package com.ciic.component.excel;import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;/****/
@Retention(RetentionPolicy.RUNTIME)
@Target(ElementType.FIELD)
public @interface ExcelAnnotation {// excel导出时标题显示的名字，如果没有设置Annotation属性，将不会被导出和导入public String exportName();
}

package com.ciic.history.entity;import com.ciic.component.excel.ExcelAnnotation;
import com.ciic.history.common.ExportBase;//客户一揽子表
public class EsinnerLimeCustomerPreviewIndex extends ExportBase {@ExcelAnnotation(exportName = "客户名称")private String imscustomername;@ExcelAnnotation(exportName = "客户编号")private String imscustomercode;@ExcelAnnotation(exportName = "合同方式")private long imscontracttypea;@ExcelAnnotation(exportName = "月服务费")private String serviceimstotalfee;@ExcelAnnotation(exportName = "雇员人数")private long employeecount;@ExcelAnnotation(exportName = "应收金额")private String imstotalfee;@ExcelAnnotation(exportName = "实收金额")private String doneimstotalfee;@ExcelAnnotation(exportName = "应付金额")private String imssocialinsurancetfee;@ExcelAnnotation(exportName = "实付金额")private String dtlimssocialinsurancetfee;@ExcelAnnotation(exportName = "最后修改日期")private String modifieddate;@ExcelAnnotation(exportName = "客户简称")private String imscustomershort;@ExcelAnnotation(exportName = "合作方式")private long imscontracttypeb;@ExcelAnnotation(exportName = "客户经理")private String imscustomerclerk;@ExcelAnnotation(exportName = "未付款日期")private String unimspaynoticemonth;@ExcelAnnotation(exportName = "已交付日期")private String doneimspaynoticemonth;getter()setter()
}

public  void exportCustomerPreview(EsinnerLimeCustomerPreviewIndex customerPreview, HttpServletResponse response)throws  Exception{JsonEntity entity =XAServiceL.customerPreviewSearch(customerPreview,customerPreview.getPage(),customerPreview.getRows());ExcelExport excelExport=  new ExcelExport();response.reset();String fileName="";if(StringUtils.isBlank(customerPreview.getExcelName())){fileName="客户一揽子表/第"+customerPreview.getPage()+"页.xls";}else{fileName=customerPreview.getExcelName()+"/第"+customerPreview.getPage()+"页.xls";}response.setContentType("application/form-data;charset=UTF-8");response.addHeader("Content-Disposition", "attachment;filename=\""+ new String(fileName.getBytes("UTF-8"),"UTF-8") + "\"");System.out.println(Arrays.toString(entity.getRows().toArray()));List<EsinnerLimeCustomerPreviewIndex> outExcel=new ArrayList<EsinnerLimeCustomerPreviewIndex>();for(int i=0;i<entity.getRows().size();i++){outExcel.add(MapBeanConvert.toBean(EsinnerLimeCustomerPreviewIndex.class,(Map) entity.getRows().get(i)));}excelExport.exportExcel(customerPreview.getExcelName(),outExcel,response.getOutputStream());}

/*** 将一个 Map 对象转化为一个 JavaBean** @param clazz 要转化的类型* @param map   包含属性值的 map* @return 转化出来的 JavaBean 对象* @throws IntrospectionException    如果分析类属性失败* @throws IllegalAccessException    如果实例化 JavaBean 失败* @throws InstantiationException    如果实例化 JavaBean 失败* @throws InvocationTargetException 如果调用属性的 setter 方法失败*/@SuppressWarnings("rawtypes")public static <T> T toBean(Class<T> clazz, Map map) {T obj = null;String name = "";try {BeanInfo beanInfo = Introspector.getBeanInfo(clazz);obj = clazz.newInstance(); // 创建 JavaBean 对象// 给 JavaBean 对象的属性赋值PropertyDescriptor[] propertyDescriptors = beanInfo.getPropertyDescriptors();for (int i = 0; i < propertyDescriptors.length; i++) {PropertyDescriptor descriptor = propertyDescriptors[i];String propertyName = descriptor.getName();name = propertyName;if (map.containsKey(propertyName)) {// 下面一句可以 try 起来，这样当一个属性赋值失败的时候就不会影响其他属性赋值。Object value = map.get(propertyName);if ("".equals(value)) {value = null;}Object[] args = new Object[1];args[0] = value;try {descriptor.getWriteMethod().invoke(obj, args);} catch (InvocationTargetException e) {System.out.println("字段映射失败");}}}} catch (IllegalAccessException e) {System.out.println("实例化 JavaBean 失败");} catch (IntrospectionException e) {System.out.println("分析类属性失败");} catch (IllegalArgumentException e) {
//            e.printStackTrace();
            System.err.println(name);System.out.println("映射错误");} catch (InstantiationException e) {System.out.println("实例化 JavaBean 失败");}return (T) obj;}

package com.ciic.component.excel;import org.apache.poi.hssf.usermodel.*;import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.lang.reflect.Field;
import java.lang.reflect.Method;
import java.text.SimpleDateFormat;
import java.util.*;/****/
public class ExcelExport<T> {/*** @param title   标题* @param dataset 集合* @param out     输出流*/public void exportExcel(String title, Collection<T> dataset,OutputStream out) {// 声明一个工作薄try {//首先检查数据看是否是正确的Iterator<T> its = dataset.iterator();if (dataset == null || !its.hasNext() || title == null || out == null) {throw new Exception("传入的数据不对！");}T ts = (T) its.next();HSSFWorkbook workbook = new HSSFWorkbook();// 生成一个表格HSSFSheet sheet = workbook.createSheet(title);// 设置表格默认列宽度为15个字节sheet.setDefaultColumnWidth(15);// 生成一个样式HSSFCellStyle style = workbook.createCellStyle();// 设置标题样式
//            style = ExcelStyle.setHeadStyle(workbook, style);
//            // 生成并设置主体样式
//            HSSFCellStyle style2 = workbook.createCellStyle();
//            style2 = ExcelStyle.setbodyStyle(workbook, style2);// 得到所有字段
Field filed[] = ts.getClass().getDeclaredFields();// 标题List<String> exportfieldtile = new ArrayList<String>();// 导出的字段List<String> fiedName = new ArrayList<String>();// 遍历整个filedfor (int i = 0; i < filed.length; i++) {Field f = filed[i];ExcelAnnotation exa = f.getAnnotation(ExcelAnnotation.class);// 如果设置了annottionif (exa != null) {String exprot = exa.exportName();// 添加到标题
                    exportfieldtile.add(exprot);// 添加到需要导出的字段
                    fiedName.add(f.getName());}}// 产生表格标题行HSSFRow row = sheet.createRow(0);for (int i = 0; i < exportfieldtile.size(); i++) {HSSFCell cell = row.createCell(i);cell.setCellStyle(style);HSSFRichTextString text = new HSSFRichTextString(exportfieldtile.get(i));cell.setCellValue(text);}Iterator<T> it = dataset.iterator();int index = 0;// 循环整个集合while (it.hasNext()) {index++;row = sheet.createRow(index);T t = (T) it.next();for (int k = 0; k < fiedName.size(); k++) {HSSFCell cell = row.createCell(k);String fieldname = fiedName.get(k);String getMethodName = "get"+ fieldname.substring(0, 1).toUpperCase()+ fieldname.substring(1);Class tCls = t.getClass();Method getMethod = tCls.getMethod(getMethodName,new Class[]{});Object value = getMethod.invoke(t, new Object[]{});String textValue = getValue(value);HSSFRichTextString richString = new HSSFRichTextString(textValue);cell.setCellValue(richString);}}workbook.write(out);} catch (Exception e) {e.printStackTrace();}}/*** @param title   标题* @param dataset 集合*/public File exportExcel(String title, Collection<T> dataset) {OutputStream out = null;File file = null;// 声明一个工作薄try {//首先检查数据看是否是正确的Iterator<T> its = dataset.iterator();if (dataset == null || !its.hasNext() || title == null) {throw new Exception("传入的数据不对！");}T ts = (T) its.next();HSSFWorkbook workbook = new HSSFWorkbook();// 生成一个表格HSSFSheet sheet = workbook.createSheet(title);// 设置表格默认列宽度为15个字节sheet.setDefaultColumnWidth(15);// 生成一个样式HSSFCellStyle style = workbook.createCellStyle();// 设置标题样式
//            style = ExcelStyle.setHeadStyle(workbook, style);
//            // 生成并设置主体样式
//            HSSFCellStyle style2 = workbook.createCellStyle();
//            style2 = ExcelStyle.setbodyStyle(workbook, style2);// 得到所有字段
Field filed[] = ts.getClass().getDeclaredFields();// 标题List<String> exportfieldtile = new ArrayList<String>();// 导出的字段List<String> fiedName = new ArrayList<String>();// 遍历整个filedfor (int i = 0; i < filed.length; i++) {Field f = filed[i];ExcelAnnotation exa = f.getAnnotation(ExcelAnnotation.class);// 如果设置了annottionif (exa != null) {String exprot = exa.exportName();// 添加到标题
                    exportfieldtile.add(exprot);// 添加到需要导出的字段
                    fiedName.add(f.getName());}}// 产生表格标题行HSSFRow row = sheet.createRow(0);for (int i = 0; i < exportfieldtile.size(); i++) {HSSFCell cell = row.createCell(i);cell.setCellStyle(style);HSSFRichTextString text = new HSSFRichTextString(exportfieldtile.get(i));cell.setCellValue(text);}Iterator<T> it = dataset.iterator();int index = 0;// 循环整个集合while (it.hasNext()) {index++;row = sheet.createRow(index);T t = (T) it.next();for (int k = 0; k < fiedName.size(); k++) {HSSFCell cell = row.createCell(k);String fieldname = fiedName.get(k);String getMethodName = "get"+ fieldname.substring(0, 1).toUpperCase()+ fieldname.substring(1);Class tCls = t.getClass();Method getMethod = tCls.getMethod(getMethodName,new Class[]{});Object value = getMethod.invoke(t, new Object[]{});String textValue = getValue(value);HSSFRichTextString richString = new HSSFRichTextString(textValue);cell.setCellValue(richString);}}file = new File("/tmp/testOne.xls");out = new FileOutputStream(file);workbook.write(out);} catch (Exception e) {e.printStackTrace();} finally {try {if (out != null) {out.close();}} catch (IOException e) {e.printStackTrace();}}return file;}private String getValue(Object value) {String textValue = "";if (value == null)return textValue;if (value instanceof Boolean) {boolean bValue = (Boolean) value;textValue = "是";if (!bValue) {textValue = "否";}} else if (value instanceof Date) {Date date = (Date) value;SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");textValue = sdf.format(date);} elsetextValue = value.toString();return textValue;}}