initial commit

src/main/java/com/bb/config/RequestDecryptWrapper.java

@@ -0,0 +1,86 @@
+package com.bb.config;
+
+import java.io.BufferedReader;
+import java.io.ByteArrayInputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.InputStreamReader;
+import java.nio.charset.Charset;
+import java.nio.charset.StandardCharsets;
+
+import jakarta.servlet.ReadListener;
+import jakarta.servlet.ServletInputStream;
+import jakarta.servlet.http.HttpServletRequest;
+import jakarta.servlet.http.HttpServletRequestWrapper;
+
+import org.apache.commons.io.IOUtils;
+import org.springframework.util.ObjectUtils;
+
+import com.bb.util.AESUtil;
+
+import lombok.extern.slf4j.Slf4j;
+
+@Slf4j
+public class RequestDecryptWrapper extends HttpServletRequestWrapper {
+
+	private final Charset encoding;
+	private String decodingBody;
+	private byte[] rawData;
+	
+	public RequestDecryptWrapper(HttpServletRequest request) {
+		super(request);
+		String charEncoding = request.getCharacterEncoding();
+		this.encoding = ObjectUtils.isEmpty(charEncoding) ? StandardCharsets.UTF_8 : Charset.forName(charEncoding);
+		
+		try {
+			InputStream inputStream = request.getInputStream();
+			rawData = IOUtils.toByteArray(inputStream);
+			
+			if (ObjectUtils.isEmpty(rawData)) {
+				return;
+			}
+			
+			AESUtil aesUtil = new AESUtil();
+			this.decodingBody = aesUtil.decrypt(new String(rawData, StandardCharsets.UTF_8));
+		} catch (IOException e) {
+			log.error(e.getMessage());
+		}
+	}
+
+	@Override
+	public ServletInputStream getInputStream() {
+		final ByteArrayInputStream byteArrayInputStream = new ByteArrayInputStream(decodingBody == null ? "".getBytes(encoding) : decodingBody.getBytes(encoding));
+		return new ServletInputStream() {
+
+			@Override
+			public boolean isFinished() {
+				// TODO Auto-generated method stub
+				return false;
+			}
+
+			@Override
+			public boolean isReady() {
+				// TODO Auto-generated method stub
+				return false;
+			}
+
+			@Override
+			public void setReadListener(ReadListener listener) {
+				// TODO Auto-generated method stub
+				
+			}
+
+			@Override
+			public int read() throws IOException {
+				// TODO Auto-generated method stub
+				return byteArrayInputStream.read();
+			}
+			
+		};
+	}
+	
+	@Override
+	public BufferedReader getReader() {
+		return new BufferedReader(new InputStreamReader(this.getInputStream()));
+	}
+}