小编点评

```java package com.thoth.his.base.util; import java.io.FileInputStream; import java.io.FileOutputStream; import java.io.IOException; import java.util.Base64; public class ImageUtil { public static String FileToBase64(String filePath) throws IOException { // 创建字节输入流 FileInputStream inputStream = null; try { // 获取文件输入流 Base64.Encoder encoder = Base64.getEncoder(); inputStream = new FileInputStream(filePath); int available = inputStream.available(); // 创建字节数组，存储文件内容 byte[] bytes = new byte[available]; // 读取文件内容并编码为 Base64 字符串 inputStream.read(bytes); return encoder.encodeToString(bytes); } catch (Exception e) { // 处理异常 e.printStackTrace(); return null; } finally { // 关闭输入流 inputStream.close(); } } public static boolean Base64ToFile(String base64Str, String saveFilePath) throws IOException { // 创建字节输出流 FileOutputStream outputStream = null; try { // 创建文件输出流 Base64.Decoder decoder = Base64.getDecoder(); byte[] bytes = decoder.decode(base64Str); // 创建文件输出流 outputStream = new FileOutputStream(saveFilePath); // 写入字节数组到文件输出流 outputStream.write(bytes); return true; } catch (Exception e) { // 处理异常 e.printStackTrace(); return false; } finally { // 关闭输出流 outputStream.close(); } } } ```

正文

Java 图片、文件 Base64 互转

package com.thoth.his.base.util;

import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.Base64;

public class ImageUtil {

    public static String FileToBase64(String filePath) throws IOException {
        FileInputStream inputStream = null;
        try {
            Base64.Encoder encoder = Base64.getEncoder();
            inputStream = new FileInputStream(filePath);
            int available = inputStream.available();
            byte[] bytes = new byte[available];
            inputStream.read(bytes);
            return encoder.encodeToString(bytes);
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            inputStream.close();
        }
        return "";
    }

    public static boolean Base64ToFile(String base64Str, String saveFilePath) throws IOException {
        FileOutputStream outputStream = null;
        try {
            Base64.Decoder decoder = Base64.getDecoder();
            byte[] bytes = decoder.decode(base64Str);
            outputStream = new FileOutputStream(saveFilePath);
            outputStream.write(bytes);
            return true;
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            outputStream.close();
        }
        return false;
    }
}