Page page，size add default value。

src/main/java/cn/quantgroup/xyqb/controller/req/Page.java

@@ -19,15 +19,13 @@ public class Page {
     /**
      * page
      */
-    @ApiModelProperty("zero-based page index")
-    @NotNull(message = "page不能为空")
-    private Integer page;
+    @ApiModelProperty("one-based page index")
+    private Integer page = 1;
 
     /**
      * size
      */
     @ApiModelProperty("the size of the page to be returned")
-    @NotNull(message = "size不能为空")
     @Range(min = 1, max = 1000, message = "size参数必须在1到1000之间")
-    private Integer size;
+    private Integer size = 30;
 }