java 将ppt第一页转成图片 java 导出ppt

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mob64ca14163a4f 2024-08-19 12:50:39

文章标签 java 将ppt第一页转成图片 java 重构 ppt下载数据 java List 文章分类 Java 后端开发

public class ExportExcel{public void exportExcel(Collectiondataset, OutputStream out) {
exportExcel("测试POI导出EXCEL文档", null, dataset, out, "yyyy-MM-dd");
}public void exportExcel(String[] headers, Collectiondataset, OutputStream out) {
exportExcel("测试POI导出EXCEL文档", headers, dataset, out, "yyyy-MM-dd");
}public void exportExcel(String[] headers, Collectiondataset, OutputStream out, String pattern) {
exportExcel("测试POI导出EXCEL文档", headers, dataset, out, pattern);
}/*** 这是一个通用的方法，利用了JAVA的反射机制，可以将放置在JAVA集合中并且符号一定条件的数据以EXCEL 的形式输出到指定IO设备上
*
*@paramtitle
* 表格标题名
*@paramheaders
* 表格属性列名数组
*@paramdataset
* 需要显示的数据集合,集合中一定要放置符合javabean风格的类的对象。此方法支持的
* javabean属性的数据类型有基本数据类型及String,Date,byte[](图片数据)
*@paramout
* 与输出设备关联的流对象，可以将EXCEL文档导出到本地文件或者网络中
*@parampattern
* 如果有时间数据，设定输出格式。默认为"yyy-MM-dd"*/@SuppressWarnings("unchecked")public void exportExcel(String title, String[] headers, Collectiondataset, OutputStream out, String pattern) {//声明一个工作薄
HSSFWorkbook workbook = newHSSFWorkbook();//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((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= newHSSFRichTextString(headers[i]);
cell.setCellValue(text);
}//遍历集合数据，产生数据行
Iterator 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);try{
Class tCls=t.getClass();
Method getMethod= tCls.getMethod(getMethodName, newClass[] {});
Object value= getMethod.invoke(t, newObject[] {});//判断值的类型后进行强制类型转换
String textValue = null;//if (value instanceof Integer) {//int intValue = (Integer) value;//cell.setCellValue(intValue);//} else if (value instanceof Float) {//float fValue = (Float) value;//textValue = new HSSFRichTextString(//String.valueOf(fValue));//cell.setCellValue(textValue);//} else if (value instanceof Double) {//double dValue = (Double) value;//textValue = new HSSFRichTextString(//String.valueOf(dValue));//cell.setCellValue(textValue);//} else if (value instanceof Long) {//long longValue = (Long) value;//cell.setCellValue(longValue);//}
if (value instanceofBoolean) {boolean bValue =(Boolean) value;
textValue= "男";if (!bValue) {
textValue= "女";
}
}else if (value instanceofDate) {
Date date=(Date) value;
SimpleDateFormat sdf= newSimpleDateFormat(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= newHSSFRichTextString(textValue);
HSSFFont font3=workbook.createFont();
font3.setColor(HSSFColor.BLUE.index);
richString.applyFont(font3);
cell.setCellValue(richString);
}
}
}catch(SecurityException e) {
e.printStackTrace();
}catch(NoSuchMethodException e) {
e.printStackTrace();
}catch(IllegalArgumentException e) {
e.printStackTrace();
}catch(IllegalAccessException e) {
e.printStackTrace();
}catch(InvocationTargetException e) {
e.printStackTrace();
}finally{//清理资源
}
}
}try{
workbook.write(out);
}catch(IOException e) {
e.printStackTrace();
}
}public static voidmain(String[] args) {//测试学生
ExportExcel ex = new ExportExcel();
String[] headers= { "学号", "姓名", "年龄", "性别", "出生日期"};
List dataset = new ArrayList();
dataset.add(new Student(10000001, "张三", 20, true, newDate()));
dataset.add(new Student(20000002, "李四", 24, false, newDate()));
dataset.add(new Student(30000003, "王五", 22, true, newDate()));//测试图书
ExportExcel ex2 = new ExportExcel();
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 dataset2 = new ArrayList();try{
BufferedInputStream bis= new BufferedInputStream(new FileInputStream("D://USER//Desktop//1.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();
out2.close();
JOptionPane.showMessageDialog(null, "导出成功!");
System.out.println("excel导出成功！");
}catch(FileNotFoundException e) {
e.printStackTrace();
}catch(IOException e) {
e.printStackTrace();
}
}
}

public class ExportExcel{public void exportExcel(Collectiondataset, OutputStream out) {
exportExcel("测试POI导出EXCEL文档", null, dataset, out, "yyyy-MM-dd");
}public void exportExcel(String[] headers, Collectiondataset, OutputStream out) {
exportExcel("测试POI导出EXCEL文档", headers, dataset, out, "yyyy-MM-dd");
}public void exportExcel(String[] headers, Collectiondataset, OutputStream out, String pattern) {
exportExcel("测试POI导出EXCEL文档", headers, dataset, out, pattern);
}/*** 这是一个通用的方法，利用了JAVA的反射机制，可以将放置在JAVA集合中并且符号一定条件的数据以EXCEL 的形式输出到指定IO设备上
*
*@paramtitle
* 表格标题名
*@paramheaders
* 表格属性列名数组
*@paramdataset
* 需要显示的数据集合,集合中一定要放置符合javabean风格的类的对象。此方法支持的
* javabean属性的数据类型有基本数据类型及String,Date,byte[](图片数据)
*@paramout
* 与输出设备关联的流对象，可以将EXCEL文档导出到本地文件或者网络中
*@parampattern
* 如果有时间数据，设定输出格式。默认为"yyy-MM-dd"*/@SuppressWarnings("unchecked")public void exportExcel(String title, String[] headers, Collectiondataset, OutputStream out, String pattern) {//声明一个工作薄
HSSFWorkbook workbook = newHSSFWorkbook();//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((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= newHSSFRichTextString(headers[i]);
cell.setCellValue(text);
}//遍历集合数据，产生数据行
Iterator 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);try{
Class tCls=t.getClass();
Method getMethod= tCls.getMethod(getMethodName, newClass[] {});
Object value= getMethod.invoke(t, newObject[] {});//判断值的类型后进行强制类型转换
String textValue = null;//if (value instanceof Integer) {//int intValue = (Integer) value;//cell.setCellValue(intValue);//} else if (value instanceof Float) {//float fValue = (Float) value;//textValue = new HSSFRichTextString(//String.valueOf(fValue));//cell.setCellValue(textValue);//} else if (value instanceof Double) {//double dValue = (Double) value;//textValue = new HSSFRichTextString(//String.valueOf(dValue));//cell.setCellValue(textValue);//} else if (value instanceof Long) {//long longValue = (Long) value;//cell.setCellValue(longValue);//}
if (value instanceofBoolean) {boolean bValue =(Boolean) value;
textValue= "男";if (!bValue) {
textValue= "女";
}
}else if (value instanceofDate) {
Date date=(Date) value;
SimpleDateFormat sdf= newSimpleDateFormat(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= newHSSFRichTextString(textValue);
HSSFFont font3=workbook.createFont();
font3.setColor(HSSFColor.BLUE.index);
richString.applyFont(font3);
cell.setCellValue(richString);
}
}
}catch(SecurityException e) {
e.printStackTrace();
}catch(NoSuchMethodException e) {
e.printStackTrace();
}catch(IllegalArgumentException e) {
e.printStackTrace();
}catch(IllegalAccessException e) {
e.printStackTrace();
}catch(InvocationTargetException e) {
e.printStackTrace();
}finally{//清理资源
}
}
}try{
workbook.write(out);
}catch(IOException e) {
e.printStackTrace();
}
}public static voidmain(String[] args) {//测试学生
ExportExcel ex = new ExportExcel();
String[] headers= { "学号", "姓名", "年龄", "性别", "出生日期"};
List dataset = new ArrayList();
dataset.add(new Student(10000001, "张三", 20, true, newDate()));
dataset.add(new Student(20000002, "李四", 24, false, newDate()));
dataset.add(new Student(30000003, "王五", 22, true, newDate()));//测试图书
ExportExcel ex2 = new ExportExcel();
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 dataset2 = new ArrayList();try{
BufferedInputStream bis= new BufferedInputStream(new FileInputStream("D://USER//Desktop//1.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();
out2.close();
JOptionPane.showMessageDialog(null, "导出成功!");
System.out.println("excel导出成功！");
}catch(FileNotFoundException e) {
e.printStackTrace();
}catch(IOException e) {
e.printStackTrace();
}
}
}

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