel導入工具 * Created by charlin on 2017/9/7. */public class ExcelImportUtil extends HxlsAbstract{ //數據處理bean private HxlsOptRowsInterface hxlsOptRowsInterface; //處理數據總數 private int optRows_sum = 0; //處理數據成功數量 private int optRows_success = 0; //處理數據失敗數量 private int optRows_failure = 0; //excel表格每列標題 private List<String> rowtitle ; //失敗數據 private List<List<String>> failrows; //失敗原因 private List<String> failmsgs ; //要處理數據所在的sheet索引,從0開始 private int sheetIndex; public ExcelImportUtil(String filename, int sheetIndex, HxlsOptRowsInterface hxlsOptRowsInterface) throws IOException, FileNotFoundException, SQLException { super(filename); this.sheetIndex = sheetIndex; this.hxlsOptRowsInterface = hxlsOptRowsInterface; this.rowtitle = new ArrayList<String>(); this.failrows = new ArrayList<List<String>>(); this.failmsgs = new ArrayList<String>(); } @Override public void optRows(int sheetIndex,int curRow, List<String> rowlist) throws Exception { /*for (int i = 0 ;i< rowlist.size();i++){ System.out.print("'"+rowlist.get(i)+"',"); } System.out.println();*/ //將rowlist的長度補齊和標題一致 int k=rowtitle.size()-rowlist.size(); for(int i=0;i<k;i++){ rowlist.add(null); } if(sheetIndex == this.sheetIndex){ optRows_sum++; if(curRow == 0){//記錄標題 rowtitle.addAll(rowlist); }else{ String result = hxlsOptRowsInterface.optRows(sheetIndex, curRow, rowlist); if(!result.equals(hxlsOptRowsInterface.SUCCESS)){ optRows_failure++; //失敗數據 failrows.add(new ArrayList<String>(rowlist)); failmsgs.add(result); }else{ optRows_success++; } } } } public long getOptRows_sum() { return optRows_sum; } public void setOptRows_sum(int optRows_sum) { this.optRows_sum = optRows_sum; } public long getOptRows_success() { return optRows_success; } public void setOptRows_success(int optRows_success) { this.optRows_success = optRows_success; } public long getOptRows_failure() { return optRows_failure; } public void setOptRows_failure(int optRows_failure) { this.optRows_failure = optRows_failure; } public List<String> getRowtitle() { return rowtitle; } public List<List<String>> getFailrows() { return failrows; } public List<String> getFailmsgs() { return failmsgs; } public void setFailmsgs(List<String> failmsgs) { this.failmsgs = failmsgs; }} |
5、導入實現方法：
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public static void main(String[] args){ ExcelImportUtil importUtil; try { importUtil = new ExcelImportUtil("d:/data.xls",0, new HxlsInterfaceImpl()); importUtil.process(); } catch (FileNotFoundException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } catch (SQLException e) { e.printStackTrace(); }} |
希望本文所述對大家java程序設計有所幫助。
原文鏈接：http://blog.csdn.net/lovoo/article/details/77905613
