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Aliyun Open API SDK for Java
Copyright (C) Alibaba Cloud Computing
All rights reserved.
版权所有 (C)阿里云计算有限公司
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package com.aliyun.dc.opplat.sdk.api;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import com.aliyun.dc.opplat.sdk.api.internal.util.OpplatUtils;
/**
* 文件元数据。 暂不支持文件格式
*
* @author changlei.qcl
* @version $Id: FileItem.java, v 0.1 2020年07月28日 9:12 PM changlei.qcl Exp $
*/
public class FileItem {
private String fileName;
private String mimeType;
private byte[] content;
private File file;
/**
* 基于本地文件的构造器。
*
* @param file 本地文件
*/
public FileItem(File file) {
this.file = file;
}
/**
* 基于文件绝对路径的构造器。
*
* @param filePath 文件绝对路径
*/
public FileItem(String filePath) {
this(new File(filePath));
}
/**
* 基于文件名和字节流的构造器。
*
* @param fileName 文件名
* @param content 文件字节流
*/
public FileItem(String fileName, byte[] content) {
this.fileName = fileName;
this.content = content;
}
/**
* 基于文件名、字节流和媒体类型的构造器。
*
* @param fileName 文件名
* @param content 文件字节流
* @param mimeType 媒体类型
*/
public FileItem(String fileName, byte[] content, String mimeType) {
this(fileName, content);
this.mimeType = mimeType;
}
public String getFileName() {
if (this.fileName == null && this.file != null && this.file.exists()) {
this.fileName = file.getName();
}
return this.fileName;
}
public String getMimeType() throws IOException {
if (this.mimeType == null) {
this.mimeType = OpplatUtils.getMimeType(getContent());
}
return this.mimeType;
}
public byte[] getContent() throws IOException {
if (this.content == null && this.file != null && this.file.exists()) {
InputStream in = null;
ByteArrayOutputStream out = null;
try {
in = new FileInputStream(this.file);
out = new ByteArrayOutputStream();
int ch;
while ((ch = in.read()) != -1) {
out.write(ch);
}
this.content = out.toByteArray();
} finally {
if (out != null) {
out.close();
}
if (in != null) {
in.close();
}
}
}
return this.content;
}
}
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