对博客参数验证进行改造，添加自定义校验器和分组

src/main/java/cn/meteor/beyondclouds/core/validation/constraints/NullOrNotBlank.java

+package cn.meteor.beyondclouds.core.validation.constraints;
+
+import cn.meteor.beyondclouds.core.validation.validator.NullOrNotBlankValidator;
+
+import javax.validation.Constraint;
+import javax.validation.Payload;
+import javax.validation.constraints.AssertTrue;
+import java.lang.annotation.*;
+
+import static java.lang.annotation.ElementType.*;
+import static java.lang.annotation.ElementType.TYPE_USE;
+import static java.lang.annotation.RetentionPolicy.RUNTIME;
+
+/**
+ * null or not blank
+ * 被验证的参数可以为空，但如果对其进行赋值则该参数必须有有效字符
+ * @author meteor
+ */
+@Retention(RetentionPolicy.RUNTIME)
+@Target({ METHOD, FIELD, ANNOTATION_TYPE, CONSTRUCTOR, PARAMETER, TYPE_USE })
+@Documented
+@Constraint(validatedBy = NullOrNotBlankValidator.class)
+public @interface NullOrNotBlank {
+
+    String message() default "null or not blank";
+
+    Class<?>[] groups() default { };
+
+    Class<? extends Payload>[] payload() default { };
+
+
+    @Target({ METHOD, FIELD, ANNOTATION_TYPE, CONSTRUCTOR, PARAMETER, TYPE_USE })
+    @Retention(RUNTIME)
+    @Documented
+    @interface List {
+        AssertTrue[] value();
+    }
+}

src/main/java/cn/meteor/beyondclouds/core/validation/groups/InsertGroup.java

+package cn.meteor.beyondclouds.core.validation.groups;
+
+/**
+ * 参数验证分组-插入
+ * @author meteor
+ */
+public interface InsertGroup {
+}

src/main/java/cn/meteor/beyondclouds/core/validation/groups/UpdateGroup.java

+package cn.meteor.beyondclouds.core.validation.groups;
+
+/**
+ * 参数验证分组-更新
+ * @author meteor
+ */
+public interface UpdateGroup {
+}

src/main/java/cn/meteor/beyondclouds/core/validation/validator/NullOrNotBlankValidator.java

+package cn.meteor.beyondclouds.core.validation.validator;
+
+import cn.meteor.beyondclouds.core.validation.constraints.NullOrNotBlank;
+import org.springframework.util.StringUtils;
+
+import javax.validation.ConstraintValidator;
+import javax.validation.ConstraintValidatorContext;
+
+/**
+ * NullOrNotBlank参数校验器
+ * @author meteor
+ */
+public class NullOrNotBlankValidator implements ConstraintValidator<NullOrNotBlank, String> {
+    @Override
+    public boolean isValid(String value, ConstraintValidatorContext context) {
+
+        if (null == value) {
+            return true;
+        }
+
+        if (!StringUtils.isEmpty(value.trim())) {
+            return true;
+        }
+        return false;
+    }
+}

src/main/java/cn/meteor/beyondclouds/modules/blog/api/BlogApi.java

@@ -6,12 +6,13 @@ import cn.meteor.beyondclouds.core.annotation.Anonymous;
 import cn.meteor.beyondclouds.core.annotation.CurrentSubject;
 import cn.meteor.beyondclouds.core.api.Response;
 import cn.meteor.beyondclouds.core.bean.Subject;
+import cn.meteor.beyondclouds.core.validation.groups.InsertGroup;
+import cn.meteor.beyondclouds.core.validation.groups.UpdateGroup;
 import cn.meteor.beyondclouds.modules.blog.bean.BlogDetail;
 import cn.meteor.beyondclouds.modules.blog.entity.Blog;
 import cn.meteor.beyondclouds.modules.blog.exception.BlogCategoryServiceException;
 import cn.meteor.beyondclouds.modules.blog.exception.BlogServiceException;
-import cn.meteor.beyondclouds.modules.blog.form.PublishBlogForm;
-import cn.meteor.beyondclouds.modules.blog.form.UpdateBlogForm;
+import cn.meteor.beyondclouds.modules.blog.form.BlogForm;
 import cn.meteor.beyondclouds.modules.blog.service.IBlogService;
 import com.baomidou.mybatisplus.core.metadata.IPage;
 import io.swagger.annotations.Api;
@@ -19,6 +20,7 @@ import io.swagger.annotations.ApiOperation;
 import org.springframework.beans.BeanUtils;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.validation.BindingResult;
+import org.springframework.validation.annotation.Validated;
 import org.springframework.web.bind.annotation.*;
 
 import javax.validation.Valid;
@@ -42,7 +44,7 @@ public class BlogApi {
 
     @ApiOperation("发布博客")
     @PostMapping("/blog")
-    public Response publishBlog (@RequestBody @Valid PublishBlogForm publishBlogForm, BindingResult result, @CurrentSubject Subject subject) {
+    public Response publishBlog (@RequestBody @Validated(InsertGroup.class)BlogForm publishBlogForm, BindingResult result, @CurrentSubject Subject subject) {
         if (result.hasErrors()) {
             return Response.fieldError(result.getFieldError());
         }
@@ -52,7 +54,7 @@ public class BlogApi {
         blog.setUserId((String) subject.getId());
 
         try {
-            blogService.publishBlog(blog, publishBlogForm.getBlogContent(),
+            blogService.publishBlog(blog, publishBlogForm.getContent(),
                     publishBlogForm.getTopicIds(), publishBlogForm.getTagIds());
             return Response.success();
         } catch (BlogCategoryServiceException e) {
@@ -130,7 +132,7 @@ public class BlogApi {
 
     @ApiOperation("修改博客")
     @PutMapping("/blog/{blogId}")
-    public Response updateBlog (@PathVariable("blogId") String blogId , @RequestBody @Valid UpdateBlogForm updateBlogForm ,
+    public Response updateBlog (@PathVariable("blogId") String blogId , @RequestBody @Validated(UpdateGroup.class) BlogForm updateBlogForm ,
                                 BindingResult result , @CurrentSubject Subject subject) {
         if (result.hasErrors()) {
             return Response.fieldError(result.getFieldError());

src/main/java/cn/meteor/beyondclouds/modules/blog/form/UpdateBlogForm.java → src/main/java/cn/meteor/beyondclouds/modules/blog/form/BlogForm.java

 package cn.meteor.beyondclouds.modules.blog.form;
 
+import cn.meteor.beyondclouds.core.validation.constraints.NullOrNotBlank;
+import cn.meteor.beyondclouds.core.validation.groups.InsertGroup;
+import cn.meteor.beyondclouds.core.validation.groups.UpdateGroup;
 import lombok.Data;
 
 import javax.validation.constraints.NotEmpty;
+import javax.validation.constraints.NotNull;
 import java.util.List;
 
 /**
  * @author gaoTong
- * @date 2020/2/1 14:48
+ * @date 2020/1/31 9:36
  */
 
+
 @Data
-public class UpdateBlogForm {
+public class BlogForm {
 
-    @NotEmpty(message = "标题不能为空")
+    @NotNull(message = "标题不能为空", groups = InsertGroup.class)
+    @NotEmpty(message = "标题不能为空", groups = InsertGroup.class)
+    @NullOrNotBlank(message = "请传入有效的标题", groups = UpdateGroup.class)
     private String blogTitle;
 
+    @NullOrNotBlank(message = "请传入有效的原文链接", groups = {InsertGroup.class, UpdateGroup.class})
     private String originLink;
 
-    @NotEmpty(message = "摘要不能为空")
+    @NotNull(message = "摘要不能为空", groups = InsertGroup.class)
+    @NotEmpty(message = "摘要不能为空", groups = InsertGroup.class)
+    @NullOrNotBlank(message = "请传入有效的摘要", groups = UpdateGroup.class)
     private String blogAbstract;
 
+    @NotNull(message = "博客类型不能为空", groups = InsertGroup.class)
     private Integer categoryId;
 
-    @NotEmpty(message = "内容不能为空")
+    @NotNull(message = "内容不能为空", groups = InsertGroup.class)
+    @NotEmpty(message = "内容不能为空", groups = InsertGroup.class)
+    @NullOrNotBlank(message = "请传入有效的博客内容", groups = UpdateGroup.class)
     private String content;
 
     private List<String> topicIds;
 
     private List<String> tagIds;
 
+    @NotNull(message = "浏览权限不能为空", groups = InsertGroup.class)
     private Integer viewPrivileges;
 
+    @NotNull(message = "评论权限不能为空", groups = InsertGroup.class)
     private Boolean allowComment;
 
+    @NotNull(message = "转载权限不能为空", groups = InsertGroup.class)
     private Boolean allowForward;
 
-    @NotEmpty(message = "封面图不能为空")
+    @NotNull(message = "封面图不能为空", groups = InsertGroup.class)
+    @NotEmpty(message = "封面图不能为空", groups = InsertGroup.class)
+    @NullOrNotBlank(message = "请传入有效的封面图链接", groups = UpdateGroup.class)
     private String cover;
-
 }

src/main/java/cn/meteor/beyondclouds/modules/blog/form/PublishBlogForm.java

-package cn.meteor.beyondclouds.modules.blog.form;
-
-import lombok.Data;
-
-import javax.validation.constraints.NotEmpty;
-import javax.validation.constraints.NotNull;
-import java.util.List;
-
-/**
- * @author gaoTong
- * @date 2020/1/31 9:36
- */
-
-
-@Data
-public class PublishBlogForm {
-
-    @NotNull(message = "标题不能为空")
-    @NotEmpty(message = "标题不能为空")
-    private String blogTitle;
-
-    private String originLink;
-
-    @NotNull(message = "摘要不能为空")
-    @NotEmpty(message = "摘要不能为空")
-    private String blogAbstract;
-
-    @NotNull(message = "博客类型不能为空")
-    private Integer categoryId;
-
-    @NotNull(message = "内容不能为空")
-    @NotEmpty(message = "内容不能为空")
-    private String blogContent;
-
-    private List<String> topicIds;
-
-    private List<String> tagIds;
-
-    @NotNull(message = "浏览权限不能为空")
-    private Integer viewPrivileges;
-
-    @NotNull(message = "评论权限不能为空")
-    private Boolean allowComment;
-
-    @NotNull(message = "转载权限不能为空")
-    private Boolean allowForward;
-
-    @NotNull(message = "封面图不能为空")
-    @NotEmpty(message = "封面图不能为空")
-    private String cover;
-}