refactor code

src/main/java/com/peanut/modules/book/controller/ExpressController.java

@@ -0,0 +1,39 @@
+package com.peanut.modules.book.controller;
+
+import com.peanut.common.utils.R;
+import com.peanut.modules.book.service.ExpressCompanyService;
+import com.peanut.modules.book.vo.ExpressCompanyVo;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+import java.util.List;
+
+/**
+ * @Description: 快递 Controller
+ * @Author: Cauchy
+ * @CreateTime: 2023/10/16
+ */
+@RestController
+@RequestMapping("/express")
+public class ExpressController {
+
+    private final ExpressCompanyService expressCompanyService;
+
+    /**
+     * 获取快递公司列表
+     *
+     * @return R
+     */
+    @RequestMapping(path = "/getExpressCompanyList")
+    public R getExpressCompanyList() {
+        List<ExpressCompanyVo> expressCompanyList = expressCompanyService.getExpressCompanyList();
+        return R.ok().put("result", expressCompanyList);
+    }
+
+    @Autowired
+    ExpressController(ExpressCompanyService expressCompanyService) {
+        this.expressCompanyService = expressCompanyService;
+    }
+
+}