binbinyang博客----关于Android数据库导出到Excel
来源：程序员人生 发布时间：2016-07-26 13:44:48 阅读次数：3384次
可能很多做JAVAWEB 或是C#的工程师。在项目特别是OA项目中，会用到POI。。。也就是excel的导入导出。。。恰好今天在研究安卓APP中，把数据填入到EditText中，然后自动保存数据到excel里面---------------用到了Sqlite及导出到Excel文件
1.首先里面要导入1个包。叫做JXL
<span style="font-size:18px;">Jxl使用总结
Jxl是1个开源的Java Excel API项目，通过Jxl，Java可以很方便的操作微软的Excel文档。除Jxl以外，还有Apache的1个POI项目，也能够操作Excel，二者相比之下：Jxl使用方便，但功能相对POI比较弱。POI使用复杂，上手慢，除这个没啥说的了。</span>
1.1
API总结
1、创建或读取1个工作薄 Workbook
创建1个工作薄，就是全部Excel文档，
WritableWorkbook wwb = Workbook.createWorkbook(os);
其中os为1个文件输出流。固然还有很多其他的入参，比如File等。
Workbook不但能用来创建工作薄，也能够读取现有的工作薄，比如：
Workbook.getWorkbook(java.io.File file);
Workbook是1个很重要工具类，里面方法基本上都是static的，使用方便。
2、创建工作表 Sheet
创建工作表的方式是通过上面创建的WritableWorkbook对象来操作。
创建1个工作表：
createSheet(java.lang.String name, int index)，
两个参数分别是工作表名字和插入位置，这个位置从0开始，比如：
WritableSheet sheet = wwb.createSheet("演员表", 0);
3、创建标签 Label
实际上标签这里的意思就是工作表的单元格，这个单元格多种，分别对应不同的类，比如jxl.write.Boolean、jxl.write.Boolean等。
Label label = new Label(col, row, title);
3个参数分别表示col+1列，row+1行，标题内容是title。
将标签加入到工作表中
sheet.addCell(label);
4、填充数据
数据填充这块略微复杂点，触及到数据单元格的格式问题。
a）、填充数字
jxl.write.Number numb = new jxl.write.Number(1, 1, 250);
sheet.addCell(numb);
b）、填充格式化的数字
jxl.write.NumberFormat nf = new jxl.write.NumberFormat("#.##");
jxl.write.WritableCellFormat wcf = new jxl.write.WritableCellFormat(nf);
jxl.write.Number n = new jxl.write.Number(2, 1, 2.451, wcf);
sheet.addCell(n);
c）、填充日期
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd hh:mm:ss");
String newdate = sdf.format(new Date());
label = new Label(2, 2, newdate);
sheet.addCell(label);
d）、填充文本
label = new Label(3, 3, "周星驰");
sheet.addCell(label);
e）、填充boolean值
jxl.write.Boolean bool = new jxl.write.Boolean(4, 1, true);
sheet.addCell(bool);
5、合并单元格
通过writablesheet.mergeCells(int x,int y,int m,int n);来实现的。
表示将从第x+1列，y+1行到m+1列，n+1行合并 (4个点定义了两个坐标，左上角和右下角)
结果是合并了m-x+1行，n-y+1列，二者乘积就是合并的单元格数量。
sheet.mergeCells(0, 6, 3, 8);
label = new Label(0, 6, "合并了12个单元格");
sheet.addCell(label);
6、添加单元格的式样
主要是改变单元格背景、字体、色彩等等。
WritableCellFormat wc = new WritableCellFormat();
// 设置居中
wc.setAlignment(Alignment.CENTRE);
// 设置边框线
wc.setBorder(Border.ALL, BorderLineStyle.THIN);
// 设置单元格的背景色彩
wc.setBackground(jxl.format.Colour.RED);
label = new Label(1, 5, "字体", wc);
sheet.addCell(label);
7、设置单元格字体
// 设置字体
jxl.write.WritableFont wfont = new jxl.write.WritableFont(WritableFont.createFont("楷书"), 20);
WritableCellFormat font = new WritableCellFormat(wfont);
label = new Label(2, 6, "楷书", font);
sheet.addCell(label);
8、将工作写成文件
// 写入数据
wwb.write();
// 关闭文件
wwb.close();
9、行列的批量操作
//获得所有的工作表
jxl.write.WritableSheet[] sheetList = wwb.getSheets();
//获得第1列所有的单元格
jxl.Cell[] cellc = sheet.getColumn(0);
//获得第1行所有的单元格
jxl.Cell[] cellr = sheet.getRow(0);
//获得第1行第1列的单元格
Cell c = sheet.getCell(0, 0);
10、获得单元格的值
//获得单元格的值，不管甚么单元格，返回都是字符串
String value = c.getContents();
下面说说重点。。。拿代码来讲。。。。
自己写的1个小小的记帐工具，用到了Sqlite及导出到Excel文件
先说说DB
public class DBHelper extends SQLiteOpenHelper {
public static final String DB_NAME = "ldm_family"; // DB name
private Context mcontext;
private DBHelper mDbHelper;
private SQLiteDatabase db;
public DBHelper(Context context) {
super(context, DB_NAME, null, 11);
this.mcontext = context;
}
public DBHelper(Context context, String name, CursorFactory factory, int version) {
super(context, name, factory, version);
}
/**
* 用户第1次使用软件时调用的操作，用于获得
数据库创建语句（SW）,然后创建
数据库
*/
@Override
public void onCreate(SQLiteDatabase db) {
String sql = "create table if not exists family_bill(id integer primary key,time text,food text,use text,traffic text,travel text,clothes text,doctor text,laiwang text,baby text,live text,other text,remark text)";
db.execSQL(sql);
}
@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
}
/* 打开
数据库,如果已打开就使用，否则创建 */
public DBHelper open() {
if (null == mDbHelper) {
mDbHelper = new DBHelper(mcontext);
}
db = mDbHelper.getWritableDatabase();
return this;
}
/* 关闭
数据库 */
public void close() {
db.close();
mDbHelper.close();
}
/**添加数据 */
public long insert(String tableName, ContentValues values) {
return db.insert(tableName, null, values);
}
/**查询数据*/
public Cursor findList(String tableName, String[] columns, String selection, String[] selectionArgs, String groupBy, String having, String orderBy, String limit) {
return db.query(tableName, columns, selection, selectionArgs, groupBy, having, orderBy, limit);
}
public Cursor exeSql(String sql) {
return db.rawQuery(sql, null);
}
}
<span style="color:#555555;">public class MainActivity extends Activity implements OnClickListener {
private EditText mFoodEdt;
private EditText mArticlesEdt;
private EditText mTrafficEdt;
private EditText mTravelEdt;
private EditText mClothesEdt;
private EditText mDoctorEdt;
private EditText mRenQingEdt;
private EditText mBabyEdt;
private EditText mLiveEdt;
private EditText mOtherEdt;
private EditText mRemarkEdt;
private Button mSaveBtn;
private File file;
private String[] title = { "日期", "食品支出", "大保健费", "交通话费", "旅游出行", "穿着支出", "医疗保健", "人情客往", "宝宝专项", "房租水电", "其它支出", "备注说明" };
private String[] saveData;
private DBHelper mDbHelper;
private ArrayList<ArrayList<String>>bill2List;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
findViewsById();
mDbHelper = new DBHelper(this);
mDbHelper.open();
bill2List=new ArrayList<ArrayList<String>>();
}
/**
* 声明VIEW
*/
private void findViewsById() {
mFoodEdt = (EditText) findViewById(R.id.family_bill_food_edt);
mArticlesEdt = (EditText) findViewById(R.id.family_bill_articles_edt);
mTrafficEdt = (EditText) findViewById(R.id.family_bill_traffic_edt);
mTravelEdt = (EditText) findViewById(R.id.family_bill_travel_edt);
mClothesEdt = (EditText) findViewById(R.id.family_bill_clothes_edt);
mDoctorEdt = (EditText) findViewById(R.id.family_bill_doctor_edt);
mRenQingEdt = (EditText) findViewById(R.id.family_bill_laiwang_edt);
mBabyEdt = (EditText) findViewById(R.id.family_bill_baby_edt);
mLiveEdt = (EditText) findViewById(R.id.family_bill_live_edt);
mOtherEdt = (EditText) findViewById(R.id.family_bill_other_edt);
mRemarkEdt = (EditText) findViewById(R.id.family_bill_remark_edt);
mSaveBtn = (Button) findViewById(R.id.family_bill_save);
mSaveBtn.setOnClickListener(this);
}
/**
* 点击事件
*/
@Override
public void onClick(View v)
</span>
关于EXCEL 部份
CreateExcel
public class CreateExcel {
// 准备设置excel工作表的标题
private WritableSheet sheet;
/**创建Excel工作薄*/
private WritableWorkbook wwb;
private String[] title = { "日期", "食品支出", "大保健费", "交通话费", "旅游出行", "穿着支出", "医疗保健", "人情客往", "宝宝专项", "房租水电", "其它支出", "备注说明" };
public CreateExcel() {
excelCreate();
}
public void excelCreate() {
try {
/**输出的excel文件的路径*/
String filePath = Environment.getExternalStorageDirectory() + "/family_bill";
File file = new File(filePath, "bill.xls");
if (!file.exists()) {
file.createNewFile();
}
wwb = Workbook.createWorkbook(file);
/**添加第1个工作表并设置第1个Sheet的名字*/
sheet = wwb.createSheet("家庭帐务表", 0);
}
catch (Exception e) {
e.printStackTrace();
}
}
public void saveDataToExcel(int index, String[] content) throws Exception {
Label label;
for (int i = 0; i < title.length; i++) {
/**Label(x,y,z)其中x代表单元格的第x+1列，第y+1行, 单元格的内容是y
* 在Label对象的子对象中指明单元格的位置和内容
* */
label = new Label(i, 0, title[i]);
/**将定义好的单元格添加到工作表中*/
sheet.addCell(label);
}
/*
* 把数据填充到单元格中
* 需要使用jxl.write.Number
* 路径必须使用其完全路径，否则会出现毛病
*/
for (int i = 0; i < title.length; i++) {
Label labeli = new Label(i, index, content[i]);
sheet.addCell(labeli);
}
// 写入数据
wwb.write();
// 关闭文件
wwb.close();
}
}
ExcelUtils
public class ExcelUtils {
public static WritableFont arial14font = null;
public static WritableCellFormat arial14format = null;
public static WritableFont arial10font = null;
public static WritableCellFormat arial10format = null;
public static WritableFont arial12font = null;
public static WritableCellFormat arial12format = null;
public final static String UTF8_ENCODING = "UTF⑻";
public final static String GBK_ENCODING = "GBK";
public static void format() {
try {
arial14font = new WritableFont(WritableFont.ARIAL, 14, WritableFont.BOLD);
arial14font.setColour(jxl.format.Colour.LIGHT_BLUE);
arial14format = new WritableCellFormat(arial14font);
arial14format.setAlignment(jxl.format.Alignment.CENTRE);
arial14format.setBorder(jxl.format.Border.ALL, jxl.format.BorderLineStyle.THIN);
arial14format.setBackground(jxl.format.Colour.VERY_LIGHT_YELLOW);
arial10font = new WritableFont(WritableFont.ARIAL, 10, WritableFont.BOLD);
arial10format = new WritableCellFormat(arial10font);
arial10format.setAlignment(jxl.format.Alignment.CENTRE);
arial10format.setBorder(jxl.format.Border.ALL, jxl.format.BorderLineStyle.THIN);
arial10format.setBackground(jxl.format.Colour.LIGHT_BLUE);
arial12font = new WritableFont(WritableFont.ARIAL, 12);
arial12format = new WritableCellFormat(arial12font);
arial12format.setBorder(jxl.format.Border.ALL, jxl.format.BorderLineStyle.THIN);
}
catch (WriteException e) {
e.printStackTrace();
}
}
public static void initExcel(String fileName, String[] colName) {
format();
WritableWorkbook workbook = null;
try {
File file = new File(fileName);
if (!file.exists()) {
file.createNewFile();
}
workbook = Workbook.createWorkbook(file);
WritableSheet sheet = workbook.createSheet("家庭帐务表", 0);
sheet.addCell((WritableCell) new Label(0, 0, fileName, arial14format));
for (int col = 0; col < colName.length; col++) {
sheet.addCell(new Label(col, 0, colName[col], arial10format));
}
workbook.write();
}
catch (Exception e) {
e.printStackTrace();
}
finally {
if (workbook != null) {
try {
workbook.close();
}
catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
}
@SuppressWarnings("unchecked")
public static <T> void writeObjListToExcel(List<T> objList, String fileName, Context c) {
if (objList != null && objList.size() > 0) {
WritableWorkbook writebook = null;
InputStream in = null;
try {
WorkbookSettings setEncode = new WorkbookSettings();
setEncode.setEncoding(UTF8_ENCODING);
in = new FileInputStream(new File(fileName));
Workbook workbook = Workbook.getWorkbook(in);
writebook = Workbook.createWorkbook(new File(fileName), workbook);
WritableSheet sheet = writebook.getSheet(0);
for (int j = 0; j < objList.size(); j++) {
ArrayList<String> list=(ArrayList<String>) objList.get(j);
for (int i = 0; i < list.size(); i++) {
sheet.addCell(new Label(i, j+1, list.get(i), arial12format));
}
}
writebook.write();
Toast.makeText(c, "保存成功", Toast.LENGTH_SHORT).show();
}
catch (Exception e) {
e.printStackTrace();
}
finally {
if (writebook != null) {
try {
writebook.close();
}
catch (Exception e) {
e.printStackTrace();
}
}
if (in != null) {
try {
in.close();
}
catch (IOException e) {
e.printStackTrace();
}
}
}
}
}
public static Object getValueByRef(Class cls, String fieldName) {
Object value = null;
fieldName = fieldName.replaceFirst(fieldName.substring(0, 1), fieldName.substring(0, 1).toUpperCase());
String getMethodName = "get" + fieldName;
try {
Method method = cls.getMethod(getMethodName);
value = method.invoke(cls);
}
catch (Exception e) {
e.printStackTrace();
}
return value;
}
}
SaveToExcel
<span style="font-size:14px;">public class SaveToExcel {
static HashMap map = new HashMap();
/*
* 这个更全
*/
public static void main(String[] args) {
try {
// copyDateFormat(new File("c:\\a.xls"), 0, "c:\\copy of a.xls");
writeExcelUseFormat("c:\\format.xls", "test");
// buildNewFormTemplete(new File("c:/templete.xls"),new File(
// "c:/buildNewFormTemplete.xls"));
// modifyDirectly1(new File("c:/templete.xls"));
// modifyDirectly2(new File("c:/templete.xls"));
// copyDateAndFormat(new File("c:/a.xls"), 0, "c:/a2.xls");
}
catch (Exception e) {
// TODO 自动生成 catch 块
e.printStackTrace();
}
}
public static void modifyDirectly2(File inputFile) throws Exception {
Workbook w1 = Workbook.getWorkbook(inputFile);
WritableWorkbook w2 = Workbook.createWorkbook(inputFile, w1);
WritableSheet sheet = w2.getSheet(0);
WritableCell cell = null;
CellFormat cf = null;
// 加粗
cell = sheet.getWritableCell(0, 0);
WritableFont bold = new WritableFont(WritableFont.ARIAL, WritableFont.DEFAULT_POINT_SIZE, WritableFont.BOLD);
cf = new WritableCellFormat(bold);
cell.setCellFormat(cf);
// 设置下划线
cell = sheet.getWritableCell(0, 1);
WritableFont underline = new WritableFont(WritableFont.ARIAL, WritableFont.DEFAULT_POINT_SIZE, WritableFont.NO_BOLD, false, UnderlineStyle.SINGLE);
cf = new WritableCellFormat(underline);
cell.setCellFormat(cf);
// 直截添加可以覆盖掉
setCellValueDirectly(sheet, sheet.getCell(0, 2), new Double(4), CellType.NUMBER);
w2.write();
w2.close();
}
public static void modifyDirectly1(File file) {
try {
// Excel取得文件
Workbook wb = Workbook.getWorkbook(file);
// 打开1个文件的副本，并且指定数据写回到原文件
WritableWorkbook book = Workbook.createWorkbook(file, wb);
WritableSheet sheet0 = book.getSheet(0);
sheet0.addCell(new Label(0, 1, "陈小稳"));
// 添加1个工作表
WritableSheet sheet = book.createSheet(" 第2页 ", 1);
sheet.addCell(new Label(0, 0, " 第2页的测试数据 "));
book.write();
book.close();
}
catch (Exception e) {
System.out.println(e);
}
}
public static void buildNewFormTemplete(File inputFile, File outputFile) {
try {
// Excel取得文件
Workbook wb = Workbook.getWorkbook(inputFile);
// 打开1个文件的副本，并且指定数据写回到原文件
WritableWorkbook book = Workbook.createWorkbook(outputFile, wb);
WritableSheet sheet0 = book.getSheet(0);
sheet0.addCell(new Label(0, 1, "陈小稳"));
// 添加1个工作表
WritableSheet sheet = book.createSheet(" 第2页 ", 1);
sheet.addCell(new Label(0, 0, " 第2页的测试数据 "));
book.write();
book.close();
}
catch (Exception e) {
System.out.println(e);
}
}
public static void copyDateAndFormat(File inputFile, int inputFileSheetIndex, String outputFilePath) throws Exception {
Workbook book = null;
Cell cell = null;
// 1.避免乱码的设置
WorkbookSettings setting = new WorkbookSettings();
java.util.Locale locale = new java.util.Locale("zh", "CN");
setting.setLocale(locale);
setting.setEncoding("ISO⑻859⑴");
book = Workbook.getWorkbook(inputFile, setting);
Sheet readonlySheet = book.getSheet(inputFileSheetIndex);
OutputStream os = new FileOutputStream(outputFilePath);// 输出的Excel文件URL
WritableWorkbook wwb = Workbook.createWorkbook(os);// 创建可写工作薄
WritableSheet writableSheet = wwb.createSheet(readonlySheet.getName(), 0);// 创建可写工作表
// 2.誊写不同数据格式的数据
for (int rowIndex = 0; rowIndex < readonlySheet.getRows(); rowIndex++) {
for (int colIndex = 0; colIndex < readonlySheet.getColumns(); colIndex++) {
cell = readonlySheet.getCell(colIndex, rowIndex);
// A2B2为合并的单元格，A2有内容，B2为空
// if(colIndex == 0 && rowIndex == 1){
// System.out.println(colIndex + "," + rowIndex + " type:" +
// cell.getType() +" :" + cell.getContents());
// }
// 【有各种设置格式】
if (cell.getType() == CellType.DATE || cell.getType() == CellType.DATE_FORMULA) {
writableSheet.addCell(new jxl.write.DateTime(colIndex, rowIndex, ((DateCell) cell).getDate(), new jxl.write.WritableCellFormat(cell.getCellFormat())));
}
else if (cell.getType() == CellType.NUMBER || cell.getType() == CellType.NUMBER_FORMULA) {
writableSheet.addCell(new jxl.write.Number(colIndex, rowIndex, ((jxl.NumberCell) cell).getValue(), new jxl.write.WritableCellFormat(cell.getCellFormat())));
}
else if (cell.getType() == CellType.EMPTY) {
// 空的和合并单元格中第1列外的
// System.out.println("EMPTY:"+cell.getContents());
// System.err.println("空单元格 at " + colIndex + "," + rowIndex
// +" content:" + cell.getContents());
}
else if (cell.getType() == CellType.LABEL || cell.getType() == CellType.STRING_FORMULA) {
writableSheet.addCell(new Label(colIndex, rowIndex, cell.getContents(), new jxl.write.WritableCellFormat(cell.getCellFormat())));
}
else {
System.err.println("其它单元格类型：" + cell.getType() + " at " + colIndex + "," + rowIndex + " content:" + cell.getContents());
}
// if(cell.getType() == CellType.STRING_FORMULA){
// System.err.println(colIndex + "," + rowIndex +":" +
// cell.getContents() +" type:" + cell.getType());
// }
}
}
// 3.处理合并单元格的事情(复制合并单元格格式)
Range[] range = readonlySheet.getMergedCells();
for (int i = 0; i < range.length; i++) {
// System.out.println("第"+i+"处合并的单元格:"
// +",getTopLeft="+range[i].getTopLeft().getColumn()
// +","+range[i].getTopLeft().getRow()
// +",getBottomRight="+range[i].getBottomRight().getColumn()
// +","+range[i].getBottomRight().getRow()
// );
// topleftXIndex, topleftYIndex, bottomRightXIndex,
// bottomRightYIndex
writableSheet.mergeCells(range[i].getTopLeft().getColumn(), range[i].getTopLeft().getRow(), range[i].getBottomRight().getColumn(), range[i].getBottomRight().getRow());
}
// 4.设置行列高宽
for (int colIndex = 0; colIndex < readonlySheet.getColumns(); colIndex++) {
writableSheet.setColumnView(colIndex, readonlySheet.getColumnView(colIndex));
}
for (int rowIndex = 0; rowIndex < readonlySheet.getRows(); rowIndex++) {
writableSheet.setRowView(rowIndex, readonlySheet.getRowView(rowIndex));
}
wwb.write();
wwb.close();
os.close();
}
public static void writeExcelUseFormat(String outputFilePath, String outputFileSheetName) throws Exception {
OutputStream os = new FileOutputStream(outputFilePath);// 输出的Excel文件URL
WritableWorkbook wwb = Workbook.createWorkbook(os);// 创建可写工作薄
WritableSheet sheet = wwb.createSheet(outputFileSheetName, 0);// 创建可写工作表
sheet.addCell(new Label(0, 0, "号码"));
sheet.addCell(new Label(1, 0, "有效期"));
// 1.写入时间的数据格式
jxl.write.DateFormat df = new jxl.write.DateFormat("yyyy-MM-dd");
jxl.write.WritableCellFormat wcfDF = new jxl.write.WritableCellFormat(df);
jxl.write.DateTime labelDTF = new jxl.write.DateTime(1, 1, new Date(), wcfDF); // 自定义格式
sheet.addCell(labelDTF);
// 2.字体样式
// WritableFont()方法里参数说明：
// 这个方法算是1个容器，可以放进去好多属性
// 第1个: TIMES是字体大小，他写的是18
// 第2个: BOLD是判断是不是为斜体,选择true时为斜体
// 第3个: ARIAL
// 第4个: UnderlineStyle.NO_UNDERLINE 下划线
// 第5个: jxl.format.Colour.RED 字体色彩是红色的
jxl.write.WritableFont wf = new jxl.write.WritableFont(WritableFont.TIMES, 18, WritableFont.BOLD, true);
jxl.write.WritableCellFormat wcfF = new jxl.write.WritableCellFormat(wf);
wcfF.setWrap(true);// 自动换行
wcfF.setAlignment(jxl.format.Alignment.CENTRE);// 把水平对齐方式指定为居中
wcfF.setVerticalAlignment(jxl.format.VerticalAlignment.CENTRE);// 把垂直对齐方式指定为居中
jxl.write.Label labelC = new jxl.write.Label(0, 1, "This is a Label cell", wcfF);
sheet.addCell(labelC);
// 3.添加带有formatting的Number对象
jxl.write.NumberFormat nf = new jxl.write.NumberFormat("#.##");
jxl.write.WritableCellFormat wcfN = new jxl.write.WritableCellFormat(nf);
jxl.write.Number labelNF = new jxl.write.Number(0, 2, 3.1415926, wcfN);
sheet.addCell(labelNF);
// 4.添加Boolean对象
jxl.write.Boolean labelB = new jxl.write.Boolean(0, 3, false);
sheet.addCell(labelB);
// 5.设置1个注解
WritableCellFeatures cellFeatures = new WritableCellFeatures();
cellFeatures.setComment("添加Boolean对象");
labelB.setCellFeatures(cellFeatures);
// 6.单元格内换行
WritableCellFormat wrappedText = new WritableCellFormat(WritableWorkbook.ARIAL_10_PT);
wrappedText.setWrap(true);// 可换行的label样式
Label label = new Label(4, 0, "测试,\012测试。。。", wrappedText); // "\012"强迫换行
sheet.addCell(label);
// 7.数字的公式计算
jxl.write.Number n = new jxl.write.Number(0, 9, 4.5);// A10
sheet.addCell(n);
n = new jxl.write.Number(1, 9, 8);// B10
sheet.addCell(n);
NumberFormat dp3 = new NumberFormat("#.###"); // 设置单元格里面的数字格式
WritableCellFormat dp3cell = new WritableCellFormat(dp3);
dp3cell.setWrap(true);
Formula f = new Formula(2, 9, "(a10+b10)/2", dp3cell); // 设置C10公式
sheet.addCell(f);
f = new Formula(3, 9, "SUM(A10:B10)", dp3cell);// 设置D10公式
sheet.addCell(f);
// 8.设置sheet的样式
sheet.getSettings().setProtected(true); // 设置xls的保护，单元格为只读的
sheet.getSettings().setPassword("123"); // 设置xls的密码
sheet.getSettings().setDefaultColumnWidth(10); // 设置列的默许宽度,2cm左右
sheet.setRowView(3, 200);// 设置第4行高度
sheet.setRowView(2, false);// 这样可以自动把行高扩大
sheet.setColumnView(0, 300);// 设置第1列宽度，6cm左右
sheet.mergeCells(0, 5, 1, 7);// 合并单元格：合并A6B8也就是1列6行 与 2列7行之间的矩形
// 9.设置边框
drawRect(sheet, 5, 6, 7, 6, BorderLineStyle.THICK, Colour.BLACK, null);
sheet.mergeCells(1, 2, 3, 3);
wwb.write();
wwb.close();
os.close();
}
public static void drawRect(WritableSheet sheet, int x, int y, int width, int height, BorderLineStyle style, Colour BorderColor, Colour bgColor) throws WriteException {
for (int w = 0; w < width; w++) {
for (int h = 0; h < height; h++) {
WritableCellFormat alignStyle = new WritableCellFormat(); // 单元格样式
alignStyle.setAlignment(Alignment.CENTRE); // 设置对齐方式
alignStyle.setVerticalAlignment(VerticalAlignment.CENTRE);// 设置对齐方式
if (h == 0) // 画上
alignStyle.setBorder(Border.TOP, style, BorderColor);// 设置边框的色彩和样式
if (w == 0) // 画左
alignStyle.setBorder(Border.LEFT, style, BorderColor);// 设置边框的色彩和样式
if (w == width - 1) // 画右
alignStyle.setBorder(Border.RIGHT, style, BorderColor);// 设置边框的色彩和样式
if (h == height - 1) // 画下
alignStyle.setBorder(Border.BOTTOM, style, BorderColor);// 设置边框的色彩和样式
// drawLine(sheet, x, y, Border.BOTTOM);
if (bgColor != null) alignStyle.setBackground(bgColor); // 背静色
Label mergelabel = new Label(x, y, "", alignStyle);
// topleftXIndex, topleftYIndex, bottomRightXIndex,
// bottomRightYIndex
// sheet.mergeCells(2, 5, 10, 10);
sheet.addCell(mergelabel);
y++;
}
y -= height;
x++;
}
}
public static ArrayList<String> sampleReadExcel(File inputFile, int inputFileSheetIndex) throws Exception {
ArrayList<String> list = new ArrayList<String>();
Workbook book = null;
Cell cell = null;
// 避免乱码的设置
WorkbookSettings setting = new WorkbookSettings();
java.util.Locale locale = new java.util.Locale("zh", "CN");
setting.setLocale(locale);
setting.setEncoding("ISO⑻859⑴");
book = Workbook.getWorkbook(inputFile, setting);
Sheet sheet = book.getSheet(inputFileSheetIndex);
for (int rowIndex = 0; rowIndex < sheet.getRows(); rowIndex++) {// Excel第1行动表头,因此J初值设为1
for (int colIndex = 0; colIndex < sheet.getColumns(); colIndex++) {// 只需从Excel中取出2列
cell = sheet.getCell(colIndex, rowIndex);
list.add(cell.getContents());
}
}
// 【问题：如果在实际部署的时候没有写下面这句是不是会致使不断消耗掉
服务器的内存？jxl里面有个ReadWrite.java没有关闭读的，只关闭了写的】
book.close();
return list;
}
public static void setCellValueDirectly(WritableSheet sheet, Cell cell, Object newValue, CellType type) throws Exception {
if (type == CellType.DATE || type == CellType.DATE_FORMULA) {
sheet.addCell(new jxl.write.DateTime(cell.getColumn(), cell.getRow(), (Date) newValue, new jxl.write.WritableCellFormat(cell.getCellFormat())));
}
else if (type == CellType.NUMBER || type == CellType.NUMBER_FORMULA) {
sheet.addCell(new jxl.write.Number(cell.getColumn(), cell.getRow(), ((Double) newValue).doubleValue(), new jxl.write.WritableCellFormat(cell.getCellFormat())));
}
else if (type == CellType.LABEL || type == CellType.STRING_FORMULA) {
sheet.addCell(new Label(cell.getColumn(), cell.getRow(), (String) newValue, new jxl.write.WritableCellFormat(cell.getCellFormat())));
}
else {
throw new Exception("不支持的其它单元格类型：" + type);
// System.err.println("不支持的其它单元格类型：" + cell.getType() + " at " +
// cell.getColumn() + "," + cell.getRow() +" current content:" +
// cell.getContents());
}
}
}</span><span style="font-size:24px;">
</span>
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