jxl 导出excel springMVC

参考网上的资料，改了改，顺便记录下：

方法一：

Controller 调用

/*-------------------改造自 AbstractJExcelView-------------------------------------*/
// 创建表格标题
String[] titles = {"", "", "", "", "",
 "", "","","",""};
//列名
String[] columns = {"你自己的列名", "对应你数据库的字段", "", "", "",
		 "", "","","",""};
//列宽
Integer[] widths = {25, 20, 30, 20, 20, 20, 20, 20, 20, 30};
//sheet名称
String sheetName = "考试场次"; 
String fileName = "考试场次.xls";
//excel 名称
String excel_name = new String(fileName.getBytes("GBK"), "ISO8859-1");

//导出的数据
List xxBeanList = xxService
		.queryXxList(xxBean);

model.put("list", kaoShiChangCiBeanList);		
model.put("columns", columns);
model.put("titles", titles);
model.put("widths", widths);

//request 没有用，暂时传过去
new MyJxlExcelUtil().buildExcelDocument(model, sheetName, excel_name, request, response);
/*--------------------------------------------------------*/

方法二：

Controller 调用

/*-------------------另一种方法-------------------------------------*/
String filename = "考试场次"; 
String excel_name = new String(filename.getBytes("GBK"), "ISO8859-1"); 

response.setContentType("APPLICATION/OCTET-STREAM");
response.setHeader("Content-Disposition", "attachment; filename="
		+ excel_name+ ".xls");

//导出的数据
List xxBeanList = xxService
		.queryXxList(xxBean);
		
LinkedHashMap keyMap = new LinkedHashMap();
keyMap.put("你的列名", "对应的excel列名");
keyMap.put("status_name", "状态");
//省略....

//jxl的自动列宽对中文支持不好，设置列宽度
Integer[] columns_widths = {30, 25, 25, 25, 25, 25, 25, 25, 25, 40};

// 设置调用的方法名
Map methodMap = new HashMap();
// 方法可以在JxlExcelUtils定义，会根据名字进行调用，可以用来处理一些数据，如decode之类的功能
// methodMap.put("cardType", "cardTypeConverter");

JxlExcelUtil jxlExcelUtil = new JxlExcelUtil();
OutputStream out = response.getOutputStream();
if (null != xxBeanList
		&& xxBeanList.size() > 0) {
	//生成Excel
	jxlExcelUtil.getExcelStream(response,filename, keyMap,
			xxBeanList, out, methodMap,columns_widths);
}
/*--------------------------------------------------------*/

MyJxlExcelUtil.java

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

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import jxl.SheetSettings;
import jxl.Workbook;
import jxl.WorkbookSettings;
import jxl.format.Alignment;
import jxl.format.VerticalAlignment;
import jxl.write.WritableCellFormat;
import jxl.write.WritableFont;
import jxl.write.WritableSheet;
import jxl.write.WritableWorkbook;
import jxl.write.WriteException;
import jxl.write.biff.RowsExceededException;

import org.apache.commons.beanutils.PropertyUtils;

/**
 * @Description: Excel导出
 * @author [email protected]
 * @date 2017年1月11日 下午1:50:58
 * @version V1.0
 */
public class MyJxlExcelUtil {
	
	//默认值
	private String[] columnNames = new String[] {};

	private String[] dbColumnNames = new String[] {};

	private Integer[] columnWidths = new Integer[] {};

	@SuppressWarnings("unchecked")
	public void buildExcelDocument(Map map, String sheetName, String excelName,  HttpServletRequest request,
			HttpServletResponse response) {
		
		String[] titles = (String[]) map.get("titles");
		if (null != titles && titles.length > 0) {
			columnNames = titles;
		}
		String[] columns = (String[]) map.get("columns");
		if (null != columns && columns.length > 0) {
			dbColumnNames = columns;
		}

		Integer[] widths = (Integer[]) map.get("widths");
		if (null != widths && widths.length > 0) {
			columnWidths = widths;
		}
		
		
		OutputStream os = null;
		WritableWorkbook workbook = null;
		try {
			os = response.getOutputStream();
			workbook = Workbook.createWorkbook(os);

			// 设置response方式,使执行此controller时候自动出现下载页面,而非直接使用excel打开
			response.setContentType("APPLICATION/OCTET-STREAM");
			response.setHeader("Content-Disposition", "attachment; filename="
					+ excelName);
			os = response.getOutputStream();

			// 全局设置
			WorkbookSettings setting = new WorkbookSettings();
			java.util.Locale locale = new java.util.Locale("zh", "CN");
			setting.setLocale(locale);
			setting.setEncoding("UTF-8");
			
			// 创建工作薄
			workbook = Workbook.createWorkbook(os); // 建立excel文件
			// 创建第一个工作表
			jxl.write.WritableSheet ws = workbook.createSheet(sheetName, 0); // sheet名称
			SheetSettings ss = ws.getSettings();
			ss.setVerticalFreeze(1);// 冻结表头
			
			// 添加标题
			this.addColumNameToWsheet(ws);

			List