diff --git a/.github/workflows/Typecho-release-Ci.yml b/.github/workflows/Typecho-release-Ci.yml
index 7a2f65fb..08f4d117 100644
--- a/.github/workflows/Typecho-release-Ci.yml
+++ b/.github/workflows/Typecho-release-Ci.yml
@@ -1,14 +1,14 @@
 name: Typecho Build Release Ci
 on:
-  push:
-    tags:
-      - 'v*'
+  release:
+    types: [published]
+
 jobs:
   build:
     runs-on: ubuntu-latest
     steps:
     - name: Checkout code
-      uses: actions/checkout@v2
+      uses: actions/checkout@v3
     - name: Build
       run: |
         mkdir build
@@ -17,27 +17,14 @@ jobs:
         chmod 755 build/usr/uploads/
         rm -rf build/admin/src
         cd build && zip -q -r typecho.zip * && mv typecho.zip ../ && cd -
-    - name: Create Release
-      id: create_release
-      uses: actions/create-release@v1
-      env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-      with:
-          tag_name: ${{ github.ref }}
-          release_name: ${{ github.ref }}
-          draft: true
-          prerelease: false
     - name: Upload Release Asset
-      id: upload-release-asset 
-      uses: actions/upload-release-asset@v1
-      env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+      uses: shogo82148/actions-upload-release-asset@v1
       with:
-          upload_url: ${{ steps.create_release.outputs.upload_url }}
+          upload_url: ${{ github.event.release.upload_url }}
           asset_path: ./typecho.zip
           asset_name: typecho.zip
           asset_content_type: application/zip
-    - name: Trigger langs build
+    - name: Trigger language build
       run: |
         curl -XPOST -H "Authorization: token ${{ secrets.WORKFLOW_TOKEN }}" \
           -H "Accept: application/vnd.github.everest-preview+json" \
diff --git a/admin/custom-fields.php b/admin/custom-fields.php
index 39e52ae8..8e94b0bd 100644
--- a/admin/custom-fields.php
+++ b/admin/custom-fields.php
@@ -9,8 +9,8 @@ $defaultFields = isset($post) ? $post->getDefaultFieldItems() : $page->getDefaul
                 class="i-caret-right"></i> <?php _e('自定义字段'); ?></a></label>
     <table class="typecho-list-table mono">
         <colgroup>
-            <col width="25%"/>
-            <col width="10%"/>
+            <col width="20%"/>
+            <col width="15%"/>
             <col width="55%"/>
             <col width="10%"/>
         </colgroup>
@@ -37,12 +37,14 @@ $defaultFields = isset($post) ? $post->getDefaultFieldItems() : $page->getDefaul
                             value="int"<?php if ('int' == $field['type']): ?> selected<?php endif; ?>><?php _e('整数'); ?></option>
                         <option
                             value="float"<?php if ('float' == $field['type']): ?> selected<?php endif; ?>><?php _e('小数'); ?></option>
+                        <option
+                            value="json"<?php if ('json' == $field['type']): ?> selected<?php endif; ?>><?php _e('JSON 结构'); ?></option>
                     </select>
                 </td>
                 <td>
                     <label for="fieldvalue" class="sr-only"><?php _e('字段值'); ?></label>
                     <textarea name="fieldValues[]" id="fieldvalue" class="text-s w-100"
-                              rows="2"><?php echo htmlspecialchars($field[$field['type'] . '_value']); ?></textarea>
+                              rows="2"><?php echo htmlspecialchars($field[($field['type'] == 'json' ? 'str' : $field['type']) . '_value']); ?></textarea>
                 </td>
                 <td>
                     <button type="button" class="btn btn-xs"><?php _e('删除'); ?></button>
diff --git a/admin/manage-comments.php b/admin/manage-comments.php
index c85e8a3c..22f0d489 100644
--- a/admin/manage-comments.php
+++ b/admin/manage-comments.php
@@ -131,7 +131,7 @@ $isAllComments = ('on' == $request->get('__typecho_all_comments') || 'on' == \Ty
                                 <div class="comment-meta">
                                     <strong class="comment-author"><?php $comments->author(true); ?></strong>
                                     <?php if($comments->mail): ?>
-                                    <br /><span><a href="mailto:<?php $comments->mail(); ?>"><?php $comments->mail(); ?></a></span>
+                                    <br /><span><a href="<?php $comments->mail(true); ?>"><?php $comments->mail(); ?></a></span>
                                     <?php endif; ?>
                                     <?php if($comments->ip): ?>
                                     <br /><span><?php $comments->ip(); ?></span>
diff --git a/install.php b/install.php
index f4cc9971..3c98e925 100644
--- a/install.php
+++ b/install.php
@@ -1031,8 +1031,7 @@ function install_step_2_perform()
                 ->addRule('dbFile', 'required', _t('确认您的配置'))
                 ->addRule('dbFile', function (string $path) {
                     $pattern = "/^(\/[._a-z0-9-]+)*[a-z0-9]+\.[a-z0-9]{2,}$/i";
-                    if (strstr(PHP_OS, 'WIN'))
-                    {
+                    if (strstr(PHP_OS, 'WIN')) {
                         $pattern = "/(\/[._a-z0-9-]+)*[a-z0-9]+\.[a-z0-9]{2,}$/i";
                     }
                     return !!preg_match($pattern, $path);
@@ -1077,7 +1076,12 @@ function install_step_2_perform()
             $installDb->addServer($dbConfig, \Typecho\Db::READ | \Typecho\Db::WRITE);
             $installDb->query('SELECT 1=1');
         } catch (\Typecho\Db\Adapter\ConnectionException $e) {
-            install_raise_error(_t('对不起, 无法连接数据库, 请先检查数据库配置再继续进行安装: "%s"', $e->getMessage()));
+            $code = $e->getCode();
+            if (('Mysql' == $type && 1049 == $code) || ('Pgsql' == $type && 7 == $code)) {
+                install_raise_error(_t('数据库: "%s"不存在，请手动创建后重试', $config['dbDatabase']));
+            } else {
+                install_raise_error(_t('对不起, 无法连接数据库, 请先检查数据库配置再继续进行安装: "%s"', $e->getMessage()));
+            }
         } catch (\Typecho\Db\Exception $e) {
             install_raise_error(_t('安装程序捕捉到以下错误: "%s". 程序被终止, 请检查您的配置信息.', $e->getMessage()));
         }
diff --git a/var/Typecho/Common.php b/var/Typecho/Common.php
index 02937782..7bdb18cc 100644
--- a/var/Typecho/Common.php
+++ b/var/Typecho/Common.php
@@ -83,7 +83,7 @@ namespace Typecho {
         $isPlugin = false;
 
         // detect if class is predefined
-        if (strpos($className, '\\') !== false) {
+        if ($isNamespace) {
             $isPlugin = strpos(ltrim($className, '\\'), PLUGIN_NAMESPACE . '\\') !== false;
 
             if ($isPlugin) {
diff --git a/var/Typecho/Validate.php b/var/Typecho/Validate.php
index 4e371172..ae8a3a5d 100644
--- a/var/Typecho/Validate.php
+++ b/var/Typecho/Validate.php
@@ -96,7 +96,8 @@ class Validate
      */
     public static function email(string $str): bool
     {
-        return filter_var($str, FILTER_VALIDATE_EMAIL) !== false;
+        $email = filter_var($str, FILTER_SANITIZE_EMAIL);
+        return !!filter_var($str, FILTER_VALIDATE_EMAIL) && ($email === $str);
     }
 
     /**
@@ -110,10 +111,8 @@ class Validate
      */
     public static function url(string $str): bool
     {
-        return filter_var(
-            $str,
-            FILTER_VALIDATE_URL
-        ) !== false;
+        $url = Common::safeUrl($str);
+        return !!filter_var($str, FILTER_VALIDATE_URL) && ($url === $str);
     }
 
     /**
diff --git a/var/Typecho/Widget/Helper/Form/Element.php b/var/Typecho/Widget/Helper/Form/Element.php
index 7389ebdd..984864c5 100644
--- a/var/Typecho/Widget/Helper/Form/Element.php
+++ b/var/Typecho/Widget/Helper/Form/Element.php
@@ -217,7 +217,7 @@ abstract class Element extends Layout
     public function value($value): Element
     {
         $this->value = $value;
-        $this->inputValue($value);
+        $this->inputValue($value ?? '');
         return $this;
     }
 
diff --git a/var/Typecho/Widget/Helper/Form/Element/Checkbox.php b/var/Typecho/Widget/Helper/Form/Element/Checkbox.php
index 15353975..b931d692 100644
--- a/var/Typecho/Widget/Helper/Form/Element/Checkbox.php
+++ b/var/Typecho/Widget/Helper/Form/Element/Checkbox.php
@@ -61,7 +61,7 @@ class Checkbox extends Element
      */
     protected function inputValue($value)
     {
-        $values = is_array($value) ? $value : [$value];
+        $values = is_null($value) ? [] : (is_array($value) ? $value : [$value]);
 
         foreach ($this->options as $option) {
             $option->removeAttribute('checked');
diff --git a/var/Widget/Archive.php b/var/Widget/Archive.php
index 4d902bc9..674a1b42 100644
--- a/var/Widget/Archive.php
+++ b/var/Widget/Archive.php
@@ -918,7 +918,7 @@ class Archive extends Contents
      */
     public function related(int $limit = 5, ?string $type = null): Contents
     {
-        $type = strtolower($type);
+        $type = strtolower($type ?? '');
 
         switch ($type) {
             case 'author':
diff --git a/var/Widget/Base/Comments.php b/var/Widget/Base/Comments.php
index f318711b..2c468e08 100644
--- a/var/Widget/Base/Comments.php
+++ b/var/Widget/Base/Comments.php
@@ -306,6 +306,18 @@ class Comments extends Base implements QueryInterface
         echo Common::subStr(strip_tags($this->content), 0, $length, $trim);
     }
 
+    /**
+     * 输出邮箱地址
+     *
+     * @param bool $link
+     * @return void
+     */
+    public function mail(bool $link = false)
+    {
+        $mail = htmlspecialchars($this->mail);
+        echo $link ? 'mailto:' . $mail : $mail;
+    }
+
     /**
      * 获取查询对象
      *
diff --git a/var/Widget/Base/Contents.php b/var/Widget/Base/Contents.php
index 5f871de6..6dca0b12 100644
--- a/var/Widget/Base/Contents.php
+++ b/var/Widget/Base/Contents.php
@@ -346,41 +346,42 @@ class Contents extends Base implements QueryInterface
      *
      * @param string $name
      * @param string $type
-     * @param string $value
+     * @param mixed $value
      * @param integer $cid
      * @return integer|bool
      * @throws Exception
      */
-    public function setField(string $name, string $type, string $value, int $cid)
+    public function setField(string $name, string $type, $value, int $cid)
     {
         if (
             empty($name) || !$this->checkFieldName($name)
-            || !in_array($type, ['str', 'int', 'float'])
+            || !in_array($type, ['str', 'int', 'float', 'json'])
         ) {
             return false;
         }
 
+        if ($type === 'json') {
+            $value = json_encode($value);
+        }
+
         $exist = $this->db->fetchRow($this->db->select('cid')->from('table.fields')
             ->where('cid = ? AND name = ?', $cid, $name));
 
+        $rows = [
+            'type'        => $type,
+            'str_value'   => 'str' == $type || 'json' == $type ? $value : null,
+            'int_value'   => 'int' == $type ? intval($value) : 0,
+            'float_value' => 'float' == $type ? floatval($value) : 0
+        ];
+
         if (empty($exist)) {
-            return $this->db->query($this->db->insert('table.fields')
-                ->rows([
-                    'cid'         => $cid,
-                    'name'        => $name,
-                    'type'        => $type,
-                    'str_value'   => 'str' == $type ? $value : null,
-                    'int_value'   => 'int' == $type ? intval($value) : 0,
-                    'float_value' => 'float' == $type ? floatval($value) : 0
-                ]));
+            $rows['cid'] = $cid;
+            $rows['name'] = $name;
+
+            return $this->db->query($this->db->insert('table.fields')->rows($rows));
         } else {
             return $this->db->query($this->db->update('table.fields')
-                ->rows([
-                    'type'        => $type,
-                    'str_value'   => 'str' == $type ? $value : null,
-                    'int_value'   => 'int' == $type ? intval($value) : 0,
-                    'float_value' => 'float' == $type ? floatval($value) : 0
-                ])
+                ->rows($rows)
                 ->where('cid = ? AND name = ?', $cid, $name));
         }
     }
@@ -872,7 +873,8 @@ class Contents extends Base implements QueryInterface
             ->where('cid = ?', $this->cid));
 
         foreach ($rows as $row) {
-            $fields[$row['name']] = $row[$row['type'] . '_value'];
+            $value = 'json' == $row['type'] ? json_decode($row['str_value'], true) : $row[$row['type'] . '_value'];
+            $fields[$row['name']] = $value;
         }
 
         return new Config($fields);
diff --git a/var/Widget/Contents/Post/Edit.php b/var/Widget/Contents/Post/Edit.php
index fa8c1e5d..1679d7c4 100644
--- a/var/Widget/Contents/Post/Edit.php
+++ b/var/Widget/Contents/Post/Edit.php
@@ -229,8 +229,14 @@ class Edit extends Contents implements ActionInterface
                 if (preg_match("/^fields\[(.+)\]$/", $name, $matches)) {
                     $name = $matches[1];
                 } else {
+                    $inputName = 'fields[' . $name . ']';
+                    if (preg_match("/^(.+)\[\]$/", $name, $matches)) {
+                        $name = $matches[1];
+                        $inputName = 'fields[' . $name . '][]';
+                    }
+
                     foreach ($item->inputs as $input) {
-                        $input->setAttribute('name', 'fields[' . $name . ']');
+                        $input->setAttribute('name', $inputName);
                     }
                 }
 
@@ -662,8 +668,8 @@ class Edit extends Contents implements ActionInterface
         }
 
         $customFields = $this->request->getArray('fields');
-        if (!empty($customFields)) {
-            $fields = array_merge($fields, $customFields);
+        foreach ($customFields as $key => $val) {
+            $fields[$key] = [is_array($val) ? 'json' : 'str', $val];
         }
 
         return $fields;
diff --git a/var/Widget/Themes/Config.php b/var/Widget/Themes/Config.php
index 02bda8f8..ab97a269 100644
--- a/var/Widget/Themes/Config.php
+++ b/var/Widget/Themes/Config.php
@@ -71,7 +71,9 @@ class Config extends BaseOptions
 
         if (!empty($inputs)) {
             foreach ($inputs as $key => $val) {
-                $form->getInput($key)->value($this->options->{$key});
+                if (isset($this->options->{$key})) {
+                    $form->getInput($key)->value($this->options->{$key});
+                }
             }
         }