java代码实现导出Excel表格、工具ssm框架、maven、idea

第一步、导入依赖

    <!--生成excel文件-->
    <dependency>
      <groupId>org.apache.poi</groupId>
      <artifactId>poi</artifactId>
      <version>3.9</version>
    </dependency>
    <dependency>
      <groupId>org.apache.poi</groupId>
      <artifactId>poi-examples</artifactId>
      <version>3.9</version>
    </dependency>
    <dependency>
      <groupId>org.apache.poi</groupId>
      <artifactId>poi-excelant</artifactId>
      <version>3.9</version>
    </dependency>
    <dependency>
      <groupId>org.apache.poi</groupId>
      <artifactId>poi-ooxml</artifactId>
      <version>3.9</version>
    </dependency>
    <dependency>
      <groupId>org.apache.poi</groupId>
      <artifactId>poi-ooxml-schemas</artifactId>
      <version>3.9</version>
    </dependency>
    <dependency>
      <groupId>org.apache.poi</groupId>
      <artifactId>poi-scratchpad</artifactId>
      <version>3.9</version>
    </dependency>　　

第二步，编写实体类

public class Zhi {
    private String url;                 //地址
    private String Requestbody;         //请求体
    private String Responsebody;         //响应体

    @Override
    public String toString() {
        return "Zhi{" +
                "url=‘" + url + ‘\‘‘ +
                ", Requestbody=‘" + Requestbody + ‘\‘‘ +
                ", Responsebody=‘" + Responsebody + ‘\‘‘ +
                ‘}‘;
    }

    public String getUrl() {
        return url;
    }

    public void setUrl(String url) {
        this.url = url;
    }

    public String getRequestbody() {
        return Requestbody;
    }

    public void setRequestbody(String requestbody) {
        Requestbody = requestbody;
    }

    public String getResponsebody() {
        return Responsebody;
    }

    public void setResponsebody(String responsebody) {
        Responsebody = responsebody;
    }
}

第三步、编写表格生成工具

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

public class ExcelUtil {

    /**
     * 导出Excel
     * @param sheetName sheet名称
     * @param title 标题
     * @param values 内容
     * @param wb HSSFWorkbook对象
     * @return
     */
    public static HSSFWorkbook getHSSFWorkbook(String sheetName,String []title,String [][]values, HSSFWorkbook wb){

        // 第一步，创建一个HSSFWorkbook，对应一个Excel文件
        if(wb == null){
            wb = new HSSFWorkbook();
        }

        // 第二步，在workbook中添加一个sheet,对应Excel文件中的sheet
        HSSFSheet sheet = wb.createSheet(sheetName);

        // 第三步，在sheet中添加表头第0行,注意老版本poi对Excel的行数列数有限制
        HSSFRow row = sheet.createRow(0);

        // 第四步，创建单元格，并设置值表头 设置表头居中
        HSSFCellStyle style = wb.createCellStyle();
        style.setAlignment(HSSFCellStyle.ALIGN_CENTER); // 创建一个居中格式

        //声明列对象
        HSSFCell cell = null;

        //创建标题
        for(int i=0;i<title.length;i++){
            cell = row.createCell(i);
            cell.setCellValue(title[i]);
            cell.setCellStyle(style);
        }

        //创建内容
        for(int i=0;i<values.length;i++){
            row = sheet.createRow(i + 1);
            for(int j=0;j<values[i].length;j++){
                //将内容按顺序赋给对应的列对象
                row.createCell(j).setCellValue(values[i][j]);
            }
        }
        return wb;
    }
}

　　第四步、编写controller层

import cn.kgc.pojo.Account;
import cn.kgc.pojo.Zhi;
import cn.kgc.service.impl.ExcelUtil;
import cn.kgc.service.impl.SalaryServiceImpl;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;

import javax.annotation.Resource;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.jsp.tagext.PageData;
import java.io.OutputStream;
import java.io.UnsupportedEncodingException;
import java.util.ArrayList;
import java.util.List;
import java.util.Random;

@Controller
@RequestMapping(value = "/report")
public class ReportFormController{

    //@Resource(name = "reportService")
    //private ReportManager reportService;

    @Resource(name = "aoo")
    SalaryServiceImpl salaryService;

    /**
     * 导出报表
     * @return
     */
    @RequestMapping(value = "/export")
    @ResponseBody
    public void export(HttpServletRequest request, HttpServletResponse response) throws Exception {
        //获取数据
        List<Zhi> list = new ArrayList<Zhi>();
        Zhi zhi=null;
        /*生成随机数*/
        Random random = new Random();
        for(int i=0;i<100;i++){
            int a = (int)(random.nextInt(900))+100;
            zhi=new Zhi();
            zhi.setUrl("/NGCRMPF_GS_CGSHQGETFULLUSRINFO_POST");
            zhi.setRequestbody("{\"params\":{\"object\":\"ServiceNo:13919892"+a+"\"}}");
            zhi.setResponsebody("{\"rtnCode\":\"0\",\"rtnMsg\":\"成功!\",\"bean\":{},\"beans\":[],\"object\":\"0~success~0~75~0~正常~01~58元新飞享套餐~1~0931\"}");
            list.add(zhi);
        }

        //excel标题
        String[] title = {"请求地址","请求体","响应体"};

         //excel文件名
         String fileName = "学生信息表"+System.currentTimeMillis()+".xls";

         //sheet名
          String sheetName = "学生信息表";

            String [][] content = new String[list.size()][];
            for (int i = 0; i < list.size(); i++) {
                content[i] = new String[title.length];
                Zhi obj = list.get(i);
                content[i][0] = obj.getUrl()+"";
                content[i][1] = obj.getRequestbody()+"";
                content[i][2] = obj.getResponsebody()+"";
            }

            //创建HSSFWorkbook
            HSSFWorkbook wb = ExcelUtil.getHSSFWorkbook(sheetName, title, content, null);

            //响应到客户端
            try {
                this.setResponseHeader(response, fileName);
                OutputStream os = response.getOutputStream();
                wb.write(os);
                os.flush();
                os.close();
                } catch (Exception e) {
                e.printStackTrace();
            }
    }

    //发送响应流方法
    public void setResponseHeader(HttpServletResponse response, String fileName) {
        try {
            try {
                fileName = new String(fileName.getBytes(),"ISO8859-1");
            } catch (UnsupportedEncodingException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
            response.setContentType("application/octet-stream;charset=ISO8859-1");
            response.setHeader("Content-Disposition", "attachment;filename="+ fileName);
            response.addHeader("Pargam", "no-cache");
            response.addHeader("Cache-Control", "no-cache");
        } catch (Exception ex) {
            ex.printStackTrace();
        }
    }
}

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　　第五步 编写jsp部分 调用一下即可

<a href="${pageContext.request.contextPath}/report/export">导出Excel表格</a>

原文地址：https://www.cnblogs.com/yxs98/p/11293719.html