package com.fgkj.report;
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import java.io.FileInputStream;
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import java.io.FileNotFoundException;
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import java.io.FileOutputStream;
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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.lang.reflect.Field;
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import java.lang.reflect.InvocationTargetException;
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import java.lang.reflect.Method;
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import java.text.SimpleDateFormat;
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import java.util.Collection;
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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 java.util.regex.Matcher;
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import java.util.regex.Pattern;
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import org.apache.poi.hssf.usermodel.HSSFCell;
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import org.apache.poi.hssf.usermodel.HSSFCellStyle;
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import org.apache.poi.hssf.usermodel.HSSFClientAnchor;
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import org.apache.poi.hssf.usermodel.HSSFComment;
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import org.apache.poi.hssf.usermodel.HSSFFont;
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import org.apache.poi.hssf.usermodel.HSSFPatriarch;
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import org.apache.poi.hssf.usermodel.HSSFRichTextString;
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import org.apache.poi.hssf.usermodel.HSSFRow;
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import org.apache.poi.hssf.usermodel.HSSFSheet;
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import org.apache.poi.hssf.usermodel.HSSFWorkbook;
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import org.apache.poi.hssf.util.HSSFColor;
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import org.apache.poi.ss.formula.functions.T;
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import org.apache.struts2.ServletActionContext;
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import com.fgkj.dto.User;
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public class FileUtil {
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private static String filename="用户表.xls";
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public static InputStream ReaderFile(){
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InputStream is=null;
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is=ServletActionContext.getServletContext().getResourceAsStream("/files/"+filename);
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//System.out.println(is);
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return is;
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}
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public static void WriterFile(List<User> list){
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HSSFWorkbook workbook = new HSSFWorkbook();
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HSSFSheet sheet = workbook.createSheet("sheet1");
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HSSFRow row=sheet.createRow(0);
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HSSFCell cell=row.createCell(0);
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cell.setCellValue("员工编号");
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cell=row.createCell(1);
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cell.setCellValue("员工姓名");
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cell=row.createCell(2);
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cell.setCellValue("性别");
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cell=row.createCell(3);
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cell.setCellValue("身份证号");
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cell=row.createCell(4);
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cell.setCellValue("座机号码");
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cell=row.createCell(5);
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cell.setCellValue("邮箱");
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cell=row.createCell(6);
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cell.setCellValue("家庭住址");
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cell=row.createCell(7);
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cell.setCellValue("手机号码");
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for(int i=0;i<list.size();i++){
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User user=list.get(i);
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row=sheet.createRow(i+1);
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cell=row.createCell(0);
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cell.setCellValue(user.getUid());
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cell=row.createCell(1);
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cell.setCellValue(user.getUname());
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cell=row.createCell(2);
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cell.setCellValue(user.getSex());
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cell=row.createCell(3);
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cell.setCellValue(user.getIdnumber());
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cell=row.createCell(4);
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cell.setCellValue(user.getPhone());
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cell=row.createCell(5);
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cell.setCellValue(user.getEmail());
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cell=row.createCell(6);
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cell.setCellValue(user.getAddress());
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cell=row.createCell(7);
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cell.setCellValue(user.getMobile());
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}
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try {
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String root=ServletActionContext.getServletContext().getRealPath("/files/"+filename);
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OutputStream os=new FileOutputStream(root);
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workbook.write(os);
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os.close();
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} catch (FileNotFoundException e) {
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e.printStackTrace();
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} catch (IOException e) {
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e.printStackTrace();
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}
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}
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public void exportExcel(String title, String[] headers, Collection dataset, String fileName, String pattern, String type)
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throws FileNotFoundException, IOException {
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// 声明一个工作薄
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HSSFWorkbook workbook = null;
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if (type.equals("new")) {
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workbook = new HSSFWorkbook();
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} else if (type.equals("add")) {
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InputStream myxls = new FileInputStream(fileName);
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workbook = new HSSFWorkbook(myxls);
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myxls.close();
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}
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// 生成一个表格
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HSSFSheet sheet = workbook.createSheet(title);
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// 设置表格默认列宽度为15个字节
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sheet.setDefaultColumnWidth((short) 15);
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// 生成一个样式
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HSSFCellStyle style = workbook.createCellStyle();
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// 设置这些样式
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style.setFillForegroundColor(HSSFColor.SKY_BLUE.index);
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style.setFillPattern(HSSFCellStyle.SOLID_FOREGROUND);
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style.setBorderBottom(HSSFCellStyle.BORDER_THIN);
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style.setBorderLeft(HSSFCellStyle.BORDER_THIN);
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style.setBorderRight(HSSFCellStyle.BORDER_THIN);
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style.setBorderTop(HSSFCellStyle.BORDER_THIN);
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style.setAlignment(HSSFCellStyle.ALIGN_CENTER);
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// 生成一个字体
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HSSFFont font = workbook.createFont();
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font.setColor(HSSFColor.VIOLET.index);
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font.setFontHeightInPoints((short) 12);
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font.setBoldweight(HSSFFont.BOLDWEIGHT_BOLD);
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// 把字体应用到当前的样式
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style.setFont(font);
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// 生成并设置另一个样式
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HSSFCellStyle style2 = workbook.createCellStyle();
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style2.setFillForegroundColor(HSSFColor.LIGHT_YELLOW.index);
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style2.setFillPattern(HSSFCellStyle.SOLID_FOREGROUND);
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style2.setBorderBottom(HSSFCellStyle.BORDER_THIN);
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style2.setBorderLeft(HSSFCellStyle.BORDER_THIN);
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style2.setBorderRight(HSSFCellStyle.BORDER_THIN);
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style2.setBorderTop(HSSFCellStyle.BORDER_THIN);
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style2.setAlignment(HSSFCellStyle.ALIGN_CENTER);
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style2.setVerticalAlignment(HSSFCellStyle.VERTICAL_CENTER);
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// 生成另一个字体
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HSSFFont font2 = workbook.createFont();
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font2.setBoldweight(HSSFFont.BOLDWEIGHT_NORMAL);
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// 把字体应用到当前的样式
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style2.setFont(font2);
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// 声明一个画图的顶级管理器
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HSSFPatriarch patriarch = sheet.createDrawingPatriarch();
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// 定义注释的大小和位置,详见文档
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HSSFComment comment = patriarch.createComment(new HSSFClientAnchor(0, 0, 0, 0, (short) 4, 2, (short) 6, 5));
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// 设置注释内容
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comment.setString(new HSSFRichTextString("可以在POI中添加注释！"));
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// 设置注释作者，当鼠标移动到单元格上是可以在状态栏中看到该内容.
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comment.setAuthor("leno");
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// 产生表格标题行
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HSSFRow row = sheet.createRow(0);
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for (short i = 0; i < headers.length; i++) {
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HSSFCell cell = row.createCell(i);
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cell.setCellStyle(style);
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HSSFRichTextString text = new HSSFRichTextString(headers[i]);
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cell.setCellValue(text);
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}
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// 遍历集合数据，产生数据行
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Iterator it = dataset.iterator();
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int index = 0;
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while (it.hasNext()) {
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index++;
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row = sheet.createRow(index);
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T t = (T) it.next();
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// 利用反射，根据javabean属性的先后顺序，动态调用getXxx()方法得到属性值
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Field[] fields = t.getClass().getDeclaredFields();
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for (short i = 0; i < fields.length; i++) {
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HSSFCell cell = row.createCell(i);
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cell.setCellStyle(style2);
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Field field = fields[i];
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String fieldName = field.getName();
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String getMethodName = "get" + fieldName.substring(0, 1).toUpperCase() + fieldName.substring(1);
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try {
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Class tCls = t.getClass();
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Method getMethod = tCls.getMethod(getMethodName, new Class[] {});
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Object value = getMethod.invoke(t, new Object[] {});
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// 判断值的类型后进行强制类型转换
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String textValue = null;
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// if (value instanceof Integer) {
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// int intValue = (Integer) value;
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// cell.setCellValue(intValue);
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// } else if (value instanceof Float) {
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// float fValue = (Float) value;
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// textValue = new HSSFRichTextString(
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// String.valueOf(fValue));
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// cell.setCellValue(textValue);
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// } else if (value instanceof Double) {
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// double dValue = (Double) value;
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// textValue = new HSSFRichTextString(
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// String.valueOf(dValue));
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// cell.setCellValue(textValue);
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// } else if (value instanceof Long) {
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// long longValue = (Long) value;
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// cell.setCellValue(longValue);
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// }
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if (value instanceof Boolean) {
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boolean bValue = (Boolean) value;
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textValue = "男";
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if (!bValue) {
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textValue = "女";
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}
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} else if (value instanceof Date) {
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Date date = (Date) value;
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SimpleDateFormat sdf = new SimpleDateFormat(pattern);
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textValue = sdf.format(date);
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} else if (value instanceof byte[]) {
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// 有图片时，设置行高为60px;
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row.setHeightInPoints(60);
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// 设置图片所在列宽度为80px,注意这里单位的一个换算
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sheet.setColumnWidth(i, (short) (35.7 * 80));
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// sheet.autoSizeColumn(i);
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byte[] bsValue = (byte[]) value;
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HSSFClientAnchor anchor = new HSSFClientAnchor(0, 0, 1023, 255, (short) 6, index, (short) 6, index);
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anchor.setAnchorType(2);
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patriarch.createPicture(anchor, workbook.addPicture(bsValue, HSSFWorkbook.PICTURE_TYPE_JPEG));
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} else {
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// 其它数据类型都当作字符串简单处理
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textValue = value.toString();
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}
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// 如果不是图片数据，就利用正则表达式判断textValue是否全部由数字组成
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if (textValue != null) {
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Pattern p = Pattern.compile("^//d+(//.//d+)?{1}");
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Matcher matcher = p.matcher(textValue);
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if (matcher.matches()) {
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// 是数字当作double处理
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cell.setCellValue(Double.parseDouble(textValue));
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} else {
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HSSFRichTextString richString = new HSSFRichTextString(textValue);
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HSSFFont font3 = workbook.createFont();
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font3.setColor(HSSFColor.BLUE.index);
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richString.applyFont(font3);
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cell.setCellValue(richString);
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}
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}
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} catch (SecurityException e) {
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e.printStackTrace();
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} catch (NoSuchMethodException e) {
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e.printStackTrace();
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} catch (IllegalArgumentException e) {
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e.printStackTrace();
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} catch (IllegalAccessException e) {
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e.printStackTrace();
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} catch (InvocationTargetException e) {
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e.printStackTrace();
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} finally {
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// 清理资源
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}
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}
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}
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OutputStream out = null;
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try {
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out = new FileOutputStream(fileName);
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workbook.write(out);
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} catch (IOException e) {
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e.printStackTrace();
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}finally {
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if (out != null) {
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try {
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out.close();
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} catch (IOException e) {
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e.printStackTrace();
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}
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}
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}
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}
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}
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