package com.jsy.basic.util.utils;
import org.apache.commons.io.IOUtils;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.entity.ContentType;
import org.springframework.mock.web.MockMultipartFile;
import org.springframework.util.StringUtils;
import org.springframework.web.multipart.MultipartFile;
import java.io.*;
import java.util.Base64;
import java.util.Base64.Decoder;
import java.util.Base64.Encoder;
import java.util.HashMap;
import java.util.Map;
/**
* @author chq459799974
* @description Base64工具类
* @since 2021-01-29 10:06
**/
public class Base64Util {
/**
* @Description: base64转文件
* @Param: [file64Str, outPath]
* @Return: boolean
* @Author: chq459799974
* @Date: 2021/1/29
**/
public static boolean base64StrToFile(String file64Str, String outPath) {
if (file64Str == null)
return false;
Decoder decoder = Base64.getDecoder();
try {
// 解密
byte[] b = decoder.decode(file64Str);
// 处理数据
for (int i = 0; i < b.length; ++i) {
if (b[i] < 0) {
b[i] += 256;
}
}
// 文件夹不存在则自动创建
File tempFile = new File(outPath);
if (!tempFile.getParentFile().exists()) {
tempFile.getParentFile().mkdirs();
}
OutputStream out = new FileOutputStream(tempFile);
out.write(b);
out.flush();
out.close();
return true;
} catch (Exception e) {
return false;
}
}
/**
* @Description: base64转MultipartFile
* @Param: [base64Str]
* @Return: org.springframework.web.multipart.MultipartFile
* @Author: chq459799974
* @Date: 2021-08-02
**/
public static MultipartFile base64StrToMultipartFile(String base64Str){
if (StringUtils.isEmpty(base64Str)){
return null;
}
Decoder decoder = Base64.getDecoder();
MultipartFile multipartFile = null;
try {
// 解密
byte[] b = decoder.decode(base64Str);
multipartFile = new MockMultipartFile("file.png", b);
} catch (Exception e) {
e.printStackTrace();
}
return multipartFile;
}
/**
* @Description: 文件转base64(路径入参)
* @Param: [filePath]
* @Return: java.lang.String
* @Author: chq459799974
* @Date: 2021/1/29
**/
public static String fileToBase64Str(String filePath) {
InputStream inputStream;
byte[] data = null;
try {
inputStream = new FileInputStream(filePath);
data = new byte[inputStream.available()];
inputStream.read(data);
inputStream.close();
} catch (IOException e) {
e.printStackTrace();
}
// 加密
Encoder encoder = Base64.getEncoder();
return encoder.encodeToString(data);
}
/**
* @Description: 文件转base64(文件入参)
* @Param: [file]
* @Return: java.lang.String
* @Author: chq459799974
* @Date: 2021/1/29
**/
public static String fileToBase64Str(MultipartFile file) {
InputStream inputStream;
byte[] data = null;
try {
inputStream = file.getInputStream();
data = new byte[inputStream.available()];
inputStream.read(data);
inputStream.close();
} catch (IOException e) {
e.printStackTrace();
}
// 加密
Encoder encoder = Base64.getEncoder();
return encoder.encodeToString(data);
}
/**
* @Description: byte转Base64
* @Param: [data]
* @Return: java.lang.String
* @Author: chq459799974
* @Date: 2021/1/29
**/
public static String byteToBase64(byte[] data){
// 加密
Encoder encoder = Base64.getEncoder();
return encoder.encodeToString(data);
}
/**
* @Description: 网络文件转Base64
* @Param: [netPicUrl]
* @Return: java.lang.String
* @Author: chq459799974
* @Date: 2021/1/29
**/
public static String netFileToBase64(String netFileUrl){
HttpGet httpGet = MyHttpUtils.httpGetWithoutParams(netFileUrl);
byte[] data = (byte[]) MyHttpUtils.exec(httpGet,MyHttpUtils.ANALYZE_TYPE_BYTE);
return byteToBase64(data);
}
public static void main(String[] args) {
String base64Str = fileToBase64Str("E:/video/VID_20210223_134106.mp4");
System.out.println(base64Str);
boolean b = base64StrToFile(base64Str, "E:/video/转出结果.mp4");
System.out.println(b);
}
}