1. 引言
文件导出时支持设置单元格样式; 通过XSSFCellStyle 样式来封装单元格的背景颜色, 文本排版, 文本字体样式等.
示例如下:
// 字体样式
Font redFont = workBook.createFont();
redFont.setColor(HSSFColor.DARK_RED.index);
redFont.setFontHeightInPoints((short) 30);
redFont.setFontName("微软雅黑");
redFont.setItalic(true);
// 单元格样式
XSSFCellStyle redStyle = workBook.createCellStyle();
redStyle.setVerticalAlignment(VerticalAlignment.CENTER);
redStyle.setAlignment(HorizontalAlignment.RIGHT);
redStyle.setFont(redFont);
2. 字体颜色设置
本身Font 接口提供了几个颜色常量, 同时提供了setColor 方法支持自定义颜色.
Font redFont = workBook.createFont();
redFont.setColor(Font.COLOR_RED);
Font blueFont = workBook.createFont();
blueFont.setColor(HSSFColor.DARK_BLUE.index);
2.1 Font.java
/**
* Document:
* http://poi.apache.org/apidocs/dev/org/apache/poi/ss/usermodel/Font.html
*/
package org.apache.poi.ss.usermodel;
public interface Font {
/**
* normal type of black color.
*/
public final static short COLOR_NORMAL = 0x7fff;
/**
* Dark Red color
*/
public final static short COLOR_RED = 0xa;
/**
* set the color for the font
* @param color to use
* @see #COLOR_NORMAL Note: Use this rather than HSSFColor.AUTOMATIC for default font color
* @see #COLOR_RED
*/
void setColor(short color);
/**
* get the color for the font
* @return color to use
* @see #COLOR_NORMAL
* @see #COLOR_RED
* @see org.apache.poi.hssf.usermodel.HSSFPalette#getColor(short)
*/
short getColor();
/**
* get the index within the XSSFWorkbook (sequence within the collection of Font objects)
*
* @return unique index number of the underlying record this Font represents (probably you don't care
* unless you're comparing which one is which)
*/
public short getIndex();
...
}
2.2 HSSFColor.java
颜色0x 值有在HSSFColor 源码中封装一些常用的颜色. 使用方式直接调用颜色索引值即可. 结合setColor()
public class HSSFColor implements Color {
private static Map<Integer,HSSFColor> indexHash;
private static Map<HSSFColorPredefined,HSSFColor> enumList;
private java.awt.Color color;
private int index;
private int index2;
/**
* Predefined HSSFColors with their given palette index (and an optional 2nd index)
*
* @since POI 3.16 beta 2
*/
public enum HSSFColorPredefined {
BLACK (0x08, -1, 0x000000),
BROWN (0x3C, -1, 0x993300),
OLIVE_GREEN (0x3B, -1, 0x333300),
DARK_GREEN (0x3A, -1, 0x003300),
DARK_TEAL (0x38, -1, 0x003366),
DARK_BLUE (0x12, 0x20, 0x000080),
INDIGO (0x3E, -1, 0x333399),
GREY_80_PERCENT (0x3F, -1, 0x333333),
ORANGE (0x35, -1, 0xFF6600),
DARK_YELLOW (0x13, -1, 0x808000),
GREEN (0x11, -1, 0x008000),
TEAL (0x15, 0x26, 0x008080),
BLUE (0x0C, 0x27, 0x0000FF),
BLUE_GREY (0x36, -1, 0x666699),
GREY_50_PERCENT (0x17, -1, 0x808080),
RED (0x0A, -1, 0xFF0000),
LIGHT_ORANGE (0x34, -1, 0xFF9900),
LIME (0x32, -1, 0x99CC00),
SEA_GREEN (0x39, -1, 0x339966),
AQUA (0x31, -1, 0x33CCCC),
LIGHT_BLUE (0x30, -1, 0x3366FF),
VIOLET (0x14, 0x24, 0x800080),
GREY_40_PERCENT (0x37, -1, 0x969696),
PINK (0x0E, 0x21, 0xFF00FF),
GOLD (0x33, -1, 0xFFCC00),
YELLOW (0x0D, 0x22, 0xFFFF00),
BRIGHT_GREEN (0x0B, -1, 0x00FF00),
TURQUOISE (0x0F, 0x23, 0x00FFFF),
DARK_RED (0x10, 0x25, 0x800000),
SKY_BLUE (0x28, -1, 0x00CCFF),
PLUM (0x3D, 0x19, 0x993366),
GREY_25_PERCENT (0x16, -1, 0xC0C0C0),
ROSE (0x2D, -1, 0xFF99CC),
LIGHT_YELLOW (0x2B, -1, 0xFFFF99),
LIGHT_GREEN (0x2A, -1, 0xCCFFCC),
LIGHT_TURQUOISE (0x29, 0x1B, 0xCCFFFF),
PALE_BLUE (0x2C, -1, 0x99CCFF),
LAVENDER (0x2E, -1, 0xCC99FF),
WHITE (0x09, -1, 0xFFFFFF),
CORNFLOWER_BLUE (0x18, -1, 0x9999FF),
LEMON_CHIFFON (0x1A, -1, 0xFFFFCC),
MAROON (0x19, -1, 0x7F0000),
ORCHID (0x1C, -1, 0x660066),
CORAL (0x1D, -1, 0xFF8080),
ROYAL_BLUE (0x1E, -1, 0x0066CC),
LIGHT_CORNFLOWER_BLUE(0x1F, -1, 0xCCCCFF),
TAN (0x2F, -1, 0xFFCC99),
/**
* Special Default/Normal/Automatic color.<p>
* <i>Note:</i> This class is NOT in the default Map returned by HSSFColor.
* The index is a special case which is interpreted in the various setXXXColor calls.
*/
AUTOMATIC (0x40, -1, 0x000000);
private HSSFColor color;
HSSFColorPredefined(int index, int index2, int rgb) {
this.color = new HSSFColor(index, index2, new java.awt.Color(rgb));
}
/**
* @see HSSFColor#getIndex()
*/
public short getIndex() {
return color.getIndex();
}
/**
* @see HSSFColor#getIndex2()
*/
public short getIndex2() {
return color.getIndex2();
}
/**
* @see HSSFColor#getTriplet()
*/
public short [] getTriplet() {
return color.getTriplet();
}
/**
* @see HSSFColor#getHexString()
*/
public String getHexString() {
return color.getHexString();
}
/**
* @return (a copy of) the HSSFColor assigned to the enum
*/
public HSSFColor getColor() {
return new HSSFColor(getIndex(), getIndex2(), color.color);
}
}
...
}
3. 样例演示
3.1 前端报表
3.2 文件导出
3.3 后端代码
关键导出方法
/**
* 写入sheet页-适用2007及以上
* API > http://poi.apache.org/apidocs/dev/org/apache/poi/ss/util/CellRangeAddress.html
* @param workBook 工作簿
* @param sheetNum sheet页个数
* @param sheetSize 每个sheet页行数
* @param headerDataList 表头数据
* @param data 数据
* @param headerCellRangeAddressList 标题合并
* @param exportSource 业务来源
*/
public static void writeSheetDataFor2007(XSSFWorkbook workBook, Integer sheetNum, Integer sheetSize,
List<LinkedHashMap<String, Object>> headerDataList, List<LinkedHashMap<String, Object>> data,
List<CellRangeAddress> headerCellRangeAddressList,
Integer exportSource) {
// start 样式开始
// 公用垂直居中样式\公用垂直靠左样式\公用垂直靠右样式
XSSFCellStyle centerStyle = workBook.createCellStyle();
centerStyle.setVerticalAlignment(VerticalAlignment.CENTER);
centerStyle.setAlignment(HorizontalAlignment.CENTER);
XSSFCellStyle leftStyle = workBook.createCellStyle();
leftStyle.setVerticalAlignment(VerticalAlignment.CENTER);
leftStyle.setAlignment(HorizontalAlignment.LEFT);
XSSFCellStyle rightStyle = workBook.createCellStyle();
rightStyle.setVerticalAlignment(VerticalAlignment.CENTER);
rightStyle.setAlignment(HorizontalAlignment.RIGHT);
// 粗体居中
XSSFCellStyle blodStyle = workBook.createCellStyle();
blodStyle.setVerticalAlignment(VerticalAlignment.CENTER);
blodStyle.setAlignment(HorizontalAlignment.CENTER);
Font blodFont = workBook.createFont();
blodFont.setBold(true);
blodStyle.setFont(blodFont);
// 红色字体居右\蓝色字体居右
XSSFCellStyle redStyle = workBook.createCellStyle();
Font redFont = workBook.createFont();
redFont.setColor(HSSFColor.DARK_RED.index);
redStyle.setVerticalAlignment(VerticalAlignment.CENTER);
redStyle.setAlignment(HorizontalAlignment.RIGHT);
redStyle.setFont(redFont);
XSSFCellStyle blueStyle = workBook.createCellStyle();
Font blueFont = workBook.createFont();
blueFont.setColor(HSSFColor.DARK_BLUE.index);
blueStyle.setVerticalAlignment(VerticalAlignment.CENTER);
blueStyle.setAlignment(HorizontalAlignment.RIGHT);
blueStyle.setFont(blueFont);
// end 样式结束
// 封装单元格样式集合, 包括颜色, 排版
List<XSSFCellStyle> cellStyleList = new ArrayList<>();
LinkedHashMap<String, Object> headerData = headerDataList.get(0);
for (int i = 0; i < sheetNum; i++) {
// 创建新的sheet 页
XSSFSheet sheet = workBook.createSheet();
sheet.setDefaultColumnWidth((short) 15);
//写入标题行, 标题行数
int headerDataListSize = headerDataList.size();
cellStyleList.clear();
for (int n = 0; n < headerDataList.get(0).size(); n++ ) {
// 标题行样式
cellStyleList.add(blodStyle);
}
writeRowDataFor2007(sheet, headerData, headerDataList, workBook, 0, 0, cellStyleList);
// 写入行数据
// 自定义单元格样式 for (int n = 0; n < headerDataList.get(0).size(); n++ )
if (!CollectionUtils.isEmpty(data)) {
cellStyleList.clear();
// 首列居中, 其他列红色居右// 首列居中, 其他列蓝色居右// 首列居中, 其他列黑色居右
List<XSSFCellStyle> redStyleList = new ArrayList<>();
List<XSSFCellStyle> blueStyleList = new ArrayList<>();
List<XSSFCellStyle> blackStyleList = new ArrayList<>();
redStyleList.add(centerStyle);
blueStyleList.add(centerStyle);
blackStyleList.add(centerStyle);
// 前两列居中, 其他列红色居右// 前两列居中, 其他列蓝色居右// 前两列居中, 其他列黑色居右
List<XSSFCellStyle> redRowStyleList = new ArrayList<>();
List<XSSFCellStyle> blueRowStyleList = new ArrayList<>();
List<XSSFCellStyle> blackRowStyleList = new ArrayList<>();
redRowStyleList.addAll(Arrays.asList(centerStyle, centerStyle));
blueRowStyleList.addAll(Arrays.asList(centerStyle, centerStyle));
blackRowStyleList.addAll(Arrays.asList(centerStyle, centerStyle));
for (int n = 1; n < headerDataList.get(0).size(); n++ ) {
// 标题行样式
redStyleList.add(redStyle);
redRowStyleList.add(redStyle);
blueStyleList.add(blueStyle);
blueRowStyleList.add(blueStyle);
blackStyleList.add(rightStyle);
blackRowStyleList.add(rightStyle);
}
//当前页总行数
Integer totalRowNum = data.size() - (i + headerDataListSize) * sheetSize >= 0 ? sheetSize : data.size() - sheetSize * i;
/*创建新的单元格范围。索引从零开始。
firstRow - 第一行索引
lastRow - 最后一行（包括）的索引必须等于或大于 firstRow
firstCol - 第一列索引
lastCol - 最后一列（包括）的索引必须等于或大于 firstCol*/
for (int j = 0; j < totalRowNum; j++) {
switch ((j + 1) % 3) {
case 0:
// j + 1 是考虑表头行数
// 下标0-n, 从1开始, 每3 个合并
sheet.addMergedRegion(new CellRangeAddress(j-1,j+1,0,0));
sheet.addMergedRegion(new CellRangeAddress(j-1,j+1,1,1));
writeRowDataFor2007(sheet, headerData, data, workBook, j + headerDataListSize, i * sheetSize + j, blueRowStyleList);
break;
case 1:
writeRowDataFor2007(sheet, headerData, data, workBook, j + headerDataListSize, i * sheetSize + j, blackRowStyleList);
break;
case 2:
writeRowDataFor2007(sheet, headerData, data, workBook, j + headerDataListSize, i * sheetSize + j, redRowStyleList);
break;
default:
break;
}
}
}
}
}
/**
* 写入行数据-适用2007及以上
*
* @param sheet 当前sheet页对象
* @param titleMap 标题数据
* titleMap映射data, 来使行数据的列对应标题列
* @param data 数据
* @param rowNum 行号
* @param startIndex 数据项指标项
* @param cellStyleList 每行的单元格样式集合
*/
public static void writeRowDataFor2007(XSSFSheet sheet, LinkedHashMap titleMap, List<LinkedHashMap<String, Object>> data, XSSFWorkbook workBook, Integer rowNum, Integer startIndex, List<XSSFCellStyle> cellStyleList) {
// 创建Excel 行
XSSFRow rowTemp = sheet.createRow(rowNum);
Map<String, Object> rowData = data.get(startIndex);
if (rowData != null && !rowData.isEmpty()) {
Iterator it = titleMap.keySet().iterator();
int indexIt = 0;
while (it.hasNext()) {
// 创建单元格
XSSFCell dataCell = rowTemp.createCell(indexIt);
dataCell.setCellValue(String.valueOf(rowData.get(it.next())));
// 设置单元格样式
dataCell.setCellStyle(cellStyleList.get(indexIt));
indexIt++;
}
}
}
THE END
