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LUOJIE\coolp
2026-01-30 19:31:31 +08:00
parent 8dd8d2668a
commit b6efb383b8
6 changed files with 107 additions and 26 deletions
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4
qingyun-service/src/main/java/com/qingyun/service/compare/factory/FileComparisonStrategyFactory.java
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@@ -10,10 +10,12 @@ import java.util.Comparator;
import java.util.List;
import java.util.stream.Collectors;
import lombok.extern.slf4j.Slf4j;
/**
* 策略工厂（根据文件类型选择策略）
*/
@Component
@Slf4j
public class FileComparisonStrategyFactory {
private final List<FileComparisonStrategy> strategies;
@@ -36,12 +38,14 @@ public class FileComparisonStrategyFactory {
String ext1 = getFileExtension(task.getFirstContractUrl());
String ext2 = getFileExtension(task.getSecondContractUrl());
log.info("选择比对策略，扩展名: first={}, second={}", ext1, ext2);
if (!ext1.equalsIgnoreCase(ext2)) {
throw new ServiceException("两份文件类型不一致，无法对比");
}
for (FileComparisonStrategy strategy : strategies) {
if (strategy.supports(ext1)) {
log.info("匹配到策略: {}", strategy.getClass().getSimpleName());
return strategy;
}
}

8
qingyun-service/src/main/java/com/qingyun/service/compare/strategy/WordComparisonStrategy.java
View File

@@ -212,6 +212,14 @@ public class WordComparisonStrategy extends AbstractFileComparisonStrategy imple
pdfFile = targetFile;
}
}
// 校验目标PDF是否可读，提前捕获异常并提升错误可见性
try (PDDocument doc = Loader.loadPDF(pdfFile)) {
if (doc == null || doc.getNumberOfPages() <= 0) {
throw new ServiceException("生成的PDF无法解析或页数为0");
}
} catch (IOException e) {
throw new ServiceException("生成的PDF无法被PDFBox加载: " + e.getMessage());
}
// 更新合同URL为新的PDF文件路径
String newUrl = "/profile/upload/" + needUploadName;

62
qingyun-service/src/main/java/com/qingyun/service/utils/PdfUtil.java
View File

@@ -6,6 +6,7 @@ import com.documents4j.api.IConverter;
import com.documents4j.job.LocalConverter;
import com.qingyun.common.config.QingYunConfig;
import com.qingyun.common.utils.file.FileUploadUtils;
import com.qingyun.common.constant.Constants;
import org.apache.commons.io.FilenameUtils;
import org.apache.commons.lang3.tuple.Pair;
import org.apache.pdfbox.Loader;
@@ -19,6 +20,8 @@ import javax.imageio.ImageIO;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.StandardCopyOption;
import java.util.ArrayList;
import java.util.List;
import java.util.concurrent.Future;
@@ -99,9 +102,37 @@ public class PdfUtil {
String newName = name.substring(0, name.lastIndexOf("."));
String projectUrl = QingYunConfig.getProjectUrl();
File tempFile = File.createTempFile(newName + System.currentTimeMillis(), getFileExtension(name));
long file = HttpUtil.downloadFile(projectUrl + pdfUrl, tempFile);
if (file <= 0) {
throw new IOException("无法下载 PDF 文件");
/**
* 下载或本地复制文件到临时目录
* - 当路径以 /profile 开头时，直接从容器本地文件系统复制，避免网关/反代造成的HTML错误页
* - 否则通过 HTTP 下载
*/
if (pdfUrl != null && pdfUrl.startsWith(Constants.RESOURCE_PREFIX)) {
String localPath = pdfUrl.replaceFirst(Constants.RESOURCE_PREFIX, QingYunConfig.getProfile());
File source = new File(localPath);
if (!source.exists() || !source.isFile()) {
throw new IOException("本地文件不存在或无效: " + localPath);
}
Files.copy(source.toPath(), tempFile.toPath(), StandardCopyOption.REPLACE_EXISTING);
} else {
long size = HttpUtil.downloadFile(projectUrl + pdfUrl, tempFile);
if (size <= 0) {
throw new IOException("无法下载文件: " + projectUrl + pdfUrl);
}
}
/**
* 若为PDF后缀，进行签名与解析预检测
*/
if (".pdf".equalsIgnoreCase(getFileExtension(name))) {
try (PDDocument doc = Loader.loadPDF(tempFile)) {
if (doc == null || doc.getNumberOfPages() <= 0) {
throw new IOException("下载的PDF无法解析或页数为0");
}
} catch (IOException e) {
throw new IOException("下载的PDF无法被PDFBox加载: " + e.getMessage(), e);
}
}
return tempFile;
}
@@ -126,6 +157,16 @@ public class PdfUtil {
File outputFile = new File(wordFile.getParent(),
FilenameUtils.getBaseName(wordFile.getName()) + ".pdf");
/**
* 将 Word 文件转换为 PDF（Windows）
* - 使用 documents4j 本地转换器进行格式转换
* - 转换完成后进行健全性校验：文件存在、非空、可被 PDFBox 正常加载
* - 若校验失败则抛出 IOException，避免后续流程在解析阶段失败
*
* @param wordFile 待转换的 Word 临时文件
* @return 转换后的 PDF 文件对象
* @throws IOException 当转换或校验失败时抛出
*/
try {
IConverter converter = LocalConverter.builder().build();
@@ -134,7 +175,20 @@ public class PdfUtil {
.to(outputFile).as(DocumentType.PDF)
.prioritizeWith(1000) // optional
.schedule();
conversion.get(); // 这里会阻塞直到转换完成
conversion.get(); // 阻塞直到转换完成
// 基础校验：文件存在且非空
if (!outputFile.exists() || outputFile.length() == 0) {
throw new IOException("PDF文件未生成或为空");
}
// 尝试用 PDFBox 打开以验证文件有效性
try (PDDocument doc = Loader.loadPDF(outputFile)) {
if (doc == null || doc.getNumberOfPages() <= 0) {
throw new IOException("生成的PDF无法解析或页数为0");
}
} catch (IOException e) {
throw new IOException("生成的PDF无法被PDFBox加载: " + e.getMessage(), e);
}
return outputFile;
} catch (Exception e) {