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zhchyun2008:
鱼崽崽 写道大家可以看看这个,里面有真正的实例:http:// ...
springmvc+MyBatis简单CRUD -
鱼崽崽:
大家可以看看这个,里面有真正的实例:http://43.249 ...
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w-mamba:
适合初学者学习,蛮好…
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我笑了............................ ...
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大哥。能不能加个项目结构图。再加个运行结果图,你这样写我都不知 ...
springmvc+MyBatis简单CRUD
转自:http://blog.csdn.net/lenotang/article/details/2823230
现在主流的操作Excel文件的开源工具有很多,用得比较多的就是Apache的POI及JExcelAPI。这里我们用Apache POI!我们先去Apache的大本营下载POI的jar包:http://poi.apache.org/ ,我这里使用的是3.0.2版本。
实体类Book:
实体类Student:
工具类ExportExcel:
现在主流的操作Excel文件的开源工具有很多,用得比较多的就是Apache的POI及JExcelAPI。这里我们用Apache POI!我们先去Apache的大本营下载POI的jar包:http://poi.apache.org/ ,我这里使用的是3.0.2版本。
实体类Book:
package com.export.util; public class Book { private int bookId; private String name; private String author; private float price; private String isbn; private String pubName; private byte[] preface; public Book() { super(); } public Book(int bookId, String name, String author, float price, String isbn, String pubName, byte[] preface) { this.bookId = bookId; this.author = author; this.name = name; this.price = price; this.isbn = isbn; this.pubName = pubName; this.preface = preface; } public int getBookId() { return bookId; } public void setBookId(int bookId) { this.bookId = bookId; } public String getName() { return name; } public void setName(String name) { this.name = name; } public String getAuthor() { return author; } public void setAuthor(String author) { this.author = author; } public float getPrice() { return price; } public void setPrice(float price) { this.price = price; } public String getIsbn() { return isbn; } public void setIsbn(String isbn) { this.isbn = isbn; } public String getPubName() { return pubName; } public void setPubName(String pubName) { this.pubName = pubName; } public byte[] getPreface() { return preface; } public void setPreface(byte[] preface) { this.preface = preface; } }
实体类Student:
package com.export.util; import java.util.Date; public class Student { private long id; private String name; private int age; private boolean sex; private Date birthday; public Student() { // TODO Auto-generated constructor stub } public Student(long id, String name, int age, boolean sex, Date birthday) { this.id = id; this.name = name; this.age = age; this.sex = sex; this.birthday = birthday; } public long getId() { return id; } public void setId(long id) { this.id = id; } public String getName() { return name; } public void setName(String name) { this.name = name; } public int getAge() { return age; } public void setAge(int age) { this.age = age; } public boolean getSex() { return sex; } public void setSex(boolean sex) { this.sex = sex; } public Date getBirthday() { return birthday; } public void setBirthday(Date birthday) { this.birthday = birthday; } }
工具类ExportExcel:
package com.export.util; import java.io.BufferedInputStream; import java.io.File; import java.io.FileInputStream; import java.io.FileNotFoundException; import java.io.FileOutputStream; import java.io.IOException; import java.io.OutputStream; import java.lang.reflect.Field; import java.lang.reflect.InvocationTargetException; import java.lang.reflect.Method; import java.text.SimpleDateFormat; import java.util.ArrayList; import java.util.Collection; import java.util.Date; import java.util.Iterator; import java.util.List; import java.util.regex.Matcher; import java.util.regex.Pattern; import javax.swing.JOptionPane; import org.apache.poi.hssf.usermodel.HSSFCell; import org.apache.poi.hssf.usermodel.HSSFCellStyle; import org.apache.poi.hssf.usermodel.HSSFClientAnchor; import org.apache.poi.hssf.usermodel.HSSFComment; import org.apache.poi.hssf.usermodel.HSSFFont; import org.apache.poi.hssf.usermodel.HSSFPatriarch; import org.apache.poi.hssf.usermodel.HSSFRichTextString; import org.apache.poi.hssf.usermodel.HSSFRow; import org.apache.poi.hssf.usermodel.HSSFSheet; import org.apache.poi.hssf.usermodel.HSSFWorkbook; import org.apache.poi.hssf.util.HSSFColor; public class ExportExcel<T> { /** * 导出excel * @param dataset 数据集合 * @param out 输出文档 */ public void exportExcel(Collection<T> dataset, OutputStream out) { exportExcel("测试POI导出Excel文档", null, dataset, out, "yyyy-MM-dd"); } /** * 导出excel * @param headers 字段头 * @param dataset * @param out */ public void exportExcel(String[] headers, Collection<T> dataset, OutputStream out) { exportExcel("测试POI导出EXCEL文档", headers, dataset, out, "yyyy-MM-dd"); } /** * 导出excel * @param headers * @param dataset * @param out * @param pattern */ public void exportExcel(String[] headers, Collection<T> dataset, OutputStream out, String pattern) { exportExcel("测试POI导出EXCEL文档", headers, dataset, out, pattern); } /** * 导出excel通用方法 * @param title 表格标题 * @param headers 表格属性列 * @param dataset 需要显示的数据集合 * @param out 与输出设备关联的数据对象 * @param pattern 如果有时间数据,设定输出格式。默认为"yyyy-MM-dd" */ @SuppressWarnings( {"deprecation", "unchecked"}) public void exportExcel(String title, String[] headers, Collection<T> dataset, OutputStream out, String pattern) { // 声明一个工作薄 HSSFWorkbook workbook = new HSSFWorkbook(); // 生成一个表格 HSSFSheet sheet = workbook.createSheet(title); // 设置表格默认列宽为15个字节 sheet.setDefaultColumnWidth((short)15); // 生成一个样式 HSSFCellStyle style = workbook.createCellStyle(); // 设置这些样式 style.setFillForegroundColor(HSSFColor.SKY_BLUE.index); style.setFillPattern(HSSFCellStyle.SOLID_FOREGROUND); style.setBorderBottom(HSSFCellStyle.BORDER_THIN); style.setBorderLeft(HSSFCellStyle.BORDER_THIN); style.setBorderRight(HSSFCellStyle.BORDER_THIN); style.setBorderTop(HSSFCellStyle.BORDER_THIN); style.setAlignment(HSSFCellStyle.ALIGN_CENTER); // 生成一个字体 HSSFFont font = workbook.createFont(); font.setColor(HSSFColor.VIOLET.index); font.setFontHeightInPoints((short)12); font.setBoldweight(HSSFFont.BOLDWEIGHT_BOLD); // 把字体应用到当前的样式 style.setFont(font); // 生成并设置另一个样式 HSSFCellStyle style2 = workbook.createCellStyle(); style2.setFillForegroundColor(HSSFColor.LIGHT_YELLOW.index); style2.setFillPattern(HSSFCellStyle.SOLID_FOREGROUND); style2.setBorderBottom(HSSFCellStyle.BORDER_THIN); style2.setBorderLeft(HSSFCellStyle.BORDER_THIN); style2.setBorderRight(HSSFCellStyle.BORDER_THIN); style2.setBorderTop(HSSFCellStyle.BORDER_THIN); style2.setAlignment(HSSFCellStyle.ALIGN_CENTER); style2.setVerticalAlignment(HSSFCellStyle.VERTICAL_CENTER); // 生成另一个字体 HSSFFont font2 = workbook.createFont(); font2.setBoldweight(HSSFFont.BOLDWEIGHT_NORMAL); // 把字体应用到当前的样式 style2.setFont(font2); // 声明一个画图的顶级管理器 HSSFPatriarch patriarch = sheet.createDrawingPatriarch(); /* // 定义注释的大小和位置,详见文档 HSSFComment comment = patriarch.createComment(new HSSFClientAnchor(0, 0, 0, 0, (short)4, 2, (short)6, 5)); // 设置注释内容 comment.setString(new HSSFRichTextString("可以在POI中添加注释!")); // 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. comment.setAuthor("leno");*/ // 产生表格标题行 HSSFRow row = sheet.createRow(0); for (short i = 0; i < headers.length; i++) { HSSFCell cell = row.createCell(i); cell.setCellStyle(style); HSSFRichTextString text = new HSSFRichTextString(headers[i]); cell.setCellValue(text); } // 遍历集合数据,产生数据行 Iterator<T> it = dataset.iterator(); int index = 0; while (it.hasNext()) { index++; row = sheet.createRow(index); T t = (T)it.next(); //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 Field[] fields = t.getClass().getDeclaredFields(); for (short i = 0; i < fields.length; i++) { HSSFCell cell = row.createCell(i); cell.setCellStyle(style2); Field field = fields[i]; String fieldName = field.getName(); String getMethodName = "get" + fieldName.substring(0, 1).toUpperCase() + fieldName.substring(1); Class tCls = t.getClass(); try { Method getMethod = tCls.getMethod(getMethodName, new Class[] {}); Object value = getMethod.invoke(t, new Object[] {}); //判断值的类型后进行强制转换 String textValue = null; if (value instanceof Integer) { int intValue = (Integer)value; cell.setCellValue(intValue); } else if (value instanceof Float) { float fValue = (Float)value; textValue = String.valueOf(fValue); cell.setCellValue(textValue); } else if (value instanceof Double) { double dValue = (Double)value; textValue = String.valueOf(dValue); cell.setCellValue(textValue); } else if (value instanceof Long) { long longValue = (Long)value; cell.setCellValue(longValue); } if (value instanceof Boolean) { boolean bValue = (Boolean)value; textValue = "男"; if (!bValue) { textValue = "女"; } } else if (value instanceof Date) { Date date = (Date)value; SimpleDateFormat sdf = new SimpleDateFormat(pattern); textValue = sdf.format(date); } else if (value instanceof byte[]) { // 有图片时,设置行高为60px; row.setHeightInPoints(60); // 设置图片所在列宽度为80px,注意这里单位的一个换算 sheet.setColumnWidth(i, (short)(35.7 * 80)); // sheet.autoSizeColumn(i); byte[] bsValue = (byte[])value; HSSFClientAnchor anchor = new HSSFClientAnchor(0, 0, 1023, 255, (short)6, index, (short)6, index); anchor.setAnchorType(2); patriarch.createPicture(anchor, workbook.addPicture(bsValue, HSSFWorkbook.PICTURE_TYPE_JPEG)); } else { //其它数据类型都当作字符串简单处理 textValue = value.toString(); } //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 if (textValue != null) { Pattern p = Pattern.compile("^//d+(//.//d+)?$"); Matcher matcher = p.matcher(textValue); if (matcher.matches()) { //是数字当作double处理 cell.setCellValue(Double.parseDouble(textValue)); } else { HSSFRichTextString richString = new HSSFRichTextString( textValue); HSSFFont font3 = workbook.createFont(); font3.setColor(HSSFColor.BLUE.index); richString.applyFont(font3); cell.setCellValue(richString); } } } catch (SecurityException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (NoSuchMethodException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (IllegalArgumentException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (IllegalAccessException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (InvocationTargetException e) { // TODO Auto-generated catch block e.printStackTrace(); } finally { //清理资源 } } } try { workbook.write(out); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } } //测试 public static void main(String[] args) { // 测试学生 ExportExcel<Student> ex = new ExportExcel<Student>(); String[] headers = {"学号", "姓名", "年龄", "性别", "出生日期"}; List<Student> dataset = new ArrayList<Student>(); dataset.add(new Student(10000001, "张三", 20, true, new Date())); dataset.add(new Student(20000002, "李四", 24, false, new Date())); dataset.add(new Student(30000003, "王五", 22, true, new Date())); // 测试图书 ExportExcel<Book> ex2 = new ExportExcel<Book>(); String[] headers2 = {"图书编号", "图书名称", "图书作者", "图书价格", "图书ISBN", "图书出版社", "封面图片"}; List<Book> dataset2 = new ArrayList<Book>(); try { BufferedInputStream bis = new BufferedInputStream( new FileInputStream( new File( "C:\\Documents and Settings\\Administrator\\桌面\\book.jpg"))); byte[] buf = new byte[bis.available()]; while ((bis.read(buf)) != -1) { // } dataset2.add(new Book(1, "jsp", "leno", 300.33f, "1234567", "清华出版社", buf)); dataset2.add(new Book(2, "java编程思想", "brucl", 300.33f, "1234567", "阳光出版社", buf)); dataset2.add(new Book(3, "DOM艺术", "lenotang", 300.33f, "1234567", "清华出版社", buf)); dataset2.add(new Book(4, "c++经典", "leno", 400.33f, "1234567", "清华出版社", buf)); dataset2.add(new Book(5, "c#入门", "leno", 300.33f, "1234567", "汤春秀出版社", buf)); OutputStream out = new FileOutputStream("E://a.xls"); OutputStream out2 = new FileOutputStream("E://b.xls"); ex.exportExcel(headers, dataset, out); ex2.exportExcel(headers2, dataset2, out2); out.close(); JOptionPane.showMessageDialog(null, "导出成功!"); System.out.println("excel导出成功!"); } catch (FileNotFoundException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } } }
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spring execution 表达式
2012-08-29 15:18 898Spring AOP 用户可能会经常使用 executio ... -
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2012-08-16 10:30 987下载地址:http://download.csdn.net/d ... -
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2012-08-14 09:38 29629实体类:Student.java package demo.e ... -
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2012-08-03 17:35 1265MyBatis学习 之 一、MyBatis简介与 ... -
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