solrJ的使用

solr查询参数说明

q - 查询条件，必须的，如查询所有使用：*:*

fq - 过滤查询，额外的查询条件，如：product_price:[* TO 20]

sort - 排序，格式：sort=<field name>+<desc|asc>[,<field name>+<desc|asc>]…如：

start、rows - rows指定返回结果最多有多少条记录，配合start来实现分页：

fl - 指定返回那些字段内容，用逗号或空格分隔多个：

df - 指定一个搜索Field：

wt - (writer type)指定输出格式，可以有 xml, json, php, phps, 后面 solr 1.3增加的，要用通知我们，因为默认没有打开

 hl 是否高亮 ,设置高亮Field，设置格式前缀和后缀：

使用步骤：

首先将solr的jar包添加到工程中

<!-- solr客户端 -->
        <dependency>
            <groupId>org.apache.solr</groupId>
            <artifactId>solr-solrj</artifactId>
            <version>4.10.3 </version>
        </dependency>    

● 添加/更新文档

@Test
    public void addDocument() throws Exception {
        SolrServer solrServer = new HttpSolrServer("http://39.106.171.57:8080/solr");
        SolrInputDocument document = new SolrInputDocument();
        document.addField("id","test003");
        document.addField("item_title","测试商品3");
        document.addField("item_price","299");
        solrServer.add(document);
        solrServer.commit();
    }

● 根据id删除文档

@Test
    public void deleteDocumentById() throws Exception{
        SolrServer solrServer = new HttpSolrServer("http://39.106.171.57:8080/solr");
        solrServer.deleteById("test001");
        solrServer.commit();
    }

● 根据查询删除文档

@Test
    public void deleteDocumentByQuery() throws Exception{
        SolrServer solrServer = new HttpSolrServer("http://39.106.171.57:8080/solr");
        solrServer.deleteByQuery("item_price:199");
        solrServer.commit();
    }

● 简单查询

@Test
    public void queryDocument() throws Exception{
        SolrServer solrServer = new HttpSolrServer("http://39.106.171.57:8080/solr");
        SolrQuery query = new SolrQuery();
        query.setQuery("*:*");
        QueryResponse response = solrServer.query(query);
        SolrDocumentList solrDocumentList = response.getResults();
        System.out.println("查询结果的记录数："+solrDocumentList.getNumFound());
        for (SolrDocument solrDocument: solrDocumentList) {
            System.out.println(solrDocument.get("id"));
            System.out.println(solrDocument.get("item_title"));
            System.out.println(solrDocument.get("item_price"));
        }
    }

● 多条件查询

@Test
    public void queryDocumentWithConditions() throws Exception{
        SolrServer solrServer = new HttpSolrServer("http://39.106.171.57:8080/solr");
        SolrQuery query = new SolrQuery();
        query.setQuery("*:*");
        //过滤条件
        query.setFilterQueries("product_catalog_name:幽默杂货");
        //排序条件
        query.setSort("product_price", SolrQuery.ORDER.asc);
        //分页处理
        query.setStart(0);
        query.setRows(10);
        //结果中域的列表
        query.setFields("id","product_name","product_price","product_catalog_name","product_picture");
        //设置默认搜索域
        query.set("df", "product_keywords");
        QueryResponse response = solrServer.query(query);
        SolrDocumentList solrDocumentList = response.getResults();
        System.out.println("查询结果的记录数："+solrDocumentList.getNumFound());
        for (SolrDocument solrDocument: solrDocumentList) {
            System.out.println(solrDocument.get("id"));
            System.out.println(solrDocument.get("item_title"));
            System.out.println(solrDocument.get("item_price"));
        }
    }

● 查询结果高亮显示

@Test
    public void queryDocumentWithHighLighting() throws Exception{
        SolrServer solrServer = new HttpSolrServer("http://39.106.171.57:8080/solr");
        SolrQuery query = new SolrQuery();
        query.setQuery("测试");
        //高亮查询必须设置默认搜索域，不设置的话会自动去schema.xml中找df（schema.xml的df默认值为text）
        query.set("df", "item_title");
        query.setHighlight(true);
        query.addHighlightField("item_title");
        query.setHighlightSimplePre("<em>");
        query.setHighlightSimplePost("</em>");
        QueryResponse response = solrServer.query(query);
        SolrDocumentList solrDocumentList = response.getResults();
        System.out.println("查询结果总数："+solrDocumentList.getNumFound());
        Map<String, Map<String, List<String>>> highlighting = response.getHighlighting();
        // Map K id V Map
        // Map K 域名称 V List
        for(SolrDocument solrDocument: solrDocumentList){
            Map<String, List<String>> map = highlighting.get(solrDocument.get("id"));
            List<String> list = map.get("item_title");
            //判断是否有高亮内容
            if (null != list) {
                System.out.println(list.get(0));
            } else {
                System.out.println(solrDocument.get("item_title"));
            }
        }
    }

 Solr Admin操作：

删除文档：

<delete>
<query>item_title:222</query>
</delete>
<commit/>

<delete>
<id>15687545423</id>
</delete>
<commit/>