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第六课 Spring整合solr实现文章的添加与搜索

第六课 Spring整合solr实现文章的添加与搜索

作者: Arroganter | 来源:发表于2018-08-27 08:38 被阅读40次

maven里添加依赖
<dependency>
<groupId>org.apache.solr</groupId>
<artifactId>solr-solrj</artifactId>
<version>4.10.2</version>
</dependency>
<dependency>
<groupId>commons-logging</groupId>
<artifactId>commons-logging</artifactId>
<version>1.2</version>
</dependency>
spring配置文件里添加
<bean id="httpSolrServer" class="org.apache.solr.client.solrj.impl.HttpSolrServer">
<constructor-arg index="0" value="http://192.168.25.128:8080/solr/collection1"/>
</bean>
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<Article> queryArticles(String keyword,SolrQueryPageInfo solrQueryPageInfo) {

    List<Article> 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("<em>");
    solrQuery.setHighlightSimplePost("</em>");

    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<String, Map<String, List<String>>> 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<String, List<String>> map = mapMapHighlighting.get(id);//一个商品,一个json对象

        for(Map.Entry<String, List<String>> 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<Article> 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<Article> articles;

public int getTotal() {
    return total;
}

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

public List<Article> getArticles() {
    return articles;
}

public void setArticles(List<Article> 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" %>
<html>
<head>
<title>Title</title>
<style>

  ul{
    list-style: none;
  }

  em{
    color:red;
    font-style: normal;
  }

</style>
<link href="${pageContext.request.contextPath}/thirdpart/page/mricode.pagination.css" rel="stylesheet">
<script src="${pageContext.request.contextPath}/thirdpart/page/jquery2.1.4.min.js"></script>
<script src="${pageContext.request.contextPath}/thirdpart/page/mricode.pagination.js"></script>
<script src="${pageContext.request.contextPath}/thirdpart/page/arttemplate.min.js"></script>

<script>
    window.onload = function () {

        $('#btn').click(function () {
            var page = $("#page");
            page.pagination({
                pageIndex: 0,
                pageSize: 2,
                showInfo: true,
                showJump: true,
                showPageSizes: true,
                remote:{
                    url:' ${pageContext.request.contextPath}/article/query',
                    params: $('form').serializeArray(),
                    success:function (data) {

                        var html = template('test',data);
                        document.getElementById('content').innerHTML = html;
                    }
                }
            });//json 对象
        })

    }
</script>

</head>
<body>

<form action="#">
  <input type="text" name="keyword">
  <input type="button" value="搜索" id="btn">
</form>

<div id="content">

</div>
<div id="page" class="m-pagination"></div>

</body>

<script id="test" type="text/html">
<ul class="artilce-list">

    {{each articles as article}}
    <li>
      <div><a href="${pageContext.request.contextPath}/article/view_article/{{article.aid}}">{{#article.title}}</a></div>
      <div>{{#article.content}}</div>
    </li>
  {{/each}}
</ul>

</script>
</html>

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

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