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首页 > 软件编程 > java > Java操作xls替换文本或图片

Java操作xls替换文本或图片的功能实现

作者：道友老李

这篇文章主要给大家介绍了关于Java操作xls替换文本或图片功能实现的相关资料,文中通过示例代码讲解了文件上传、文件处理和Excel文件生成,需要的朋友可以参考下

准备xls模板文件：template.xls

要求根据不同的产品型号和图片，插入到模板文件中，然后再填充产品信息。

准备需要替换的图片和数据

功能实现

 定义了一个名为BaseProductController的RESTful控制器，它负责处理与成品管理相关的HTTP请求。该控制器使用了Spring框架、Swagger注解以及Apache POI库来处理文件上传和Excel文档生成。

包声明与导入

package net.work.controller.base;

import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
import net.work.request.base.BaseProductReq;
import net.work.request.base.ProductExcelReq;
import net.work.service.base.BaseProductService;
import net.work.util.JsonData;
import net.work.util.StoreUtil;
import org.apache.poi.ss.usermodel.Workbook;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.cloud.context.config.annotation.RefreshScope;
import org.springframework.web.bind.annotation.*;
import org.springframework.web.context.request.RequestContextHolder;
import org.springframework.web.context.request.ServletRequestAttributes;
import org.springframework.web.multipart.MultipartFile;

import javax.servlet.http.HttpServletResponse;
import java.io.*;
import java.util.Map;

类声明与注解

@RefreshScope
@Api(tags = "成品管理")
@RestController
@RequestMapping("/api/base/v1/product/")
public class BaseProductController {

注入依赖与配置属性

@Value("${product.filePath}")
private String filePath;

@Autowired
private BaseProductService baseProductService;

方法解析

产品尺寸图和接线图导入

@ApiOperation("产品尺寸图和接线图导入")
@PostMapping("importProductImage")
public JsonData importProductImage(@RequestParam("file") MultipartFile file, String productModel) throws Exception {
    return baseProductService.importProductImage(file, filePath, productModel);
}

创建产品规格书xlsx

@ApiOperation("创建产品规格书xlsx")
@PostMapping("createProductExcel")
public void createProductExcel(@RequestBody ProductExcelReq productExcelReq) throws Exception {
    String productModel = productExcelReq.getProductModel();
    File file1 = new File(filePath + productModel + "\\img1.png");
    if (!file1.exists()) {
        throw new Exception("当前产品型号【" + productModel + "】img1.png文件不存在！");
    }
    File file2 = new File(filePath + productModel + "\\img2.png");
    if (!file2.exists()) {
        throw new Exception("当前产品型号【" + productModel + "】img2.png文件不存在！");
    }

    InputStream inputStream1 = new FileInputStream(file1);
    InputStream inputStream2 = new FileInputStream(file2);

    Workbook workbook = StoreUtil.createProductExcel(filePath, inputStream1, inputStream2, productExcelReq);
    ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
    workbook.write(outputStream);
    workbook.close();

    HttpServletResponse response = ((ServletRequestAttributes) (RequestContextHolder.currentRequestAttributes())).getResponse();
    response.setContentType("application/vnd.ms-excel");
    response.setHeader("Content-Disposition", "attachment;filename=" + productExcelReq.getProductModel() + ".xlsx");

    OutputStream out = response.getOutputStream();
    outputStream.writeTo(out);
    out.flush();
    out.close();
}

总结

BaseProductController类提供了成品管理的功能，包括：

该控制器利用了Spring框架的强大功能，如依赖注入、请求映射和异常处理，同时也结合了Swagger注解以增强API文档的可读性和维护性。此外，通过Apache POI库实现了Excel文件的生成和处理，满足了业务需求中对于文件操作的要求。@RefreshScope注解的应用还使得配置属性可以在运行时刷新，增强了应用程序的灵活性和适应性。

package net.work.controller.base;

import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
import net.work.request.base.BaseProductReq;
import net.work.request.base.ProductExcelReq;
import net.work.service.base.BaseProductService;
import net.work.util.JsonData;
import net.work.util.StoreUtil;
import org.apache.poi.ss.usermodel.Workbook;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.cloud.context.config.annotation.RefreshScope;
import org.springframework.web.bind.annotation.*;
import org.springframework.web.context.request.RequestContextHolder;
import org.springframework.web.context.request.ServletRequestAttributes;
import org.springframework.web.multipart.MultipartFile;

import javax.servlet.http.HttpServletResponse;
import java.io.*;
import java.util.Map;

@RefreshScope
@Api(tags = "成品管理")
@RestController
@RequestMapping("/api/base/v1/product/")
public class BaseProductController {

    @Value("${product.filePath}")
    private String filePath;

    @Autowired
    private BaseProductService baseProductService;

    @ApiOperation("产品尺寸图和接线图导入")
    @PostMapping("importProductImage")
    public JsonData importProductImage(@RequestParam("file") MultipartFile file, String productModel) throws Exception {
        return baseProductService.importProductImage(file, filePath, productModel);
    }

    @ApiOperation("创建产品规格书xlsx")
    @PostMapping("createProductExcel")
    public void createProductExcel(@RequestBody ProductExcelReq productExcelReq) throws Exception {
        String productModel = productExcelReq.getProductModel();
        File file1 = new File(filePath + productModel + "\\img1.png");
        if (!file1.exists()) {
            throw new Exception("当前产品型号【" + productModel + "】img1.png文件不存在！");
        }
        File file2 = new File(filePath + productModel + "\\img2.png");
        if (!file2.exists()) {
            throw new Exception("当前产品型号【" + productModel + "】img2.png文件不存在！");
        }

        InputStream inputStream1 = new FileInputStream(file1);
        InputStream inputStream2 = new FileInputStream(file2);

        Workbook workbook = StoreUtil.createProductExcel(filePath, inputStream1, inputStream2, productExcelReq);
        ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
        workbook.write(outputStream);
        workbook.close();

        HttpServletResponse response = ((ServletRequestAttributes) (RequestContextHolder.currentRequestAttributes())).getResponse();
        response.setContentType("application/vnd.ms-excel");
        response.setHeader("Content-Disposition", "attachment;filename=" + productExcelReq.getProductModel() + ".xlsx");

        OutputStream out = response.getOutputStream();
        outputStream.writeTo(out);
        out.flush();
        out.close();
    }

}

createProductExcel

定义了一个名为createProductExcel的静态方法，该方法用于创建一个基于模板的Excel文件（.xlsx），并根据提供的参数自定义内容。此方法使用了Apache POI库来操作Excel文件，并且能够根据不同的条件选择不同的模板文件和插入图片。

方法签名

public static Workbook createProductExcel(String filePath, InputStream inp2, InputStream inp3,
                                         ProductExcelReq productExcelReq)

模板选择逻辑

String templateName1 = "template1.xlsx";
String templateName2 = "template2.xlsx";
if (productExcelReq.getLanguage() == 1) {
    templateName1 = "template1_en.xlsx";
    templateName2 = "template2_en.xlsx";
}

流初始化与模板选择

try (InputStream inp0 = new FileInputStream(filePath + templateName1);
     InputStream inp1 = new FileInputStream(filePath + templateName2)) {
    InputStream inp = inp0;
    // 可以根据不同的类型决定使用哪个模板
    if (productExcelReq.getInstallType().contains("xxx")) {
        inp = inp1;
    }
    Workbook workbook = new XSSFWorkbook(inp);

图片插入

Sheet sheet = workbook.getSheetAt(0);
{
    byte[] bytes1 = IOUtils.toByteArray(inp2);
    byte[] bytes2 = IOUtils.toByteArray(inp3);
    int pictureIdx1 = workbook.addPicture(bytes1, Workbook.PICTURE_TYPE_PNG);
    int pictureIdx2 = workbook.addPicture(bytes2, Workbook.PICTURE_TYPE_PNG);

    CreationHelper helper = workbook.getCreationHelper();
    Drawing<?> drawing = sheet.createDrawingPatriarch();

    ClientAnchor anchor1 = helper.createClientAnchor();
    anchor1.setCol1(2);
    anchor1.setRow1(6);
    ClientAnchor anchor2 = helper.createClientAnchor();
    anchor2.setCol1(5);
    anchor2.setRow1(18);

    Picture pict1 = drawing.createPicture(anchor1, pictureIdx1);
    Picture pict2 = drawing.createPicture(anchor2, pictureIdx2);
    pict1.resize(4.08, 7.67);
    pict2.resize(1, 3.05);

修改单元格内容

// 修改单元格内容
Row row = sheet.getRow(15);
Cell cell = row.getCell(3);
cell.setCellValue(productExcelReq.getSpecification());

row = sheet.getRow(16);
cell = row.getCell(3);
cell.setCellValue(productExcelReq.getProductModel());

row = sheet.getRow(17);
cell = row.getCell(3);
cell.setCellValue(productExcelReq.getSwitchType());

row = sheet.getRow(18);
cell = row.getCell(3);
cell.setCellValue(productExcelReq.getWorkDistance());

row = sheet.getRow(19);
cell = row.getCell(3);
cell.setCellValue(productExcelReq.getInstallType());

异常处理

} catch (IOException e) {
    throw new RuntimeException(e);
}

总结

createProductExcel方法的主要功能是基于模板创建一个自定义的Excel文件，并根据业务需求动态地插入图片和修改特定单元格的内容。通过这种方法，可以灵活地生成符合不同要求的产品规格书，支持多语言版本和多种安装类型的文档生成。此外，使用Apache POI库使得Excel文件的操作变得简单直接，同时利用Java的IO流机制确保了资源的有效管理和安全释放。

    public static Workbook createProductExcel(String filePath, InputStream inp2, InputStream inp3,
                                              ProductExcelReq productExcelReq) {
        String templateName1 = "template1.xlsx";
        String templateName2 = "template2.xlsx";
        if (productExcelReq.getLanguage() == 1) {
            templateName1 = "template1_en.xlsx";
            templateName2 = "template2_en.xlsx";
        }
        try (InputStream inp0 = new FileInputStream(filePath + templateName1);
             InputStream inp1 = new FileInputStream(filePath + templateName2)) {
            InputStream inp = inp0;
            // 可以根据不同的类型决定使用哪个模板
            if (productExcelReq.getInstallType().contains("xxx")) {
                inp = inp1;
            }
            Workbook workbook = new XSSFWorkbook(inp);
            Sheet sheet = workbook.getSheetAt(0);
            {
                byte[] bytes1 = IOUtils.toByteArray(inp2);
                byte[] bytes2 = IOUtils.toByteArray(inp3);
                int pictureIdx1 = workbook.addPicture(bytes1, Workbook.PICTURE_TYPE_PNG);
                int pictureIdx2 = workbook.addPicture(bytes2, Workbook.PICTURE_TYPE_PNG);

                CreationHelper helper = workbook.getCreationHelper();
                Drawing<?> drawing = sheet.createDrawingPatriarch();

                ClientAnchor anchor1 = helper.createClientAnchor();
                anchor1.setCol1(2);
                anchor1.setRow1(6);
                ClientAnchor anchor2 = helper.createClientAnchor();
                anchor2.setCol1(5);
                anchor2.setRow1(18);

                Picture pict1 = drawing.createPicture(anchor1, pictureIdx1);
                Picture pict2 = drawing.createPicture(anchor2, pictureIdx2);
                pict1.resize(4.08, 7.67);
                pict2.resize(1, 3.05);

                // 修改单元格内容
                Row row = sheet.getRow(15);
                Cell cell = row.getCell(3);
                cell.setCellValue(productExcelReq.getSpecification());

                row = sheet.getRow(16);
                cell = row.getCell(3);
                cell.setCellValue(productExcelReq.getProductModel());

                row = sheet.getRow(17);
                cell = row.getCell(3);
                cell.setCellValue(productExcelReq.getSwitchType());

                row = sheet.getRow(18);
                cell = row.getCell(3);
                cell.setCellValue(productExcelReq.getWorkDistance());

                row = sheet.getRow(19);
                cell = row.getCell(3);
                cell.setCellValue(productExcelReq.getInstallType());

                return workbook;
            }
        } catch (IOException e) {
            throw new RuntimeException(e);
        }
    }

总结 

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