POI生成Excel文件：Excel，工具类，背景色，边框，居中，合并单元格
作者：互联网
背景今天分配到任务，要导出很多表格，懒得一个个写导出代码，故准备写个工具类
工具类代码如下：
1 package com.swyx.tools.utils.poi;
2
3 import java.io.File;
4 import java.io.FileOutputStream;
5 import java.io.OutputStream;
6 import java.util.List;
7 import java.util.Map;
8
9 import org.apache.poi.hssf.usermodel.HSSFCell;
10 import org.apache.poi.hssf.usermodel.HSSFCellStyle;
11 import org.apache.poi.hssf.usermodel.HSSFPalette;
12 import org.apache.poi.hssf.usermodel.HSSFRow;
13 import org.apache.poi.hssf.usermodel.HSSFSheet;
14 import org.apache.poi.hssf.usermodel.HSSFWorkbook;
15 import org.apache.poi.ss.usermodel.BorderStyle;
16 import org.apache.poi.ss.usermodel.FillPatternType;
17 import org.apache.poi.ss.usermodel.HorizontalAlignment;
18 import org.apache.poi.ss.util.CellRangeAddress;
19 import org.apache.poi.ss.util.RegionUtil;
20
21 /**
22 *
23 * @author wangbaojun1992@163.com
24 * @version poi version ： 4.1.0
25 */
26 public class ExcelWriteUtil {
27
28 /**
29 *
30 * @param titleMape 标题行，为第一行标题内容与样式,参数Map<String,String>结构，字段如下：
31 * {
32 * value:内容值
33 * backgroundColor:背景色,为RGB颜色，3个色值以","隔开，默认"189,215,238"
34 * }
35 * @param titleList 表头行，为第二行表头内容与样式，参数List<Map<String,String>>结构，字段如下：
36 * [
37 * {
38 * value:内容值
39 * backgroundColor:背景色,为RGB颜色，3个色值以","隔开，默认"189,215,238"
40 * }
41 * ]
42 * @param contentList 内容,所有取值均被转换位String类型，参数List<List<String>>结构。
43 * @param contentStyle 内容样式，参数为Map<String,String>结构，字段如下：
44 * {
45 * isZebra：内容区是否使用斑马线，枚举值：0是，1否，默认0
46 * zebraColor：斑马线颜色，为RGB颜色，3个色值以","隔开，默认"230,230,230"
47 * @param dirName 缓存文件的文件夹的绝对路径
48 * @param fileName 文件名，不要带后缀
49 * @return
50 * @throws Exception
51 */
52 @SuppressWarnings("deprecation")
53 public static String exportXlsExcel(Map<String, String> titleMape,List<Map<String, String>> titleList,List<List<String>> contentList,Map<String, String> contentStyle,String dirName,String fileName) throws Exception {
54 //1.验证文件和文件夹名并创建Excel文件
55 if(fileName == null || fileName.trim().equals("")) {
56 throw new Exception("生成Excel文件异常：传入的文件名fileName不可为null、空字符串");
57 }
58 File parentDir = null;
59 if(dirName == null || dirName.trim().equals("")) {
60 throw new Exception("生成Excel文件异常：传入的文件夹名dirName不可为null、空字符串");
61 }
62 try {
63 parentDir = new File(dirName);
64 if(!parentDir.exists()) {
65 parentDir.mkdirs();
66 }
67 } catch (Exception e) {
68 throw new Exception("生成Excel文件异常：传入的文件夹名dirName有误，dirName="+dirName);
69 }finally {
70 if(parentDir == null) {
71 throw new Exception("生成Excel文件异常：创建文件夹出错，dirName="+dirName);
72 }
73 }
74 File excelFile = null;
75 try {
76 excelFile = new File(parentDir, fileName+".xls");
77 if(excelFile.exists()) {
78 excelFile.delete();
79 }
80 excelFile.createNewFile();
81 } catch (Exception e) {
82 throw new Exception("生成Excel文件异常：生成File文件出错，fileName="+fileName);
83 }finally {
84 if(excelFile == null) {
85 throw new Exception("生成Excel文件异常：生成File文件出错，fileName="+fileName);
86 }
87 }
88
89 //2创建工作簿
90 HSSFWorkbook wb=new HSSFWorkbook();
91 HSSFSheet sheet=wb.createSheet();
92
93 //3编辑标题
94 //3.1标题样式
95 HSSFCellStyle titleStyle=wb.createCellStyle();
96 //3.1.1标题背景色
97 HSSFPalette palette0_0 = wb.getCustomPalette();
98 String backgroundColorStr0_0 = titleMape.get("backgroundColor");
99 if(backgroundColorStr0_0 == null || backgroundColorStr0_0.trim().equals("")) {
100 backgroundColorStr0_0 = "189,215,238";
101 }
102 String[] backGroundColorStr0_0Strs = backgroundColorStr0_0.split(",");
103 if(backGroundColorStr0_0Strs.length != 3) {
104 backGroundColorStr0_0Strs = "189,215,238".split(",");
105 }
106 palette0_0.setColorAtIndex((short)9 ,(byte)new Integer(backGroundColorStr0_0Strs[0]).intValue(),(byte)(new Integer(backGroundColorStr0_0Strs[1]).intValue()),(byte)(new Integer(backGroundColorStr0_0Strs[2]).intValue()));
107 titleStyle.setFillForegroundColor((short)9 );
108 titleStyle.setFillPattern(FillPatternType.SOLID_FOREGROUND);
109 //3.1.2标题合并单元格
110 // Region region1 = new Region(0, (short) 0, 0, (short) 6);//参数1：行号 参数2：起始列号 参数3：行号 参数4：终止列号
111 CellRangeAddress rg0_0 = new CellRangeAddress(0,0,(short)0,(short)titleList.size()-1);
112 sheet.addMergedRegion(rg0_0);
113 //3.1.3标题边框
114 //TODO 此处合并单元格的边框样式没有生效，网络上一大堆复制黏贴的东西，试了很多未成功，头痛，暂时遗留该问题
115 //使用RegionUtil类为合并后的单元格添加边框
116 RegionUtil.setBorderBottom(BorderStyle.THIN, rg0_0, sheet); // 下边框
117 RegionUtil.setBorderLeft(BorderStyle.THIN, rg0_0, sheet); // 左边框
118 RegionUtil.setBorderRight(BorderStyle.THIN, rg0_0, sheet); // 有边框
119 RegionUtil.setBorderTop(BorderStyle.THIN, rg0_0, sheet); // 上边框
120 //3.1.4对齐
121 titleStyle.setAlignment(HorizontalAlignment.CENTER); //居中
122
123 //3.2写入标题
124 HSSFRow row0 = sheet.createRow(0);
125 HSSFCell cell0_0 = row0.createCell(0);
126 cell0_0.setCellValue(titleMape.get("value"));
127 cell0_0.setCellStyle(titleStyle);
128
129 //4编辑表头
130 short fi = 11;
131 HSSFRow row1 = sheet.createRow(1);
132 for(int i = 0;i < titleList.size();i ++,fi++) {
133 Map<String, String> oneTitle = titleList.get(i);
134 //4.1当前列表头样式
135 HSSFCellStyle titleStyleI = wb.createCellStyle();
136 //4.1.1当前列表头背景色
137 HSSFPalette palette1_I = wb.getCustomPalette();
138 String backGroundColor1_I = oneTitle.get("backgroundColor");
139 if(backGroundColor1_I == null || backGroundColor1_I.trim().equals("")) {
140 backGroundColor1_I = "189,215,238";
141 }
142 String[] backGroundColor1_IStrs = backGroundColor1_I.split(",");
143 if(backGroundColor1_IStrs.length != 3) {
144 backGroundColor1_IStrs = "189,215,238".split(",");
145 }
146 palette1_I.setColorAtIndex(fi,(byte)(new Integer(backGroundColor1_IStrs[0]).intValue()),(byte)(new Integer(backGroundColor1_IStrs[1]).intValue()),(byte)(new Integer(backGroundColor1_IStrs[2]).intValue()));
147 titleStyleI.setFillPattern(FillPatternType.SOLID_FOREGROUND);
148 titleStyleI.setFillForegroundColor(fi);
149 //4.1.2当前列表头边框
150 titleStyleI.setBorderBottom(BorderStyle.THIN); //下边框
151 titleStyleI.setBorderLeft(BorderStyle.THIN);//左边框
152 titleStyleI.setBorderTop(BorderStyle.THIN);//上边框
153 titleStyleI.setBorderRight(BorderStyle.THIN);//右边框
154 //4.1.3对齐
155 titleStyleI.setAlignment(HorizontalAlignment.CENTER); //居中
156 //4.2写入当前列表头
157 HSSFCell cell1_I = row1.createCell(i);
158 cell1_I.setCellValue(oneTitle.get("value"));
159 cell1_I.setCellStyle(titleStyleI);
160 }
161
162 //5编辑内容区
163 //5.1准备样式
164 String isZebraStr = contentStyle.get("isZebra");
165 boolean isZebra = true;
166 if(isZebraStr != null && isZebraStr.equals("1")) {
167 isZebra = false;
168 }
169 //5.1.1斑马线行样式
170 HSSFCellStyle style1 = wb.createCellStyle();
171 //背景色
172 HSSFPalette paletteC = wb.getCustomPalette();
173 String backGroundColorC = contentStyle.get("zebraColor");
174 if(backGroundColorC == null || backGroundColorC.trim().equals("")) {
175 backGroundColorC = "230,230,230";
176 }
177 String[] backGroundColorCStrs = backGroundColorC.split(",");
178 if(backGroundColorCStrs.length != 3) {
179 backGroundColorCStrs = "230,230,230".split(",");
180 }
181 paletteC.setColorAtIndex((short)10 , (byte)(new Integer(backGroundColorCStrs[0]).intValue()),(byte)(new Integer(backGroundColorCStrs[1]).intValue()),(byte)(new Integer(backGroundColorCStrs[2]).intValue()));
182 style1.setFillPattern(FillPatternType.SOLID_FOREGROUND);
183 style1.setFillForegroundColor((short)10);
184 //边框
185 style1.setBorderBottom(BorderStyle.THIN); //下边框
186 style1.setBorderLeft(BorderStyle.THIN);//左边框
187 style1.setBorderTop(BorderStyle.THIN);//上边框
188 style1.setBorderRight(BorderStyle.THIN);//右边框
189 //5.1.2非斑马线行样式
190 HSSFCellStyle style0 = wb.createCellStyle();
191 //背景色
192 style0.setFillPattern(FillPatternType.SOLID_FOREGROUND);
193 //边框
194 style0.setBorderBottom(BorderStyle.THIN); //下边框
195 style0.setBorderLeft(BorderStyle.THIN);//左边框
196 style0.setBorderTop(BorderStyle.THIN);//上边框
197 style0.setBorderRight(BorderStyle.THIN);//右边框
198
199 //5.2写入内容
200 for(int i = 0;i < contentList.size();i ++) {
201 List<String> contents = contentList.get(i);
202 HSSFRow rowI = sheet.createRow(i+2);
203 for(int j = 0;j < contents.size();j ++) {
204 HSSFCell cellJ = rowI.createCell(j);
205 cellJ.setCellValue(contents.get(j));
206 if(i % 2 == 1) {
207 if(isZebra) {
208 cellJ.setCellStyle(style1);
209 }else {
210 cellJ.setCellStyle(style0);
211 }
212 }else {
213 cellJ.setCellStyle(style0);
214 }
215 }
216 }
217
218 //6将文件输出
219 OutputStream ouputStream = null;
220 try {
221 ouputStream = new FileOutputStream(excelFile);
222 wb.write(ouputStream);
223 ouputStream.flush();
224 wb.close();
225 } catch (Exception e) {
226 throw new Exception("生成Excel文件异常：写出Excel文件异常");
227 }finally {
228 try {
229 if(ouputStream != null) {
230 ouputStream.close();
231 }
232 } catch (Exception e2) {
233 }
234 }
235
236 return excelFile.getAbsolutePath();
237 }
238 }
工具类调用：
1 package com.swyx.tools.utils.poi;
2
3 import java.util.ArrayList;
4 import java.util.HashMap;
5 import java.util.List;
6 import java.util.Map;
7
8 public class ExcelWriteUtilTest {
9 public static void main(String[] args) throws Exception {
10 exportXlsExcel_Test();
11 }
12
13 private static void exportXlsExcel_Test() throws Exception {
14 Map<String, String> titleMape = new HashMap<String, String>();
15 titleMape.put("value", "生成Excel文件测试");
16
17 List<Map<String, String>> titleList = new ArrayList<Map<String,String>>();
18 Map<String, String> tm1 = new HashMap<String, String>();
19 tm1.put("value", "第1列");
20 titleList.add(tm1);
21 Map<String, String> tm2 = new HashMap<String, String>();
22 tm2.put("value", "第2列");
23 titleList.add(tm2);
24 Map<String, String> tm3 = new HashMap<String, String>();
25 tm3.put("value", "第3列");
26 titleList.add(tm3);
27 Map<String, String> tm4 = new HashMap<String, String>();
28 tm4.put("value", "第4列");
29 titleList.add(tm4);
30 Map<String, String> tm5 = new HashMap<String, String>();
31 tm5.put("value", "第5列");
32 titleList.add(tm5);
33 Map<String, String> tm6 = new HashMap<String, String>();
34 tm6.put("value", "第6列");
35 titleList.add(tm6);
36
37 List<List<String>> contentList = new ArrayList<List<String>>();
38 List<String> cl1 = new ArrayList<String>();
39 cl1.add("111111");cl1.add("111111");cl1.add("111111");cl1.add("111111");cl1.add("111111");cl1.add("111111");
40 contentList.add(cl1);
41
42 List<String> cl2 = new ArrayList<String>();
43 cl2.add("222222");cl2.add("222222");cl2.add("222222");cl2.add("222222");cl2.add("222222");cl2.add("222222");
44 contentList.add(cl2);
45
46 List<String> cl3 = new ArrayList<String>();
47 cl3.add("333333");cl3.add("333333");cl3.add("333333");cl3.add("333333");cl3.add("333333");cl3.add("333333");
48 contentList.add(cl3);
49
50 List<String> cl4 = new ArrayList<String>();
51 cl4.add("444444");cl4.add("444444");cl4.add("444444");cl4.add("444444");cl4.add("444444");cl4.add("444444");
52 contentList.add(cl4);
53
54 List<String> cl5 = new ArrayList<String>();
55 cl5.add("555555");cl5.add("555555");cl5.add("555555");cl5.add("555555");cl5.add("555555");cl5.add("555555");
56 contentList.add(cl5);
57
58 List<String> cl6 = new ArrayList<String>();
59 cl6.add("666666");cl6.add("666666");cl6.add("666666");cl6.add("666666");cl6.add("666666");cl6.add("666666");
60 contentList.add(cl6);
61
62 List<String> cl7 = new ArrayList<String>();
63 cl7.add("777777");cl7.add("777777");cl7.add("777777");cl7.add("777777");cl7.add("777777");cl7.add("777777");
64 contentList.add(cl7);
65
66 List<String> cl8 = new ArrayList<String>();
67 cl8.add("888888");cl8.add("888888");cl8.add("888888");cl8.add("888888");cl8.add("888888");cl8.add("888888");
68 contentList.add(cl8);
69
70 List<String> cl9 = new ArrayList<String>();
71 cl9.add("999999");cl9.add("999999");cl9.add("999999");cl9.add("999999");cl9.add("999999");cl9.add("999999");
72 contentList.add(cl9);
73
74 Map<String, String> contentStyle = new HashMap<String, String>();
75 String dirName = "C:\\WorkSpaces\\dxc";
76 String fileName = "ExcelWriteUtil_exportXlsExcel_Test";
77
78 String name = ExcelWriteUtil.exportXlsExcel(titleMape, titleList, contentList, contentStyle, dirName, fileName);
79 System.out.println(name);
80 }
81 }
生成Excel：
标签：List,单元格,Excel,边框,add,POI,import,new,BorderStyle 来源： https://www.cnblogs.com/ShouWangYiXin/p/10962176.html