solr-jd

springMVC.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:mvc="http://www.springframework.org/schema/mvc"
    xmlns:context="http://www.springframework.org/schema/context"
    xmlns:aop="http://www.springframework.org/schema/aop" 
    xmlns:tx="http://www.springframework.org/schema/tx"
    xsi:schemaLocation="http://www.springframework.org/schema/beans 
        http://www.springframework.org/schema/beans/spring-beans-4.2.xsd 
        http://www.springframework.org/schema/mvc 
        http://www.springframework.org/schema/mvc/spring-mvc-4.2.xsd 
        http://www.springframework.org/schema/context 
        http://www.springframework.org/schema/context/spring-context-4.2.xsd 
        http://www.springframework.org/schema/aop 
        http://www.springframework.org/schema/aop/spring-aop-4.2.xsd 
        http://www.springframework.org/schema/tx 
        http://www.springframework.org/schema/tx/spring-tx-4.2.xsd">        

        <!-- 配置扫描 器 -->
        <context:component-scan base-package="com.itheima.jd"/>
        <!-- 配置处理器映射器  适配器 -->
        <mvc:annotation-driven/>
        
        <!-- 配置视图解释器 jsp -->
        <bean id="jspViewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
            <property name="prefix" value="/WEB-INF/jsp/"/>
            <property name="suffix" value=".jsp"/>
        </bean>
        <!-- 配置SolrServer对象 -->
        <bean id="solrServer" class="org.apache.solr.client.solrj.impl.HttpSolrServer">
            <constructor-arg index="0" value="http://localhost:8080/solr/collection1"/>
        </bean>
        
</beans>

SearchDaoImpl:

@Repository
public class SearchDaoImpl implements SearchDao {
    
    @Autowired
    private SolrServer solrServer;

    @Override
    public SearchResult search(SolrQuery query) throws Exception {
        // 1）根据Query对象进行查询
        QueryResponse response = solrServer.query(query);
        // 2）得到查询结果
        SolrDocumentList solrDocumentList = response.getResults();
        // 3）取查询结果的总记录数
        long numFound = solrDocumentList.getNumFound();
        // 4）取商品列表，包含高亮的结果
        List<Product> products = new ArrayList<>();
        //取高亮显示的结果
        Map<String, Map<String, List<String>>> highlighting = response.getHighlighting();
        for (SolrDocument solrDocument : solrDocumentList) {
            //创建一个Product对象
            Product product = new Product();
            product.setPid((String) solrDocument.get("id"));
            product.setCatalog_name((String) solrDocument.get("product_catalog_name"));
            //取高亮结果
            List<String> list = highlighting.get(solrDocument.get("id")).get("product_name");
            String productName = "";
            if (list != null && list.size() > 0) {
                productName = list.get(0);
            } else {
                productName = (String) solrDocument.get("product_name");
            }
            product.setName(productName);
            product.setPicture((String) solrDocument.get("product_picture"));
            product.setPrice((float) solrDocument.get("product_price"));
            //添加到商品列表
            products.add(product);
        }
        // 5）把结果封装到SearchResult对象中
        SearchResult result = new SearchResult();
        result.setRecordCount(numFound);
        result.setProductList(products);
        // 6）返回结果
        return result;
    }

}

SearchServiceImpl:

@Service
public class SearchServiceImpl implements SearchService {

    @Autowired
    private SearchDao searchDao;
    
    private static final int ROWS = 60;
    
    @Override
    public SearchResult search(String queryString, String catalog_name, String price, 
            int sort, int page) throws Exception {
        // 1、接收Controller传递过来的参数
        // 2、创建一个SolrQuery对象
        SolrQuery query = new SolrQuery();
        // 3、根据参数设置查询条件。。。。
        if (queryString != null && !"".equals(queryString)) {
            query.setQuery(queryString);
        } else {
            //显示所有商品
            query.setQuery("*:*");
        }
        //分类名称过滤条件
        if (catalog_name != null && !"".equals(catalog_name)) {
            query.addFilterQuery("product_catalog_name:" + catalog_name);
        }
        //价格区间过滤
        if (price != null && !"".equals(price)) {
            //取价格区间
            String[] strings = price.split("-");
            query.addFilterQuery("product_price:["+strings[0]+" TO "+strings[1]+"]");
        }
        //排序条件
        //0：升序 1：降序 默认是升序
        if (sort != 1) {
            query.setSort("product_price", ORDER.asc);
        } else {
            query.setSort("product_price", ORDER.desc);
        }
        //设置分页信息
        query.setStart((page -1) * ROWS);
        query.setRows(ROWS);
        //设置默认搜索域
        query.set("df", "product_keywords");
        //开启高亮显示
        query.setHighlight(true);
        query.addHighlightField("product_name");
        query.setHighlightSimplePre("<em style="color:red">");
        query.setHighlightSimplePost("</em>");
        // 4、调用dao执行查询
        SearchResult searchResult = searchDao.search(query);
        // 5、取查询结果
        long recordCount = searchResult.getRecordCount();
        // 6、计算查询结果的总页数
        long pageCount = recordCount / ROWS;
        if (recordCount % ROWS > 0) {
            pageCount++;
        }
        searchResult.setPageCount(pageCount);
        // 7、返回结果
        return searchResult;
    }

}

SearchController:

@Controller
public class SearchController {

    @Autowired
    private SearchService searchService;
    
    @RequestMapping("list")
    public String search(String queryString, String catalog_name, String price,
            @RequestParam(defaultValue="0")int sort, @RequestParam(defaultValue="1")int page, Model model) throws Exception {
        //调用Service查询商品列表
        SearchResult searchResult = searchService.search(queryString, catalog_name, price, sort, page);
        //把结果传递给jsp
        model.addAttribute("result", searchResult);
        //查询参数回显
        model.addAttribute("queryString", queryString);
        model.addAttribute("catalog_name", catalog_name);
        model.addAttribute("price", price);
        model.addAttribute("sort", sort);
        model.addAttribute("page", page);
        //返回逻辑视图
        return "product_list";
    }
}