陕西做网站公司/什么关键词能搜到资源
最近把数据导出为Excel文件并保存到本地，由于有很多功能都会用到导出功能，所以就简单封装了一个导出框架，分享给大家。
导出框架思路：
1.一个Map对应一条数据记录
2.多条数据存放在List对象中
3.为了简化导出框架，该框架是基于HttpServlet+Web项目实现，如果在SpringBoot或者SpringMVC框架中使用，就把Servlet中代码写到Service业务逻辑层即可。
基于MyEclipse完整项目的源码下载，点击下载。
下面直接贴代码：
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {List<PageData> list=new ArrayList<PageData>();
PageData pd1=new PageData();
pd1.put("name", "张三");
pd1.put("mobile", "18311234567");
list.add(pd1);
list.add(pd1);
HSSFWorkbook wb=null;
try {
wb = this.generateWorkbook(list);
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}response.setHeader("Content-Disposition", "attachment;filename="
+ new String("演示.xls".getBytes("gb2312"), "iso8859-1"));// 指定下载的文件名
response.setContentType("application/vnd.ms-excel");
OutputStream out = new BufferedOutputStream(response.getOutputStream());
wb.write(out);
out.flush();
out.close();
}private HSSFWorkbook generateWorkbook(List<PageData> orderList)
throws Exception {
// 声明一个工作薄
HSSFWorkbook wb = new HSSFWorkbook();
// 声明一个单子并命名
HSSFSheet sheet = wb.createSheet("工单信息");// 冻结标题(width * height)
// sheet.createFreezePane(15, 1);
// 给单子名称一个长度
sheet.setDefaultColumnWidth((short) 15);
// 生成一个样式
HSSFCellStyle style = wb.createCellStyle();
// 设置表头颜色
HSSFFont font = wb.createFont();
font.setColor(HSSFColor.BLUE.index);
style.setFont(font);
// 水平布局 居中
style.setAlignment(HSSFCellStyle.ALIGN_CENTER);
// 上下居中
style.setVerticalAlignment(HSSFCellStyle.VERTICAL_CENTER);
// 不锁定
style.setLocked(false);
// 设置边框
style.setBorderBottom(HSSFCellStyle.BORDER_THIN); // 下边框
style.setBorderLeft(HSSFCellStyle.BORDER_THIN);// 左边框
style.setBorderTop(HSSFCellStyle.BORDER_THIN);// 上边框
style.setBorderRight(HSSFCellStyle.BORDER_THIN);// 右边框
// 创建第一行（也可以称为表头）
HSSFRow row = sheet.createRow(0);
// 样式字体居中
style.setAlignment(HSSFCellStyle.ALIGN_CENTER);
this.createExcelTitle(row, style);
int k = 0;
int orderSize = orderList == null ? 0 : orderList.size();
for (int i = 0; i < orderSize; i++) {
k++;
row = sheet.createRow(k);
this.addExcelContent(row, orderList.get(i));
// row.createCell((short) 1).setCellValue(new
// HSSFRichTextString(StringUtil.isNullObject(orderList.get(i).get("orderId")+"")));
}
return wb;
}/**
*
* 功能描述：创建工单title.
*
*/
private void createExcelTitle(HSSFRow row, HSSFCellStyle style) {
String[] titles = { "姓名", "手机号" };
for (int i = 0; i < titles.length; i++) {
String title = titles[i];
// 给表头第一行一次创建单元格
HSSFCell cell = row.createCell((short) i);
cell.setCellValue(title);
cell.setCellStyle(style);
}
}/**
*
* 功能描述：增加一条数据记录.
*
*/
private void addExcelContent(HSSFRow row, PageData pageData) {
String[] fields = { "name", "mobile" };
for (int i = 0; i < fields.length; i++) {
String field = fields[i];
row.createCell((short) i).setCellValue(
new HSSFRichTextString(pageData
.get(field) + ""));
}
}
PageData.java
public class PageData extends HashMap implements Map {
private static final long serialVersionUID = 1L;
Map map = null;
HttpServletRequest request;public PageData(HttpServletRequest request) {
this.request = request;
Map properties = request.getParameterMap();
Map returnMap = new HashMap();
Iterator entries = properties.entrySet().iterator();
Map.Entry entry;
String name = "";
String value = "";
while (entries.hasNext()) {
entry = (Map.Entry) entries.next();
name = (String) entry.getKey();
Object valueObj = entry.getValue();
if (null == valueObj) {
value = "";
} else if (valueObj instanceof String[]) {
String[] values = (String[]) valueObj;
for (int i = 0; i < values.length; i++) {
value = values[i] + ",";
}
value = value.substring(0, value.length() - 1);
} else {
value = valueObj.toString();
}
returnMap.put(name, value);
}
map = returnMap;
}public PageData() {
map = new HashMap();
}@Override
public Object get(Object key) {
Object obj = null;
if (map.get(key) instanceof Object[]) {
Object[] arr = (Object[]) map.get(key);
obj = request == null ? arr
: (request.getParameter((String) key) == null ? arr
: arr[0]);
}else if ((map.get(key) instanceof Integer)||(map.get(key) instanceof Long)) {
obj=String.valueOf(map.get(key));
}else {
obj = map.get(key);
}
return obj;
}public String getString(Object key) {
String value=(String) get(key);
if (null != value && !"".equals(value)) {
value=value.trim();
}
return value;
}@SuppressWarnings("unchecked")
@Override
public Object put(Object key, Object value) {
return map.put(key, value);
}@Override
public Object remove(Object key) {
return map.remove(key);
}public void clear() {
map.clear();
}public boolean containsKey(Object key) {
// TODO Auto-generated method stub
return map.containsKey(key);
}public boolean containsValue(Object value) {
// TODO Auto-generated method stub
return map.containsValue(value);
}public Set entrySet() {
// TODO Auto-generated method stub
return map.entrySet();
}public boolean isEmpty() {
// TODO Auto-generated method stub
return map.isEmpty();
}public Set keySet() {
// TODO Auto-generated method stub
return map.keySet();
}@SuppressWarnings("unchecked")
public void putAll(Map t) {
// TODO Auto-generated method stub
map.putAll(t);
}public int size() {
// TODO Auto-generated method stub
return map.size();
}public Collection values() {
// TODO Auto-generated method stub
return map.values();
}}
基于MyEclipse完整项目的源码下载，点击下载。