Java将数据按列写入Excel并设置格式（字体、背景色、自动列宽、对齐方式等）

本文使用jxl.jar工具类库将数据按列写入Excel并设置格式（字体、背景色、自动列宽、对齐方式等）。

/**
* 按列写入Excel并设置格式
*
* @param outputUrl
*            输出路径
* @param sheetName
*            工作薄名称
* @param titles
*            表头
* @param arrayList
*            表头数据
* @throws IOException
* @throws RowsExceededException
* @throws WriteException
*/
public static void writeExcel(String outputUrl, String sheetName, String[] titlesArray,
ArrayList<String>... arrayList) throws IOException, RowsExceededException, WriteException {
if (outputUrl == null || outputUrl.length() == 0) {
System.out.println(
"Param(s) Error:outputUrl is required and the length of outputUrl is required greater than 0.");
return;
}
int n = arrayList.length;
if (titlesArray.length != n) {
System.out.println("Param(s) Error:the titles' length is hoped to be equal to arrayList's length.");
return;
}
//创建Excel文件
File file = new File(outputUrl);
file.createNewFile();
//创建工作簿
WritableWorkbook workbook = Workbook.createWorkbook(file);
//创建sheet，设置名称为sheetName，默认Sheet1
if (sheetName == null || sheetName.length() == 0) {
sheetName = "Sheet1";
}
WritableSheet sheet = workbook.createSheet(sheetName, 0);
//设置titles
String[] titles = titlesArray;
//设置表头：列名和各种格式
for (int i = 0; i < titles.length; i++) {
WritableFont font = new WritableFont(WritableFont.ARIAL, 10, WritableFont.BOLD);
CellView cellView = new CellView();
cellView.setAutosize(true); //设置自动大小
sheet.setColumnView(i, cellView); //根据内容自动设置列宽
WritableCellFormat format = new WritableCellFormat(font);
format.setAlignment(Alignment.CENTRE); //居中对齐
format.setBackground(Colour.YELLOW); //背景色
format.setBorder(Border.ALL, BorderLineStyle.THICK, Colour.BLACK);//边框
Label label = new Label(i, 0, titles[i], format);
sheet.addCell(label);
}
//写入数据，并设置一些格式
for (int i = 0; i < n; i++) {
for (int j = 0; j < arrayList[i].size(); j++) {
//WritableFont.createFont("宋体")：设置字体为宋体
//10：设置字体大小
//WritableFont.BOLD:设置字体加粗（BOLD：加粗 NO_BOLD：不加粗）
//false：设置非斜体
//UnderlineStyle.NO_UNDERLINE：没有下划线
WritableFont font = new WritableFont(WritableFont.createFont("宋体"), 10, WritableFont.NO_BOLD);
WritableCellFormat format = new WritableCellFormat(font);
Label label = new Label(i, j + 1, arrayList[i].get(j), format);
sheet.addCell(label);
}
}
//写入数据
workbook.write();
//关闭工作簿
workbook.close();
}

测试代码：

public static void main(String[] args) throws Exception {
String txtUrl = "C:\\Users\\Administrator\\Desktop\\匹配.txt";
ArrayList<String> list1 = ExcelReadUtil.readBookName(txtUrl);
ArrayList<String> list2 = ExcelReadUtil.readFilePath(txtUrl);
String[] titles = { "书名", "路径" };
writeExcel("C:\\Users\\Administrator\\Desktop\\匹配.xls", "匹配", titles, list1, list2);
}

测试结果;