赞
踩
- <dependency>
- <groupId>com.aliyun.oss</groupId>
- <artifactId>aliyun-sdk-oss</artifactId>
- <version>3.10.2</version>
- </dependency>
- <!--lombok-->
- <dependency>
- <groupId>org.projectlombok</groupId>
- <artifactId>lombok</artifactId>
- <optional>true</optional>
- </dependency>
- <!--hutool-->
- <dependency>
- <groupId>cn.hutool</groupId>
- <artifactId>hutool-all</artifactId>
- <version>选择你的版本</version>
- </dependency>
- import com.aliyun.oss.ClientException;
- import com.aliyun.oss.OSS;
- import com.aliyun.oss.OSSClientBuilder;
- import com.aliyun.oss.OSSException;
- import lombok.AllArgsConstructor;
- import lombok.Data;
- import lombok.extern.slf4j.Slf4j;
- import java.io.ByteArrayInputStream;
-
- @Data
- @AllArgsConstructor
- //固定代码,CV直接使用
- public class AliOssUtil {
-
- private String endpoint;
- private String accessKeyId;
- private String accessKeySecret;
- private String bucketName;
-
- /**
- * 文件上传
- *
- * @param bytes :传入的文件要转为byte[]
- * @param objectName :表示在oss中存储的文件名字。
- * @return
- */
- public String upload(byte[] bytes, String objectName) {
-
- // 创建OSSClient实例。
- OSS ossClient = new OSSClientBuilder().build(endpoint, accessKeyId, accessKeySecret);
-
- try {
- // 创建PutObject请求。
- ossClient.putObject(bucketName, objectName, new ByteArrayInputStream(bytes));
- } catch (OSSException oe) {
- System.out.println("Caught an OSSException, which means your request made it to OSS, "
- + "but was rejected with an error response for some reason.");
- System.out.println("Error Message:" + oe.getErrorMessage());
- System.out.println("Error Code:" + oe.getErrorCode());
- System.out.println("Request ID:" + oe.getRequestId());
- System.out.println("Host ID:" + oe.getHostId());
- } catch (ClientException ce) {
- System.out.println("Caught an ClientException, which means the client encountered "
- + "a serious internal problem while trying to communicate with OSS, "
- + "such as not being able to access the network.");
- System.out.println("Error Message:" + ce.getMessage());
- } finally {
- if (ossClient != null) {
- ossClient.shutdown();
- }
- }
-
- //文件访问路径规则 https://BucketName.Endpoint/ObjectName
- StringBuilder stringBuilder = new StringBuilder("https://");
- stringBuilder
- .append(bucketName)
- .append(".")
- .append(endpoint)
- .append("/")
- .append(objectName);
-
- return stringBuilder.toString();
- }
- }
- aliyun.oss.bucketName = scl-oss-test
- aliyun.oss.endpoint = oss-cn-beijing.aliyuncs.com
- aliyun.oss.accessKeyId =
- aliyun.oss.accessKeySecret =
- import lombok.Data;
- import org.springframework.boot.context.properties.ConfigurationProperties;
- import org.springframework.context.annotation.Configuration;
-
- @Configuration
- @ConfigurationProperties(prefix = "aliyun.oss")
- @Data
- public class AliOssProperties {
-
- private String endpoint;
- private String accessKeyId;
- private String accessKeySecret;
- private String bucketName;
-
-
- }
- import com.fpl.model.AliOssProperties;
- import com.fpl.utils.AliOssUtil;
- import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean;
- import org.springframework.context.annotation.Bean;
- import org.springframework.context.annotation.Configuration;
- @Configuration
- public class OssConfiguration {
- @Bean
- @ConditionalOnMissingBean
- public AliOssUtil getAliOssUtil(AliOssProperties aliOssProperties) {
- // log.info("创建OssUtil");
- AliOssUtil aliOssUtil = new AliOssUtil(
- aliOssProperties.getEndpoint(),
- aliOssProperties.getAccessKeyId(),
- aliOssProperties.getAccessKeySecret(),
- aliOssProperties.getBucketName()
- );
- return aliOssUtil;
- }
- }
其实就是修改了三句代码:
- package com.by.controller;
-
- import cn.hutool.core.io.FileUtil;
- import cn.hutool.http.HttpUtil;
- import com.by.util.AliOssUtil;
- import com.itextpdf.forms.PdfAcroForm;
- import com.itextpdf.forms.fields.PdfFormField;
- import com.itextpdf.kernel.font.PdfFont;
- import com.itextpdf.kernel.font.PdfFontFactory;
- import com.itextpdf.kernel.geom.PageSize;
- import com.itextpdf.kernel.pdf.PdfDocument;
- import com.itextpdf.kernel.pdf.PdfReader;
- import com.itextpdf.kernel.pdf.PdfWriter;
- import org.springframework.beans.factory.annotation.Autowired;
- import org.springframework.http.HttpHeaders;
- import org.springframework.http.HttpStatus;
- import org.springframework.http.MediaType;
- import org.springframework.http.ResponseEntity;
- import org.springframework.util.ResourceUtils;
- import org.springframework.web.bind.annotation.GetMapping;
- import org.springframework.web.bind.annotation.RestController;
-
- import javax.servlet.http.HttpServletResponse;
- import java.io.ByteArrayOutputStream;
- import java.io.File;
- import java.io.FileInputStream;
- import java.io.IOException;
- import java.util.HashMap;
- import java.util.Map;
- import java.util.Optional;
-
- /**
- * 控制器类,用于处理PDF模板填充及下载请求
- */
- @RestController
- public class PdfController {
- @Autowired
- private AliOssUtil aliOssUtil;
-
- /**
- * 处理GET请求以下载填充了数据的PDF文件
- *
- * @param response HttpServletResponse对象,用于设置响应头和发送下载文件
- * @return 响应实体,包含填充好数据的PDF字节流
- * @throws IOException 如果读取或写入PDF文件时发生异常
- */
- @GetMapping("/download")
- public ResponseEntity<byte[]> test(HttpServletResponse response) throws IOException {
- // 设置响应头,指示浏览器以附件形式下载文件,并设置文件名
- HttpHeaders headers = new HttpHeaders();
- headers.setContentType(MediaType.APPLICATION_OCTET_STREAM);
- String downloadFileName = System.currentTimeMillis() + ".pdf";
- response.setHeader("Content-Disposition", "attachment;filename=" + downloadFileName);
-
- // 准备需要填充到PDF模板中的数据
- Map<String, String> dataMap = new HashMap<>();
- dataMap.put("name", "可口可乐");
- dataMap.put("code", "350ml");
-
- // 填充数据并生成带数据的PDF字节流
- byte[] pdfBytes = getPdf(dataMap);
-
- //上传到oss
- aliOssUtil.upload(pdfBytes, downloadFileName);
-
- // 创建并返回包含填充后PDF字节流的响应实体
- return new ResponseEntity<>(pdfBytes, headers, HttpStatus.CREATED);
- }
-
- /**
- * 根据提供的数据填充PDF模板并返回填充后的PDF字节流
- *
- * @param dataMap 需要填充到PDF模板中的键值对数据
- * @return 填充好数据的PDF文件字节数组
- * @throws IOException 如果读取或写入PDF文件时发生异常
- */
- private byte[] getPdf(Map<String, String> dataMap) throws IOException {
- //获取阿里云OSS上传的pdf模板
- String fileUrl = "https://scl-oss-test.oss-cn-beijing.aliyuncs.com/1.pdf";
-
- //将文件下载后保存在E盘,返回结果为下载文件大小
- long size = HttpUtil.downloadFile(fileUrl, FileUtil.file("C:/Users/admin/Desktop"));
-
- // 获取PDF模板文件路径
- File sourcePdf = ResourceUtils.getFile("C:/Users/admin/Desktop/1.pdf");
-
- // 使用PDF阅读器加载模板文件
- PdfReader pdfReader = new PdfReader(new FileInputStream(sourcePdf));
-
- // 创建一个内存输出流用于存储填充好数据的PDF文件
- ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
-
- // 创建PDF文档对象,连接读取器和输出流
- PdfDocument pdf = new PdfDocument(pdfReader, new PdfWriter(outputStream));
-
- // 设置默认页面大小为A4
- pdf.setDefaultPageSize(PageSize.A4);
-
- // 获取PDF表单域对象
- PdfAcroForm form = PdfAcroForm.getAcroForm(pdf, true);
- Map<String, PdfFormField> fields = form.getFormFields();
-
- // 设置字体,这里使用的是"STSong-Light"字体
- PdfFont currentFont = PdfFontFactory.createFont("STSong-Light", "UniGB-UCS2-H", PdfFontFactory.EmbeddingStrategy.PREFER_NOT_EMBEDDED);
-
- // 遍历待填充的数据,并将其填入对应的表单域
- dataMap.forEach((key, value) -> {
- Optional<PdfFormField> formFieldOptional = Optional.ofNullable(fields.get(key));
- formFieldOptional.ifPresent(formField -> {
- // 设置字体并替换表单域的值
- formField.setFont(currentFont).setValue(value);
- });
- });
-
- // 锁定并合并所有表单域,使其无法再编辑
- form.flattenFields();
-
- // 关闭PDF文档,释放资源
- pdf.close();
-
- // 将填充好的PDF文件转换为字节数组并返回
- return outputStream.toByteArray();
- }
- }
Copyright © 2003-2013 www.wpsshop.cn 版权所有,并保留所有权利。