Android创建与读取Excel

主流的操作Excel的有两种方法，一种是通过poi包，另一种是通过jxl包。这里我主要讲解通过jxl包来读写Excel。

首先需要导入一个jxl.jar包。

下载地址：http://www.andykhan.com/jexcelapi/download.html

下载后的文件会包含jxl相关的API。

下面直接上代码：

WriteExcel.java

  1 import java.io.File;
  2
  3 import java.io.IOException;
  4
  5 import java.util.Locale;
  6
  7
  8
  9 import jxl.CellView;
 10
 11 import jxl.Workbook;
 12
 13 import jxl.WorkbookSettings;
 14
 15 import jxl.format.UnderlineStyle;
 16
 17 import jxl.write.Formula;
 18
 19 import jxl.write.Label;
 20
 21 import jxl.write.Number;
 22
 23 import jxl.write.WritableCellFormat;
 24
 25 import jxl.write.WritableFont;
 26
 27 import jxl.write.WritableSheet;
 28
 29 import jxl.write.WritableWorkbook;
 30
 31 import jxl.write.WriteException;
 32
 33 import jxl.write.biff.RowsExceededException;
 34
 35
 36
 37 public class WriteExcel {
 38
 39
 40
 41     private WritableCellFormat timesBoldUnderline;
 42
 43     private WritableCellFormat times;
 44
 45     private String inputFile;
 46
 47
 48
 49     public void setOutputFile(String inputFile) {
 50
 51         this.inputFile = inputFile;
 52
 53     }
 54
 55
 56
 57     public void write() throws IOException, WriteException {
 58
 59         File file = new File(inputFile);
 60
 61         WorkbookSettings wbSettings = new WorkbookSettings();
 62
 63
 64
 65         wbSettings.setLocale(new Locale("en", "EN"));
 66
 67
 68
 69         WritableWorkbook workbook = Workbook.createWorkbook(file, wbSettings);
 70
 71         workbook.createSheet("Report", 0);
 72
 73         WritableSheet excelSheet = workbook.getSheet(0);
 74
 75         createLabel(excelSheet);
 76
 77         createContent(excelSheet);
 78
 79
 80
 81         workbook.write();
 82
 83         workbook.close();
 84
 85     }
 86
 87
 88
 89     private void createLabel(WritableSheet sheet)
 90
 91             throws WriteException {
 92
 93
 94
 95         WritableFont times10pt = new WritableFont(WritableFont.TIMES, 10);
 96
 97
 98
 99         times = new WritableCellFormat(times10pt);
100
101
102
103         times.setWrap(true);
104
105
106
107         WritableFont times10ptBoldUnderline = new WritableFont(WritableFont.TIMES, 10, WritableFont.BOLD, false,
108
109                 UnderlineStyle.SINGLE);
110
111         timesBoldUnderline = new WritableCellFormat(times10ptBoldUnderline);
112
113
114
115         timesBoldUnderline.setWrap(true);
116
117
118
119         CellView cv = new CellView();
120
121         cv.setFormat(times);
122
123         cv.setFormat(timesBoldUnderline);
124
125         cv.setAutosize(true);
126
127
128
129
130
131         addCaption(sheet, 0, 0, "Header 1");
132
133         addCaption(sheet, 1, 0, "This is another header");
134
135
136
137
138
139     }
140
141
142
143     private void createContent(WritableSheet sheet) throws WriteException,
144
145             RowsExceededException {
146
147
148
149         for (int i = 1; i < 10; i++) {
150
151
152
153             addNumber(sheet, 0, i, i + 10);
154
155
156
157             addNumber(sheet, 1, i, i * i);
158
159         }
160
161
162
163         StringBuffer buf = new StringBuffer();
164
165         buf.append("SUM(A2:A10)");
166
167         Formula f = new Formula(0, 10, buf.toString());
168
169         sheet.addCell(f);
170
171         buf = new StringBuffer();
172
173         buf.append("SUM(B2:B10)");
174
175         f = new Formula(1, 10, buf.toString());
176
177         sheet.addCell(f);
178
179
180
181         for (int i = 12; i < 20; i++) {
182
183             addLabel(sheet, 0, i, "Boring text " + i);
184
185             addLabel(sheet, 1, i, "Another text");
186
187         }
188
189     }
190
191
192
193     private void addCaption(WritableSheet sheet, int column, int row, String s)
194
195             throws RowsExceededException, WriteException {
196
197         Label label;
198
199         label = new Label(column, row, s, timesBoldUnderline);
200
201         sheet.addCell(label);
202
203     }
204
205
206
207     private void addNumber(WritableSheet sheet, int column, int row,
208
209                            Integer integer) throws WriteException, RowsExceededException {
210
211         Number number;
212
213         number = new Number(column, row, integer, times);
214
215         sheet.addCell(number);
216
217     }
218
219
220
221     private void addLabel(WritableSheet sheet, int column, int row, String s)
222
223             throws WriteException, RowsExceededException {
224
225         Label label;
226
227         label = new Label(column, row, s, times);
228
229         sheet.addCell(label);
230
231     }
232
233
234
235 }

ReadExcel.java

 1 import java.io.File;
 2 import java.io.IOException;
 3
 4 import jxl.Cell;
 5 import jxl.CellType;
 6 import jxl.Sheet;
 7 import jxl.Workbook;
 8 import jxl.read.biff.BiffException;
 9
10 public class ReadExcel {
11     private String inputFile;
12
13     public void setInputFile(String inputFile) {
14         this.inputFile = inputFile;
15     }
16
17     public void read() throws IOException  {
18         File inputWorkbook = new File(inputFile);
19         Workbook w;
20         try {
21             w = Workbook.getWorkbook(inputWorkbook);
22
23             Sheet sheet = w.getSheet(0);
24
25             for (int j = 0; j < sheet.getColumns(); j++) {
26                 for (int i = 0; i < sheet.getRows(); i++) {
27                     Cell cell = sheet.getCell(j, i);
28                     CellType type = cell.getType();
29                     if (type == CellType.LABEL) {
30                         System.out.println("I got a label "
31                                 + cell.getContents());
32                     }
33
34                     if (type == CellType.NUMBER) {
35                         System.out.println("I got a number "
36                                 + cell.getContents());
37                     }
38
39                 }
40             }
41         } catch (BiffException e) {
42             e.printStackTrace();
43         }
44     }
45
46 }

调运WriteExcel的代码：

 1     WriteExcel writeExcel=new WriteExcel();
 2
 3     writeExcel.setOutputFile("/sdcard/test.xls");
 4
 5     try {
 6
 7         writeExcel.write();
 8
 9     } catch (IOException e) {
10
11         e.printStackTrace();
12
13     } catch (WriteException e) {
14
15         e.printStackTrace();
16
17     }

执行完WriteExcel后便会在Android虚拟机中生成test.xls文件

调运ReadExcel的代码：

 1 ReadExcel readExcel=new ReadExcel();
 2
 3     readExcel.setInputFile("/sdcard/test.xls");
 4
 5     try {
 6
 7         readExcel.read();
 8
 9     } catch (IOException e) {
10
11         e.printStackTrace();
12
13     }
14
15  

好了，Android读写Excel的功能就能基本实现了。