✅P190_商城业务-检索服务-面包屑导航

一、面包屑导航

页面展示

完成”商城业务-检索服务-条件筛选联动“后，再看效果！

---

二、面包屑导航Vo

封装导航栏VO

cfmall-search/src/main/java/com/gyz/cfmall/search/vo/SearchResult.java

//省略其它代码...
private List<NavVo> navs;
@Data
public static class NavVo {
    private String navName;
    private String navValue;
    private String link;
}

---

三、封装面包屑导航数据

com.gyz.cfmall.search.service.impl.MallSearchServiceImpl#buildSearchResult

//6、构建面包屑导航
if (param.getAttrs() != null && param.getAttrs().size() > 0) {
    List<SearchResult.NavVo> collect = param.getAttrs().stream().map(attr -> {
        //1、分析每一个attrs传过来的参数值
        SearchResult.NavVo navVo = new SearchResult.NavVo();
        String[] s = attr.split("_");
        //封装属性值
        navVo.setNavValue(s[1]);

        //封装属性名
        R r = productFeignService.attrInfo(Long.parseLong(s[0]));
        if (r.getCode() == 0) {
            AttrResponseVo data = r.getData("attr", new TypeReference<AttrResponseVo>() {
            });
            navVo.setNavName(data.getAttrName());
        } else {
            navVo.setNavName(s[0]);
        }


        return navVo;
    }).collect(Collectors.toList());
    result.setNavs(collect);
}

---

四、获取属性名

属性名的获取要通过远程服务调用product服务进行查询

4.1 依赖管理

4.1.1 导入cloud的版本

cfmall-search/pom.xml

<spring-cloud.version>Greenwich.SR3</spring-cloud.version>

4.1.2 导入cloud依赖管理

cfmall-search/pom.xml

<dependencyManagement>
    <dependencies>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-dependencies</artifactId>
            <version>${spring-cloud.version}</version>
            <type>pom</type>
            <scope>import</scope>
        </dependency>
    </dependencies>
</dependencyManagement>

4.1.3 导入openfeign的依赖

<!--cfmall-search/pom.xml-->
<dependency>
    <groupId>org.springframework.cloud</groupId>
    <artifactId>spring-cloud-starter-openfeign</artifactId>
</dependency>

4.2 开启远程服务调用功能

添加@EnableFeignClients注解，

com.gyz.cfmall.search.CfmallSearchApplication

@SpringBootApplication(exclude = DataSourceAutoConfiguration.class)
@EnableDiscoveryClient
@EnableFeignClients
public class CfmallSearchApplication {

    public static void main(String[] args) {
        SpringApplication.run(CfmallSearchApplication.class, args);
    }
}

4.3 编写feign接口

com.gyz.cfmall.search.feign.ProductFeignService

@FeignClient("cfmall-product") 
public interface ProductFeignService {
    @GetMapping("/product/attr/info/{attrId}")
    R attrInfo(@PathVariable("attrId") Long attrId);
}

4.4 返回数据格式处理

/**
 * 利用fastjson进行反序列化
 * com.gyz.common.utils.R#getData(java.lang.String, com.alibaba.fastjson.TypeReference<T>)
 */
public <T> T getData(String key, TypeReference<T> typeReference) {
    //默认是map
    Object data = get(key);   
    String jsonString = JSON.toJSONString(data);
    T t = JSON.parseObject(jsonString, typeReference);
    return t;
}

---

4.5 逻辑代码

cfmall-product/src/main/java/com/gyz/cfmall/product/controller/AttrController.java

/**
 * 信息
 */
@RestController
@RequestMapping("product/attr")
public class AttrController {
    @Autowired
    private AttrService attrService;
	
    @RequestMapping("/info/{attrId}")
	public R info(@PathVariable("attrId") Long attrId) {
    	AttrRespVo respVo = attrService.getAttrInfo(attrId);
    	return R.ok().put("attr", respVo);
	}
}

cfmall-product/src/main/java/com/gyz/cfmall/product/service/impl/AttrServiceImpl.java

@Override
public AttrRespVo getAttrInfo(Long attrId) {
    //查询详细信息
    AttrEntity attrEntity = this.getById(attrId);

    //查询分组信息
    AttrRespVo respVo = new AttrRespVo();
    BeanUtils.copyProperties(attrEntity, respVo);

    //判断是否是基本类型
    if (attrEntity.getAttrType() == ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode()) {
        //1、设置分组信息
        AttrAttrgroupRelationEntity relationEntity = relationDao.selectOne
                (new QueryWrapper<AttrAttrgroupRelationEntity>().eq("attr_id", attrId));
        if (relationEntity != null) {
            respVo.setAttrGroupId(relationEntity.getAttrGroupId());
            //获取分组名称
            AttrGroupEntity attrGroupEntity = attrGroupDao.selectById(relationEntity.getAttrGroupId());
            if (attrGroupEntity != null) {
                respVo.setGroupName(attrGroupEntity.getAttrGroupName());
            }
        }
    }
    //2、设置分类信息
    Long catelogId = attrEntity.getCatelogId();
    Long[] catelogPath = categoryService.findCatelogPath(catelogId);
    respVo.setCatelogPath(catelogPath);

    CategoryEntity categoryEntity = categoryDao.selectById(catelogId);
    if (categoryEntity != null) {
        respVo.setCatelogName(categoryEntity.getName());
    }

    return respVo;
}

cfmall-product/src/main/java/com/gyz/cfmall/product/vo/AttrRespVo.java

@Data
public class AttrRespVo extends AttrVo {

    private String catelogName;

    private String groupName;

    private Long[] catelogPath;

}