Java代码如何将InputStream转换为File对象呢?

下文笔者讲述将InputStream转换为file对象的方法分享,如下所示

实现思路：
    方式1:
	   将InputStream复制到FileOutputStream
    方式2:
	   使用Apache Commons IO中的FileUtils.copyInputStreamToFile
    方式3:
	   使用Java 1.7 NIO Files.copy

例:inputstream转换为file对象的示例分享

InputStreamToFile.java
package com.java265;
 
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.URI;
 
public class InputStreamToFile {
    private static final String FILE_TO = "d:\\test\\test.txt";
    public static void main(String[] args) throws IOException { 
        URI u = URI.create("https://www.java265.com/");
        try (InputStream inputStream = u.toURL().openStream()) {
            File file = new File(FILE_TO);
            copyInputStreamToFile(inputStream, file);
        }
    }
 
    // InputStream -> File
    private static void copyInputStreamToFile(InputStream inputStream, File file) 
		throws IOException {
 
        try (FileOutputStream outputStream = new FileOutputStream(file)) {
 
            int read;
            byte[] bytes = new byte[1024];
            while ((read = inputStream.read(bytes)) != -1) {
                outputStream.write(bytes, 0, read);
            }
        }
    }
}

2. Apache Commons IO 2.1 FileUtils.copyInputStreamToFile在Apache Commons IO中可用 pom.xml <dependency> <groupId>commons-io</groupId> <artifactId>commons-io</artifactId> <version>2.6</version> </dependency> InputStreamToFile2.java package com.java265; import org.apache.commons.io.FileUtils; import java.io.File; import java.io.IOException; import java.io.InputStream; import java.net.URI; public class InputStreamToFile2 { private static final String FILE_TO = "d:\\test\\test.txt"; public static void main(String[] args) throws IOException { URI u = URI.create("https://www.java265.com/"); try (InputStream inputStream = u.toURL().openStream()) { File file = new File(FILE_TO); // commons-io FileUtils.copyInputStreamToFile(inputStream, file); } } } 3. Java 1.7 NIO 将inputStream保存到某个文件中 可使用Java 1.7 NIO Files.copy InputStreamToFile3.java package com.java265; import java.io.IOException; import java.io.InputStream; import java.net.URI; import java.nio.file.Files; import java.nio.file.Paths; public class InputStreamToFile3 { private static final String FILE_TO = "d:\\test\\test.txt"; public static void main(String[] args) throws IOException { URI u = URI.create("https://www.java265.com/"); try (InputStream inputStream = u.toURL().openStream()) { //Java 1.7 Files.copy(inputStream, Paths.get(FILE_TO)); } } }