From a8c9f2126cbef4c4a1f2d3c2098ccf52637bcdef Mon Sep 17 00:00:00 2001
From: wucongxing8150 <815046773@qq.com>
Date: Fri, 1 Aug 2025 11:02:30 +0800
Subject: [PATCH] =?UTF-8?q?=E4=BF=AE=E6=94=B9=E4=BA=86=E8=B5=84=E6=BA=90?=
 =?UTF-8?q?=E8=B7=AF=E5=BE=841?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../example/caseData/service/CertService.java |  3 ++-
 .../com/example/caseData/utils/ImageUtil.java | 23 +++++++++++--------
 2 files changed, 15 insertions(+), 11 deletions(-)

diff --git a/src/main/java/com/example/caseData/service/CertService.java b/src/main/java/com/example/caseData/service/CertService.java
index 8c4c421..952b016 100644
--- a/src/main/java/com/example/caseData/service/CertService.java
+++ b/src/main/java/com/example/caseData/service/CertService.java
@@ -18,6 +18,7 @@ import java.text.SimpleDateFormat;
 import java.io.File;
 import java.util.Date;
 import java.util.Objects;
+import org.springframework.core.io.ClassPathResource;
 
 @Service
 public class CertService  {
@@ -34,7 +35,7 @@ public class CertService  {
     ){
         try {
             // 加载背景模板图片
-            BufferedImage background = ImageIO.read(new File("static/cert/template.png"));
+            BufferedImage background = ImageIO.read(new ClassPathResource("static/cert/template.png").getInputStream());
 
             Graphics2D g2d = (Graphics2D) background.getGraphics();
             g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
diff --git a/src/main/java/com/example/caseData/utils/ImageUtil.java b/src/main/java/com/example/caseData/utils/ImageUtil.java
index 4e21d94..d303018 100644
--- a/src/main/java/com/example/caseData/utils/ImageUtil.java
+++ b/src/main/java/com/example/caseData/utils/ImageUtil.java
@@ -1,19 +1,22 @@
 package com.example.caseData.utils;
 
-import java.io.File;
-import java.io.FileInputStream;
-import java.io.IOException;
+import org.springframework.core.io.ClassPathResource;
+
+import java.io.*;
 
 public class ImageUtil {
     public static byte[] readImageToBytes(String imagePath) throws IOException {
-        File file = new File(imagePath);
-        try (FileInputStream fis = new FileInputStream(file)) {
-            byte[] bytes = new byte[(int) file.length()];
-            int read = fis.read(bytes);
-            if (read != bytes.length) {
-                throw new IOException("读取文件长度不一致");
+        ClassPathResource resource = new ClassPathResource(imagePath);
+        try (InputStream inputStream = resource.getInputStream();
+             ByteArrayOutputStream outputStream = new ByteArrayOutputStream()) {
+
+            byte[] buffer = new byte[1024];
+            int bytesRead;
+            while ((bytesRead = inputStream.read(buffer)) != -1) {
+                outputStream.write(buffer, 0, bytesRead);
             }
-            return bytes;
+
+            return outputStream.toByteArray();
         }
     }
 }