0.黑马头条-学习目标
- 完成自媒体文章列表查询功能
- 完成自媒体文章的发布功能
- 完成自媒体文章的查询
- 完成自媒体文章的删除功能
- 完成自媒体文章的上下架功能功能
1.自媒体文章列表查询
1.1.需求分析
1.2.表结构和实体类
leadnews_wemedia数据库：自媒体文章表：wm_news
在heima-leadnews-model中创建WmNews实体类
/**
* <p>
* 自媒体图文内容信息表
* </p>
*
* @author itheima
*/
@Data
@TableName("wm_news")
public class WmNews implements Serializable {
private static final long serialVersionUID = 1L;
/**
* 主键
*/
@TableId(value = "id", type = IdType.AUTO)
private Integer id;
/**
* 自媒体用户ID
*/
@TableField("user_id")
private Integer userId;
/**
* 标题
*/
@TableField("title")
private String title;
/**
* 图文内容
*/
@TableField("content")
private String content;
/**
* 文章布局
0 无图文章
1 单图文章
3 多图文章
*/
@TableField("type")
private Short type;
/**
* 图文频道ID
*/
@TableField("channel_id")
private Integer channelId;
@TableField("labels")
private String labels;
/**
* 创建时间
*/
@TableField("created_time")
private Date createdTime;
/**
* 提交时间
*/
@TableField("submited_time")
private Date submitedTime;
/**
* 当前状态
0 草稿
1 提交（待审核）
2 审核失败
3 人工审核
4 人工审核通过
8 审核通过（待发布）
9 已发布
*/
@TableField("status")
private Short status;
/**
* 定时发布时间，不定时则为空
*/
@TableField("publish_time")
private Date publishTime;
/**
* 拒绝理由
*/
@TableField("reason")
private String reason;
/**
* 发布库文章ID
*/
@TableField("article_id")
private Integer articleId;
/**
* //图片用逗号分隔
*/
@TableField("images")
private String images;
@TableField("enable")
private Short enable;
//状态枚举类
@Alias("WmNewsStatus")
public enum Status{
NORMAL((short)0),SUBMIT((short)1),FAIL((short)2),ADMIN_AUTH((short)3),ADMIN_SUCCESS((short)4),SUCCESS((short)8),PUBLISHED((short)9);
short code;
Status(short code){
this.code = code;
}
public short getCode(){
return this.code;
}
}
}
1.3.接口定义
1.在heima-leadnews-apis中创建接口：com.heima.api.wemedia.WmNewsControllerApi
public interface WmNewsControllerApi {
/**
* 分页带条件查询自媒体文章列表
* @param dto
* @return
*/
public ResponseResult findAll(WmNewsPageReqDto dto);
}
2.在heima-leadnews-model中创建：com.heima.model.wemedia.dtos.WmNewsPageReqDto
@Data
public class WmNewsPageReqDto extends PageRequestDto {
/**
* 状态
*/
private Short status;
/**
* 关键字
*/
private String keyword;
/**
* 频道
*/
private Integer channelId;
/**
* 开始时间
*/
private Date beginPubDate;
/**
* 结束时间
*/
private Date endPubDate;
}
1.4.功能实现
1.在heima-leadnews-wemedia中创建mapper接口：com.heima.wemedia.mapper.WmNewsMapper
@Mapper
public interface WmNewsMapper extends BaseMapper<WmNews> {
}
2.在heima-leadnews-wemedia中创建service接口：com.heima.wemedia.service.WmNewsService
public interface WmNewsService extends IService<WmNews> {
/**
* 分页带条件查询自媒体文章列表
* @param dto
* @return
*/
public ResponseResult findAll(WmNewsPageReqDto dto);
}
3.在heima-leadnews-wemedia中创建service接口实现类：com.heima.wemedia.service.impl.WmNewsServiceImpl
@Service
public class WmNewsServiceImpl extends ServiceImpl<WmNewsMapper, WmNews> implements WmNewsService {
@Value("${fdfs.url}")
private String fileServerUrl;
@Override
public ResponseResult findAll(WmNewsPageReqDto dto) {
//1.参数检查
if (dto == null) {
return ResponseResult.errorResult(AppHttpCodeEnum.PARAM_INVALID);
}
//分页参数检查
dto.checkParam();
//2.分页条件查询
IPage pageParam = new Page(dto.getPage(), dto.getSize());
LambdaQueryWrapper<WmNews> lambdaQueryWrapper = new LambdaQueryWrapper<>();
//状态精确查询
if (dto.getStatus() != null) {
lambdaQueryWrapper.eq(WmNews::getStatus, dto.getStatus());
}
//频道精确查询
if (dto.getChannelId() != null) {
lambdaQueryWrapper.eq(WmNews::getChannelId, dto.getChannelId());
}
//关键字模糊查询
if (StringUtils.isNotBlank(dto.getKeyword())) {
lambdaQueryWrapper.like(WmNews::getTitle, dto.getKeyword());
}
//时间范围查询
if (dto.getBeginPubDate() != null && dto.getEndPubDate() != null) {
lambdaQueryWrapper.between(WmNews::getPublishTime, dto.getBeginPubDate(), dto.getEndPubDate());
}
//根据自媒人精确查询
WmUser user = WmThreadLocalUtils.getUser();
if (user == null) {
return ResponseResult.errorResult(AppHttpCodeEnum.NEED_LOGIN);
}
lambdaQueryWrapper.eq(WmNews::getUserId, user.getId());
//按照发布时间倒序查询
lambdaQueryWrapper.orderByDesc(WmNews::getPublishTime);
IPage pageResult = page(pageParam, lambdaQueryWrapper);
//3.结果封装返回
PageResponseResult responseResult = new PageResponseResult(dto.getPage(), dto.getSize(), (int) pageResult.getTotal());
responseResult.setData(pageResult.getRecords());
responseResult.setHost(fileServerUrl);
return responseResult;
}
}
4.在heima-leadnews-wemedia中创建controller：com.heima.wemedia.controller.v1.WmNewsController
@RestController
@RequestMapping("/api/v1/news")
public class WmNewsController implements WmNewsControllerApi {
@Autowired
private WmNewsService wmNewsService;
@PostMapping("/list")
@Override
public ResponseResult findAll(@RequestBody WmNewsPageReqDto dto) {
return wmNewsService.findAll(dto);
}
}
1.5.测试
导入资料中的前端项目project-heima-leadnews-wemedia-vue-master，并启动
启动后端项目
- heima-leadnews-wemedia-gateway
- heima-leadnews-wemedia
- heima-leadnews-admin-gateway
- heima-leadnews-admin
- nacos
- seata
之后浏览器输入地址：localhost:8080，访问测试。
2.频道列表加载
2.1.需求分析
文章展示列表页面打开的时候，默认自动加载频道列表数据进行展示，就是查询所有频道数据
2.2.接口定义
1.在heima-leadnews-apis中的AdChannelControllerApi新增方法
/**
* 查询所有频道
* @return
*/
public ResponseResult findAll();
2.在heima-leadnews-admin中的AdChannelController中实现方法
@GetMapping("/channels")
@Override
public ResponseResult findAll() {
List<AdChannel> list = adChannelService.list();
return ResponseResult.okResult(list);
}
3.在heima-leadnews-wemedia-gateway的application.yml中增加配置
spring:
application:
name: leadnews-wemedia-gateway
cloud:
nacos:
......
gateway:
globalcors:
......
routes:
.....
- id: admin
uri: lb://leadnews-admin
predicates:
- Path=/admin/**
filters:
- StripPrefix= 1
4.重新启动项目，重新测试
3.自媒体文章-发布修改保存草稿
3.1.需求分析
leadnews_wemedia数据库
自媒体文章表：wm_news
素材表：wm_material
文章素材关系表：wm_news_material
3.2.接口定义
思路分析
- 该功能为保存、修改（是否有id）、保存草稿的共有方法
- 如果有id修改文章，先删除所有素材关联关系
- 如果没有id，保存文章
- 关联内容中的图片与素材的关系
- 关联封面中的图片与素材的关系
- 封面图片如果选择是自动需要从内容中截图图片做为封面图片
- 截取规则为：内容图片的个数小于等于2 则为单图截图一张图，内容图片大于等于3，则为多图，截图三张图，内容中没有图片，则为无图
前端传递给后端的参数
{
"title":"黑马头条项目背景",
"type":"1",//这个 0 是无图 1 是单图 3 是多图 -1 是自动
"labels":"黑马头条",
"publishTime":"2020-03-14T11:35:49.000Z",
"channelId":1,
"images":[
"http://192.168.200.130/group1/M00/00/00/wKjIgl5swbGATaSAAAEPfZfx6Iw790.png"
],
"status":1,
"content":"[
{
"type":"text",
"value":"随着智能手机的普及，人们更加习惯于通过手机来看新闻。由于生活节奏的加快，很多人只能利用碎片时间来获取信息，因此，对于移动资讯客户端的需求也越来越高。黑马头条项目正是在这样背景下开发出来。黑马头条项目采用当下火热的微服务+大数据技术架构实现。本项目主要着手于获取最新最热新闻资讯，通过大数据分析用户喜好精确推送咨询新闻"
},
{
"type":"image",
"value":"http://192.168.200.130/group1/M00/00/00/wKjIgl5swbGATaSAAAEPfZfx6Iw790.png"
}
]"
}
接口定义
1.在heima-leadnews-apis中的WmNewsControllerApi中新增接口方法
public interface WmNewsControllerApi {
....
/**
* 保存、修改文章，保存草稿
* @return
*/
public ResponseResult submitNews(WmNewsDto dto);
}
2.在heima-leadnews-model中创建WmNewsDto
@Data
public class WmNewsDto {
private Integer id;
/**
* 标题
*/
private String title;
/**
* 频道id
*/
private Integer channelId;
/**
* 标签
*/
private String labels;
/**
* 发布时间
*/
private Date publishTime;
/**
* 文章内容
*/
private String content;
/**
* 文章封面类型 0 无图 1 单图 3 多图 -1 自动
*/
private Short type;
/**
* 是否上架 0 下架 1 上架
*/
private Short enable;
/**
* 提交时间
*/
private Date submitedTime;
/**
* 状态 提交为1 草稿为0
*/
private Short status;
/**
* 拒绝理由
*/
private String reason;
/**
* 封面图片列表 多张图以逗号隔开
*/
private List<String> images;
}
3.3.业务层实现1
1.在heima-leadnews-wemedia中的WmNewsController实现方法
@RestController
@RequestMapping("/api/v1/news")
public class WmNewsController implements WmNewsControllerApi {
@Autowired
private WmNewsService wmNewsService;
.......
@Override
public ResponseResult submitNews(@RequestBody WmNewsDto dto) {
return null;
}
}
2.在heima-leadnews-wemedia中的WmNewsService新增接口方法
public interface WmNewsService extends IService<WmNews> {
........
/**
* 自媒体文章发布
* @param dto
* @param isSubmit 是否为提交 1 提交 0 草稿
* @return
*/
public ResponseResult saveNews(WmNewsDto dto,Short isSubmit);
}
3.在heima-leadnews-wemedia中的WmNewsServiceImpl实现方法
/**
* 自媒体文章发布
* @param dto
* @param isSubmit 是否为提交 1 提交 0 草稿
* @return
*/
@Override
public ResponseResult saveNews(WmNewsDto dto, Short isSubmit) {
//1.检查参数
if (dto == null || StringUtils.isBlank(dto.getContent())) {
return ResponseResult.errorResult(AppHttpCodeEnum.PARAM_INVALID);
}
//2.保存或修改文章
WmNews wmNews = new WmNews();
BeanUtils.copyProperties(dto, wmNews);
if (WemediaContans.WM_NEWS_AUTO_TYPE.equals(dto.getType())) {
wmNews.setType(null);
}
if (dto.getImages() != null && dto.getImages().size() > 0) {
//[dfjksdjfdfj.jpg,sdlkjfskld.jpg]
wmNews.setImages(dto.getImages().toString().replace("[", "")
.replace("]", "").replace(fileServerUrl, "")
.replace(" ", ""));
}
//保存或修改文章
saveWmNews(wmNews, isSubmit);
return null;
}
@Autowired
private WmNewsMaterialMapper wmNewsMaterialMapper;
/**
* 保存或修改文章
*
* @param wmNews
* @param isSubmit
*/
private void saveWmNews(WmNews wmNews, Short isSubmit) {
wmNews.setStatus(isSubmit);
wmNews.setUserId(WmThreadLocalUtils.getUser().getId());
wmNews.setCreatedTime(new Date());
wmNews.setSubmitedTime(new Date());
wmNews.setEnable((short) 1);
if (wmNews.getId() == null) {
save(wmNews);
} else {
//如果是修改，则先删除素材与文章的关系
LambdaQueryWrapper<WmNewsMaterial> queryWrapper = new LambdaQueryWrapper();
queryWrapper.eq(WmNewsMaterial::getNewsId, wmNews.getId());
wmNewsMaterialMapper.delete(queryWrapper);
updateById(wmNews);
}
}
4.在heima-leadnews-common中的WemediaContans中增加常量
public class WemediaContans {
public static final Short COLLECT_MATERIAL = 1;//收藏
public static final Short CANCEL_COLLECT_MATERIAL = 0;//收藏
public static final Short WM_NEWS_SINGLE_TYPE = 1;
public static final Short WM_NEWS_NONE_TYPE = 0;
public static final Short WM_NEWS_MANY_TYPE = 3;
public static final Short WM_NEWS_AUTO_TYPE = -1;
public static final String WM_NEWS_TYPE_IMAGE = "image";
public static final Short WM_NEWS_CONTENT_REFERENCE =0;
public static final Short WM_NEWS_COVER_REFERENCE =1;
public static final Short WM_NEWS_ENABLE_UP =1;
}
3.4.业务层实现2
/**
* 自媒体文章发布
* @param dto
* @param isSubmit 是否为提交 1 提交 0 草稿
* @return
*/
@Override
public ResponseResult saveNews(WmNewsDto dto, Short isSubmit) {
.....
//3.关联文章与素材的关系
String content = dto.getContent();
List<Map> list = JSON.parseArray(content, Map.class);
List<String> materials = ectractUrlInfo(list);
.......
return null;
}
/**
* 提取图片信息
*
* @param list
* @return
*/
private List<String> ectractUrlInfo(List<Map> list) {
List<String> materials = new ArrayList<>();
for (Map map : list) {
if (map.get("type").equals(WemediaContans.WM_NEWS_TYPE_IMAGE)) {
String imgUrl = (String) map.get("value");
imgUrl = imgUrl.replace(fileServerUrl, "");
materials.add(imgUrl);
}
}
return materials;
}
3.5.业务层实现3
/**
* 自媒体文章发布
* @param dto
* @param isSubmit 是否为提交 1 提交 0 草稿
* @return
*/
@Override
public ResponseResult saveNews(WmNewsDto dto, Short isSubmit) {
......
//3.1 关联内容中的图片与素材的关系
if (isSubmit == WmNews.Status.SUBMIT.getCode() && materials.size() != 0) {
ResponseResult responseResult = saveRelativeInfoForContent(materials, wmNews.getId());
if (responseResult != null) {
return responseResult;
}
}
......
return null;
}
/**
* 保存素材与文章内容的关系
*
* @param materials
* @param newsId
* @return
*/
private ResponseResult saveRelativeInfoForContent(List<String> materials, Integer newsId) {
return saveRelativeInfo(materials, newsId, WemediaContans.WM_NEWS_CONTENT_REFERENCE);
}
@Autowired
private WmMaterialMapper wmMaterialMapper;
/**
* 保存关系
*
* @param materials
* @param newsId
* @param type
* @return
*/
private ResponseResult saveRelativeInfo(List<String> materials, Integer newsId, Short type) {
//1.获取数据库中的素材信息
LambdaQueryWrapper<WmMaterial> lambdaQueryWrapper = new LambdaQueryWrapper<>();
lambdaQueryWrapper.in(WmMaterial::getUrl, materials);
lambdaQueryWrapper.eq(WmMaterial::getUserId, WmThreadLocalUtils.getUser().getId());
List<WmMaterial> dbMaterials = wmMaterialMapper.selectList(lambdaQueryWrapper);
//2.通过图片的路径获取素材的id
List<String> materialsIds = new ArrayList<>();
if (dbMaterials != null && dbMaterials.size() > 0) {
//<kdjfksdjkfljdsf.jps,2>
Map<String, Integer> uriIdMap = dbMaterials.stream().collect(Collectors.toMap(WmMaterial::getUrl, WmMaterial::getId));
for (String val : materials) {
String materialId = String.valueOf(uriIdMap.get(val));
//没找到
if ("null".equals(materialId)) {
return ResponseResult.errorResult(AppHttpCodeEnum.PARAM_INVALID, "应用图片失效");
}
//找到了
materialsIds.add(materialId);
}
}
//3.批量保存数据
wmNewsMaterialMapper.saveRelations(materialsIds, newsId, type);
return null;
}
在WmNewsMaterialMapper中自定义方法
@Mapper
public interface WmNewsMaterialMapper extends BaseMapper<WmNewsMaterial> {
void saveRelations(@Param("materials") List<String> materialsIds, @Param("newsId")Integer newsId, @Param("type")Short type);
}
创建WmNewsMaterialMapper.xml映射文件
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.heima.wemedia.mapper.WmNewsMaterialMapper">
<insert id="saveRelations">
insert into wm_news_material (material_id, news_id, type, ord)
values
<foreach item="mid" index="ord" collection="materials" separator="," >
(#{mid}, #{newsId}, #{type}, #{ord})
</foreach>
</insert>
</mapper>
3.6.业务实现4
/**
* 自媒体文章发布
* @param dto
* @param isSubmit 是否为提交 1 提交 0 草稿
* @return
*/
@Override
public ResponseResult saveNews(WmNewsDto dto, Short isSubmit) {
.......
//3.2 关联封面中的图片与素材的关系,设置wm_news的type,自动
if (isSubmit == WmNews.Status.SUBMIT.getCode()) {
ResponseResult responseResult = saveRelativeInfoForCover(dto, materials, wmNews);
if (responseResult != null) {
return responseResult;
}
}
return null;
}
/**
* 设置封面图片与素材的关系
*
* @param dto
* @param materials
* @param wmNews
* @return
*/
private ResponseResult saveRelativeInfoForCover(WmNewsDto dto, List<String> materials, WmNews wmNews) {
List<String> images = dto.getImages();
//自动匹配封面
if (dto.getType().equals(WemediaContans.WM_NEWS_AUTO_TYPE)) {
//内容中的图片数量小于等于2 设置为单图
if (materials.size() > 0 && materials.size() <= 2) {
wmNews.setType(WemediaContans.WM_NEWS_SINGLE_TYPE);
images = materials.stream().limit(1).collect(Collectors.toList());
} else if (materials.size() > 2) {
//如果内容中的图片大于2 则设置为多图
wmNews.setType(WemediaContans.WM_NEWS_MANY_TYPE);
images = materials.stream().limit(3).collect(Collectors.toList());
} else {
//内容中没有图片，则是无图
wmNews.setType(WemediaContans.WM_NEWS_NONE_TYPE);
}
//修改文章信息
if (images != null && images.size() > 0) {
wmNews.setImages(images.toString().replace("[", "")
.replace("]", "").replace(fileServerUrl, "")
.replace(" ", ""));
}
updateById(wmNews);
}
//保存封面图片与素材的关系
if (images != null && images.size() > 0) {
ResponseResult responseResult = saveRelativeInfoForImage(images, wmNews.getId());
if (responseResult != null) {
return responseResult;
}
}
return null;
}
/**
* @param images
* @param newsId
* @return
*/
private ResponseResult saveRelativeInfoForImage(List<String> images, Integer newsId) {
List<String> materials = new ArrayList<>();
for (String image : images) {
materials.add(image.replace(fileServerUrl,""));
}
return saveRelativeInfo(materials,newsId,WemediaContans.WM_NEWS_COVER_REFERENCE);
}
3.7.控制器编写及测试
1.在heima-leadnews-wemedia中的WmNewsController中完善方法
@RestController
@RequestMapping("/api/v1/news")
public class WmNewsController implements WmNewsControllerApi {
@Autowired
private WmNewsService wmNewsService;
......
@PostMapping("/submit")
@Override
public ResponseResult submitNews(@RequestBody WmNewsDto dto) {
if(dto.getStatus() == WmNews.Status.SUBMIT.getCode()){
return wmNewsService.saveNews(dto,WmNews.Status.SUBMIT.getCode());
}else{
return wmNewsService.saveNews(dto,WmNews.Status.NORMAL.getCode());
}
}
}
2.启动测试
需要启动的组件
- heima-leadnews-wemedia-gateway
- heima-leadnews-wemedia
- heima-leadnews-admin-gateway
- heima-leadnews-admin
- nacos
- seata
- 前端项目
浏览器输入地址：localhost:8080，访问前端项目进行测试
4.自媒体文章-详情查询
4.1.需求分析
点击修改的时候，就是根据文章id查询，跳转至编辑页面进行展示
4.2.功能实现
1.在heima-leadnews-apis中的WmNewsControllerApi新增接口
public interface WmNewsControllerApi {
.......
/**
* 根据id获取文章信息
* @param id
* @return
*/
public ResponseResult findWmNewsById(Integer id);
}
2.在heima-leadnews-wemedia的WmNewsService新增接口
public interface WmNewsService extends IService<WmNews> {
......
/**
* 根据id获取文章信息
* @param id
* @return
*/
public ResponseResult findWmNewsById(Integer id);
}
3.在heima-leadnews-wemedia的WmNewsServiceImpl中实现方法
/**
* 根据id获取文章信息
* @param id
* @return
*/
@Override
public ResponseResult findWmNewsById(Integer id) {
//1.参数检查
if(id == null){
return ResponseResult.errorResult(AppHttpCodeEnum.PARAM_INVALID,"文章Id不可缺少");
}
//2.查询数据
WmNews wmNews = getById(id);
if(wmNews == null){
return ResponseResult.errorResult(AppHttpCodeEnum.DATA_NOT_EXIST,"文章不存在");
}
//3.结果返回
ResponseResult responseResult = ResponseResult.okResult(wmNews);
responseResult.setHost(fileServerUrl);
return responseResult;
}
4.在heima-leadnews-wemedia的WmNewsController中实现接口方法
@RestController
@RequestMapping("/api/v1/news")
public class WmNewsController implements WmNewsControllerApi {
@Autowired
private WmNewsService wmNewsService;
......
@GetMapping("/one/{id}")
@Override
public ResponseResult findWmNewsById(@PathVariable("id") Integer id) {
return wmNewsService.findWmNewsById(id);
}
}
5.启动测试
5.自媒体文章-删除
5.1.需求分析
注意
- 当文章状态为9(已发布)且已上架则不能删除文章，下架状态可以删除，如果是其他状态可以删除
- 删除文章之前需要先把素材与文章的关系删除掉
5.2.功能实现
1.在heima-leadnews-apis中的WmNewsControllerApi新增接口
public interface WmNewsControllerApi {
.......
/**
* 删除文章
* @param id
* @return
*/
public ResponseResult delNews(Integer id);
}
2.在heima-leadnews-wemedia的WmNewsService新增接口
public interface WmNewsService extends IService<WmNews> {
......
/**
* 删除文章
* @param id
* @return
*/
public ResponseResult delNews(Integer id);
}
3.在heima-leadnews-wemedia的WmNewsServiceImpl中实现方法
/**
* 删除文章
* @param id
* @return
*/
@Override
public ResponseResult delNews(Integer id) {
//1.检查参数
if(id == null){
return ResponseResult.errorResult(AppHttpCodeEnum.PARAM_INVALID,"文章Id不可缺少");
}
//2.获取数据
WmNews wmNews = getById(id);
if(wmNews == null){
return ResponseResult.errorResult(AppHttpCodeEnum.DATA_NOT_EXIST,"文章不存在");
}
//3.判断当前文章的状态 status==9 enable == 1
if(wmNews.getStatus().equals(WmNews.Status.PUBLISHED.getCode()) && wmNews.getEnable().equals(WemediaContans.WM_NEWS_ENABLE_UP)){
return ResponseResult.errorResult(AppHttpCodeEnum.DATA_NOT_EXIST,"文章已发布，不能删除");
}
//4.去除素材与文章的关系
wmNewsMaterialMapper.delete(Wrappers.<WmNewsMaterial>lambdaQuery().eq(WmNewsMaterial::getNewsId,wmNews.getId()));
//5.删除文章
removeById(wmNews.getId());
return ResponseResult.okResult(AppHttpCodeEnum.SUCCESS);
}
4.在heima-leadnews-wemedia的WmNewsController中实现接口方法
@RestController
@RequestMapping("/api/v1/news")
public class WmNewsController implements WmNewsControllerApi {
@Autowired
private WmNewsService wmNewsService;
........
@GetMapping("/del_news/{id}")
@Override
public ResponseResult delNews(@PathVariable("id") Integer id) {
return wmNewsService.delNews(id);
}
}
5.启动测试
6.自媒体文章-上架和下架
6.1.需求分析
下架
上架
注意
- 当前已经发布（状态为9）的文章可以上架（enable = 1），也可以下架（enable = 0）
- 在上架和下架操作的同时，需要同步app端的文章配置信息，暂时不做，后期讲到审核文章的时候再优化
6.2.功能实现
1.在heima-leadnews-apis中的WmNewsControllerApi新增接口
public interface WmNewsControllerApi {
........
/**
* 文章上下架
* @param dto
* @return
*/
public ResponseResult downOrUp(WmNewsDto dto);
}
2.在heima-leadnews-wemedia的WmNewsService新增接口
public interface WmNewsService extends IService<WmNews> {
.....
/**
* 文章上下架
* @param dto
* @return
*/
public ResponseResult downOrUp(WmNewsDto dto);
}
3.在heima-leadnews-wemedia的WmNewsServiceImpl中实现方法
/**
* 文章上下架
* @param dto
* @return
*/
@Override
public ResponseResult downOrUp(WmNewsDto dto) {
//1.检查参数
if(dto == null || dto.getId() == null){
return ResponseResult.errorResult(AppHttpCodeEnum.PARAM_INVALID);
}
//2.查询文章
WmNews wmNews = getById(dto.getId());
if(wmNews == null){
return ResponseResult.errorResult(AppHttpCodeEnum.DATA_NOT_EXIST,"文章不存在");
}
//3.判断文章是否发布
if(!wmNews.getStatus().equals(WmNews.Status.PUBLISHED.getCode())){
return ResponseResult.errorResult(AppHttpCodeEnum.DATA_NOT_EXIST,"当前文章不是发布状态，不能上下架");
}
//4.修改文章状态，同步到app端（后期做）TODO
if(dto.getEnable() != null && dto.getEnable() > -1 && dto.getEnable() < 2){
update(Wrappers.<WmNews>lambdaUpdate().eq(WmNews::getId,dto.getId()).set(WmNews::getEnable,dto.getEnable()));
}
return ResponseResult.okResult(AppHttpCodeEnum.SUCCESS);
}
4.在heima-leadnews-wemedia的WmNewsController中实现接口方法
@RestController
@RequestMapping("/api/v1/news")
public class WmNewsController implements WmNewsControllerApi {
@Autowired
private WmNewsService wmNewsService;
.........
@PostMapping("/down_or_up")
@Override
public ResponseResult downOrUp(@RequestBody WmNewsDto dto) {
return wmNewsService.downOrUp(dto);
}
}
5.启动测试