BAEL-4088: added source files.

spring-multipart-file/pom.xml

@@ -0,0 +1,37 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+    xmlns="http://maven.apache.org/POM/4.0.0"
+    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>
+    <artifactId>spring-multipart-file</artifactId>
+    <version>0.0.1-SNAPSHOT</version>
+    <name>spring-multipart-file</name>
+
+    <parent>
+        <groupId>com.baeldung</groupId>
+        <artifactId>parent-spring-5</artifactId>
+        <version>0.0.1-SNAPSHOT</version>
+        <relativePath>../parent-spring-5</relativePath>
+    </parent>
+
+    <dependencies>
+        <dependency>
+            <groupId>org.springframework</groupId>
+            <artifactId>spring-web</artifactId>
+            <version>${spring.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework</groupId>
+            <artifactId>spring-mock</artifactId>
+            <version>2.0.8</version>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>junit</groupId>
+            <artifactId>junit</artifactId>
+            <version>4.12</version>
+            <scope>test</scope>
+        </dependency>
+    </dependencies>
+
+</project>

spring-multipart-file/src/main/resources/targetFile.tmp

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+Hello World

spring-multipart-file/src/test/java/com/baeldung/multipart/file/ConvertMultipartFileExample.java

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+package com.baeldung.multipart.file;
+
+import java.io.File;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.OutputStream;
+
+import org.junit.Test;
+import org.springframework.mock.web.MockMultipartFile;
+import org.springframework.web.multipart.MultipartFile;
+
+public class ConvertMultipartFileExample {
+
+    @Test
+    public void whenGetBytes_thenOK() throws IOException {
+        MultipartFile multipartFile = new MockMultipartFile("sourceFile.tmp", "Hello World".getBytes());
+
+        File file = new File("src/main/resources/targetFile.tmp");
+
+        OutputStream os = new FileOutputStream(file);
+
+        os.write(multipartFile.getBytes());
+
+        os.close();
+    }
+
+    @Test
+    public void whenGetInputStream_thenOK() throws IOException {
+        MultipartFile multipartFile = new MockMultipartFile("sourceFile.tmp", "Hello World".getBytes());
+
+        InputStream initialStream = multipartFile.getInputStream();
+        byte[] buffer = new byte[initialStream.available()];
+        initialStream.read(buffer);
+
+        File targetFile = new File("src/main/resources/targetFile.tmp");
+        OutputStream outStream = new FileOutputStream(targetFile);
+        outStream.write(buffer);
+
+        outStream.close();
+    }
+
+    @Test
+    public void whenTransferTo_thenOK() throws IllegalStateException, IOException {
+        MultipartFile multipartFile = new MockMultipartFile("sourceFile.tmp", "Hello World".getBytes());
+
+        File file = new File("src/main/resources/targetFile.tmp");
+
+        multipartFile.transferTo(file);
+    }
+}