需要包:
poi-3.9-20121203.jar
poi-ooxml-3.9-20121203.jar
poi-ooxml-schemas-3.9-20121203.jar
xbean.jar
代码
1 package com.keertech.miis.news.action;
2
3 import java.io.File;
4 import java.io.FileInputStream;
5 import java.io.InputStream;
6 import java.math.BigDecimal;
7 import java.util.ArrayList;
8 import java.util.List;
9
10 import org.apache.commons.lang.StringUtils;
11 import org.apache.poi.hssf.usermodel.HSSFWorkbook;
12 import org.apache.poi.ss.usermodel.Cell;
13 import org.apache.poi.ss.usermodel.CellValue;
14 import org.apache.poi.ss.usermodel.DateUtil;
15 import org.apache.poi.ss.usermodel.FormulaEvaluator;
16 import org.apache.poi.ss.usermodel.Row;
17 import org.apache.poi.ss.usermodel.Sheet;
18 import org.apache.poi.ss.usermodel.Workbook;
19 import org.apache.poi.xssf.usermodel.XSSFWorkbook;
20 import org.apache.struts2.ServletActionContext;
21
22 import com.keertech.base.action.JSONAction;
23 import com.keertech.miis.news.bean.News;
24 import com.keertech.miis.news.bean.NewsType;
25
26 @SuppressWarnings("serial")
27 public class MainPageAction extends JSONAction{
28
29 private final String directoryPath = ServletActionContext.getServletContext().getInitParameter("filedirectory")+"/mainPageFile";
30
31 public String turnToMainPage() throws Exception{
32
33 // List<NewsType> newsTypes = dao.findAll(NewsType.class, " order by createddate desc Fetch First 5 Rows Only");
34 List<NewsType> newsTypes = (List<NewsType>)dao.findListBySql("select * from miis_news_type order by createddate desc Fetch First 5 Rows Only",null,null);
35
36 String filterString = "";
37 List<News> news = dao.findAll(News.class, filterString);
38
39 List<List<String>> excelInfo = readExcel();
40 System.out.println(excelInfo.size());
41
42 request.setAttribute("newsTypes", newsTypes);
43 request.setAttribute("newses", news);
44 return SUCCESS;
45 }
46
47 private List<List<String>> readExcel() throws Exception{
48 List<List<String>> result = new ArrayList<List<String>>();
49 InputStream input = null; //excel输入流
50 try {
51 String webPath = request.getSession().getServletContext().getRealPath("/"); //web项目部署的实际物理地址E:/tomcat/webapps/em/
52 String fullPath = webPath+directoryPath;
53 File directory = new File(fullPath);
54
55 if (directory.isDirectory()) {
56 System.out.println(fullPath);
57 File files[] = directory.listFiles();
58
59 Workbook workbook = null; //excel工作簿
60 File excelFile = null ;
61 String excelFileName = null;
62 String separator = null;
63 for (File file : files) {
64 excelFileName = file.getName();
65 Integer separatorIndex = excelFileName.lastIndexOf(".");//获取扩展名所在位置
66 separator = excelFileName.substring(separatorIndex);//扩展名
67 if(".xls".equals(separator)||".xlsx".equals(separator)) {
68 excelFile = file;
69 input = new FileInputStream(file);
70 break;
71 }
72 }
73 //生成excel表格对象
74 if (excelFile == null) {
75 throw new Exception("无法获取当前excel表格");
76 }
77 if(".xls".equals(separator)) {
78 workbook = new HSSFWorkbook(input);
79 } else {
80 workbook = new XSSFWorkbook(input);
81 }
82
83 //解析工作表
84 for (int i = 0; i < workbook.getNumberOfSheets(); i++) {
85 Sheet sheet = workbook.getSheetAt(i);
86 if( sheet != null ){
87 for (int j = 5; j <= sheet.getLastRowNum(); j++) {
88 Row row = sheet.getRow(j); //获取excel行信息
89 List<String> rowList = null;
90 if( row != null ){
91 rowList = new ArrayList<String>();
92 int cellNumber = row.getPhysicalNumberOfCells();
93 //将列数据装载到list中
94 for (int k = 0; k < cellNumber; k++) {
95 String cellValue = getCellValue(workbook,row.getCell(k)).toString();
96 if (StringUtils.isNotBlank(cellValue)) {
97 rowList.add(cellValue);
98 }
99 }
100 result.add(rowList);
101 }else {
102 continue;
103 }
104 }
105 }
106 }
107 }
108
109 } catch (Exception e) {
110 e.printStackTrace();
111 throw new Exception(e.getMessage());
112 } finally{
113 if(input!=null){
114 input.close();
115 }
116 }
117 return result;
118 }
119
120 /**
121 * 获取单元格值
122 * @param wb
123 * @param cell
124 * @return
125 */
126 protected Object getCellValue(Workbook wb,Cell cell) {
127 Object result = "";
128 if(cell!=null){
129 switch (cell.getCellType()){
130 case Cell.CELL_TYPE_STRING:
131 result = cell.getStringCellValue().trim();
132 break;
133 case Cell.CELL_TYPE_NUMERIC:
134 if (DateUtil.isCellDateFormatted(cell)){
135 result = cell.getDateCellValue();
136 } else {
137 long longData = (long)cell.getNumericCellValue();
138 if(longData == cell.getNumericCellValue()){
139 result = String.valueOf(longData).trim();
140 }else{
141 result = String.valueOf(cell.getNumericCellValue()).trim();
142 }
143 }
144 break;
145 case Cell.CELL_TYPE_FORMULA: //处理公式
146 //cell.setCellFormula(cell.getCellFormula());
147 FormulaEvaluator evaluator = wb.getCreationHelper().createFormulaEvaluator();
148 CellValue cellValue = evaluator.evaluate(cell);
149 //BigDecimal bigDecimal = new BigDecimal(cell.getCachedFormulaResultType());
150 BigDecimal bigDecimal = new BigDecimal(cellValue.getNumberValue());
151 //截取2位小数
152 result = bigDecimal.setScale(2, BigDecimal.ROUND_HALF_UP).toString().trim();
153 break;
154 case Cell.CELL_TYPE_BOOLEAN:
155 result = cell.getBooleanCellValue();
156 break;
157 default:
158 break;
159 }
160 }
161 return result;
162 }
163 }
POI处理excel
时间： 2024-10-27 03:39:20