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package cokr.xit.fims.nxrp.web;
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import java.io.IOException;
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import java.math.BigInteger;
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import java.net.URI;
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import java.net.http.HttpClient;
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import java.net.http.HttpRequest;
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import java.net.http.HttpResponse;
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import java.nio.charset.StandardCharsets;
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import java.nio.file.Files;
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import java.nio.file.Path;
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import java.nio.file.Paths;
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import java.util.ArrayList;
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import java.util.HashMap;
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import java.util.List;
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import java.util.Map;
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import java.util.Random;
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public class MultipartTest {
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HttpClient httpClient;
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HttpRequest httpRequest;
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HttpResponse<String> httpResponse;
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protected final Map<Object, Object> map = new HashMap<>();
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private static final String LINEFEED = "\r\n";
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private static final String DOUBLE_HYPHEN = "--";
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private static final String QUTATE = "\"";
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public void fileDown(String url, String downloadPath) throws IOException {
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httpClient = HttpClient.newHttpClient();
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httpRequest = HttpRequest.newBuilder()
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.uri(URI.create(url))
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.setHeader("Accept-Language", "ko")
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.setHeader("Content-Type", "application/json")
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.GET()
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.build();
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try {
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HttpResponse<Path> getResponse = httpClient.send(httpRequest, HttpResponse.BodyHandlers.ofFile(Paths.get(downloadPath)));
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} catch (InterruptedException e) {
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e.printStackTrace();
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}
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}
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public void multipartPost(String sendFilePath, String fileSavePath, String sendUri) throws IOException {
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Path path = Path.of(sendFilePath);
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BigInteger randomNumber = new BigInteger(256, new Random());
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StringBuilder boundary = new StringBuilder().append(randomNumber);
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map.put("fileSavePath", fileSavePath);
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map.put("file", path);
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httpClient = HttpClient.newHttpClient();
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multipartToByte(map, boundary.toString());
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httpRequest = HttpRequest.newBuilder()
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.uri(URI.create(sendUri))
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.setHeader("Accept-Language", "ko")
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.setHeader("Content-Type", "multipart/form-data; boundary=" + boundary)
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.POST(multipartToByte(map, boundary.toString()))
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.build();
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try {
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HttpResponse<String> response = httpClient.send(httpRequest, HttpResponse.BodyHandlers.ofString());
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} catch (InterruptedException e) {
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e.printStackTrace();
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}
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}
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private HttpRequest.BodyPublisher multipartToByte (Map<Object, Object> map, String boundary) throws IOException {
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List<byte[]> byteArrays = new ArrayList<>();
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StringBuilder stringBuilder = new StringBuilder();
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for (Map.Entry<Object, Object> data : map.entrySet()) {
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stringBuilder.setLength(0);
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stringBuilder.append(DOUBLE_HYPHEN)
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.append(boundary)
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.append(LINEFEED);
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if (data.getValue() instanceof Path) {
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Path filePath = (Path)data.getValue();
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String mimeType = Files.probeContentType(filePath);
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byte[] fileByte = Files.readAllBytes(filePath);
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stringBuilder.append("Content-Disposition: form-data; name=")
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.append(QUTATE)
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.append(data.getKey())
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.append(QUTATE)
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.append("; filename= ")
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.append(QUTATE)
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.append(data.getValue())
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.append(QUTATE)
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.append(LINEFEED)
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.append("Content-Type: ")
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.append(mimeType)
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.append(LINEFEED)
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.append(LINEFEED);
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byteArrays.add(stringBuilder.toString().getBytes(StandardCharsets.UTF_8));
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byteArrays.add(fileByte);
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byteArrays.add(LINEFEED.getBytes(StandardCharsets.UTF_8));
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} else {
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stringBuilder.append("Content-Disposition: form-data; name=")
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.append(QUTATE)
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.append(data.getKey())
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.append(QUTATE)
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.append(";")
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.append(LINEFEED)
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.append(LINEFEED)
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.append(data.getValue())
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.append(LINEFEED);
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byteArrays.add(stringBuilder.toString().getBytes(StandardCharsets.UTF_8));
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}
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}
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stringBuilder.setLength(0);
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stringBuilder.append(DOUBLE_HYPHEN)
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.append(boundary)
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.append(DOUBLE_HYPHEN);
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byteArrays.add(stringBuilder.toString().getBytes(StandardCharsets.UTF_8));
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return HttpRequest.BodyPublishers.ofByteArrays(byteArrays);
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}
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}
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