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  • Java生成Excel表格

    简单的示范代码如下：

    package xls.test;
import java.io.File;
import jxl.Workbook;
import jxl.write.Label;
import jxl.write.Number;
import jxl.write.WritableSheet;
import jxl.write.WritableWorkbook;
public class XlsExample {
	public static void main(String[] args) {
		try {
			WritableWorkbook book = Workbook.createWorkbook(new File("test.xls"));
            WritableSheet sheet = book.createSheet("sheet0", 0);
			int col = 0;
            int row = 0;
            sheet.addCell(new Label(col++, row, "语文"));
			sheet.addCell(new Label(col++, row, "数学"));
			sheet.addCell(new Label(col++, row, "英语"));
			sheet.addCell(new Label(col++, row, "物理"));
			sheet.addCell(new Label(col++, row, "化学"));
			sheet.addCell(new Label(col++, row, "生物"));
			for(row = 1;row < 10;){
				col = 0;
				sheet.addCell(new Number(col++, row, (int)(Math.random()*100)));
				sheet.addCell(new Number(col++, row, (int)(Math.random()*100)));
				sheet.addCell(new Number(col++, row, (int)(Math.random()*100)));
				sheet.addCell(new Number(col++, row, (int)(Math.random()*100)));
				sheet.addCell(new Number(col++, row, (int)(Math.random()*100)));
				sheet.addCell(new Number(col++, row, (int)(Math.random()*100)));
				row++;
			}
			book.write();
            book.close();
		} catch (Exception e) {
			e.printStackTrace();
		} 
	}
}

    运行结果如下：

    语文	数学	英语	物理	化学	生物
15	3	15	23	12	76
35	67	59	45	29	76
30	9	10	49	38	9
88	27	63	39	20	18
11	78	28	12	65	68
30	89	43	28	53	84
21	55	40	97	78	18
56	31	74	10	41	86
13	40	27	54	26	8

    使用的java包：jxl-2.6.12.jar

    这些代码还是可以派上用场的，一个朋友在做日志分析，要将几十个像下面格式日志信息导入到excel中：

    2013-10-20 日志记录
========================================

---------- 00:00:00 ----------
机器人已经收到命令

---------- 00:00:04 ----------
收到机器人起始抓表完成！

---------- 00:00:11 ----------
收到机器人命令完成！

---------- 00:00:12 ----------
机器人执行从1到1取表位抓到上表位命令成功！

    导出的格式如下所示：

    xxxx  00:00:01 00:00:02
xxxx  00:00:02 00:00:23 10:00:00

     下面是示例代码，以后有类似的可以拿来参考一下：

      1 import java.io.BufferedReader;
  2 import java.io.File; 
  3 import java.io.FileInputStream;
  4 import java.io.IOException;
  5 import java.io.InputStreamReader;
  6 import java.util.Map.Entry;
  7 import java.util.regex.Matcher;
  8 import java.util.regex.Pattern;
  9 import java.util.ArrayList;
 10 import java.util.Iterator;
 11 import java.util.Map;
 12 import java.util.List;
 13 import java.util.HashMap;
 14 import java.util.Set;
 15 
 16 import jxl.Workbook; 
 17 import jxl.write.Label; 
 18 import jxl.write.WritableSheet; 
 19 import jxl.write.WritableWorkbook; 
 20 import jxl.write.WriteException;
 21 import jxl.write.biff.RowsExceededException;
 22 public class LogProcess { 
 23     String regx="\\-+ \\d{2}:\\d{2}:\\d{2} \\-+";
 24     Pattern p = Pattern.compile(regx);
 25     public Map<String,List<String>> map = new HashMap<String,List<String>>();
 26     public void processLog(BufferedReader br) throws IOException{
 27         String temp1=null;
 28         temp1=br.readLine();
 29         while(temp1 != null){
 30             Matcher m = p.matcher(temp1);
 31             boolean match = m.matches();
 32             if(match)
 33                 break;
 34             temp1=br.readLine();
 35         }
 36         while(temp1!=null){
 37             Matcher m = p.matcher(temp1);
 38             boolean match = m.matches();
 39             if(!match){
 40                 ;//System.out.println("输入格式不正确!");
 41             }else{
 42                 ;//System.out.println("输入格式正确!"+ temp1);
 43             }
 44             String temp2=br.readLine();
 45             if( temp2 != null && !temp2.isEmpty()){
 46                  if(map.containsKey(temp2)){
 47                      temp1 = temp1.replaceAll("-", "").trim();
 48                      map.get(temp2).add(temp1);
 49                      
 50                  }else{
 51                      List<String> tmpList = new ArrayList<String>();
 52                      temp1 = temp1.replaceAll("-", "").trim();
 53                      tmpList.add(temp1);
 54                      map.put(temp2, tmpList);
 55                  }
 56             }
 57             temp1 = br.readLine();
 58             temp1 = br.readLine();
 59         }
 60     }
 61     public void writeToExcel(String fileName,String path) throws IOException, RowsExceededException, WriteException{
 62         String xlsName = path +  fileName+".xls";
 63         WritableWorkbook book = Workbook.createWorkbook(new File(xlsName)); 
 64         WritableSheet sheet = book.createSheet("sheet0", 0); 
 65         int col = 0; 
 66         int row = 0; 
 67         Set<Map.Entry<String, List<String>>> set = map.entrySet();
 68         Iterator<Entry<String, List<String>>>  it = set.iterator();
 69         while(it.hasNext()){
 70             Map.Entry<String, List<String>> entry = it.next();
 71             String key = entry.getKey();
 72             sheet.addCell(new Label(col, row, key));
 73             col++;
 74             List<String> list = entry.getValue();
 75             StringBuffer bf = new StringBuffer();
 76             System.out.println(key + ":" + bf.toString());
 77         }
 78         Set<Map.Entry<String, List<String>>> set2 = map.entrySet();
 79         Iterator<Entry<String, List<String>>>  it2 = set2.iterator();
 80         col = 0; 
 81         row = 1;
 82         while(it2.hasNext()){
 83             int newrow = 1;
 84             Map.Entry<String, List<String>> entry = it2.next();
 85             String key = entry.getKey();
 86             List<String> list = entry.getValue();
 87             StringBuffer bf = new StringBuffer();
 88             for(int i = 0; i < list.size(); i++){
 89                 bf.append(list.get(i));
 90                 bf.append("\t");
 91                 sheet.addCell(new Label(col, newrow++,list.get(i)));
 92             }
 93             col++;
 94             System.out.println(key + ":" + bf.toString());
 95         }
 96         book.write(); 
 97         book.close(); 
 98     }
 99     public void writeToExcel2(String fileName,String path) throws IOException, RowsExceededException, WriteException{
100         String xlsName = path +  fileName+".xls";
101         File file = new File(xlsName);
102         if(file.exists())
103             file.delete();
104         WritableWorkbook book = Workbook.createWorkbook(file); 
105         WritableSheet sheet = book.createSheet("sheet0", 0); 
106         int col = 0; 
107         int row = 0; 
108         Set<Map.Entry<String, List<String>>> set = map.entrySet();
109         Iterator<Entry<String, List<String>>>  it = set.iterator();
110         while(it.hasNext()){
111             Map.Entry<String, List<String>> entry = it.next();
112             String key = entry.getKey();
113             sheet.addCell(new Label(col, row, key));
114             row++;
115             List<String> list = entry.getValue();
116             StringBuffer bf = new StringBuffer();
117             System.out.println(key + ":" + bf.toString());
118         }
119         Set<Map.Entry<String, List<String>>> set2 = map.entrySet();
120         Iterator<Entry<String, List<String>>>  it2 = set2.iterator();
121         col = 1; 
122         row = 0;
123         while(it2.hasNext()){
124             int newcol = 1;
125             Map.Entry<String, List<String>> entry = it2.next();
126             String key = entry.getKey();
127             List<String> list = entry.getValue();
128             StringBuffer bf = new StringBuffer();
129             for(int i = 0; i < list.size(); i++){
130                 bf.append(list.get(i));
131                 bf.append("\t");
132                 sheet.addCell(new Label(newcol++, row,list.get(i)));
133             }
134             row++;
135             //System.out.println(key + ":" + bf.toString());
136         }
137         book.write(); 
138         book.close(); 
139     }
140     public static void main(String[] args) { 
141         try { 
142             String path = "E:\\workspace\\log\\";
143             String outputPath = "E:\\workspace\\excel\\";
144             File file=new File(path);
145             File files[] = file.listFiles();
146             for(int i = 0; i < files.length; i++){
147                  String fileName = files[i].getName();
148                  System.out.println(fileName);
149                  InputStreamReader insReader = new InputStreamReader(new FileInputStream(files[i]),"utf-8");
150                  BufferedReader br = new BufferedReader(insReader);
151                  LogProcess logProcess = new LogProcess();
152                  logProcess.processLog(br);
153                  try{
154                      logProcess.writeToExcel2(fileName,outputPath);
155                  }catch(Exception ex){
156                      System.out.println("write excel exception.");
157                      logProcess.writeToExcel(fileName,outputPath);
158                  }
159             }
160         } catch (Exception e) { 
161             e.printStackTrace(); 
162         }  
163     } 
164 }
    View Code
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  • 原文地址：https://www.cnblogs.com/cstar/p/2847796.html
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