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auth/src/main/java/com/example/springboot4/util/RsaKeyLoader.java

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+package com.example.springboot4.util;
+
+
+import org.springframework.util.ResourceUtils;
+
+import java.io.FileInputStream;
+import java.io.IOException;
+import java.io.ObjectInputStream;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.Paths;
+import java.security.PrivateKey;
+import java.security.PublicKey;
+
+/**
+ * RSA密钥加载器
+ * 用于从本地文件加载RSA密钥对
+ */
+public class RsaKeyLoader {
+
+    /**
+     * 从指定路径加载私钥
+     *
+     * @param privateKeyPath 私钥文件路径
+     * @return PrivateKey 私钥对象
+     * @throws IOException            IO异常
+     * @throws ClassNotFoundException 类未找到异常
+     */
+    public static PrivateKey loadPrivateKey(String privateKeyPath) throws IOException, ClassNotFoundException {
+        try (ObjectInputStream ois = new ObjectInputStream(Files.newInputStream(Path.of(privateKeyPath)))) {
+            return (PrivateKey) ois.readObject();
+        }
+    }
+
+    /**
+     * 从指定路径加载公钥
+     *
+     * @param publicKeyPath 公钥文件路径
+     * @return PublicKey 公钥对象
+     * @throws IOException            IO异常
+     * @throws ClassNotFoundException 类未找到异常
+     */
+    public static PublicKey loadPublicKey(String publicKeyPath) throws IOException, ClassNotFoundException {
+        try (ObjectInputStream ois = new ObjectInputStream(Files.newInputStream(Path.of(publicKeyPath)))) {
+            return (PublicKey) ois.readObject();
+        }
+    }
+}