feat: bug-779 生产订单入库需要可多个生产订单合并打印

nflg-wms-admin/src/main/java/com/nflg/wms/admin/controller/InProduceOrderController.java

@@ -31,6 +31,7 @@ import jakarta.annotation.Resource;
 import jakarta.servlet.http.HttpServletResponse;
 import jakarta.validation.Valid;
 import jakarta.validation.constraints.NotBlank;
+import jakarta.validation.constraints.NotEmpty;
 import jakarta.validation.constraints.NotNull;
 import lombok.extern.slf4j.Slf4j;
 import org.springframework.core.io.ClassPathResource;
@@ -304,23 +305,34 @@ public class InProduceOrderController extends BaseController {
     }
 
     /**
-     * 导出报工单PDF
+     * 导出报工单PDF（单个）
      * @param id 订单id
      */
     @GetMapping("exportOrderPdf")
     public void exportDeliverOrder(HttpServletResponse response, @Valid @RequestParam @NotNull Long id) throws Exception {
+        PdfGeneratorUtil.generatePdf("生产入库单", exportHtml(id), response);
+    }
+
+    /**
+     * 导出报工单PDF（批量）
+     * @param ids 订单id列表
+     */
+    @PostMapping("exportOrderPdf1")
+    public void exportDeliverOrder1(HttpServletResponse response, @Valid @RequestBody @NotEmpty List<Long> ids) throws Exception {
+        List<String> htmls = new ArrayList<>();
+        for (Long id : ids) {
+            htmls.add(exportHtml(id));
+        }
+        PdfGeneratorUtil.generatePdf("生产入库单", htmls, response);
+    }
+
+    private String exportHtml(Long id) {
         WmsInProduceOrder order = produceOrderService.getById(id);
         VUtil.trueThrowBusinessError(Objects.isNull(order)).throwMessage("订单不存在");
         List<InProduceOrderItemVO> list = produceOrderItemService.getVOByOrderId(id);
         if (order.getList()) {
             list.removeIf(item -> Objects.equals(item.getParentId(), 0L));
         }
-//        WmsInProduceOrder order = new WmsInProduceOrder()
-//                .setNo(NoUtil.getInProduceNo());
-//        List<InProduceOrderItemVO> list = new ArrayList<>();
-//        for (int i = 0, count = RandomUtil.randomInt(1, 100); i < count; i++) {
-//            list.add(new InProduceOrderItemVO().setMaterialNo(RandomUtil.randomNumbers(10)).setMaterialDesc("非金属联件和紧固件等 M6 DIN 982 不锈钢304"));
-//        }
         InProduceOrderItemVO first = list.get(0);
         Map<String, String> base = new HashMap<>();
         base.put("date", DateUtil.format(LocalDateTime.now(), "yyyy-MM-dd"));
@@ -331,8 +343,7 @@ public class InProduceOrderController extends BaseController {
         variables.put("info", order);
         variables.put("base", base);
         variables.put("pages", PdfPageDTO.create(list, 17, new InProduceOrderItemVO()));
-        String html = ThymeleafUtil.generator("/template/", "生产入库单", ".html", variables);
+        return ThymeleafUtil.generator("/template/", "生产入库单", ".html", variables);
-        PdfGeneratorUtil.generatePdf("生产入库单" + order.getNo(), html, response);
     }
 
     /**

nflg-wms-admin/src/main/java/com/nflg/wms/admin/util/PdfGeneratorUtil.java

@@ -1,5 +1,9 @@
 package com.nflg.wms.admin.util;
 
+import com.itextpdf.kernel.pdf.PdfDocument;
+import com.itextpdf.kernel.pdf.PdfReader;
+import com.itextpdf.kernel.pdf.PdfWriter;
+import com.itextpdf.kernel.utils.PdfMerger;
 import com.lowagie.text.pdf.BaseFont;
 import com.nflg.wms.common.util.VUtil;
 import jakarta.servlet.http.HttpServletResponse;
@@ -9,19 +13,14 @@ import org.springframework.http.HttpHeaders;
 import org.springframework.http.MediaType;
 import org.xhtmlrenderer.pdf.ITextRenderer;
 
-import java.io.File;
+import java.io.*;
-import java.io.IOException;
-import java.io.OutputStream;
 import java.net.URL;
 import java.net.URLEncoder;
 import java.nio.charset.StandardCharsets;
 import java.nio.file.Files;
 import java.nio.file.Path;
 import java.nio.file.Paths;
-import java.util.Arrays;
+import java.util.*;
-import java.util.HashSet;
-import java.util.Objects;
-import java.util.Set;
 
 public class PdfGeneratorUtil {
 
@@ -58,6 +57,37 @@ public class PdfGeneratorUtil {
         renderer.createPDF(output);
     }
 
+    public static void generatePdf(String name, List<String> htmls, HttpServletResponse response) throws Exception {
+        response.setContentType(MediaType.APPLICATION_PDF_VALUE);
+        String encode = URLEncoder.encode(name + ".pdf", StandardCharsets.UTF_8);
+        response.setHeader(HttpHeaders.CONTENT_DISPOSITION, "inline;filename*=UTF-8''" + encode);
+        URL baseUrl = new ClassPathResource("template/").getURL();
+        List<byte[]> pdfParts = new ArrayList<>();
+        for (String html : htmls) {
+            ITextRenderer renderer = new ITextRenderer();
+            loadFonts(renderer);
+            renderer.setDocumentFromString(html, baseUrl.toString());
+            renderer.layout();
+            ByteArrayOutputStream baos = new ByteArrayOutputStream();
+            renderer.createPDF(baos);
+            pdfParts.add(baos.toByteArray());
+            baos.close();
+            renderer.finishPDF();
+        }
+        mergePdfs(pdfParts, response.getOutputStream());
+    }
+
+    private static void mergePdfs(List<byte[]> pdfBytesList, OutputStream outputStream) throws IOException {
+        PdfDocument pdfDoc = new PdfDocument(new PdfWriter(outputStream));
+        PdfMerger merger = new PdfMerger(pdfDoc);
+        for (byte[] bytes : pdfBytesList) {
+            PdfDocument srcDoc = new PdfDocument(new PdfReader(new ByteArrayInputStream(bytes)));
+            merger.merge(srcDoc, 1, srcDoc.getNumberOfPages());
+            srcDoc.close();
+        }
+        pdfDoc.close();
+    }
+
     private static void loadFonts(ITextRenderer renderer) throws IOException {
         Path fontsDir = Paths.get(PathUtils.getPath(), "fonts");
         VUtil.trueThrowBusinessError(!Files.exists(fontsDir) || !Files.isDirectory(fontsDir))