Apache POI SpreadSheet的一些简单应用。

代码如下:

import java.io.FileOutputStream;

import java.sql.Connection;

import java.sql.DriverManager;

import java.sql.PreparedStatement;

import java.sql.ResultSet;

import java.util.ArrayList;

import java.util.HashMap;

import java.util.Iterator;

import java.util.List;

import java.util.Map;

import org.apache.poi.hssf.usermodel.HSSFCell;

import org.apache.poi.hssf.usermodel.HSSFCellStyle;

import org.apache.poi.hssf.usermodel.HSSFFont;

import org.apache.poi.hssf.usermodel.HSSFRichTextString;

import org.apache.poi.hssf.usermodel.HSSFRow;

import org.apache.poi.hssf.usermodel.HSSFSheet;

import org.apache.poi.hssf.usermodel.HSSFWorkbook;

import org.apache.poi.hssf.util.HSSFColor;

/**

*

*

* 主要是将一些数据组织成二维表以便汇总

*

* 如:

*

* 战略1战略2战略3

*

* 项目1202030

* 项目2301540

* ...

*

*/

public class XZou {

static Connection con = null;

static {

try {

Class.forName("com.mysql.jdbc.Driver");

con = DriverManager

.getConnection(

"jdbc:mysql://localhost:3306/test?useUnicode=true&characterEncoding=utf-8",

"root", "root");

PreparedStatement pst = con.prepareStatement("drop table if exists project;");

pst.execute();

pst = con.prepareStatement("create table project (pro varchar(20) not null comment '项目名称',sta varchar(20) not null comment '战略名称',mark float comment '值');");

pst.execute();

pst = con.prepareStatement("insert into project (pro,sta,mark) values (?,?,?)");

///

pst.setString(1, "项目1"); pst.setString(2, "战略1"); pst.setFloat(3, 30.0f);

pst.addBatch();

pst.setString(1, "项目1"); pst.setString(2, "战略2"); pst.setFloat(3, 40.0f);

pst.addBatch();

pst.setString(1, "项目1"); pst.setString(2, "战略3"); pst.setFloat(3, 50.0f);

pst.addBatch();

pst.setString(1, "项目2"); pst.setString(2, "战略1"); pst.setFloat(3, 40.0f);

pst.addBatch();

pst.setString(1, "项目2"); pst.setString(2, "战略2"); pst.setFloat(3, 50.0f);

pst.addBatch();

pst.setString(1, "项目2"); pst.setString(2, "战略3"); pst.setFloat(3, 60.0f);

pst.addBatch();

pst.setString(1, "项目2"); pst.setString(2, "战略4"); pst.setFloat(3, 40.0f);

pst.addBatch();

pst.setString(1, "项目3"); pst.setString(2, "战略1"); pst.setFloat(3, 50.0f);

pst.addBatch();

pst.setString(1, "项目3"); pst.setString(2, "战略2"); pst.setFloat(3, 40.0f);

pst.addBatch();

pst.setString(1, "项目3"); pst.setString(2, "战略4"); pst.setFloat(3, 30.0f);

pst.addBatch();

pst.setString(1, "项目4"); pst.setString(2, "战略1"); pst.setFloat(3, 50.0f);

pst.addBatch();

pst.setString(1, "项目4"); pst.setString(2, "战略2"); pst.setFloat(3, 20.50f);

pst.addBatch();

pst.setString(1, "项目4"); pst.setString(2, "战略3"); pst.setFloat(3, 30.0f);

pst.addBatch();

pst.setString(1, "项目4"); pst.setString(2, "战略4"); pst.setFloat(3, 90.0f);

pst.addBatch();

pst.setString(1, "项目5"); pst.setString(2, "战略1"); pst.setFloat(3, 40.0f);

pst.addBatch();

pst.setString(1, "项目5"); pst.setString(2, "战略3"); pst.setFloat(3, 30.0f);

pst.addBatch();

pst.setString(1, "项目5"); pst.setString(2, "战略4"); pst.setFloat(3, 30.0f);

pst.addBatch();

pst.executeBatch();

} catch (Exception ex) {

throw new ExceptionInInitializerError(ex);

}

}

public static void main(String[] args) throws Exception {

int startRow = 8, startCell = 6;

List xList = new ArrayList();

PreparedStatement pst = con.prepareStatement("select pro from project group by pro");

ResultSet rs = pst.executeQuery();

while(rs.next()){

xList.add(new X(rs.getString(1)));

}

Map yMap = new HashMap();

pst = con.prepareStatement("select sta from project group by sta");

rs = pst.executeQuery();

int tempStartCell = startCell;

while(rs.next()){

yMap.put(rs.getString(1), ++tempStartCell);

}

pst = con.prepareStatement("select pro,sta,mark from project group by pro,sta");

rs = pst.executeQuery();

while(rs.next()){

for(X x: xList){

if(x.getName().equals(rs.getString(1))){

x.getYList().add(new Y(rs.getString(2),rs.getFloat(3)));

}

}

}

rs.close();

pst.close();

HSSFWorkbook wb = new HSSFWorkbook();

HSSFSheet sheet = wb.createSheet("测试");

HSSFCellStyle style = wb.createCellStyle();

HSSFFont font = wb.createFont();

font.setColor(HSSFColor.RED.index);

style.setAlignment(HSSFCellStyle.ALIGN_CENTER);//居中现实

style.setFont(font);//设置颜色

HSSFRow xRow = sheet.createRow(startRow - 1);//确立X，所有列

for(Iterator> it = yMap.entrySet().iterator(); it.hasNext(); ){

Map.Entry map = it.next();

HSSFCell cell = xRow.createCell(map.getValue());

cell.setCellStyle(style);

cell.setCellValue(new HSSFRichTextString(map.getKey()));

}

for(int i = 0; i

X x = xList.get(i);

HSSFRow row = sheet.createRow(startRow + i);//创建行

HSSFCell cell = row.createCell(startCell);

cell.setCellStyle(style);

cell.setCellValue(new HSSFRichTextString(x.getName()));

for(int j = 0; j

Y y = x.getYList().get(j);

cell = row.createCell(yMap.get(y.getName()));

cell.setCellStyle(style);

cell.setCellValue(y.getValue());

}

}

wb.write(new FileOutputStream("c:/wd.xls"));//写一个excel文件

}

}

/**

* X 项目

*/

class X{

private String name;//项目名称

private List yList = new ArrayList();//项目对应的所有的战略集合

public X(){

}

public X(String name){

this.name = name;

}

public String getName() {

return name;

}

public void setName(String name) {

this.name = name;

}

public List getYList() {

return yList;

}

public void setYList(List list) {

yList = list;

}

}

/**

* 战略

*/

class Y{

private String name;//战略名称

private float value;//项目名称关联战略名称对应的mark值

public Y(String name,float value){

this.name = name;

this.value = value;

}

public String getName() {

return name;

}

public void setName(String name) {

this.name = name;

}

public float getValue() {

return value;

}

public void setValue(float value) {

this.value = value;

}

}

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2009-12-08 21:39

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