本篇文章给大家分享的是有关利用Java怎么将excel表格批量导入到数据库,小编觉得挺实用的,因此分享给大家学习,希望大家阅读完这篇文章后可以有所收获,话不多说,跟着小编一起来看看吧。
创建导入抽象类
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;public abstract class HxlsAbstract implements HSSFListener { private int minColumns; private POIFSFileSystem fs; private PrintStream output; private int lastRowNumber; private int lastColumnNumber; private boolean outputFormulaValues = true; private SheetRecordCollectingListener workbookBuildingListener; private HSSFWorkbook stubWorkbook; // Records we pick up as we process private SSTRecord sstRecord; private FormatTrackingHSSFListener formatListener; 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记录行操作方法,以行索引和行元素列表为参数,对一行元素进行操作,元素为String类型// public abstract void optRows(int curRow, List<String> rowlist) throws SQLException ; //excel记录行操作方法,以sheet索引,行索引和行元素列表为参数,对sheet的一行元素进行操作,元素为String类型 public abstract void optRows(int sheetIndex,int curRow, List<String> rowlist) throws Exception; 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); } @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; //进入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," "); } // 如果遇到能打印的东西,在这里打印 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; // 行结束时的操作 if (record instanceof LastCellOfRowDummyRecord) { if (minColumns > 0) { // 列值重新置空 if (lastColumnNumber == -1) { lastColumnNumber = 0; } } // 行结束时, 调用 optRows() 方法 lastColumnNumber = -1; try { optRows(sheetIndex,curRow, rowlist); } catch (Exception e) { e.printStackTrace(); } rowlist.clear(); } }}
创建导入接口
package com.gcloud.common.excel;import java.util.List;public interface HxlsOptRowsInterface { public static final String SUCCESS="success"; public String optRows(int sheetIndex, int curRow, List<String> rowlist) throws Exception;}
创建实现类, 在这个方法实现把导入的数据添加到数据库中
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 { //在这里执行数据的插入 //System.out.println(rowlist); //saveData(datalist); return ""; }}
导入工具实现
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;public class ExcelImportUtil extends HxlsAbstract{ //数据处理bean private HxlsOptRowsInterface hxlsOptRowsInterface; //处理数据总数 private int optRows_sum = 0; //处理数据成功数量 private int optRows_success = 0; //处理数据失败数量 private int optRows_failure = 0; //excel表格每列 private List<String> rowtitle ; //失败数据 private List<List<String>> failrows; //失败原因 private List<String> failmsgs ; //要处理数据所在的sheet索引,从0开始 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 { //将rowlist的长度补齐和一致 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){//记录 rowtitle.addAll(rowlist); }else{ String result = hxlsOptRowsInterface.optRows(sheetIndex, curRow, rowlist); if(!result.equals(hxlsOptRowsInterface.SUCCESS)){ optRows_failure++; //失败数据 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; }}
导入实现方法:
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(); }}
以上就是利用Java怎么将excel表格批量导入到数据库,小编相信有部分知识点可能是我们日常工作会见到或用到的。希望你能通过这篇文章学到更多知识。更多详情敬请关注编程网行业资讯频道。