Добавлены классы для пакетов и паттернов

src/main/java/ru/serega6531/packmate/controller/PatternController.java

@@ -0,0 +1,36 @@
+package ru.serega6531.packmate.controller;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.web.bind.annotation.*;
+import ru.serega6531.packmate.model.Pattern;
+import ru.serega6531.packmate.service.PatternService;
+
+import java.util.List;
+
+@RestController
+@RequestMapping("/api/pattern/")
+public class PatternController {
+
+    private final PatternService service;
+
+    @Autowired
+    public PatternController(PatternService service) {
+        this.service = service;
+    }
+
+    @GetMapping
+    public List<Pattern> getPatterns() {
+        return service.findAll();
+    }
+
+    @DeleteMapping("/{id}")
+    public void deletePattern(@PathVariable int id) {
+        service.deleteById(id);
+    }
+
+    @PostMapping
+    public Pattern addPattern(@RequestBody Pattern pattern) {
+        return service.save(pattern);
+    }
+
+}