增加获取patch接口，未测试

src/main/java/com/mir4updater/backend/controller/apk/CheckPatchController.java

@@ -1,13 +1,25 @@
 package com.mir4updater.backend.controller.apk;
 
+import com.mir4updater.backend.entity.PatchFileInfo;
+import com.mir4updater.backend.result.Result;
+import com.mir4updater.backend.service.DiffPathService;
 import org.apache.logging.log4j.LogManager;
-import org.springframework.web.bind.annotation.RestController;
-
 import org.apache.logging.log4j.Logger;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RequestParam;
+import org.springframework.web.bind.annotation.RestController;
 
 @RestController
 public class CheckPatchController {
     public static Logger logger = LogManager.getLogger(CheckPatchController.class);
 
+    @Autowired
+    DiffPathService diffPathService;
 
+    @GetMapping("/android/check_patch")
+    public Result checkPatch(@RequestParam("pkg") String pkg, @RequestParam(value = "version_code") Long versionCode) {
+        PatchFileInfo patchFileInfo = diffPathService.getPatchInfo(pkg, versionCode);
+        return Result.success(patchFileInfo);
+    }
 }

src/main/java/com/mir4updater/backend/entity/PatchFileInfo.java

@@ -20,7 +20,7 @@ public class PatchFileInfo implements Serializable {
     String packageName;
 
     @Column(name = "old_version", nullable = false)
-    long old_version;
+    long oldVersion;
 
     @Column(name = "old_md5", nullable = false)
     String old_md5;
@@ -32,7 +32,7 @@ public class PatchFileInfo implements Serializable {
     String old_sha256;
 
     @Column(name = "new_version", nullable = false)
-    long new_version;
+    long newVersion;
 
     @Column(name = "new_md5", nullable = false)
     String new_md5;

src/main/java/com/mir4updater/backend/repository/PatchInfoRepository.java

@@ -1,7 +1,9 @@
 package com.mir4updater.backend.repository;
 
-import com.mir4updater.backend.entity.ApkInfo;
+import com.mir4updater.backend.entity.PatchFileInfo;
 import org.springframework.data.jpa.repository.JpaRepository;
 
-//public class PatchInfoRepository extends JpaRepository<ApkInfo, Long> {
-//}
+public interface PatchInfoRepository extends JpaRepository<PatchFileInfo, Long> {
+    public PatchFileInfo findPatchFileInfoByPackageNameAndOldVersion(String packageName, Long version);
+
+}

src/main/java/com/mir4updater/backend/service/DiffPathService.java

@@ -1,8 +1,17 @@
 package com.mir4updater.backend.service;
 
+import com.mir4updater.backend.entity.PatchFileInfo;
+import com.mir4updater.backend.repository.PatchInfoRepository;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Service;
 
 @Service
 public class DiffPathService {
+    @Autowired
+    PatchInfoRepository patchInfoRepository;
+
+    public PatchFileInfo getPatchInfo(String packageName, Long oldVersion) {
+        return patchInfoRepository.findPatchFileInfoByPackageNameAndOldVersion(packageName, oldVersion);
+    }
 
 }