web flux write demo

easyexcel-webflux-test/pom.xml

@@ -0,0 +1,33 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+    <parent>
+        <groupId>com.alibaba</groupId>
+        <artifactId>easyexcel-parent</artifactId>
+        <version>3.2.1</version>
+    </parent>
+
+    <artifactId>easyexcel-webflux-test</artifactId>
+
+    <properties>
+        <maven.compiler.source>8</maven.compiler.source>
+        <maven.compiler.target>8</maven.compiler.target>
+        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+    </properties>
+
+    <dependencies>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-webflux</artifactId>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>com.alibaba</groupId>
+            <artifactId>easyexcel-core</artifactId>
+            <scope>test</scope>
+        </dependency>
+    </dependencies>
+
+</project>

easyexcel-webflux-test/src/test/java/com/alibaba/easyexcel/test/webflux/EasyexcelWebfluxApplication.java

@@ -0,0 +1,15 @@
+package com.alibaba.easyexcel.test.webflux;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+/**
+ * @author gxz gongxuanzhangmelt@gmail.com
+ **/
+@SpringBootApplication
+public class EasyexcelWebfluxApplication {
+
+    public static void main(String[] args) {
+        SpringApplication.run(EasyexcelWebfluxApplication.class, args);
+    }
+}

easyexcel-webflux-test/src/test/java/com/alibaba/easyexcel/test/webflux/controller/HelloController.java

@@ -0,0 +1,38 @@
+package com.alibaba.easyexcel.test.webflux.controller;
+
+import com.alibaba.easyexcel.test.webflux.service.HelloService;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.core.io.InputStreamResource;
+import org.springframework.core.io.Resource;
+import org.springframework.http.HttpHeaders;
+import org.springframework.http.MediaType;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.ResponseBody;
+import org.springframework.web.bind.annotation.RestController;
+import reactor.core.publisher.Mono;
+
+
+/**
+ * @author gongxuanzhang
+ **/
+@RestController
+public class HelloController {
+
+    @Autowired
+    private HelloService helloService;
+
+    @GetMapping(value = "/download")
+    @ResponseBody
+    public ResponseEntity<Mono<Resource>> exportExcel() {
+        String fileName = "export.xlsx";
+        return ResponseEntity.ok()
+            .header(HttpHeaders.CONTENT_DISPOSITION, "attachment; filename=" + fileName)
+            .header(HttpHeaders.CONTENT_TYPE, MediaType.APPLICATION_OCTET_STREAM_VALUE)
+            .body(helloService.generateExcel().flatMap(x -> {
+                Resource resource = new InputStreamResource(x);
+                return Mono.just(resource);
+            }));
+    }
+
+}

easyexcel-webflux-test/src/test/java/com/alibaba/easyexcel/test/webflux/entity/DemoData.java

@@ -0,0 +1,21 @@
+package com.alibaba.easyexcel.test.webflux.entity;
+
+import com.alibaba.excel.annotation.ExcelProperty;
+import lombok.Data;
+
+import java.util.Date;
+
+
+/**
+ * @author gongxuanzhang
+ */
+@Data
+public class DemoData {
+    @ExcelProperty("字符串标题")
+    private String string;
+    @ExcelProperty("日期标题")
+    private Date date;
+    @ExcelProperty("数字标题")
+    private Double doubleData;
+}
+

easyexcel-webflux-test/src/test/java/com/alibaba/easyexcel/test/webflux/service/HelloService.java

@@ -0,0 +1,45 @@
+package com.alibaba.easyexcel.test.webflux.service;
+
+import com.alibaba.easyexcel.test.webflux.entity.DemoData;
+import com.alibaba.excel.EasyExcel;
+import com.alibaba.excel.util.ListUtils;
+import org.springframework.stereotype.Component;
+import reactor.core.publisher.Mono;
+import reactor.core.scheduler.Schedulers;
+
+import java.io.ByteArrayInputStream;
+import java.io.ByteArrayOutputStream;
+import java.util.Date;
+import java.util.List;
+
+/**
+ * @author gxz gongxuanzhangmelt@gmail.com
+ **/
+@Component
+public class HelloService {
+
+
+    public Mono<ByteArrayInputStream> generateExcel() {
+        return Mono.fromCallable(() -> {
+            ByteArrayOutputStream stream = new ByteArrayOutputStream();
+            EasyExcel.write(stream, DemoData.class)
+                .sheet("模板")
+                .doWrite(this::data);
+            return new ByteArrayInputStream(stream.toByteArray());
+        }).subscribeOn(Schedulers.boundedElastic());
+    }
+
+    private List<DemoData> data() {
+        List<DemoData> list = ListUtils.newArrayList();
+        for (int i = 0; i < 10; i++) {
+            DemoData data = new DemoData();
+            data.setString("字符串" + i);
+            data.setDoubleData(1.1);
+            data.setDate(new Date());
+            list.add(data);
+        }
+        return list;
+    }
+
+
+}

pom.xml

@@ -16,6 +16,7 @@
         <module>easyexcel-support</module>
         <module>easyexcel-test</module>
         <module>easyexcel</module>
+        <module>easyexcel-webflux-test</module>
     </modules>
 
 
@@ -152,6 +153,11 @@
                 <artifactId>spring-boot-starter-web</artifactId>
                 <version>2.6.3</version>
             </dependency>
+            <dependency>
+                <groupId>org.springframework.boot</groupId>
+                <artifactId>spring-boot-starter-webflux</artifactId>
+                <version>2.6.3</version>
+            </dependency>
             <dependency>
                 <groupId>junit</groupId>
                 <artifactId>junit</artifactId>