diff --git a/src/main/java/run/halo/app/config/WebMvcAutoConfiguration.java b/src/main/java/run/halo/app/config/WebMvcAutoConfiguration.java
index 04ebbcf73656284e6daae3daa54b8d2b5833c3ff..9f86ca5e4831c18c28c6afed2a0bca679ec2c5e3 100644
--- a/src/main/java/run/halo/app/config/WebMvcAutoConfiguration.java
+++ b/src/main/java/run/halo/app/config/WebMvcAutoConfiguration.java
@@ -3,7 +3,6 @@ package run.halo.app.config;
 import com.fasterxml.jackson.databind.ObjectMapper;
 import freemarker.template.TemplateExceptionHandler;
 import lombok.extern.slf4j.Slf4j;
-import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.boot.jackson.JsonComponentModule;
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.ComponentScan;
@@ -44,8 +43,11 @@ public class WebMvcAutoConfiguration implements WebMvcConfigurer {
 
     private static final String FILE_PROTOCOL = "file:///";
 
-    @Autowired
-    private HaloProperties haloProperties;
+    private final HaloProperties haloProperties;
+
+    public WebMvcAutoConfiguration(HaloProperties haloProperties) {
+        this.haloProperties = haloProperties;
+    }
 
     @Override
     public void extendMessageConverters(List<HttpMessageConverter<?>> converters) {
diff --git a/src/main/java/run/halo/app/service/PostService.java b/src/main/java/run/halo/app/service/PostService.java
index 4a8a84f8f99ee9511af2fbff43c5d5c98eeaa54a..7cc33b8b67967caf9028f7c069862f333289a613 100755
--- a/src/main/java/run/halo/app/service/PostService.java
+++ b/src/main/java/run/halo/app/service/PostService.java
@@ -193,4 +193,22 @@ public interface PostService extends CrudService<Post, Integer> {
      */
     @NonNull
     Page<PostListVO> convertToListVo(@NonNull Page<Post> postPage);
+
+    /**
+     * Lists all posts by post status.
+     *
+     * @param status post status must not be null
+     * @return a list of post
+     */
+    @NonNull
+    List<Post> listAllBy(@NonNull PostStatus status);
+
+    /**
+     * Filters post content if the password is not blank.
+     *
+     * @param post original post must not be null
+     * @return filtered post
+     */
+    @NonNull
+    Post filterIfEncrypt(@NonNull Post post);
 }
diff --git a/src/main/java/run/halo/app/service/impl/PostServiceImpl.java b/src/main/java/run/halo/app/service/impl/PostServiceImpl.java
index 549b89c6e5b1eea66299e03d1fce8b3b383fd28a..11968aee674d26be9bf3b9e0b5be0d3603f95ce6 100644
--- a/src/main/java/run/halo/app/service/impl/PostServiceImpl.java
+++ b/src/main/java/run/halo/app/service/impl/PostServiceImpl.java
@@ -416,6 +416,27 @@ public class PostServiceImpl extends AbstractCrudService<Post, Integer> implemen
         });
     }
 
+    @Override
+    public List<Post> listAllBy(PostStatus status) {
+        Assert.notNull(status, "Post status must not be null");
+
+        return postRepository.findAllByStatus(status);
+    }
+
+    @Override
+    public Post filterIfEncrypt(Post post) {
+        Assert.notNull(post, "Post must not be null");
+
+        if (StringUtils.isNotBlank(post.getPassword())) {
+            String tip = "The post is encrypted by author";
+            post.setSummary(tip);
+            post.setOriginalContent(tip);
+            post.setFormatContent(tip);
+        }
+
+        return post;
+    }
+
     /**
      * Converts to post minimal output dto.
      *
diff --git a/src/main/java/run/halo/app/web/controller/base/ControllerExceptionHandler.java b/src/main/java/run/halo/app/web/controller/base/ControllerExceptionHandler.java
index b4904e999106af4e3e5dd84df970a79b410cd61b..41023fdffbb8124abdf9c3b7699ccb9f0beb9747 100644
--- a/src/main/java/run/halo/app/web/controller/base/ControllerExceptionHandler.java
+++ b/src/main/java/run/halo/app/web/controller/base/ControllerExceptionHandler.java
@@ -1,5 +1,6 @@
 package run.halo.app.web.controller.base;
 
+import org.springframework.web.HttpMediaTypeNotAcceptableException;
 import run.halo.app.exception.HaloException;
 import run.halo.app.model.support.BaseResponse;
 import run.halo.app.utils.ExceptionUtils;
@@ -82,6 +83,14 @@ public class ControllerExceptionHandler {
         return baseResponse;
     }
 
+    @ExceptionHandler(HttpMediaTypeNotAcceptableException.class)
+    @ResponseStatus(HttpStatus.NOT_ACCEPTABLE)
+    public BaseResponse handleHttpMediaTypeNotAcceptableException(HttpMediaTypeNotAcceptableException e) {
+        BaseResponse<?> baseResponse = handleBaseException(e);
+        baseResponse.setStatus(HttpStatus.NOT_ACCEPTABLE.value());
+        return baseResponse;
+    }
+
     @ExceptionHandler(HttpMessageNotReadableException.class)
     @ResponseStatus(HttpStatus.BAD_REQUEST)
     public BaseResponse handleHttpMessageNotReadableException(HttpMessageNotReadableException e) {
diff --git a/src/main/java/run/halo/app/web/controller/content/ContentFeedController.java b/src/main/java/run/halo/app/web/controller/content/ContentFeedController.java
index fe943098780da2f149863046c198822416232d1a..9b3d6caaac476a371106a55271a995d487720e2d 100644
--- a/src/main/java/run/halo/app/web/controller/content/ContentFeedController.java
+++ b/src/main/java/run/halo/app/web/controller/content/ContentFeedController.java
@@ -1,17 +1,12 @@
 package run.halo.app.web.controller.content;
 
-import run.halo.app.model.entity.Post;
-import run.halo.app.model.enums.PostStatus;
-import run.halo.app.model.enums.PostType;
-import run.halo.app.service.OptionService;
-import run.halo.app.service.PostService;
-import cn.hutool.core.util.StrUtil;
 import freemarker.template.Template;
 import freemarker.template.TemplateException;
-import org.springframework.data.domain.Page;
 import org.springframework.data.domain.PageRequest;
 import org.springframework.data.domain.Pageable;
 import org.springframework.data.domain.Sort;
+import org.springframework.http.MediaType;
+import org.springframework.lang.NonNull;
 import org.springframework.stereotype.Controller;
 import org.springframework.ui.Model;
 import org.springframework.ui.freemarker.FreeMarkerTemplateUtils;
@@ -20,11 +15,14 @@ import org.springframework.web.bind.annotation.ResponseBody;
 import org.springframework.web.servlet.view.freemarker.FreeMarkerConfigurer;
 import run.halo.app.model.entity.Post;
 import run.halo.app.model.enums.PostStatus;
+import run.halo.app.service.OptionService;
 import run.halo.app.service.PostService;
 
 import java.io.IOException;
 import java.util.List;
 
+import static org.springframework.data.domain.Sort.Direction.DESC;
+
 /**
  * @author : RYAN0UP
  * @date : 2019-03-21
@@ -38,6 +36,10 @@ public class ContentFeedController {
 
     private final FreeMarkerConfigurer freeMarker;
 
+    private final static String UTF_8_SUFFIX = ";charset=UTF-8";
+
+    private final static String XML_MEDIA_TYPE = MediaType.APPLICATION_XML_VALUE + UTF_8_SUFFIX;
+
     public ContentFeedController(PostService postService,
                                  OptionService optionService,
                                  FreeMarkerConfigurer freeMarker) {
@@ -54,14 +56,11 @@ public class ContentFeedController {
      * @throws IOException       IOException
      * @throws TemplateException TemplateException
      */
-    @GetMapping(value = {"feed", "feed.xml", "rss", "rss.xml"}, produces = "application/xml;charset=UTF-8")
+    @GetMapping(value = {"feed", "feed.xml", "rss", "rss.xml"}, produces = XML_MEDIA_TYPE)
     @ResponseBody
     public String feed(Model model) throws IOException, TemplateException {
-        int rssPageSize = optionService.getRssPageSize();
-        final Sort sort = new Sort(Sort.Direction.DESC, "postDate");
-        final Pageable pageable = PageRequest.of(0, rssPageSize, sort);
-        model.addAttribute("posts", buildPosts(pageable));
-        final Template template = freeMarker.getConfiguration().getTemplate("common/web/rss.ftl");
+        model.addAttribute("posts", buildPosts(buildPostPageable(optionService.getRssPageSize())));
+        Template template = freeMarker.getConfiguration().getTemplate("common/web/rss.ftl");
         return FreeMarkerTemplateUtils.processTemplateIntoString(template, model);
     }
 
@@ -73,14 +72,11 @@ public class ContentFeedController {
      * @throws IOException       IOException
      * @throws TemplateException TemplateException
      */
-    @GetMapping(value = {"atom", "atom.xml"}, produces = "application/xml;charset=UTF-8")
+    @GetMapping(value = {"atom", "atom.xml"}, produces = XML_MEDIA_TYPE)
     @ResponseBody
     public String atom(Model model) throws IOException, TemplateException {
-        int pageSize = optionService.getPostPageSize();
-        final Sort sort = new Sort(Sort.Direction.DESC, "createTime");
-        final Pageable pageable = PageRequest.of(0, pageSize, sort);
-        model.addAttribute("posts", buildPosts(pageable));
-        final Template template = freeMarker.getConfiguration().getTemplate("common/web/atom.ftl");
+        model.addAttribute("posts", buildPosts(buildPostPageable(optionService.getPostPageSize())));
+        Template template = freeMarker.getConfiguration().getTemplate("common/web/atom.ftl");
         return FreeMarkerTemplateUtils.processTemplateIntoString(template, model);
     }
 
@@ -92,11 +88,11 @@ public class ContentFeedController {
      * @throws IOException       IOException
      * @throws TemplateException TemplateException
      */
-    @GetMapping(value = {"sitemap", "sitemap.xml"}, produces = "application/xml;charset=UTF-8")
+    @GetMapping(value = {"sitemap", "sitemap.xml"}, produces = XML_MEDIA_TYPE)
     @ResponseBody
     public String sitemapXml(Model model) throws IOException, TemplateException {
         model.addAttribute("posts", buildPosts(null));
-        final Template template = freeMarker.getConfiguration().getTemplate("common/web/sitemap_xml.ftl");
+        Template template = freeMarker.getConfiguration().getTemplate("common/web/sitemap_xml.ftl");
         return FreeMarkerTemplateUtils.processTemplateIntoString(template, model);
     }
 
@@ -106,7 +102,7 @@ public class ContentFeedController {
      * @param model model
      * @return String
      */
-    @GetMapping(value = "sitemap.html", produces = {"text/html"})
+    @GetMapping(value = "sitemap.html", produces = MediaType.TEXT_PLAIN_VALUE)
     public String sitemapHtml(Model model) {
         model.addAttribute("posts", buildPosts(null));
         return "common/web/sitemap_html";
@@ -120,13 +116,24 @@ public class ContentFeedController {
      * @throws IOException       IOException
      * @throws TemplateException TemplateException
      */
-    @GetMapping(value = "robots.txt", produces = {"text/plain"})
+    @GetMapping(value = "robots.txt", produces = MediaType.TEXT_PLAIN_VALUE)
     @ResponseBody
     public String robots(Model model) throws IOException, TemplateException {
-        final Template template = freeMarker.getConfiguration().getTemplate("common/web/robots.ftl");
+        Template template = freeMarker.getConfiguration().getTemplate("common/web/robots.ftl");
         return FreeMarkerTemplateUtils.processTemplateIntoString(template, model);
     }
 
+    /**
+     * Builds page info for post.
+     *
+     * @param size page size
+     * @return page info
+     */
+    @NonNull
+    private Pageable buildPostPageable(int size) {
+        return PageRequest.of(0, size, Sort.by(DESC, "createTime"));
+    }
+
     /**
      * Build posts for feed
      *
@@ -134,13 +141,10 @@ public class ContentFeedController {
      * @return List<Post>
      */
     private List<Post> buildPosts(Pageable pageable) {
-        final Page<Post> postsPage = postService.pageBy(PostStatus.PUBLISHED, pageable).map(post -> {
-            if (StrUtil.isNotEmpty(post.getPassword())) {
-                post.setFormatContent("该文章为加密文章");
-                post.setSummary("该文章为加密文章");
-            }
-            return post;
-        });
-        return postsPage.getContent();
+        if (pageable == null) {
+            return postService.listAllBy(PostStatus.PUBLISHED);
+        }
+
+        return postService.pageBy(PostStatus.PUBLISHED, pageable).map(postService::filterIfEncrypt).getContent();
     }
 }