diff --git a/src/main/java/com/xkrs/straw/service/impl/NoticeServiceImpl.java b/src/main/java/com/xkrs/straw/service/impl/NoticeServiceImpl.java
index e7dc95a..6933209 100644
--- a/src/main/java/com/xkrs/straw/service/impl/NoticeServiceImpl.java
+++ b/src/main/java/com/xkrs/straw/service/impl/NoticeServiceImpl.java
@@ -1,17 +1,30 @@
 package com.xkrs.straw.service.impl;
 
+import com.xkrs.common.encapsulation.PromptMessageEnum;
 import com.xkrs.straw.dao.NoticeDao;
 import com.xkrs.straw.dao.NoticeRelaDao;
 import com.xkrs.straw.dao.SysUserDao;
 import com.xkrs.straw.model.entity.NoticeEntity;
+import com.xkrs.straw.model.entity.NoticeRelaEntity;
+import com.xkrs.straw.model.entity.SysUserEntity;
 import com.xkrs.straw.service.NoticeService;
+import com.xkrs.utils.TokenUtil;
+import org.apache.hc.core5.util.TextUtils;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import org.springframework.context.i18n.LocaleContextHolder;
+import org.springframework.data.domain.Sort;
+import org.springframework.data.jpa.domain.Specification;
 import org.springframework.stereotype.Service;
 
 import javax.annotation.Resource;
+import javax.persistence.criteria.Predicate;
+import java.util.ArrayList;
+import java.util.List;
 import java.util.Locale;
+import java.util.Optional;
+
+import static com.xkrs.common.encapsulation.OutputEncapsulation.outputEncapsulationObject;
 
 /**
  * 公告栏通知接口
@@ -37,7 +50,13 @@ public class NoticeServiceImpl implements NoticeService {
      */
     @Override
     public String insertNotice(String token, NoticeEntity insertQo) {
-        return null;
+        NoticeEntity noticeEntity = new NoticeEntity();
+        noticeEntity.setTitle(insertQo.getTitle());
+        noticeEntity.setContent(insertQo.getContent());
+        noticeEntity.setAuthor(insertQo.getAuthor());
+        noticeEntity.setState(insertQo.getState());
+        noticeDao.save(noticeEntity);
+        return outputEncapsulationObject(PromptMessageEnum.SUCCESS, "添加成功", locale);
     }
 
     /**
@@ -45,7 +64,29 @@ public class NoticeServiceImpl implements NoticeService {
      */
     @Override
     public String deleteNotice(String token, Long id) {
-        return null;
+        if (TextUtils.isEmpty(token) || id == null) {
+            return outputEncapsulationObject(PromptMessageEnum.PROCESS_FAIL, "参数错误", locale);
+        }
+        // 验证token
+        String tokenUserName = TokenUtil.obtainUserNameByToken(token);
+        SysUserEntity sysUserEntity = sysUserDao.selectByUserName(tokenUserName);
+        if (sysUserEntity == null) {
+            return outputEncapsulationObject(PromptMessageEnum.USER_LOGIN_ERROR, "您还没有注册登录，请先注册登录", locale);
+        }
+        if (!sysUserEntity.getAccountType().equals("管理员")) {
+            return outputEncapsulationObject(PromptMessageEnum.PROCESS_FAIL, "权限错误", locale);
+        }
+        noticeDao.deleteById(id);
+        Specification<NoticeRelaEntity> specification = (root, criteriaQuery, criteriaBuilder) -> {
+            List<Predicate> predicateList = new ArrayList<>();
+            predicateList.add(criteriaBuilder.equal(root.get("noticeId").as(Long.class), id));
+            return criteriaBuilder.and(predicateList.toArray(new Predicate[predicateList.size()]));
+        };
+        List<NoticeRelaEntity> list = noticeRelaDao.findAll(specification);
+        if (list.size() > 0) {
+            noticeRelaDao.deleteAll(list);
+        }
+        return outputEncapsulationObject(PromptMessageEnum.SUCCESS, "删除成功", locale);
     }
 
     /**
@@ -53,7 +94,45 @@ public class NoticeServiceImpl implements NoticeService {
      */
     @Override
     public String updateNotice(String token, NoticeEntity updateQo) {
-        return null;
+        if (TextUtils.isEmpty(token)) {
+            return outputEncapsulationObject(PromptMessageEnum.PROCESS_FAIL, "参数错误", locale);
+        }
+        // 验证token
+        String tokenUserName = TokenUtil.obtainUserNameByToken(token);
+        SysUserEntity sysUserEntity = sysUserDao.selectByUserName(tokenUserName);
+        if (sysUserEntity == null) {
+            return outputEncapsulationObject(PromptMessageEnum.USER_LOGIN_ERROR, "您还没有注册登录，请先注册登录", locale);
+        }
+        if (!sysUserEntity.getAccountType().equals("管理员")) {
+            return outputEncapsulationObject(PromptMessageEnum.PROCESS_FAIL, "权限错误", locale);
+        }
+        Long id = updateQo.getId();
+        String title = updateQo.getTitle();
+        String content = updateQo.getContent();
+        String author = updateQo.getAuthor();
+        Integer state = updateQo.getState();
+        if (id == null) {
+            return outputEncapsulationObject(PromptMessageEnum.PROCESS_FAIL, "参数错误", locale);
+        }
+        Optional<NoticeEntity> targetOptional = noticeDao.findById(id);
+        if (targetOptional.isEmpty()) {
+            return outputEncapsulationObject(PromptMessageEnum.PROCESS_FAIL, "通知不存在", locale);
+        }
+        NoticeEntity target = targetOptional.get();
+        if (!TextUtils.isEmpty(title)) {
+            target.setTitle(title);
+        }
+        if (!TextUtils.isEmpty(content)) {
+            target.setContent(content);
+        }
+        if (!TextUtils.isEmpty(author)) {
+            target.setAuthor(author);
+        }
+        if (state != null) {
+            target.setState(state);
+        }
+        noticeDao.save(target);
+        return outputEncapsulationObject(PromptMessageEnum.SUCCESS, "更新成功", locale);
     }
 
     /**
@@ -61,7 +140,48 @@ public class NoticeServiceImpl implements NoticeService {
      */
     @Override
     public String queryNotice(String token) {
-        return null;
+        if (TextUtils.isEmpty(token)) {
+            return outputEncapsulationObject(PromptMessageEnum.PROCESS_FAIL, "参数错误", locale);
+        }
+        // 验证token
+        String tokenUserName = TokenUtil.obtainUserNameByToken(token);
+        SysUserEntity sysUserEntity = sysUserDao.selectByUserName(tokenUserName);
+        if (sysUserEntity == null) {
+            return outputEncapsulationObject(PromptMessageEnum.USER_LOGIN_ERROR, "您还没有注册登录，请先注册登录", locale);
+        }
+        Specification<NoticeRelaEntity> specification = (root, criteriaQuery, criteriaBuilder) -> {
+            List<Predicate> predicateList = new ArrayList<>();
+            predicateList.add(criteriaBuilder.equal(root.get("userId").as(Long.class), sysUserEntity.getId()));
+            predicateList.add(criteriaBuilder.equal(root.get("state").as(Integer.class), 1));
+            return criteriaBuilder.and(predicateList.toArray(new Predicate[predicateList.size()]));
+        };
+        //该用户的已读公告关联表
+        List<NoticeRelaEntity> readNoticeRelaList = noticeRelaDao.findAll(specification);
+        //系统的全部公告
+        List<NoticeEntity> noticeList = noticeDao.findAll(Sort.by(Sort.Direction.DESC, "id"));
+        List<NoticeEntity> resultList = new ArrayList<>();
+        for (NoticeEntity notice : noticeList) {
+            Long noticeId = notice.getId();
+            if (!ifRead(readNoticeRelaList, noticeId)) {
+                resultList.add(notice);
+            }
+        }
+        return outputEncapsulationObject(PromptMessageEnum.SUCCESS, resultList, locale);
+    }
+
+    /**
+     * 判断noticeId对应的公告栏通知是否已读
+     */
+    private boolean ifRead(List<NoticeRelaEntity> readNoticeRelaList, Long noticeId) {
+        if (readNoticeRelaList == null || readNoticeRelaList.size() == 0) {
+            return false;
+        }
+        for (NoticeRelaEntity readNoticeRela : readNoticeRelaList) {
+            if (readNoticeRela.getNoticeId().longValue() == noticeId.longValue()) {
+                return true;
+            }
+        }
+        return false;
     }
 
 }