第六课 Spring整合solr实现文章的添加与搜索

maven里添加依赖

org.apache.solr
solr-solrj
4.10.2


commons-logging
commons-logging
1.2

spring配置文件里添加



添加文章
Contoller或service里添加

@Autowired
private SolrServer solrServer;

public int addArticle(Article article) {
int result = articleMapper.addArticle(article);

    SolrInputDocument inputDocument = new SolrInputDocument();
    //向文档中添加域以及对应的值,注意：所有的域必须在schema.xml中定义过,前面已经给出过我定义的域。
    UUID uuid = UUID.randomUUID();
    inputDocument.addField("id", uuid);
    inputDocument.addField("article_title", article.getTitle());
    inputDocument.addField("article_content", article.getContent());
    inputDocument.addField("article_id", article.getAid());
    try {
        solrServer.add(inputDocument);
        solrServer.commit();
    } catch (SolrServerException e) {
        e.printStackTrace();
    } catch (IOException e) {
        e.printStackTrace();
    }
    return result;
}

检索文章
public List

queryArticles(String keyword,SolrQueryPageInfo solrQueryPageInfo) {

    List
 articleList = new ArrayList<>();

    SolrQuery solrQuery = new SolrQuery();
    solrQuery.set("q",keyword);
    solrQuery.set("df","article_keywords");//df=>default field
    solrQuery.setSort("id", SolrQuery.ORDER.asc);

    solrQuery.setStart(solrQueryPageInfo.getPageIndex()*solrQueryPageInfo.getPageSize());
    solrQuery.setRows(solrQueryPageInfo.getPageSize());

    //开启高亮显示
    solrQuery.setHighlight(true);
    solrQuery.addHighlightField("article_title");
    solrQuery.addHighlightField("article_content");
    solrQuery.setHighlightSimplePre("");
    solrQuery.setHighlightSimplePost("");

    QueryResponse queryResponse = null;
    try {
        queryResponse = solrServer.query(solrQuery);
    } catch (SolrServerException e) {
        e.printStackTrace();
    }
    SolrDocumentList solrDocumentList = queryResponse.getResults();
    int total = (int) solrDocumentList.getNumFound();
    solrQueryPageInfo.setTotal(total);
    Map>> mapMapHighlighting = queryResponse.getHighlighting();

    for(SolrDocument solrDocument : solrDocumentList)
    {
        Article article = new Article();
        String id = (String)solrDocument.get("id");
        String article_title = (String)solrDocument.get("article_title");
        String article_content = (String)solrDocument.get("article_content");
        Long article_id = (Long)solrDocument.get("article_id");
        article.setTitle(article_title);
        article.setContent(article_content);
        article.setAid(article_id.intValue());
        Map> map = mapMapHighlighting.get(id);//一个商品，一个json对象

        for(Map.Entry> entry : map.entrySet())
        {
            if(entry.getKey().equals("article_title"))
            {
                article.setTitle(entry.getValue().get(0));
            }
            if(entry.getKey().equals("article_content"))
            {
                article.setContent(entry.getValue().get(0));
            }

        }

        articleList.add(article);

    }

    return articleList;
}

Controller里调用

@RequestMapping("query")
public void queryArticles(String keyword, Model model, SolrQueryPageInfo solrQueryPageInfo, HttpServletResponse response) throws IOException {
response.setContentType("text/html;charset=utf-8");

    ArticlePageInfo articlePageInfo = new ArticlePageInfo();
    List
 articleList = articleService.queryArticles(keyword,solrQueryPageInfo);
    articlePageInfo.setTotal(solrQueryPageInfo.getTotal());
    articlePageInfo.setArticles(articleList);

    String jsonString = JSON.toJSONString(articlePageInfo);
    response.getWriter().println(jsonString);
}

ArticlePageInfo
public class ArticlePageInfo {
int total;
List

articles;

public int getTotal() {
    return total;
}

public void setTotal(int total) {
    this.total = total;
}

public List
 getArticles() {
    return articles;
}

public void setArticles(List
 articles) {
    this.articles = articles;
}

}
SolrQueryPageInfo
public class SolrQueryPageInfo {
int pageIndex;
int pageSize;
int total;

public int getPageIndex() {
    return pageIndex;
}

public void setPageIndex(int pageIndex) {
    this.pageIndex = pageIndex;
}

public int getPageSize() {
    return pageSize;
}

public void setPageSize(int pageSize) {
    this.pageSize = pageSize;
}

public int getTotal() {
    return total;
}

public void setTotal(int total) {
    this.total = total;
}

}
index_query.jsp
<%--
Created by IntelliJ IDEA.
User: ttc
Date: 2018/7/6
Time: 14:06
To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<%@taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>

可能的问题
如果想向solr添加带html标签的文本，可以使用jsoup选中元素，调用text()方法脱去全部的html标签，再保存到索引中。

谢谢