在java中需要帮助来扭曲超链接字段文件
我正在尝试通过具有超链接字段的Java编写excel文件。
我从对象列表写它。 请检查我的代码。
当我给对象列表时它正在工作。 这是写xls文件。
但我也想写超链接。 我应该在下面的代码中改变什么？
只需从exportToExcel方法开始。
package com.ksh; import java.io.ByteArrayOutputStream; import java.io.File; import java.io.FileOutputStream; import java.lang.reflect.Field; import java.lang.reflect.Modifier; import java.math.BigDecimal; import java.text.DecimalFormat; import java.text.SimpleDateFormat; import java.util.ArrayList; import java.util.Date; import java.util.HashMap; import java.util.Iterator; import java.util.List; import java.util.Map; import org.apache.poi.xssf.usermodel.XSSFCell; import org.apache.poi.xssf.usermodel.XSSFRow; import org.apache.poi.xssf.usermodel.XSSFSheet; import org.apache.poi.xssf.usermodel.XSSFWorkbook; import com.ksh.Final.Link; public class OwnClass { private static SimpleDateFormat dateTimeFormatter = new SimpleDateFormat("yyyyMMddHHmmss"); @SuppressWarnings({ "unchecked", "rawtypes" }) private static Map<Class<?>, Class<?>> javaBasicObjectTypeMap = new HashMap(); @SuppressWarnings({ "unchecked", "rawtypes" }) private static Map<Class<?>, Class<?>> floatingPointTypeMap = new HashMap(); static { javaBasicObjectTypeMap.put(Integer.class, Integer.class); javaBasicObjectTypeMap.put(Long.class, Long.class); javaBasicObjectTypeMap.put(Float.class, Float.class); javaBasicObjectTypeMap.put(Double.class, Double.class); javaBasicObjectTypeMap.put(BigDecimal.class, BigDecimal.class); javaBasicObjectTypeMap.put(Character.class, Character.class); javaBasicObjectTypeMap.put(String.class, String.class); javaBasicObjectTypeMap.put(Date.class, Date.class); floatingPointTypeMap.put(Float.class, Float.class); floatingPointTypeMap.put(Double.class, Double.class); floatingPointTypeMap.put(BigDecimal.class, BigDecimal.class); } @SuppressWarnings("rawtypes") public static String exportToExcel(List<?> objectList, ExcelFileParameter config, Map<String, String> fieldNameTitleMap)throws Exception { String filePath = config.getExcelFileAbsolutePath(); if (filePath.isEmpty()) { filePath = dateTimeFormatter.format(new Date()) + ".xlsx"; } File excelFile = new File(filePath); FileOutputStream fos = null; XSSFWorkbook workBook = new XSSFWorkbook(); XSSFSheet sheet = workBook.createSheet(); List rowlist = convertObjectToRowList(objectList, config, fieldNameTitleMap); System.out.println("Kshitij : "+rowlist.size()+"Type : ===="+rowlist.get(0).getClass().getName()); for (int i = 0; (rowlist != null) && (i < rowlist.size()); i++) { List row = (List)rowlist.get(i); XSSFRow excelRow = sheet.createRow(i); for (int j = 0; (row != null) && (j < row.size()); j++) { XSSFCell cell = excelRow.createCell(j); cell.setCellValue((String)row.get(j)); } } ByteArrayOutputStream bos = new ByteArrayOutputStream(); workBook.write(bos); try { fos = new FileOutputStream(excelFile); fos.write(bos.toByteArray()); } catch (Exception ex) { throw ex; } finally { fos.flush(); fos.close(); } return excelFile.getAbsolutePath(); } @SuppressWarnings({ "rawtypes", "unchecked" }) private static List<List<String>> convertObjectToRowList(List<?> objectList, ExcelFileParameter config, Map<String, String> fieldNameTitleMap) throws Exception { if (objectList == null) { throw new Exception("objectList is null!"); } if (objectList.size() == 0) { throw new Exception("objectList is empty!"); } List rowList = new ArrayList(); Class itemClass = objectList.get(0).getClass(); System.out.println("Object List Type is : "+itemClass.getName()); if (javaBasicObjectTypeMap.containsKey(itemClass)) { System.out.println("Non Primitive Type From Java Library"); for (Iterator localIterator = objectList.iterator(); localIterator.hasNext(); ) { Object obj = localIterator.next(); String value = convertFieldValueToString(itemClass, obj, config); List row = new ArrayList(); row.add(value); rowList.add(row); } } else { System.out.println("User Defined Class Type just got"); List allFields = getFields(itemClass); Object excelFields = new ArrayList(); List header = new ArrayList(); String fieldName = null; for (int i = 0; (allFields != null) && (i < allFields.size()); i++) { fieldName = ((Field)allFields.get(i)).getName(); if ((fieldNameTitleMap != null) && (fieldNameTitleMap.keySet().size() > 0)) { if (fieldNameTitleMap.containsKey(fieldName)) { ((List)excelFields).add((Field)allFields.get(i)); header.add((String)fieldNameTitleMap.get(fieldName)); } } else { ((List)excelFields).add((Field)allFields.get(i)); header.add(fieldName); } } rowList.add(header); for(Object object : objectList) { List row = convertToRow(object, config, (List)excelFields); rowList.add(row); } } return rowList; } private static String convertFieldValueToString(Class<?> fieldType, Object fieldValue, ExcelFileParameter config) throws Exception { if (fieldValue == null) { return config.getNullValueStrig(); } if (fieldType.isAssignableFrom(Date.class)) { SimpleDateFormat dateTimeFormat = config.getDateTimeFormat(); if (dateTimeFormat == null) { return fieldValue.toString(); } dateTimeFormat.format(fieldValue); } if ((fieldType == Float.TYPE) || (fieldType == Double.TYPE) || (floatingPointTypeMap.containsKey(fieldType))) { DecimalFormat decimalFormat = config.getDecimalFormat(); if (decimalFormat == null) { return fieldValue.toString(); } decimalFormat.format(fieldValue); } System.out.println("99999999999999999999999999999999999999999 : "+fieldType); if(fieldType == Link.class) { System.out.println("Link Value is Found..."); System.out.println("Field Value : "+fieldValue.toString()); } return fieldValue.toString(); } @SuppressWarnings({ "rawtypes", "unchecked" }) private static List<Field> getFields(Class<?> clazz) { List list = new ArrayList(); Field[] fieldlist = clazz.getDeclaredFields(); for (int i = 0; (fieldlist != null) && (i < fieldlist.length); i++) { Field field = fieldlist[i]; Class type = fieldlist[i].getType(); System.out.println("Type :" +type); int mod = fieldlist[i].getModifiers(); System.out.println("Mode :" +mod); if ((!Modifier.isFinal(mod)) && (!Modifier.isStatic(mod))) { if (type.isPrimitive()) { list.add(field); } else if (javaBasicObjectTypeMap.containsKey(type)) { list.add(field); } } } for(Object object : list) { Field field = (Field) object; System.out.println(field.getName()); } return list; } @SuppressWarnings({ "rawtypes", "unchecked" }) private static List<String> convertToRow( Object object, ExcelFileParameter config, List<Field> fieldList ) { List row = new ArrayList(); for (int i = 0; (fieldList != null) && (i < fieldList.size()); i++) { try { Field field = (Field)fieldList.get(i); field.setAccessible(true); Class fieldType = field.getType(); Object fieldValue = field.get(object); // System.out.println("Field Type : "+fieldType +"FieldValue : "+fieldValue); String value = convertFieldValueToString(fieldType, fieldValue, config); System.out.println("--------------------------------------------------"+value); row.add(value); } catch (Exception ex) { row.add("ERROR:" + ex.toString()); } } System.out.println("kkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkk"+row.size()); return row; } } 意思就是把对象链接写到excel文件中。 它正在工作，但需要编写超链接领域。
基本上这个代码会在Cell中生成一个HyperLink：
Workbook wb = new XSSFWorkbook(); CreationHelper createHelper = wb.getCreationHelper(); Sheet sheet = wb.createSheet("AHyperLink"); Cell cell = sheet.createRow(0).createCell(0); cell.setCellValue("Google"); Hyperlink link = createHelper.createHyperlink(Hyperlink.LINK_URL); link.setAddress("http://www.google.com/"); cell.setHyperlink(link);
一个简单的方法，以适应你的代码将匹配一个URL模式与在以下位置获得的字段值：
XSSFCell cell = excelRow.createCell(j); cell.setCellValue((String)row.get(j)); // match the result of row.get(j)
如果它是一个URL使用上面的代码来添加一个超链接，如果不只是使用你的代码
*编辑：
使用Link对象来识别链接可能会更好，您必须重新编写代码，以便在创build单元格时使用Link或String 。
我认为这个代码示例将帮助你。
if(row.get(j) instanceof Link){ Hyperlink link = createHelper.createHyperlink(Hyperlink.LINK_URL); link.setAddress("http://poi.apache.org/"); cell.setHyperlink(link); }else{ Your code.. }
将String类更改为Object类以避免错误。
参考链接：
http://www.docjar.com/html/api/org/apache/poi/xssf/usermodel/examples/HyperlinkExample.java.html