refactor(tianting): 修改查询就餐人的接口为 POST 方法

@@ -20,6 +20,7 @@ import org.springframework.validation.annotation.Validated;
 import org.springframework.web.bind.annotation.DeleteMapping;
 import org.springframework.web.bind.annotation.GetMapping;
 import org.springframework.web.bind.annotation.PatchMapping;
+import org.springframework.web.bind.annotation.PostMapping;
 import org.springframework.web.bind.annotation.PutMapping;
 import org.springframework.web.bind.annotation.RequestAttribute;
 import org.springframework.web.bind.annotation.RequestBody;
@@ -66,7 +67,7 @@ public class DinerController {
     }
 
     @ApiOperation(value = "根据学校，班级和学号查询就餐人")
-    @GetMapping("/client/{clientId}/gradeclass/{gradeClassId}/diner")
+    @PostMapping("/client/{clientId}/gradeclass/{gradeClassId}/diner")
     @ResponseStatus(HttpStatus.OK)
     public DinerVO getClientClassDiner(@RequestAttribute(INJECTED_CLIENT) final SingleClientRpcResponse client,
                                        @RequestAttribute(INJECTED_GRADE_CLASS) final SingleGradeClassRpcResponse gradeClass,