java导出数据库中Excel表格数据的方法

本篇文章基于java把数据库中的数据以excel的方式导出，欢迎各位大神吐槽：

1、基于maven jar包引入如下：　　

<dependency>
   <groupid>net.sourceforge.jexcelapi</groupid>
   <artifactid>jxl</artifactid>
   <version>2.6.12</version>
 </dependency> 

2、首先创建数据库对应的实体类vo ：uservo（具体代码省略）；

3、确定导出excel内的title列，并放在数组里：string[] （具体代码省略）；

4、编写导出excel的方法：

传入参数：

excel名称，excel内的title列数组string[]，数据集合list<uservo>

package bp.util;

import java.io.outputstream;
import java.util.list;
import javax.servlet.http.httpservletresponse;
import java.lang.reflect.field;

import jxl.workbook;
import jxl.format.alignment;
import jxl.format.border;
import jxl.format.borderlinestyle;
import jxl.format.verticalalignment;
import jxl.write.label;
import jxl.write.writablecellformat;
import jxl.write.writablefont;
import jxl.write.writablesheet;
import jxl.write.writableworkbook;

public class exportexcel {

  public final static string exportexcel(string filename, string[] title, list listcontent,
      httpservletresponse response) {
    string result = "excel文件导出成功！";
    try {
      outputstream os = response.getoutputstream();
      response.reset();
      response.setheader("content-disposition",
          "attachment; filename=" + new string(filename.getbytes("gb2312"), "iso8859-1"));
      response.setcontenttype("application/msexcel");
      writableworkbook workbook = workbook.createworkbook(os);

      writablesheet sheet = workbook.createsheet("sheet1", 0);
      jxl.sheetsettings sheetset = sheet.getsettings();
      sheetset.setprotected(false);

      writablefont boldfont = new writablefont(writablefont.arial, 10, writablefont.bold);
      writablecellformat wcf_center = new writablecellformat(boldfont);
      wcf_center.setborder(border.all, borderlinestyle.thin);
      wcf_center.setverticalalignment(verticalalignment.centre);
      wcf_center.setalignment(alignment.centre);
      wcf_center.setwrap(true);

      for (int i = 0; i < title.length; i++) {
        sheet.setcolumnview(i, 20);
        sheet.addcell(new label(i, 0, title[i], wcf_center));
      }
      field[] fields = null;
      int i = 1;
      for (object obj : listcontent) {
        fields = obj.getclass().getdeclaredfields();
        int j = 0;
        for (field v : fields) {
          v.setaccessible(true);
          object va = v.get(obj);
          if (va == null) {
            va = "";
          }
          sheet.addcell(new label(j, i, va.tostring(), wcf_center));
          j++;
        }
        i++;
      }
      workbook.write();
      workbook.close();

    } catch (exception e) {
      result = "excel文件导出失败";
      e.printstacktrace();
    }
    return result;
  }
}

在需要导出数据的时候调用此方法即可；

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。