从文件中读取数据并编码成base64 java
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代码如下:
import java.io.FileInputStream;
import java.io.IOException;
import java.util.Arrays;
import java.util.Base64;
import java.util.Base64.Encoder;
public class App {
public static void main(String[] args) throws IOException {
Encoder encoder = Base64.getEncoder();
byte[] buffer = new byte[1024];
int len = 0;
StringBuilder builder = new StringBuilder();
try (FileInputStream inputStream = new FileInputStream("d:\\temp\\abc.txt")) {
while ((len = inputStream.read(buffer)) != -1) {
byte[] src = Arrays.copyOfRange(buffer, 0, len);
builder.append(encoder.encodeToString(src));
}
}
System.out.println(builder.toString());
}
}
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