POI导出报表 ExcelUtil
import java.io.IOException;
import java.io.OutputStream;
import java.io.UnsupportedEncodingException;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.net.URLEncoder;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.ResultSetMetaData;
import java.sql.SQLException;
import java.util.*;
import javax.servlet.http.HttpServletResponse;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.poi.hssf.usermodel.HSSFCell;
import org.apache.poi.hssf.usermodel.HSSFCellStyle;
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 java.awt.Font;
import java.beans.*;
//import com.yxhc.util.dbUtil.ConnectionUtil ;
/**
* 23. *
*
* @author Great nomandia 24.
*/
public class ExcelUtil {
private static Log log = LogFactory.getLog(ExcelUtil.class);
private static String shtName = "";
//列属性名
private static String[] cNames = null;
//列显示名
private static String[] cLabels = null;
//列
private static List cColumns=null;
//每页显示行数
private static int rpp = 5000;
private static HSSFCellStyle style = null;
/**
* 通过给定的Sql导出Excel文件到Response输出流，需要指定Connection
*
* @param response
* HttpServletResponse Response
* @param conn
* Connection 指定的数据库连接
* @param sqlStr
* String 查询的Sql语句
* @param sheetName
* String 导出的Excel Sheet名称
* @param columnNames
* String[] 导出的 Excel 列名称
* @param rowPerPage
* int 每一个Sheet页的行数
* @throws SQLException
*/
public static void export(HttpServletResponse response, Connection conn,
String sqlStr, String sheetName, String columnNames[],
int rowPerPage) throws SQLException {
PreparedStatement ps = null;
ResultSet rs = null;
ps = conn.prepareStatement(sqlStr);
rs = ps.executeQuery();
ResultSetMetaData rsmd = rs.getMetaData();
if (rowPerPage <= 10000 && rowPerPage >= 1) {
rpp = rowPerPage;
}
if (!"".equals(sheetName) && null != sheetName) {
shtName = sheetName;
} else {
shtName = rsmd.getTableName(0);
}
cNames = getColumnNames(rsmd);
if (null != columnNames) {
cLabels = columnNames; // compare( columnNames ) ;
} else {
cLabels = cNames;
}
HSSFWorkbook wb = new HSSFWorkbook();
style = wb.createCellStyle();
style.setAlignment(HSSFCellStyle.ALIGN_CENTER);
HSSFSheet sheet = createSheet(wb, 1);
setSheetColumnTitle(sheet);
int rowCnt = 0;
int sheetNum = 2;
while (rs.next()) {
if (rowCnt == rpp) {
sheet = createSheet(wb, sheetNum);
setSheetColumnTitle(sheet);
rowCnt = 0;
sheetNum++;
}
HSSFRow row = sheet.createRow(rowCnt + 1);
for (int i = 0; i < cNames.length; i++) {
HSSFCell cell = row.createCell((short) i);
cell.setEncoding(HSSFCell.ENCODING_UTF_16);
String val = rs.getString(cNames[i]);
if (null == val) {
val = "";
}
cell.setCellValue(val.toUpperCase());
}
rowCnt++;
}
try {
OutputStream os = response.getOutputStream();
response.reset();
response.setContentType("application/vnd.ms-excel");
response.setHeader("Content-disposition", "attachment; filename="
+ getFileName(shtName));
wb.write(os);
if (conn != null) {
conn.close();
}
} catch (IOException ex) {
log.info("Export Excel file error ! " + ex.getMessage());
}
}
public static void export(HttpServletResponse response, List list,
String sheetName, Class cls,Map columnNames,
int rowPerPage) {
if (rowPerPage <= 10000 && rowPerPage >= 1) {
rpp = rowPerPage;
}
if (!"".equals(sheetName) && null != sheetName) {
shtName = sheetName;
} else {
shtName = "sheet";
}
HSSFWorkbook wb = new HSSFWorkbook();
style = wb.createCellStyle();
style.setAlignment(HSSFCellStyle.ALIGN_CENTER);
HSSFSheet sheet = createSheet(wb, 1);
int rowCnt = 0;
int sheetNum = 2;
Iterator it=list.iterator();
Iterator columnNamesKey= columnNames.keySet().iterator();
cLabels=new String[columnNames.size()];
cNames=new String[columnNames.size()];
int i=0;
while(columnNamesKey.hasNext()){
String columnName=String.valueOf(columnNamesKey.next());
System.out.println("columnName="+columnName);
cNames[i]=columnName;
cLabels[i]=(String)columnNames.get(columnName);
i++;
}
setSheetColumnTitle(sheet);
while (it.hasNext()) {
if (rowCnt == rpp) {
sheet = createSheet(wb, sheetNum);
setSheetColumnTitle(sheet);
rowCnt = 0;
sheetNum++;
}
HSSFRow row = sheet.createRow(rowCnt + 1);
Object entity=it.next();
for(int j=0;j<cNames.length;j++) {
//String propertyName=(String)columnNamesKey.next();
HSSFCell cell = row.createCell((short) j);
cell.setEncoding(HSSFCell.ENCODING_UTF_16);
String val = (String)getPropertyValue(entity,cNames[j]);
if (null == val) {
val = "";
}
cell.setCellValue(val.toUpperCase());
}
rowCnt++;
}
try {
OutputStream os = response.getOutputStream();
response.reset();
response.setContentType("application/vnd.ms-excel");
response.setHeader("Content-disposition", "attachment; filename="
+ getFileName(shtName));
wb.write(os);
} catch (IOException ex) {
log.info("Export Excel file error ! " + ex.getMessage());
}
}
// 3
public static void export(HttpServletResponse response, List list,
String fileName, String sheetName, String[] columnNames, Map columnLabels,
int rowPerPage) {
if (rowPerPage <= 10000 && rowPerPage >= 1) {
rpp = rowPerPage;
}
if (!"".equals(sheetName) && null != sheetName) {
shtName = sheetName;
} else {
shtName = "sheet";
}
cNames=columnNames;
cLabels=new String[columnNames.length];
for(int i=0;i< columnNames.length;i++){
cLabels[i]=String.valueOf(columnLabels.get(columnNames[i]));
}
HSSFWorkbook wb = new HSSFWorkbook();
style = wb.createCellStyle();
style.setAlignment(HSSFCellStyle.ALIGN_CENTER);
HSSFSheet sheet = createSheet(wb, 1);
int rowCnt = 0;
int sheetNum = 2;
Iterator it=list.iterator();
//Iterator columnNamesKey= columnNames.keySet().iterator();
setSheetColumnTitle(sheet);
while (it.hasNext()) {
if (rowCnt == rpp) {
sheet = createSheet(wb, sheetNum);
setSheetColumnTitle(sheet);
rowCnt = 0;
sheetNum++;
}
HSSFRow row = sheet.createRow(rowCnt + 1);
Map entity=(Map)it.next();
for(int j=0;j<cNames.length;j++) {
//String propertyName=(String)columnNamesKey.next();
HSSFCell cell = row.createCell((short) j);
cell.setEncoding(HSSFCell.ENCODING_UTF_16);
String val = (String)entity.get(cNames[j]);
if (null == val) {
val = "";
}
cell.setCellValue(val);
}
rowCnt++;
}
try {
OutputStream os = response.getOutputStream();
response.reset();
response.setContentType("application/vnd.ms-excel");
response.setHeader("Content-disposition", "attachment; filename="
+ getFileName(fileName));
wb.write(os);
} catch (IOException ex) {
log.info("Export Excel file error ! " + ex.getMessage());
}
}
/**4
* @param response
* HttpServletResponse Response
* @param list 数据集
* @param
* String fileName 导出的Excel 文件名称
* @param sheetName
* String 导出的Excel Sheet名称
* @param columns
* List<Column> 导出的 Excel列
* @param rowPerPage
* int 每一个Sheet页的行数
*/
public static void export(HttpServletResponse response, List list,
String fileName, String sheetName, List columns, int rowPerPage) {
if (rowPerPage <= 10000 && rowPerPage >= 1) {
rpp = rowPerPage;
}
if (!"".equals(sheetName) && null != sheetName) {
shtName = sheetName;
} else {
shtName = "sheet";
}
cColumns=columns;
cNames=new String[columns.size()];
cLabels=new String[columns.size()];
for(int i=0;i<cColumns.size();i++){
Column column=(Column)columns.get(i);
cNames[i]=column.getName();
cLabels[i]=column.getLabel();
}
HSSFWorkbook wb = new HSSFWorkbook();
style = wb.createCellStyle();
style.setAlignment(HSSFCellStyle.ALIGN_CENTER);
HSSFSheet sheet = createSheet(wb, 1,list.size());
int rowCnt = 0;
int sheetNum = 2;
Iterator it=list.iterator();
//Iterator columnNamesKey= columnNames.keySet().iterator();
setSheetColumnTitle2(sheet);
while (it.hasNext()) {
if (rowCnt == rpp) {
sheet = createSheet(wb, sheetNum,list.size());
setSheetColumnTitle2(sheet);
rowCnt = 0;
sheetNum++;
}
HSSFRow row = sheet.createRow(rowCnt + 1);
Map entity=(Map)it.next();
for(int j=0;j<cNames.length;j++) {
//String propertyName=(String)columnNamesKey.next();
HSSFCell cell = row.createCell((short) j);
cell.setEncoding(HSSFCell.ENCODING_UTF_16);
String val = (String)entity.get(cNames[j]);
if (null == val) {
val = "";
}
cell.setCellValue(val);
}
rowCnt++;
}
try {
OutputStream os = response.getOutputStream();
response.reset();
response.setContentType("application/vnd.ms-excel");
response.setHeader("Content-disposition", "attachment; filename="
+ getFileName(fileName));
wb.write(os);
} catch (IOException ex) {
log.info("Export Excel file error ! " + ex.getMessage());
}
}
/**
* 设置Sheet页的列属性 123. *
*
* @param sht
* HSSFSheet 124.
*/
private static void setSheetColumnTitle(HSSFSheet sht) {
HSSFRow row = sht.createRow(0);
for (int i = 0; i < cLabels.length; i++) {
HSSFCell cell = row.createCell((short) (i));
cell.setEncoding(HSSFCell.ENCODING_UTF_16);
cell.setCellValue(cLabels[i]);
cell.setCellStyle(style);
//sht.autoSizeColumn(i,true);
}
}
private static void setSheetColumnTitle2(HSSFSheet sht) {
HSSFRow row = sht.createRow(0);
for (int i = 0; i < cColumns.size(); i++) {
Column column=(Column)cColumns.get(i);
HSSFCell cell = row.createCell((short) (i));
cell.setEncoding(HSSFCell.ENCODING_UTF_16);
cell.setCellValue(cLabels[i]);
cell.setCellStyle(style);
//sht.autoSizeColumn(i,true);
sht.setColumnWidth((short) i, column.getWidth());
}
}
/**
* 获得源数据中的列名称
*
* @param rsmd
* ResultSetMetaData
* @return String[]
*/
private static String[] getColumnNames(ResultSetMetaData rsmd) {
try {
StringBuffer result = new StringBuffer("");
for (int i = 1; i <= rsmd.getColumnCount(); i++) {
result.append(rsmd.getColumnLabel(i)).append(",");
}
if (result.length() > 0) {
return result.substring(0, result.length() - 1).toString()
.split(",");
}
} catch (Exception e) {
return null;
}
return null;
}
/**
* 创建一个Sheet页并返回该对象
*
* @param wb
* HSSFWorkbook
* @param seq
* int
* @return HSSFSheet
*/
private static HSSFSheet createSheet(HSSFWorkbook wb, int seq) {
int sup = seq * rpp;
int sub = (seq - 1) * rpp + 1;
if (sub < 1) {
sub = 1;
}
HSSFSheet sheet=wb.createSheet( );
shtName=shtName + "(" + sub + "-" + sup + ")";
wb.setSheetName(seq-1,shtName,HSSFWorkbook.ENCODING_UTF_16);
return sheet;
}
private static HSSFSheet createSheet(HSSFWorkbook wb, int seq,int totalSize) {
int sup = seq * rpp < totalSize ? seq * rpp : totalSize;
int sub = (seq - 1) * rpp + 1;
if (sub < 1) {
sub = 1;
}
HSSFSheet sheet=wb.createSheet( );
wb.setSheetName(seq-1,shtName + "(" + sub + "-" + sup + ")",HSSFWorkbook.ENCODING_UTF_16);
return sheet;
}
/**
* 获得导出的文件全名
*
* @param tableName
* String
* @return String
*/
private static String getFileName(String fileName) {
fileName+= new Date().getTime() + ".xls";
try {
return URLEncoder.encode(fileName, "UTF-8");
} catch (UnsupportedEncodingException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return null;
}
public static Object getPropertyValue(Object entity,String propertyName){
Object result=null;
if(methods==null){
try {
methods=dumMethod(entity.getClass());
} catch (IntrospectionException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
Method method=(Method)methods.get(propertyName);
try {
result= method.invoke(entity, null);
} catch (IllegalArgumentException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IllegalAccessException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (InvocationTargetException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return result;
}
public static Map dumMethod(Class cls) throws IntrospectionException{
BeanInfo bean=Introspector.getBeanInfo(cls ,cls.getSuperclass());
PropertyDescriptor[] propertyDescriptors= bean.getPropertyDescriptors();
Map map=new HashMap();
for(int i=0;i<propertyDescriptors.length;i++){
PropertyDescriptor pd=propertyDescriptors[i];
System.out.println("属性名="+pd.getName());
map.put(pd.getName(), pd.getReadMethod());
}
return map;
}
static Map methods=null;
}
Column.java
package com.sinovatech.bms.common.excel;
public class Column {
private String name;
private String label;
private short width=5000;
public Column(){}
public Column(String name,String label,short width){
this.name=name;
this.label=label;
this.width=width;
}
public Column(String name,String label ){
this.name=name;
this.label=label;
this.width=5000;
}
public String getLabel() {
return label;
}
public void setLabel(String label) {
this.label = label;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public short getWidth() {
return width;
}
public void setWidth(short width) {
this.width = width;
}
}