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最近经常需要把sql整理成excel,本人比较懒,所以写一个小工具,用到了jxl包。以前没有接触过,正好了解一下。
一、基础知识
jxl操作excel包括对象 Workbook,Sheet,Cell。
一个excel就对应一个Workbook对象,
一个Sheet页表就对应一个Sheet对象,
一个单元格就对应一个Cell对象,
一个Workbook可以有多个Sheet对象,
一个Sheet对象可以有多个Cell对象。
二、 小工具
1 package com.mq;
2
3
4 import jxl.Workbook;
5 import jxl.write.Label;
6 import jxl.write.WritableSheet;
7 import jxl.write.WritableWorkbook;
8 import jxl.write.WriteException;
9 import jxl.write.biff.RowsExceededException;
10
11 import java.io.*;
12 import java.util.ArrayList;
13
14 class SqlToExel {
15 public static void main(String[] args) {
16 String readPath ="F:\\0017.sql";
17 String writePath="F:\\0017.xls";
18 ArrayList> allDate =getData(readPath);
19 writeExcel(writePath,allDate);
20 }
21 //读取文件
22 private static ArrayList> getData(String path){
23 //用于存储所有从文件中读取的数据
24 ArrayList> allDate = new ArrayList<>();
25 try {
26 //字符缓冲输入流
27 BufferedReader reader = new BufferedReader(new InputStreamReader(new FileInputStream(path))) ;
28 String line;
29 //存储每一行要展示的内容
30 ArrayList oneDate = new ArrayList<>();
31 //判断是否读到行尾
32 while((line = reader.readLine())!= null){
33 //判断读到的是否为空行
34 if(line.equals("")){
35 allDate.add(oneDate);
36 oneDate = new ArrayList<>();
37 }
38 //判断读到的内容是否为插入语句
39 if(line.indexOf("insert")!=-1){
40 oneDate.add(line);
41 }
42 }
43
44 } catch (FileNotFoundException e) {
45 e.printStackTrace();
46 } catch (IOException e) {
47 e.printStackTrace();
48 }
49 return allDate;
50 }
51
52 private static void writeExcel(String path, ArrayList> allDate){
53 if(path !=null && allDate !=null){
54 WritableWorkbook wwb = null;
55 WritableSheet ws;
56 String sheetName= "zhr";
57 try {
58 //首先要使用Workbook类的工厂方法创建一个可写入的工作薄(Workbook)对象
59 wwb = Workbook.createWorkbook(new File(path));
60 //创建sheet
61 ws = wwb.createSheet(sheetName, 1);
62 //循环遍历获取内容
63 for(int i=0;i
64 Label labelC;
65 ArrayList oneDate= allDate.get(i);
66 String mergeDate = "";
67 for (int j = 0; j < oneDate.size(); j++) {
68 String oneLabelDate = oneDate.get(j);
69 mergeDate = mergeDate + oneLabelDate + "\n";
70 }
71 labelC = new Label( 0, i, mergeDate);
72 //将生成的单元格添加到工作表中
73 ws.addCell(labelC);
74 }
75 //写入数据
76 wwb.write();
77
78 } catch (IOException e) {
79 e.printStackTrace();
80 } catch (RowsExceededException e) {
81 e.printStackTrace();
82 } catch (WriteException e) {
83 e.printStackTrace();
84 } finally{
85 try {
86 //关闭工作簿
87 wwb.close();
88 } catch (WriteException e) {
89 // TODO Auto-generated catch block
90 e.printStackTrace();
91 } catch (IOException e) {
92 // TODO Auto-generated catch block
93 e.printStackTrace();
94 }
95 }
96 }
97 }
98 }
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来源: https://www.cnblogs.com/muqingzhi123/p/9641839.html