excel利用反射动态导入到实体类
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package com.gomsws.util;import org.apache.commons.lang.StringUtils;import org.apache.poi.ss.usermodel.Cell;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 org.slf4j.Logger;import org.slf4j.LoggerFactory;import java.io.File;import java.io.FileInputStream;import java.lang.reflect.Field;import java.text.NumberFormat;import java.util.ArrayList;import java.util.List;/** * Package：com.gomsws.util * Author：tanyong * Date： 2016/12/1 * Desc：文件工具类 */public class FileUtil { private static Logger logger = LoggerFactory .getLogger(FileUtil.class); /** * 读取xml * @param classz * @param fileSrc * @return */ public static List readExcel(Class classz,String fileSrc){ List list = new ArrayList<>(); try { File file = new File(fileSrc); FileInputStream fileInputStream = new FileInputStream(file); XSSFWorkbook workbook = new XSSFWorkbook(fileInputStream); XSSFSheet sheet = workbook.getSheetAt(0); if(sheet.getLastRowNum() < 1){ return list; } XSSFRow headRow = sheet.getRow(0); for (int i = 1; i < sheet.getLastRowNum() + 1 ; i++){ XSSFRow row = sheet.getRow(i); Object t = classz.newInstance(); for(int j = 0; j < row.getLastCellNum(); j++){ XSSFCell cellHeadFiled = headRow.getCell(j); XSSFCell cellFiled = row.getCell(j); if(cellHeadFiled == null || cellFiled == null){ continue; } String cellFiledName = null; if(cellHeadFiled != null){ cellFiledName = cellHeadFiled.getRichStringCellValue().getString(); } cellFiled.setCellType(Cell.CELL_TYPE_STRING); String cellFiledValue = String.valueOf(cellFiled.getRichStringCellValue()); setFiledValue(t, cellFiledName, cellFiledValue); } list.add(t); } } catch (Exception e) { e.printStackTrace(); logger.error("解析excel异常"); } return list; } /** * 设置字段值 * @param object * @param excelFiledName * @param value */ private static void setFiledValue(Object object,String excelFiledName,String value){ Class classz = object.getClass(); Field[] fields = classz.getDeclaredFields(); for(Field field : fields){ String filedName = field.getName(); ExcelField excelField = field.getAnnotation(ExcelField.class); if(excelField != null){ filedName = excelField.fieldName(); } String orgFiledName = field.getType().getName(); String filedTypeName = orgFiledName.toUpperCase(); if(excelFiledName.equalsIgnoreCase(filedName)){ field.setAccessible(true); try { if(isNumeric(value)){ NumberFormat numberFormat = NumberFormat.getNumberInstance(); Number number = numberFormat.parse(value); if(filedTypeName.contains("INT")){ field.set(object, number.intValue()); }else if(filedTypeName.contains("DOUBLE")){ field.set(object, number.doubleValue()); }else if(filedTypeName.contains("FLOAT")){ field.set(object, number.floatValue()); }else if(filedTypeName.contains("LONG")){ field.set(object, number.longValue()); }else if(filedTypeName.contains("SHORT")){ field.set(object, number.shortValue()); } }else { if(filedTypeName.contains("BOOLEAN")){ field.set(object,Boolean.valueOf(value)); }else{ field.set(object,value); } } } catch (Exception e) { e.printStackTrace(); logger.error("暂不支持的数据类型["+orgFiledName+"]"); } break; } } } /** * 判断字符串是否为数字 * @param str * @return */ public static boolean isNumeric(String str){ if(StringUtils.isEmpty(str)){ return false; } for (int i = str.length();--i>=0;){ if (!Character.isDigit(str.charAt(i))){ return false; } } return true; } public static void main(String[] args) { String sre = "D://b.csv"; List<Person> persons = readExcel(Person.class, sre); for(Person person : persons){ System.out.println("姓名:"+person.getName()+"---年龄:"+person.getAge()+"---性别:"+person.getSex()); } }}package com.gomsws.util;import java.lang.annotation.*;/** * Package：com.gomsws.util * Author：tanyong * Date： 2016/12/2 * Desc：Excel字段名 */@Target(ElementType.FIELD)@Retention(RetentionPolicy.RUNTIME)@Documentedpublic @interface ExcelField { public String fieldName();}package com.gomsws.util;/** * Package：com.gomsws.util * Author：tanyong * Date： 2016/12/2 * Desc： */public class Person { @ExcelField(fieldName="名字") private String name; private double age; private String sex; public Person(){ } public String getName() { return name; } public void setName(String name) { this.name = name; } public double getAge() { return age; } public void setAge(double age) { this.age = age; } public String getSex() { return sex; } public void setSex(String sex) { this.sex = sex; }}
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