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+package com.diagbot.facade;
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+
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+import com.diagbot.entity.Ex;
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+import com.diagbot.util.ReflectUtil;
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+import com.diagbot.util.StringUtil;
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+import com.google.common.collect.Lists;
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+import org.apache.commons.collections4.map.LinkedMap;
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+import org.apache.poi.hssf.usermodel.HSSFDateUtil;
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+import org.apache.poi.openxml4j.exceptions.OpenXML4JException;
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+import org.apache.poi.openxml4j.opc.OPCPackage;
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+import org.apache.poi.openxml4j.opc.PackageAccess;
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+import org.apache.poi.ss.usermodel.BuiltinFormats;
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+import org.apache.poi.ss.usermodel.DataFormatter;
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+import org.apache.poi.xssf.eventusermodel.ReadOnlySharedStringsTable;
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+import org.apache.poi.xssf.eventusermodel.XSSFReader;
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+import org.apache.poi.xssf.model.StylesTable;
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+import org.apache.poi.xssf.usermodel.XSSFCellStyle;
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+import org.apache.poi.xssf.usermodel.XSSFRichTextString;
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+import org.springframework.web.multipart.MultipartFile;
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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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+
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+import javax.xml.parsers.ParserConfigurationException;
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+import javax.xml.parsers.SAXParser;
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+import javax.xml.parsers.SAXParserFactory;
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+import java.io.IOException;
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+import java.io.InputStream;
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+import java.io.PrintStream;
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+import java.lang.reflect.Field;
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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.LinkedHashMap;
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+import java.util.List;
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+import java.util.Map;
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+
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+/**
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+ * @description:
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+ * @author: zhoutg
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+ * @time: 2021/5/19 16:34
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+ */
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+public class XLSXCovertCSVReader {
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+ /**
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+ * The type of the data value is indicated by an attribute on the cell. The
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+ * value is usually in a "v" element within the cell.
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+ */
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+ enum xssfDataType {
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+ BOOL, ERROR, FORMULA, INLINESTR, SSTINDEX, NUMBER,
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+ }
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+
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+ /**
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+ * 使用xssf_sax_API处理Excel,请参考: http://poi.apache.org/spreadsheet/how-to.html#xssf_sax_api
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+ * <p/>
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+ * Also see Standard ECMA-376, 1st edition, part 4, pages 1928ff, at
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+ * http://www.ecma-international.org/publications/standards/Ecma-376.htm
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+ * <p/>
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+ * A web-friendly version is http://openiso.org/Ecma/376/Part4
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+ */
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+ class MyXSSFSheetHandler extends DefaultHandler {
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+
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+ /**
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+ * Table with styles
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+ */
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+ private StylesTable stylesTable;
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+
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+ /**
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+ * Table with unique strings
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+ */
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+ private ReadOnlySharedStringsTable sharedStringsTable;
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+
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+ /**
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+ * Destination for data
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+ */
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+ private final PrintStream output;
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+
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+ /**
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+ * Number of columns to read starting with leftmost
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+ */
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+ private final int minColumnCount;
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+
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+ // Set when V start element is seen
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+ private boolean vIsOpen;
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+
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+ // Set when cell start element is seen;
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+ // used when cell close element is seen.
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+ private xssfDataType nextDataType;
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+
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+ // Used to format numeric cell values.
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+ private short formatIndex;
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+ private String formatString;
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+ private final DataFormatter formatter;
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+
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+ private int thisColumn = -1;
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+ // The last column printed to the output stream
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+ private int lastColumnNumber = -1;
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+
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+ // Gathers characters as they are seen.
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+ private StringBuffer value;
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+ private String[] record;
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+ private List<String[]> rows = new ArrayList<String[]>();
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+ private boolean isCellNull = false;
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+
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+ /**
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+ * Accepts objects needed while parsing.
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+ *
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+ * @param styles Table of styles
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+ * @param strings Table of shared strings
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+ * @param cols Minimum number of columns to show
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+ * @param target Sink for output
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+ */
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+ public MyXSSFSheetHandler(StylesTable styles,
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+ ReadOnlySharedStringsTable strings, int cols, PrintStream target) {
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+ this.stylesTable = styles;
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+ this.sharedStringsTable = strings;
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+ this.minColumnCount = cols;
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+ this.output = target;
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+ this.value = new StringBuffer();
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+ this.nextDataType = xssfDataType.NUMBER;
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+ this.formatter = new DataFormatter();
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+ record = new String[this.minColumnCount];
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+ rows.clear();// 每次读取都清空行集合
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+ }
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+
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+ /*
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+ * (non-Javadoc)
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+ *
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+ * @see
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+ * org.xml.sax.helpers.DefaultHandler#startElement(java.lang.String,
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+ * java.lang.String, java.lang.String, org.xml.sax.Attributes)
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+ */
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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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+
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+ if ("inlineStr".equals(name) || "v".equals(name)) {
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+ vIsOpen = true;
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+ // Clear contents cache
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+ value.setLength(0);
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+ }
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+ // c => cell
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+ else if ("c".equals(name)) {
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+ // Get the cell reference
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+ String r = attributes.getValue("r");
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+ int firstDigit = -1;
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+ for (int c = 0; c < r.length(); ++c) {
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+ if (Character.isDigit(r.charAt(c))) {
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+ firstDigit = c;
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+ break;
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+ }
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+ }
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+ thisColumn = nameToColumn(r.substring(0, firstDigit));
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+
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+ // Set up defaults.
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+ this.nextDataType = xssfDataType.NUMBER;
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+ this.formatIndex = -1;
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+ this.formatString = null;
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+ String cellType = attributes.getValue("t");
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+ String cellStyleStr = attributes.getValue("s");
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+ if ("b".equals(cellType)) {
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+ nextDataType = xssfDataType.BOOL;
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+ } else if ("e".equals(cellType)) {
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+ nextDataType = xssfDataType.ERROR;
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+ } else if ("inlineStr".equals(cellType)) {
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+ nextDataType = xssfDataType.INLINESTR;
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+ } else if ("s".equals(cellType)) {
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+ nextDataType = xssfDataType.SSTINDEX;
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+ } else if ("str".equals(cellType)) {
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+ nextDataType = xssfDataType.FORMULA;
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+ } else if (cellStyleStr != null) {
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+ // It's a number, but almost certainly one
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+ // with a special style or format
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+ int styleIndex = Integer.parseInt(cellStyleStr);
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+ XSSFCellStyle style = stylesTable.getStyleAt(styleIndex);
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+ this.formatIndex = style.getDataFormat();
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+ this.formatString = style.getDataFormatString();
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+ if (this.formatString == null) {
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+ this.formatString = BuiltinFormats
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+ .getBuiltinFormat(this.formatIndex);
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+ }
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+ }
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+ }
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+
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+ }
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+
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+ /*
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+ * (non-Javadoc)
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+ *
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+ * @see org.xml.sax.helpers.DefaultHandler#endElement(java.lang.String,
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+ * java.lang.String, java.lang.String)
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+ */
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+ public void endElement(String uri, String localName, String name)
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+ throws SAXException {
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+
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+ String thisStr = null;
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+
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+ // v => contents of a cell
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+ if ("v".equals(name)) {
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+ // Process the value contents as required.
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+ // Do now, as characters() may be called more than once
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+ switch (nextDataType) {
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+
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+ case BOOL:
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+ char first = value.charAt(0);
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+ thisStr = first == '0' ? "FALSE" : "TRUE";
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+ break;
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+
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+ case ERROR:
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+ thisStr = "ERROR:" + value.toString();
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+ break;
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+
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+ case FORMULA:
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+ // A formula could result in a string value,
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+ // so always add double-quote characters.
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+ thisStr = value.toString();
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+ break;
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+
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+ case INLINESTR:
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+ // TODO: have seen an example of this, so it's untested.
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+ XSSFRichTextString rtsi = new XSSFRichTextString(
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+ value.toString());
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+ thisStr = rtsi.toString();
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+ break;
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+
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+ case SSTINDEX:
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+ String sstIndex = value.toString();
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+ try {
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+ int idx = Integer.parseInt(sstIndex);
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+ XSSFRichTextString rtss = new XSSFRichTextString(
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+ sharedStringsTable.getEntryAt(idx));
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+ thisStr = rtss.toString();
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+ } catch (NumberFormatException ex) {
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+ output.println("Failed to parse SST index '" + sstIndex
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+ + "': " + ex.toString());
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+ }
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+ break;
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+
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+ case NUMBER:
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+ String n = value.toString();
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+ // 判断是否是日期格式
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+ if (HSSFDateUtil.isADateFormat(this.formatIndex, n)) {
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+ Double d = Double.parseDouble(n);
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+ Date date = HSSFDateUtil.getJavaDate(d);
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+ thisStr = formateDateToString(date);
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+ } else if (this.formatString != null) {
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+ thisStr = formatter.formatRawCellContents(
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+ Double.parseDouble(n), this.formatIndex,
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+ this.formatString);
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+ } else {
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+ thisStr = n;
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+ }
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+ break;
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+
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+ default:
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+ thisStr = "(TODO: Unexpected type: " + nextDataType + ")";
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+ break;
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+ }
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+
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+ // Output after we've seen the string contents
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+ // Emit commas for any fields that were missing on this row
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+ if (lastColumnNumber == -1) {
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+ lastColumnNumber = 0;
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+ }
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+ //判断单元格的值是否为空
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+ if (thisStr == null || "".equals(isCellNull)) {
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+ isCellNull = true;// 设置单元格是否为空值
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+ }
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+ // trim()
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+ if (thisStr != null) {
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+ thisStr = thisStr.trim();
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+ }
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+ record[thisColumn] = thisStr;
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+ // Update column
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+ if (thisColumn > -1) {
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+ lastColumnNumber = thisColumn;
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+ }
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+
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+ } else if ("row".equals(name)) {
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+ // Print out any missing commas if needed
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+ if (minColumns > 0) {
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+ // Columns are 0 based
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+ if (lastColumnNumber == -1) {
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+ lastColumnNumber = 0;
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+ }
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+ if (isCellNull == false && record[0] != null
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+ && record[1] != null)// 判断是否空行
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+ {
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+ rows.add(record.clone());
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+ isCellNull = false;
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+ for (int i = 0; i < record.length; i++) {
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+ record[i] = null;
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+ }
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+ }
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+ }
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+ lastColumnNumber = -1;
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+ }
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+
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+ }
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+
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+ public List<String[]> getRows() {
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+ return rows;
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+ }
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+
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+ public void setRows(List<String[]> rows) {
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+ this.rows = rows;
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+ }
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+
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+ /**
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+ * Captures characters only if a suitable element is open. Originally
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+ * was just "v"; extended for inlineStr also.
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+ */
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+ public void characters(char[] ch, int start, int length)
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+ throws SAXException {
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+ if (vIsOpen) {
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+ value.append(ch, start, length);
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+ }
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+ }
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+
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+ /**
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+ * Converts an Excel column name like "C" to a zero-based index.
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+ *
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+ * @param name
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+ * @return Index corresponding to the specified name
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+ */
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+ private int nameToColumn(String name) {
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+ int column = -1;
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+ for (int i = 0; i < name.length(); ++i) {
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+ int c = name.charAt(i);
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+ column = (column + 1) * 26 + c - 'A';
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+ }
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+ return column;
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+ }
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+
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+ private String formateDateToString(Date date) {
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+ SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");//格式化日期
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+ return sdf.format(date);
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+
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+ }
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+
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+ }
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+
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+ // /
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+
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+ private OPCPackage xlsxPackage;
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+ private int minColumns;
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+ private PrintStream output;
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+ private String sheetName;
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+
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+ /**
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+ * Creates a new XLSX -> CSV converter
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+ *
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+ * @param pkg The XLSX package to process
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+ * @param output The PrintStream to output the CSV to
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+ * @param minColumns The minimum number of columns to output, or -1 for no minimum
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+ */
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+ public XLSXCovertCSVReader(OPCPackage pkg, PrintStream output,
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+ String sheetName, int minColumns) {
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+ this.xlsxPackage = pkg;
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+ this.output = output;
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+ this.minColumns = minColumns;
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+ this.sheetName = sheetName;
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+ }
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+
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+ /**
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+ * Parses and shows the content of one sheet using the specified styles and
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+ * shared-strings tables.
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+ *
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+ * @param styles
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+ * @param strings
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+ * @param sheetInputStream
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+ */
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+ public List<String[]> processSheet(StylesTable styles,
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+ ReadOnlySharedStringsTable strings, InputStream sheetInputStream)
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+ throws IOException, ParserConfigurationException, SAXException {
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+
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+ InputSource sheetSource = new InputSource(sheetInputStream);
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+ SAXParserFactory saxFactory = SAXParserFactory.newInstance();
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+ SAXParser saxParser = saxFactory.newSAXParser();
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+ XMLReader sheetParser = saxParser.getXMLReader();
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+ MyXSSFSheetHandler handler = new MyXSSFSheetHandler(styles, strings,
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+ this.minColumns, this.output);
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+ sheetParser.setContentHandler(handler);
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+ sheetParser.parse(sheetSource);
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+ return handler.getRows();
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+ }
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+
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+ /**
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+ * 初始化这个处理程序 将
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+ *
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+ * @throws IOException
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+ * @throws OpenXML4JException
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+ * @throws ParserConfigurationException
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+ * @throws SAXException
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+ */
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+ public List<String[]> process() throws IOException, OpenXML4JException,
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+ ParserConfigurationException, SAXException {
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+
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+ ReadOnlySharedStringsTable strings = new ReadOnlySharedStringsTable(
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+ this.xlsxPackage);
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+ XSSFReader xssfReader = new XSSFReader(this.xlsxPackage);
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+ List<String[]> list = null;
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+ StylesTable styles = xssfReader.getStylesTable();
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+ XSSFReader.SheetIterator iter = (XSSFReader.SheetIterator) xssfReader
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+ .getSheetsData();
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+ int index = 0;
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+ while (iter.hasNext()) {
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+ InputStream stream = iter.next();
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+ String sheetNameTemp = iter.getSheetName();
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+ if (this.sheetName.equals(sheetNameTemp)) {
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+ list = processSheet(styles, strings, stream);
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+ stream.close();
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+ ++index;
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+ }
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+ }
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+ return list;
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+ }
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|
|
+
|
|
|
+ /**
|
|
|
+ * 读取Excel
|
|
|
+ *
|
|
|
+ * @param path 文件路径
|
|
|
+ * @param sheetName sheet名称
|
|
|
+ * @param minColumns 列总数
|
|
|
+ * @return
|
|
|
+ * @throws SAXException
|
|
|
+ * @throws ParserConfigurationException
|
|
|
+ * @throws OpenXML4JException
|
|
|
+ * @throws IOException
|
|
|
+ */
|
|
|
+ private static List<String[]> readerExcel(String path, String sheetName,
|
|
|
+ int minColumns) throws IOException, OpenXML4JException,
|
|
|
+ ParserConfigurationException, SAXException {
|
|
|
+ OPCPackage p = OPCPackage.open(path, PackageAccess.READ);
|
|
|
+ XLSXCovertCSVReader xlsx2csv = new XLSXCovertCSVReader(p, System.out,
|
|
|
+ sheetName, minColumns);
|
|
|
+ List<String[]> list = xlsx2csv.process();
|
|
|
+ p.close();
|
|
|
+ return list;
|
|
|
+ }
|
|
|
+
|
|
|
+ /**
|
|
|
+ * 读取Excel
|
|
|
+ *
|
|
|
+ * @param inputStream
|
|
|
+ * @param sheetName
|
|
|
+ * @param minColumns
|
|
|
+ * @return
|
|
|
+ * @throws IOException
|
|
|
+ * @throws OpenXML4JException
|
|
|
+ * @throws ParserConfigurationException
|
|
|
+ * @throws SAXException
|
|
|
+ */
|
|
|
+ private static List<String[]> readerExcel(InputStream inputStream, String sheetName,
|
|
|
+ int minColumns) throws IOException, OpenXML4JException,
|
|
|
+ ParserConfigurationException, SAXException {
|
|
|
+ OPCPackage p = OPCPackage.open(inputStream);
|
|
|
+ XLSXCovertCSVReader xlsx2csv = new XLSXCovertCSVReader(p, System.out,
|
|
|
+ sheetName, minColumns);
|
|
|
+ List<String[]> list = xlsx2csv.process();
|
|
|
+ p.close();
|
|
|
+ return list;
|
|
|
+ }
|
|
|
+
|
|
|
+ /**
|
|
|
+ * 读取数据
|
|
|
+ *
|
|
|
+ * @param path
|
|
|
+ * @param sheetName
|
|
|
+ * @param colNum
|
|
|
+ * @param c
|
|
|
+ * @return
|
|
|
+ */
|
|
|
+ public static <T> List<T> readData(String path, String sheetName, int colNum, Class<T> c) {
|
|
|
+ List<T> list = Lists.newArrayList();
|
|
|
+ try {
|
|
|
+ List<String[]> stringList = XLSXCovertCSVReader.readerExcel(path, sheetName, colNum);
|
|
|
+ return dealData(stringList, c);
|
|
|
+ } catch (Exception e) {
|
|
|
+ e.printStackTrace();
|
|
|
+ }
|
|
|
+ return list;
|
|
|
+ }
|
|
|
+
|
|
|
+ /**
|
|
|
+ * 读取数据
|
|
|
+ *
|
|
|
+ * @param file
|
|
|
+ * @param sheetName
|
|
|
+ * @param colNum
|
|
|
+ * @param c
|
|
|
+ * @return
|
|
|
+ */
|
|
|
+ public static <T> List<T> readData(MultipartFile file, String sheetName, int colNum, Class<T> c) {
|
|
|
+ List<T> list = Lists.newArrayList();
|
|
|
+ try {
|
|
|
+ List<String[]> stringList = XLSXCovertCSVReader.readerExcel(file.getInputStream(), sheetName, colNum);
|
|
|
+ return dealData(stringList, c);
|
|
|
+ } catch (Exception e) {
|
|
|
+ e.printStackTrace();
|
|
|
+ }
|
|
|
+ return list;
|
|
|
+ }
|
|
|
+
|
|
|
+ /**
|
|
|
+ * 数据处理
|
|
|
+ *
|
|
|
+ * @param list
|
|
|
+ * @param c
|
|
|
+ * @param <T>
|
|
|
+ * @return
|
|
|
+ */
|
|
|
+ public static <T> List<T> dealData(List<String[]> list, Class<T> c) {
|
|
|
+ List<T> res = Lists.newArrayList();
|
|
|
+ try {
|
|
|
+ // 标题
|
|
|
+ String[] titleRow = list.get(0);
|
|
|
+ Map<Integer, String> colMap = new LinkedMap();
|
|
|
+ for (int i = 0; i < titleRow.length; i++) {
|
|
|
+ if (StringUtil.isBlank(titleRow[i])) {
|
|
|
+ break;
|
|
|
+ }
|
|
|
+ colMap.put(i, titleRow[i]);
|
|
|
+ }
|
|
|
+ // System.out.println(colMap);
|
|
|
+
|
|
|
+ // 字段映射
|
|
|
+ Field[] fields = c.getDeclaredFields();
|
|
|
+ // 属性和表格列对应
|
|
|
+ Map<String, Map<String, String>> classMap = new LinkedHashMap();
|
|
|
+ for (Field field : fields) {
|
|
|
+ if (field.isAnnotationPresent(Ex.class)) {
|
|
|
+ Ex annotation = field.getAnnotation(Ex.class);
|
|
|
+ Map<String, String> propertyMap = new LinkedHashMap<>();
|
|
|
+ propertyMap.put("field", field.getName());
|
|
|
+ propertyMap.put("convertType", field.getGenericType().toString());
|
|
|
+ classMap.put(annotation.name(), propertyMap);
|
|
|
+ }
|
|
|
+ field.getClass();
|
|
|
+ }
|
|
|
+ // System.out.println(classMap);
|
|
|
+
|
|
|
+ // 有效数据读取
|
|
|
+ int rowNum = 1;
|
|
|
+ for (String[] row : list) {
|
|
|
+ if (rowNum++ == 1) {
|
|
|
+ continue;
|
|
|
+ }
|
|
|
+ T obj = c.newInstance();
|
|
|
+ for (int i = 0; i < row.length; i++) {
|
|
|
+ if (classMap.get(colMap.get(i)) == null) {
|
|
|
+ continue;
|
|
|
+ }
|
|
|
+ String property = classMap.get(colMap.get(i)).get("field");
|
|
|
+ String convertType = classMap.get(colMap.get(i)).get("convertType");
|
|
|
+ // System.out.println(property + ":" + row[i]);
|
|
|
+ if (StringUtil.isNotBlank(property)) {
|
|
|
+ Object value = convertValue(row[i], convertType);
|
|
|
+ if (value != null) {
|
|
|
+ ReflectUtil.setFieldValue(obj, property, value);
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+ res.add(obj);
|
|
|
+ }
|
|
|
+ } catch (Exception e) {
|
|
|
+ e.printStackTrace();
|
|
|
+ }
|
|
|
+ return res;
|
|
|
+ }
|
|
|
+
|
|
|
+ /**
|
|
|
+ * 根据反射转成不同的类型
|
|
|
+ *
|
|
|
+ * @param object
|
|
|
+ * @param convertType
|
|
|
+ * @return
|
|
|
+ */
|
|
|
+ public static Object convertValue(String object, String convertType) {
|
|
|
+ Object res = null;
|
|
|
+ if (object == null) {
|
|
|
+ return null;
|
|
|
+ }
|
|
|
+ try {
|
|
|
+ switch (convertType) {
|
|
|
+ case "class java.lang.Integer":
|
|
|
+ case "int":
|
|
|
+ res = Integer.parseInt(object);
|
|
|
+ break;
|
|
|
+ case "class java.lang.Long":
|
|
|
+ case "long":
|
|
|
+ res = Long.parseLong(object);
|
|
|
+ break;
|
|
|
+ case "class java.lang.Float":
|
|
|
+ case "float":
|
|
|
+ res = Float.parseFloat(object);
|
|
|
+ break;
|
|
|
+ case "class java.lang.Double":
|
|
|
+ case "double":
|
|
|
+ res = Double.parseDouble(object);
|
|
|
+ break;
|
|
|
+ case "class java.lang.Boolean":
|
|
|
+ case "boolean":
|
|
|
+ res = Boolean.parseBoolean(object);
|
|
|
+ break;
|
|
|
+ case "class java.lang.String":
|
|
|
+ res = object;
|
|
|
+ break;
|
|
|
+ default:
|
|
|
+ res = object;
|
|
|
+ break;
|
|
|
+ }
|
|
|
+ } catch (Exception e) {
|
|
|
+ // e.printStackTrace();
|
|
|
+ return null;
|
|
|
+ }
|
|
|
+ return res;
|
|
|
+ }
|
|
|
+}
|