Java调用solrj5.5.3接口，查询数据

前期准备

搭建solr服务

参考上一篇，搭建solr搜索服务。

添加依赖

maven工程的话，添加如下依赖，

<!-- https://mvnrepository.com/artifact/org.apache.solr/solr-solrj -->
<dependency>
    <groupId>org.apache.solr</groupId>
    <artifactId>solr-solrj</artifactId>
    <version>5.5.3</version>
</dependency>

也可以自己导入jar包

在solr安装目录下，找到solr-5.5.3\dist\solrj-lib路径，添加里面所有的jar包到自己的工程，别忘了在外面的文件夹还有个solr-solrj-5.5.3.jar包，一起拷贝。

编写调用代码

这里简单给个示例（包含分页），Spring mvc工程的：

    @ResponseBody
    @RequestMapping(value = "/searchByKeyWord", method =
    { RequestMethod.GET }, produces = "application/json; charset=utf-8")
    @ApiOperation(value = "搜索接口", notes = "", httpMethod = "GET")
    public BaseResponse<Map<String, Object>> search(HttpServletRequest request,
        HttpServletResponse response,
        @RequestParam(value = "keyWord", defaultValue = "") String keyWord,
        @RequestParam(value = "pageSize", defaultValue = "10") long pageSize,
        @RequestParam(value = "pageOffset", defaultValue = "0") long pageOffset)
    {
        System.out.println(pageSize + "," + pageOffset);
        try
        {
            SolrClient solr = new HttpSolrClient(solrServiceUrl);
            SolrQuery query = new SolrQuery();
            String kw = URLDecoder.decode(keyWord, "UTF-8");
            query.set("q", "title:" + kw + " and content:" + kw);
            query.set("start", String.valueOf(pageOffset * pageSize));
            query.set("rows", String.valueOf(pageSize));
            query.addHighlightField("content");
            query.setHighlight(true).setHighlightSnippets(1);
            query.setParam("hl.fl", "title,content");
            query.setHighlightFragsize(300);
            QueryResponse queryResponse = solr.query(query);
            Map<String, Map<String, List<String>>> highlightMap = queryResponse.getHighlighting();
            Map<String, Object> result = new HashMap<String, Object>();
            List<SearchModel> rstList = queryResponse.getBeans(SearchModel.class);
            for (SearchModel obj : rstList)
            {
                Map<String, List<String>> hiStr = highlightMap.get(obj.getUrl());
                List<String> contentList = hiStr.get("content");
                if (contentList != null && contentList.size() > 0)
                    obj.setContentHighlight(contentList.get(0));
                List<String> titleList = hiStr.get("title");
                if (titleList != null && titleList.size() > 0)
                    obj.setTitleHighlight(titleList.get(0));
            }
            result.put("success", true);
            result.put("key", URLDecoder.decode(keyWord, "UTF-8"));
            result.put("list", rstList);
            result.put("totalCount", queryResponse.getResults().getNumFound());
            solr.close();
            return BaseResponse.buildSuccessResponse(result);
        }
        catch (Exception e)
        {
            LOGGER.error(e.toString(), e);
            return BaseResponse
                .buildFailResponse(HttpStatus.INTERNAL_SERVER_ERROR.value(), "搜索异常.");
        }

    }

以下是SearchModel类，注意要与data-config.xml配置的字段对应起来，还有就是不要忘了在字段前面加上@Field注解（org.apache.solr.client.solrj.beans.Field）。

package com.cetiti.eppsas.model;

import org.apache.solr.client.solrj.beans.Field;

public class SearchModel
{
    private String origin;
    private String title;
    private String content;
    private String linkUrl;
    private String keyWord;
    private long postTime;
    private String url;
    private String titleHighlight;
    private String contentHighlight;

    /**
     * @return the origin
     */
    public String getOrigin()
    {
        return origin;
    }

    /**
     * @param origin the origin to set
     */
    @Field("origin")
    public void setOrigin(String origin)
    {
        this.origin = origin;
    }

    /**
     * @return the title
     */
    public String getTitle()
    {
        return title;
    }

    /**
     * @param title the title to set
     */
    @Field("title")
    public void setTitle(String title)
    {
        this.title = title;
    }

    /**
     * @return the content
     */
    public String getContent()
    {
        return content;
    }

    /**
     * @param content the content to set
     */
    @Field("content")
    public void setContent(String content)
    {
        this.content = content;
    }

    /**
     * @return the linkUrl
     */
    public String getLinkUrl()
    {
        return linkUrl;
    }

    /**
     * @param linkUrl the linkUrl to set
     */
    @Field("linkUrl")
    public void setLinkUrl(String linkUrl)
    {
        this.linkUrl = linkUrl;
    }

    /**
     * @return the keyWord
     */
    public String getKeyWord()
    {
        return keyWord;
    }

    /**
     * @param keyWord the keyWord to set
     */
    @Field("keyWord")
    public void setKeyWord(String keyWord)
    {
        this.keyWord = keyWord;
    }



    /**
     * @return the url
     */
    public String getUrl()
    {
        return url;
    }

    /**
     * @param url the url to set
     */
    @Field("url")
    public void setUrl(String url)
    {
        this.url = url;
    }



    /**
     * @return the postTime
     */
    public long getPostTime()
    {
        return postTime;
    }

    /**
     * @param postTime the postTime to set
     */
    @Field("postTime")
    public void setPostTime(long postTime)
    {
        this.postTime = postTime;
    }

    /**
     * @return the titleHighlight
     */
    public String getTitleHighlight()
    {
        return titleHighlight;
    }

    /**
     * @param titleHighlight the titleHighlight to set
     */
    public void setTitleHighlight(String titleHighlight)
    {
        this.titleHighlight = titleHighlight;
    }

    /**
     * @return the contentHighlight
     */
    public String getContentHighlight()
    {
        return contentHighlight;
    }

    /**
     * @param contentHighlight the contentHighlight to set
     */
    public void setContentHighlight(String contentHighlight)
    {
        this.contentHighlight = contentHighlight;
    }

}

前端示例

其它的根据业务需求具体扩展吧，在前端可以对查询到的数据进行一些自定义展示（关键字标红高亮，每条记录分类，点击跳转到记录详情页面）。