fix: use okhttp3 to fix bad request error

pom.xml

@@ -116,5 +116,10 @@
             <artifactId>configurate-yaml</artifactId>
             <version>4.2.0-SNAPSHOT</version>
         </dependency>
+        <dependency>
+            <groupId>com.squareup.okhttp3</groupId>
+            <artifactId>okhttp</artifactId>
+            <version>4.12.0</version>
+        </dependency>
     </dependencies>
 </project>

src/main/java/com/github/hank9999/useblessingskin/shared/httpMethods.java

@@ -1,34 +1,33 @@
 package com.github.hank9999.useblessingskin.shared;
 
+import okhttp3.*;
+import okhttp3.Response;
+
 import javax.imageio.ImageIO;
 import java.awt.image.BufferedImage;
 import java.io.*;
-import java.net.HttpURLConnection;
 import java.net.URL;
 
 final public class httpMethods {
+    private static final OkHttpClient client = new OkHttpClient();
+
     public static String getUrl(String url) throws Exception {
-        URL obj = new URL(url);
-        HttpURLConnection con = (HttpURLConnection) obj.openConnection();
-        con.setRequestMethod("GET");
-        con.setRequestProperty("User-Agent", "UseBlessingSkinPlugin/1.0");
-        con.setConnectTimeout(10000);
-        con.setReadTimeout(10000);
-        con.setDoOutput(true);
-        int responseCode = con.getResponseCode();
-        if (responseCode == 404 || responseCode == 204) {
-            return null;
-        }
-        BufferedReader in = new BufferedReader(
-                new InputStreamReader(con.getInputStream()));
-        String inputLine;
-        StringBuilder response = new StringBuilder();
+        Request request = new Request.Builder()
+                .url(url)
+                .header("User-Agent", "UseBlessingSkinPlugin/1.0")
+                .build();
 
-        while ((inputLine = in.readLine()) != null) {
-            response.append(inputLine);
+        try (Response response = client.newCall(request).execute()) {
+            if (response.code() == 404 || response.code() == 204) {
+                return null;
+            }
+
+            if (!response.isSuccessful()) {
+                throw new IOException("HTTP error code: " + response.code() + " | " + response.message());
+            }
+
+            return response.body() != null ? response.body().string() : null;
         }
-        in.close();
-        return response.toString();
     }
 
     public static boolean getPicture(String urlHttp, String path, String picName) throws Exception {
@@ -54,75 +53,29 @@ public static boolean getPicture(String urlHttp, String path, String picName) th
     }
 
     public static String postPic(String urlHttp, String picName, String picPath) throws Exception {
-
-        String BOUNDARY = "========7d4a6d158c9";
-
-        URL url = new URL(urlHttp);
-        HttpURLConnection conn = (HttpURLConnection) url.openConnection();
-
-        // 设置POST请求
-        conn.setRequestMethod("POST");
-        conn.setDoOutput(true);
-        conn.setDoInput(true);
-        conn.setUseCaches(false);
-
-        // 设置header参数
-        conn.setRequestProperty("User-Agent", "UseBlessingSkinPlugin/1.0");
-        conn.setRequestProperty("connection", "Keep-Alive");
-        conn.setRequestProperty("Charset", "UTF-8");
-        conn.setRequestProperty("Content-Type", "multipart/form-data; boundary=" + BOUNDARY);
-
-        OutputStream out = new DataOutputStream(conn.getOutputStream());
-
-        // 文件
-        File file = new File(picPath);
-
-        // 构建Body Header
-        String PostBody = "--" +
-                BOUNDARY +
-                "\r\n" +
-                "Content-Disposition: form-data; name=\"file\"; filename=\"" + picName + "\"" + "\r\n" +
-                "Content-Type: image/png" +
-                "\r\n" +
-                "\r\n";
-
-        // 将Body Header写入输出流
-        out.write(PostBody.getBytes());
-
-        // 读取文件数据
-        DataInputStream in = new DataInputStream(new FileInputStream(
-                file));
-
-        // 每次读1KB
-        byte[] bufferOut = new byte[1024];
-        int bytes;
-
-        // 写入输出流
-        while ((bytes = in.read(bufferOut)) != -1) {
-            out.write(bufferOut, 0, bytes);
+        File filePath = new File(picPath);
+        MediaType mediaType = MediaType.parse("image/png");
+
+        // 构建请求体
+        MultipartBody requestBody = new MultipartBody.Builder()
+                .setType(MultipartBody.FORM)
+                .addFormDataPart("file", picName, RequestBody.create(filePath, mediaType))
+                .build();
+
+        // 构建请求
+        Request request = new Request.Builder()
+                .url(urlHttp)
+                .post(requestBody)
+                .addHeader("User-Agent", "UseBlessingSkinPlugin/1.0")
+                .build();
+
+        // 执行请求并获取响应
+        try (Response response = client.newCall(request).execute()) {
+            if (!response.isSuccessful()) {
+                throw new IOException("HTTP error code: " + response.code() + " | " + response.message());
+            }
+
+            return response.body() != null ? response.body().string() : "{}";
         }
-
-        // 添加换行
-        out.write("\r\n".getBytes());
-        in.close();
-
-        // 定义结尾数据分割线。
-        byte[] end_data = ("\r\n" + "--" + BOUNDARY + "--" + "\r\n").getBytes();
-
-        // 添加结尾标识
-        out.write(end_data);
-        out.flush();
-        out.close();
-
-        // 定义BufferedReader输入流来读取URL的响应
-        BufferedReader reader = new BufferedReader(new InputStreamReader(
-                conn.getInputStream()));
-        String line;
-        StringBuilder response = new StringBuilder();
-        while ((line = reader.readLine()) != null) {
-            response.append(line);
-        }
-
-        return response.toString();
     }
-}
+}