Java excel 导出 工具

  依赖：

	
		
			org.apache.poi
			poi
			RELEASE
		
		
			org.apache.poi
			poi-ooxml
			RELEASE
		
		

　　

 

核心类：

 

package com.cy.common.utils;

import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;

import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletResponse;

import org.apache.poi.hssf.usermodel.HSSFCell;
import org.apache.poi.hssf.usermodel.HSSFRow;
import org.apache.poi.hssf.usermodel.HSSFSheet;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;

/**
 * excel 工具
 * 
 * @author Admin
 *
 */
public class ExcelUtils {

	@SuppressWarnings("resource")
	public static  void httpDownload(HttpServletResponse response, String fileName,  List fields, List data) throws IOException {
		HSSFWorkbook workbook = new HSSFWorkbook();
		HSSFSheet sheet = workbook.createSheet("sheet1");
		
		if( data == null ) {
			data = new ArrayList();
		}
		for(int i=0;i  map = BeanUtils.toFormatMap(rowData);
			HSSFRow row = sheet.createRow(i);
			for( int j=0;j void httpDownload(HttpServletResponse response, String fileName, List titles , List fields, List data) throws IOException {
		HSSFWorkbook workbook = new HSSFWorkbook();
		HSSFSheet sheet = workbook.createSheet("sheet1");
		
		if( data == null ) {
			data = new ArrayList();
		}
		
		HSSFRow titleRow = sheet.createRow(0);
		for( int j=0;j  map = BeanUtils.toFormatMap(rowData);
			HSSFRow row = sheet.createRow(i);
			for( int j=0;j 
  
package com.cy.common.utils;

import java.io.File;
import java.lang.annotation.Annotation;
import java.lang.reflect.Field;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.lang.reflect.Modifier;
import java.util.ArrayList;
import java.util.Date;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import com.fasterxml.jackson.databind.annotation.JsonSerialize;
import com.github.pagehelper.Page;

/**
 * bean的工具类
 * @author ZHANGYUKUN
 *
 */
public class BeanUtils {

	
	private static Logger logger = LoggerFactory.getLogger(BeanUtils.class);
	
	/**
	 * 复制一个对象到另一个对象，忽略null值字段
	 * 
	 * 
	 * @param source
	 * @param target
	 * @param ignoreNull
	 */
	public static void copyProperties(Object source, Object target, Boolean ignoreNull) {
		if( target == null ) {
			return ;
		} 
		
		if( source == null ) {
			return ;
		}
		
		if (!ignoreNull) {
			org.springframework.beans.BeanUtils.copyProperties(source, target);
		} else {
			String[] ignoreFiled = getNullField(source);
			org.springframework.beans.BeanUtils.copyProperties(source, target, ignoreFiled);
		}

	}
	
	public static void copyProperties(Object source, Object target) {
		copyProperties(  source ,target ,false );
	}
	
	/**
	 * 创建并复制一个对象
	 * @return
	 * @throws InstantiationException
	 * @throws IllegalAccessException
	 */
	public static  T copyNew(Object source, Class targetCls) {
		if( source == null  ) {
			return null;
		}
		
		T rt;
		try {
			rt = targetCls.getDeclaredConstructor().newInstance();
		} catch (Exception e) {
			e.printStackTrace();
			return null;
		}
		org.springframework.beans.BeanUtils.copyProperties(source, rt);
		return rt;
	}
	
	/**
	 * 复制信息到outList
	 * 
	 * @param list
	 * @param cls
	 * @return
	 */
	@SuppressWarnings("unchecked")
	public static  List copyToOutList(List list, Class cls) {
		if( list == null ) {
			return null;
		}
		List rtList = null;
		try {
			rtList = list.getClass().getDeclaredConstructor().newInstance();
			
			if( list instanceof Page ) {
				Page