java代码实现导出Excel表格、工具ssm框架、maven、idea
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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>
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