poi 5.2
This commit is contained in:
thinkgem
@@ -194,11 +194,6 @@
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<artifactId>poi-ooxml</artifactId>
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<version>${poi.version}</version>
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</dependency>
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<dependency>
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<groupId>org.apache.poi</groupId>
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<artifactId>poi-ooxml-schemas</artifactId>
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<version>${poi.version}</version>
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</dependency>
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<dependency>
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<groupId>org.apache.poi</groupId>
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<artifactId>poi-scratchpad</artifactId>
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@@ -1,235 +0,0 @@
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/**
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* Copyright (c) 2013-Now http://jeesite.com All rights reserved.
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* No deletion without permission, or be held responsible to law.
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*/
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package com.jeesite.common.utils.excel;
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import java.io.InputStream;
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import java.math.BigDecimal;
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import java.text.SimpleDateFormat;
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import java.util.ArrayList;
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import java.util.Date;
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import java.util.Iterator;
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import java.util.List;
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import org.apache.poi.hssf.usermodel.HSSFDateUtil;
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import org.apache.poi.openxml4j.opc.OPCPackage;
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import org.apache.poi.xssf.eventusermodel.XSSFReader;
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import org.apache.poi.xssf.model.SharedStringsTable;
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import org.apache.poi.xssf.usermodel.XSSFRichTextString;
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import org.xml.sax.Attributes;
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import org.xml.sax.InputSource;
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import org.xml.sax.SAXException;
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import org.xml.sax.XMLReader;
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import org.xml.sax.helpers.DefaultHandler;
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import org.xml.sax.helpers.XMLReaderFactory;
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/**
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* Excel超大数据读取，抽象Excel2007读取器，excel2007的底层数据结构是xml文件，采用SAX的事件驱动的方法解析
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* xml，需要继承DefaultHandler，在遇到文件内容时，事件会触发，这种做法可以大大降低 内存的耗费，特别使用于大数据量的文件。
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* @version 2014-9-2
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*/
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public abstract class ExcelReader extends DefaultHandler {
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// 共享字符串表
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private SharedStringsTable sst;
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// 上一次的内容
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private String lastContents;
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private boolean nextIsString;
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private int sheetIndex = -1;
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private List<String> rowList = new ArrayList<String>();
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// 当前行
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private int curRow = 0;
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// 当前列
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private int curCol = 0;
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// 日期标志
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private boolean dateFlag;
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// 数字标志
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private boolean numberFlag;
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private boolean isTElement;
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/**
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* 遍历工作簿中所有的电子表格
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* @param filename
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* @throws Exception
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*/
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public void process(String filename) throws Exception {
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OPCPackage pkg = OPCPackage.open(filename);
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XSSFReader r = new XSSFReader(pkg);
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SharedStringsTable sst = r.getSharedStringsTable();
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XMLReader parser = fetchSheetParser(sst);
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Iterator<InputStream> sheets = r.getSheetsData();
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while (sheets.hasNext()) {
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curRow = 0;
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sheetIndex++;
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InputStream sheet = sheets.next();
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InputSource sheetSource = new InputSource(sheet);
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parser.parse(sheetSource);
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sheet.close();
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}
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}
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/**
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* 只遍历一个电子表格，其中sheetId为要遍历的sheet索引，从1开始，1-3
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* @param filename
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* @param sheetId
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* @throws Exception
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*/
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public void process(String filename, int sheetId) throws Exception {
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OPCPackage pkg = OPCPackage.open(filename);
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XSSFReader r = new XSSFReader(pkg);
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SharedStringsTable sst = r.getSharedStringsTable();
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XMLReader parser = fetchSheetParser(sst);
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// 根据 rId# 或 rSheet# 查找sheet
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InputStream sheet2 = r.getSheet("rId" + sheetId);
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sheetIndex++;
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InputSource sheetSource = new InputSource(sheet2);
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parser.parse(sheetSource);
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sheet2.close();
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}
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public XMLReader fetchSheetParser(SharedStringsTable sst)
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throws SAXException {
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XMLReader parser = XMLReaderFactory.createXMLReader("org.apache.xerces.parsers.SAXParser");
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this.sst = sst;
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parser.setContentHandler(this);
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return parser;
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}
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@Override
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public void startElement(String uri, String localName, String name,
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Attributes attributes) throws SAXException {
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// System.out.println("startElement: " + localName + ", " + name + ", " + attributes);
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// c => 单元格
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if ("c".equals(name)) {
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// 如果下一个元素是 SST 的索引，则将nextIsString标记为true
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String cellType = attributes.getValue("t");
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if ("s".equals(cellType)) {
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nextIsString = true;
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} else {
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nextIsString = false;
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}
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// 日期格式
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String cellDateType = attributes.getValue("s");
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if ("1".equals(cellDateType)) {
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dateFlag = true;
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} else {
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dateFlag = false;
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}
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String cellNumberType = attributes.getValue("s");
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if ("2".equals(cellNumberType)) {
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numberFlag = true;
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} else {
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numberFlag = false;
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}
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}
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// 当元素为t时
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if ("t".equals(name)) {
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isTElement = true;
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} else {
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isTElement = false;
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}
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// 置空
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lastContents = "";
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}
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@Override
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public void endElement(String uri, String localName, String name)
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throws SAXException {
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// System.out.println("endElement: " + localName + ", " + name);
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// 根据SST的索引值的到单元格的真正要存储的字符串
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// 这时characters()方法可能会被调用多次
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if (nextIsString) {
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try {
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int idx = Integer.parseInt(lastContents);
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lastContents = new XSSFRichTextString(sst.getEntryAt(idx))
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.toString();
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} catch (Exception e) {
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}
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}
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// t元素也包含字符串
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if (isTElement) {
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String value = lastContents.trim();
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rowList.add(curCol, value);
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curCol++;
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isTElement = false;
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// v => 单元格的值，如果单元格是字符串则v标签的值为该字符串在SST中的索引
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// 将单元格内容加入rowlist中，在这之前先去掉字符串前后的空白符
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} else if ("v".equals(name)) {
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String value = lastContents.trim();
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value = "".equals(value) ? " " : value;
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try {
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// 日期格式处理
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if (dateFlag) {
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Date date = HSSFDateUtil.getJavaDate(Double.valueOf(value));
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SimpleDateFormat dateFormat = new SimpleDateFormat("dd/MM/yyyy");
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value = dateFormat.format(date);
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}
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// 数字类型处理
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if (numberFlag) {
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BigDecimal bd = new BigDecimal(value);
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value = bd.setScale(3, BigDecimal.ROUND_UP).toString();
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}
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} catch (Exception e) {
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// 转换失败仍用读出来的值
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}
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rowList.add(curCol, value);
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curCol++;
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} else {
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// 如果标签名称为 row ，这说明已到行尾，调用 optRows() 方法
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if ("row".equals(name)) {
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getRows(sheetIndex + 1, curRow, rowList);
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rowList.clear();
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curRow++;
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curCol = 0;
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}
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}
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}
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@Override
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public void characters(char[] ch, int start, int length)
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throws SAXException {
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// 得到单元格内容的值
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lastContents += new String(ch, start, length);
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}
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/**
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* 获取行数据回调
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* @param sheetIndex
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* @param curRow
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* @param rowList
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*/
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public abstract void getRows(int sheetIndex, int curRow, List<String> rowList);
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// /**
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// * 测试方法
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// */
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// public static void main(String[] args) throws Exception {
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//
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// String file = "E:/销售数据导入.xlsx";
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//
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// ExcelReader reader = new ExcelReader() {
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// @Override
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// public void getRows(int sheetIndex, int curRow, List<String> rowList) {
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//
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// System.out.println("Sheet:" + sheetIndex + ", Row:" + curRow + ", Data:" +rowList);
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//
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// }
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// };
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// reader.process(file, 1);
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//
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// }
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}
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@@ -1,343 +0,0 @@
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/**
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* Copyright (c) 2013-Now http://jeesite.com All rights reserved.
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* No deletion without permission, or be held responsible to law.
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*/
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package com.jeesite.common.utils.excel;
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import java.io.File;
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import java.io.FileInputStream;
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import java.io.FileOutputStream;
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import java.io.FileWriter;
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import java.io.IOException;
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import java.io.InputStream;
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import java.io.OutputStream;
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import java.io.Writer;
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import java.util.Calendar;
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import java.util.Enumeration;
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import java.util.zip.ZipEntry;
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import java.util.zip.ZipFile;
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import java.util.zip.ZipOutputStream;
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import org.apache.poi.hssf.util.CellReference;
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import org.apache.poi.ss.usermodel.DateUtil;
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import org.apache.poi.xssf.usermodel.XSSFSheet;
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import org.apache.poi.xssf.usermodel.XSSFWorkbook;
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/**
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* Excel超大数据写入，抽象excel2007读入器，先构建.xlsx一张模板，改写模板中的sheet.xml,
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* 使用这种方法 写入.xlsx文件，不需要太大的内存
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* @version 2014-9-2
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*/
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public abstract class ExcelWriter {
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private SpreadsheetWriter sw;
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/**
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* 写入电子表格的主要流程
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*
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* @param fileName
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* @throws Exception
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*/
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@SuppressWarnings("resource")
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public void process(String fileName) throws Exception {
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// 建立工作簿和电子表格对象
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XSSFWorkbook wb = new XSSFWorkbook();
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XSSFSheet sheet = wb.createSheet("sheet1");
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// 持有电子表格数据的xml文件名 例如 /xl/worksheets/sheet1.xml
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String sheetRef = sheet.getPackagePart().getPartName().getName();
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// 保存模板
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FileOutputStream os = new FileOutputStream("template.xlsx");
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wb.write(os);
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os.close();
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// 生成xml文件
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File tmp = File.createTempFile("sheet", ".xml");
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Writer fw = new FileWriter(tmp);
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sw = new SpreadsheetWriter(fw);
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generate();
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fw.close();
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// 使用产生的数据替换模板
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File templateFile = new File("template.xlsx");
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FileOutputStream out = new FileOutputStream(fileName);
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substitute(templateFile, tmp, sheetRef.substring(1), out);
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out.close();
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// 删除文件之前调用一下垃圾回收器，否则无法删除模板文件
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System.gc();
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// 删除临时模板文件
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if (templateFile.isFile() && templateFile.exists()) {
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templateFile.delete();
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}
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}
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/**
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* 类使用者应该使用此方法进行写操作
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*
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* @throws Exception
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*/
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public abstract void generate() throws Exception;
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public void beginSheet() throws IOException {
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sw.beginSheet();
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}
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public void insertRow(int rowNum) throws IOException {
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sw.insertRow(rowNum);
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}
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public void createCell(int columnIndex, String value) throws IOException {
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sw.createCell(columnIndex, value, -1);
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}
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public void createCell(int columnIndex, double value) throws IOException {
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sw.createCell(columnIndex, value, -1);
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}
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public void endRow() throws IOException {
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sw.endRow();
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}
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public void endSheet() throws IOException {
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sw.endSheet();
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}
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/**
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*
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* @param zipfile the template file
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* @param tmpfile the XML file with the sheet data
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* @param entry the name of the sheet entry to substitute, e.g. xl/worksheets/sheet1.xml
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* @param out the stream to write the result to
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*/
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private static void substitute(File zipfile, File tmpfile, String entry,
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OutputStream out) throws IOException {
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ZipFile zip = null;
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ZipOutputStream zos = null;
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InputStream is = null;
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try{
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zip = new ZipFile(zipfile);
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zos = new ZipOutputStream(out);
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@SuppressWarnings("unchecked")
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Enumeration<ZipEntry> en = (Enumeration<ZipEntry>) zip.entries();
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while (en.hasMoreElements()) {
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ZipEntry ze = en.nextElement();
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if (!ze.getName().equals(entry)) {
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zos.putNextEntry(new ZipEntry(ze.getName()));
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InputStream is2 = null;
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try{
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is2 = zip.getInputStream(ze);
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copyStream(is2, zos);
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}finally {
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if (is2 != null){
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is2.close();
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}
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}
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}
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}
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zos.putNextEntry(new ZipEntry(entry));
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is = new FileInputStream(tmpfile);
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copyStream(is, zos);
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}finally {
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if (is != null){
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is.close();
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}
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if (zos != null){
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zos.close();
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}
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if (zip != null){
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zip.close();
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}
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}
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}
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private static void copyStream(InputStream in, OutputStream out)
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throws IOException {
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byte[] chunk = new byte[1024];
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int count;
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while ((count = in.read(chunk)) >= 0) {
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out.write(chunk, 0, count);
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}
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}
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/**
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* 在写入器中写入电子表格
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*
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*/
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public static class SpreadsheetWriter {
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private final Writer _out;
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private int _rownum;
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private static String LINE_SEPARATOR = System
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.getProperty("line.separator");
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|
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public SpreadsheetWriter(Writer out) {
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_out = out;
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||||
}
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||||
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public void beginSheet() throws IOException {
|
||||
_out.write("<?xml version=\"1.0\" encoding=\"UTF-8\"?>"
|
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+ "<worksheet xmlns=\"http://schemas.openxmlformats.org/spreadsheetml/2006/main\">");
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_out.write("<sheetData>" + LINE_SEPARATOR);
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||||
}
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||||
|
||||
public void endSheet() throws IOException {
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_out.write("</sheetData>");
|
||||
_out.write("</worksheet>");
|
||||
}
|
||||
|
||||
/**
|
||||
* 插入新行
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||||
*
|
||||
* @param rownum
|
||||
* 以0开始
|
||||
*/
|
||||
public void insertRow(int rownum) throws IOException {
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||||
_out.write("<row r=\"" + (rownum + 1) + "\">" + LINE_SEPARATOR);
|
||||
this._rownum = rownum;
|
||||
}
|
||||
|
||||
/**
|
||||
* 插入行结束标志
|
||||
*/
|
||||
public void endRow() throws IOException {
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||||
_out.write("</row>" + LINE_SEPARATOR);
|
||||
}
|
||||
|
||||
/**
|
||||
* 插入新列
|
||||
*
|
||||
* @param columnIndex
|
||||
* @param value
|
||||
* @param styleIndex
|
||||
* @throws IOException
|
||||
*/
|
||||
public void createCell(int columnIndex, String value, int styleIndex)
|
||||
throws IOException {
|
||||
String ref = new CellReference(_rownum, columnIndex)
|
||||
.formatAsString();
|
||||
_out.write("<c r=\"" + ref + "\" t=\"inlineStr\"");
|
||||
if (styleIndex != -1) {
|
||||
_out.write(" s=\"" + styleIndex + "\"");
|
||||
}
|
||||
_out.write(">");
|
||||
_out.write("<is><t>" + encoderXML(value) + "</t></is>");
|
||||
_out.write("</c>");
|
||||
}
|
||||
|
||||
public void createCell(int columnIndex, String value)
|
||||
throws IOException {
|
||||
createCell(columnIndex, value, -1);
|
||||
}
|
||||
|
||||
public void createCell(int columnIndex, double value, int styleIndex)
|
||||
throws IOException {
|
||||
String ref = new CellReference(_rownum, columnIndex)
|
||||
.formatAsString();
|
||||
_out.write("<c r=\"" + ref + "\" t=\"n\"");
|
||||
if (styleIndex != -1) {
|
||||
_out.write(" s=\"" + styleIndex + "\"");
|
||||
}
|
||||
_out.write(">");
|
||||
_out.write("<v>" + value + "</v>");
|
||||
_out.write("</c>");
|
||||
}
|
||||
|
||||
public void createCell(int columnIndex, double value)
|
||||
throws IOException {
|
||||
createCell(columnIndex, value, -1);
|
||||
}
|
||||
|
||||
public void createCell(int columnIndex, Calendar value, int styleIndex)
|
||||
throws IOException {
|
||||
createCell(columnIndex, DateUtil.getExcelDate(value, false),
|
||||
styleIndex);
|
||||
}
|
||||
}
|
||||
|
||||
// XML Encode
|
||||
private static final String[] xmlCode = new String[256];
|
||||
|
||||
static {
|
||||
// Special characters
|
||||
xmlCode['\''] = "'";
|
||||
xmlCode['\"'] = "\""; // double quote
|
||||
xmlCode['&'] = "&"; // ampersand
|
||||
xmlCode['<'] = "<"; // lower than
|
||||
xmlCode['>'] = ">"; // greater than
|
||||
}
|
||||
|
||||
/**
|
||||
* <p>
|
||||
* Encode the given text into xml.
|
||||
* </p>
|
||||
*
|
||||
* @param string the text to encode
|
||||
* @return the encoded string
|
||||
*/
|
||||
public static String encoderXML(String string) {
|
||||
if (string == null) {
|
||||
return "";
|
||||
}
|
||||
int n = string.length();
|
||||
char character;
|
||||
String xmlchar;
|
||||
StringBuffer buffer = new StringBuffer();
|
||||
// loop over all the characters of the String.
|
||||
for (int i = 0; i < n; i++) {
|
||||
character = string.charAt(i);
|
||||
// the xmlcode of these characters are added to a StringBuffer
|
||||
// one by one
|
||||
try {
|
||||
xmlchar = xmlCode[character];
|
||||
if (xmlchar == null) {
|
||||
buffer.append(character);
|
||||
} else {
|
||||
buffer.append(xmlCode[character]);
|
||||
}
|
||||
} catch (ArrayIndexOutOfBoundsException aioobe) {
|
||||
buffer.append(character);
|
||||
}
|
||||
}
|
||||
return buffer.toString();
|
||||
}
|
||||
|
||||
// /**
|
||||
// * 测试方法
|
||||
// */
|
||||
// public static void main(String[] args) throws Exception {
|
||||
//
|
||||
// String file = "E:/测试导出数据.xlsx";
|
||||
//
|
||||
// ExcelWriter writer = new ExcelWriter() {
|
||||
// @Override
|
||||
// public void generate() throws Exception {
|
||||
//
|
||||
// // 电子表格开始
|
||||
// this.beginSheet();
|
||||
//
|
||||
// for (int rownum = 0; rownum < 100; rownum++) {
|
||||
// // 插入新行
|
||||
// this.insertRow(rownum);
|
||||
//
|
||||
// // 建立新单元格,索引值从0开始,表示第一列
|
||||
// this.createCell(0, "第 " + rownum + " 行");
|
||||
// this.createCell(1, 34343.123456789);
|
||||
// this.createCell(2, "23.67%");
|
||||
// this.createCell(3, "12:12:23");
|
||||
// this.createCell(4, "2014-10-11 12:12:23");
|
||||
// this.createCell(5, "true");
|
||||
// this.createCell(6, "false");
|
||||
//
|
||||
// // 结束行
|
||||
// this.endRow();
|
||||
// }
|
||||
//
|
||||
// // 电子表格结束
|
||||
// this.endSheet();
|
||||
// }
|
||||
// };
|
||||
// writer.process(file);
|
||||
// }
|
||||
|
||||
}
|
||||
Reference in New Issue
Block a user