From a7dab252ef7668fe8a327edf6838ba91c859d4e1 Mon Sep 17 00:00:00 2001
From: caozehui <2427765068@qq.com>
Date: Tue, 5 Nov 2024 10:08:44 +0800
Subject: [PATCH] =?UTF-8?q?=E5=90=AF=E5=8A=A8=E5=87=BA=E9=94=99?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 njcn-common/pom.xml                           | 18 ++++++
 .../java/com/njcn/common/utils/ExcelUtil.java | 63 +++++++++++++++++++
 2 files changed, 81 insertions(+)
 create mode 100644 njcn-common/src/main/java/com/njcn/common/utils/ExcelUtil.java

diff --git a/njcn-common/pom.xml b/njcn-common/pom.xml
index d724b17..a3a3deb 100644
--- a/njcn-common/pom.xml
+++ b/njcn-common/pom.xml
@@ -26,6 +26,7 @@
         <jackson.jsr310.version>2.17.0</jackson.jsr310.version>
         <slf4j.version>1.7.32</slf4j.version>
         <logback.version>1.2.12</logback.version>
+        <easypoi.version>4.4.0</easypoi.version>
     </properties>
 
     <dependencies>
@@ -108,6 +109,23 @@
                 </exclusion>
             </exclusions>
         </dependency>
+
+        <dependency>
+            <groupId>com.njcn</groupId>
+            <artifactId>common-core</artifactId>
+            <version>1.0.0</version>
+        </dependency>
+        <dependency>
+            <groupId>com.njcn</groupId>
+            <artifactId>common-web</artifactId>
+            <version>1.0.0</version>
+        </dependency>
+        <dependency>
+            <groupId>cn.afterturn</groupId>
+            <artifactId>easypoi-spring-boot-starter</artifactId>
+            <version>${easypoi.version}</version>
+        </dependency>
+
     </dependencies>
 
 </project>
\ No newline at end of file
diff --git a/njcn-common/src/main/java/com/njcn/common/utils/ExcelUtil.java b/njcn-common/src/main/java/com/njcn/common/utils/ExcelUtil.java
new file mode 100644
index 0000000..3339506
--- /dev/null
+++ b/njcn-common/src/main/java/com/njcn/common/utils/ExcelUtil.java
@@ -0,0 +1,63 @@
+package com.njcn.common.utils;
+
+import cn.afterturn.easypoi.excel.ExcelExportUtil;
+import cn.afterturn.easypoi.excel.entity.ExportParams;
+import cn.hutool.core.util.CharsetUtil;
+import com.njcn.web.utils.HttpServletUtil;
+import lombok.extern.slf4j.Slf4j;
+import org.apache.poi.ss.usermodel.Workbook;
+
+import javax.servlet.ServletOutputStream;
+import javax.servlet.http.HttpServletResponse;
+import java.io.IOException;
+import java.net.URLEncoder;
+import java.util.Collection;
+
+/**
+ * @author caozehui
+ * @version 1.0.0
+ * @date 2024年11月05日
+ */
+@Slf4j
+public class ExcelUtil {
+    /**
+     * 指定名称、数据下载报表
+     *
+     * @param fileName 文件名
+     */
+    public static void exportExcel(String fileName, Class<?> pojoClass, Collection<?> dataSet) {
+        HttpServletResponse response = HttpServletUtil.getResponse();
+        try (ServletOutputStream outputStream = response.getOutputStream()) {
+            fileName = URLEncoder.encode(fileName, CharsetUtil.UTF_8);
+            response.reset();
+            response.setHeader("Content-Disposition", "attachment; filename=\"" + fileName + "\"");
+            response.setContentType("application/octet-stream;charset=UTF-8");
+            ExportParams exportParams = new ExportParams();
+            Workbook workbook = ExcelExportUtil.exportExcel(exportParams, pojoClass, dataSet);
+            workbook.write(outputStream);
+        } catch (IOException e) {
+            log.error(">>> 导出数据异常：{}", e.getMessage());
+        }
+    }
+
+    /**
+     * 指定名称、sheet名、数据下载报表
+     *
+     * @param fileName 文件名
+     */
+    public static void exportExcel(String fileName, String sheetName, Class<?> pojoClass, Collection<?> dataSet) {
+        HttpServletResponse response = HttpServletUtil.getResponse();
+        try (ServletOutputStream outputStream = response.getOutputStream()) {
+            fileName = URLEncoder.encode(fileName, CharsetUtil.UTF_8);
+            response.reset();
+            response.setHeader("Content-Disposition", "attachment; filename=\"" + fileName + "\"");
+            response.setContentType("application/octet-stream;charset=UTF-8");
+            ExportParams exportParams = new ExportParams();
+            exportParams.setSheetName(sheetName);
+            Workbook workbook = ExcelExportUtil.exportExcel(exportParams, pojoClass, dataSet);
+            workbook.write(outputStream);
+        } catch (IOException e) {
+            log.error(">>> 导出数据异常：{}", e.getMessage());
+        }
+    }
+}