6-11 集成 Validation 参数校验功能，并完成对ebook查询的参数校验

pom.xml

@@ -74,6 +74,11 @@
             <version>1.2.13</version>
         </dependency>
 
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-validation</artifactId>
+        </dependency>
+
     </dependencies>
 
     <dependencyManagement>

src/main/java/io/github/yubincloud/fairywiki/controller/ControllerExceptionHandler.java

+package io.github.yubincloud.fairywiki.controller;
+
+import io.github.yubincloud.fairywiki.dto.resp.ErrorCode;
+import io.github.yubincloud.fairywiki.dto.resp.RestfulModel;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.validation.BindException;
+import org.springframework.web.bind.annotation.ControllerAdvice;
+import org.springframework.web.bind.annotation.ExceptionHandler;
+import org.springframework.web.bind.annotation.ResponseBody;
+
+@ControllerAdvice
+public class ControllerExceptionHandler {
+
+    private static final Logger LOG = LoggerFactory.getLogger(ControllerExceptionHandler.class);
+
+    /**
+     * 统一处理参数校验异常
+     * @param e 捕捉到的异常
+     */
+    @ExceptionHandler(value = BindException.class)
+    @ResponseBody
+    public RestfulModel<Object> validExceptionHandler(BindException e) {
+        String exceptionMsg = e.getBindingResult().getAllErrors().get(0).getDefaultMessage();
+        LOG.warn("参数校验失败：{}", exceptionMsg);
+        return new RestfulModel<>(ErrorCode.ARGS_VALIDATION_ERROR, exceptionMsg, null);
+    }
+}

src/main/java/io/github/yubincloud/fairywiki/controller/EbookController.java

@@ -11,6 +11,7 @@ import io.github.yubincloud.fairywiki.service.EbookService;
 import org.springframework.web.bind.annotation.*;
 
 import javax.annotation.Resource;
+import javax.validation.Valid;
 import java.util.List;
 
 @RestController
@@ -24,7 +25,7 @@ public class EbookController {
      * 获取全部的电子书信息
      */
     @GetMapping("/list")
-    public RestfulModel<PageRespDto<EbookQueryRespDto>> getAllEbook(PageReqDto pageReqDto) {
+    public RestfulModel<PageRespDto<EbookQueryRespDto>> getAllEbook(@Valid PageReqDto pageReqDto) {
         PageRespDto<EbookQueryRespDto> bookList = ebookService.queryAll(pageReqDto.getPageNum(), pageReqDto.getPageSize());
         return new RestfulModel<>(ErrorCode.SUCCESS, "", bookList);
     }

src/main/java/io/github/yubincloud/fairywiki/dto/req/PageReqDto.java

@@ -2,13 +2,19 @@ package io.github.yubincloud.fairywiki.dto.req;
 
 import lombok.Data;
 
+import javax.validation.constraints.Max;
+import javax.validation.constraints.NotNull;
+
 /**
  * 当需要对数据库的查询进行分页时需要继承此 Req 类
  */
 @Data
 public class PageReqDto {
 
+    @NotNull(message = "【页码】不能为空")
     private int pageNum;
 
+    @NotNull(message = "【每页条数】不能为空")
+    @Max(value = 1000, message = "【每页条数】不能超过1000")
     private int pageSize;
 }

src/main/java/io/github/yubincloud/fairywiki/dto/resp/ErrorCode.java

@@ -4,4 +4,5 @@ public class ErrorCode {
 
     public static final int SUCCESS = 0;
 
+    public static final int ARGS_VALIDATION_ERROR = -1000;
 }

web/src/views/admin/admin-ebook.vue

@@ -67,6 +67,7 @@
 <script lang="ts">
 import { defineComponent, onMounted, ref } from 'vue';
 import axios from 'axios';
+import { message } from 'ant-design-vue'
 
 export default defineComponent({
   name: 'AdminEbook',
@@ -74,7 +75,7 @@ export default defineComponent({
     const ebooks = ref();
     const pagination = ref({
       current: 1,
-      pageSize: 4,
+      pageSize: 5000,
       total: 0
     });
     const loading = ref(false);
@@ -130,12 +131,17 @@ export default defineComponent({
       }).then((response) => {
         loading.value = false;
         const respData = response.data;
-        const pageData = respData.data;
-        ebooks.value = pageData.list;
 
-        // 重置分页按钮
-        pagination.value.current = queryParams.pageNum;
-        pagination.value.total = pageData.total;
+        if (respData.code == 0) {
+          const pageData = respData.data;
+          ebooks.value = pageData.list;
+
+          // 重置分页按钮
+          pagination.value.current = queryParams.pageNum;
+          pagination.value.total = pageData.total;
+        } else {
+          message.error(respData.msg);
+        }
       });
     };