solrj操作索引库

1.solrj环境搭建

• Solr：5.3.1
• Jdk环境：1.8
• IDE环境：IDEA

<properties>
  <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
  <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
</properties>

<dependencies>
  <!--solrj-->
  <dependency>
    <groupId>org.apache.solr</groupId>
    <artifactId>solr-solrj</artifactId>
    <version>5.3.1</version>
  </dependency>

  <dependency>
    <groupId>org.slf4j</groupId>
    <artifactId>slf4j-jcl</artifactId>
    <version>1.7.7</version>
  </dependency>

  <dependency>
    <groupId>commons-logging</groupId>
    <artifactId>commons-logging</artifactId>
    <version>1.1.1</version>
  </dependency>

  <!-- Test dependencies -->
  <dependency>
    <groupId>junit</groupId>
    <artifactId>junit</artifactId>
    <version>4.12</version>
    <scope>test</scope>
  </dependency>
</dependencies>

<build>
  <defaultGoal>install</defaultGoal>
  <plugins>
    <plugin>
      <groupId>org.apache.maven.plugins</groupId>
      <artifactId>maven-compiler-plugin</artifactId>
      <version>3.6.1</version>
      <configuration>
        <source>1.8</source>
        <target>1.8</target>
      </configuration>
    </plugin>
    <plugin>
      <groupId>org.apache.maven.plugins</groupId>
      <artifactId>maven-resources-plugin</artifactId>
      <version>3.0.2</version>
      <configuration>
        <encoding>UTF-8</encoding>
      </configuration>
    </plugin>
  </plugins>

  <!--IDEA编译src的java文件，而目录下的xml文件并不会一起打包，需要手动指定哪些配置文件需要读取-->
  <resources>
    <resource>
      <directory>src/main/java</directory>
      <includes>
        <include>**/*.xml</include>
      </includes>
    </resource>
  </resources>
</build>

2.代码时间

solrj的所有操作,都围绕HttpSolrClient

公共代码段

在以下测试类中,都要使用这个HttpSolrClient , 于是我们可以预先对其初始化

private HttpSolrClient httpSolrClient;

@Before
public void init(){
    //solr的http请求地址/索引库名
    String baseURL = "http://localhost:8080/solr/collection1";
    httpSolrClient = new HttpSolrClient(baseURL);
}

2.1 增加索引

httpSolrClient.add(document);
需要提交事务

/***
 * 增加索引
 * @throws Exception
 */
@Test
public void testCreateIndex() throws  Exception{
    //Document 创建文档对象
    SolrInputDocument document = new SolrInputDocument();
    //添加文档域
    document.addField("id","c1001");
    document.addField("content_ik","我爱传智播客");

    //httpSolrClient实现对Solr的操作
    httpSolrClient.add(document);

    //提交
    httpSolrClient.commit();
}

2.2 删除索引

• 根据ID删除数据
• 根据条件删除数据
• 删除所有

@Test
public void testDeleteIndex() throws  Exception{
    //1、根据ID删除数据
    //httpSolrClient.deleteById("c1001");

    //2、根据条件删除数据
    //httpSolrClient.deleteByQuery("content_ik:推荐");

    //3、删除所有
    httpSolrClient.deleteByQuery("*:*");

    //提交
    httpSolrClient.commit();
}

2.3 查询索引

简单查询
//创建Query查询，查询所有
SolrQuery solrQuery = new SolrQuery(“:“);

总是需要我们自己将查询出来的结果一个个注入到bean中是十分麻烦的,想要偷懒的可以参考 自己定义的注解和工具类封装Document

@Test
public void testSimpleSearch() throws  Exception{
    //创建Query查询，查询所有
    SolrQuery solrQuery = new SolrQuery("*:*");

    //执行查询
    QueryResponse response = httpSolrClient.query(solrQuery);
    //获取SolrDocumentList对象
    SolrDocumentList results = response.getResults();

    //结果集
    for (SolrDocument result : results) {
    //可以使用自定义的注解和工具类解决这个封装的问题

    Object o = result.get(索引域名);

    }

}

复杂查询

依照功能界面进行设置参数

@Test
public void fun01() throws IOException, SolrServerException {
    /***
     * 复合查询
     * @throws IOException
     * @throws SolrServerException
     */
    //搜索商品名字里带有小黄人的商品
    SolrQuery solrQuery = new SolrQuery("product_name:小黄人");

    //设置默认域
    solrQuery.set("df", "product_name");

    //设置过滤条件
    solrQuery.addFilterQuery("product_price:[8.5 TO 10]");

    //价格排序
    solrQuery.setSort("product_price", SolrQuery.ORDER.desc);

    //分页设置
    solrQuery.setStart(0);
    solrQuery.setRows(5);

    //高亮设置
    solrQuery.setHighlight(true);           //开启高亮
    solrQuery.addHighlightField("product_name");    //设置高亮域
    solrQuery.setHighlightSimplePre("<font style='color:red'>");
    solrQuery.setHighlightSimplePost("</font>");

    //执行查询
    QueryResponse response = httpSolrClient.query(solrQuery);

    //结果集
    for (SolrDocument result : response.getResults()) {
        //设置高亮,将result中对应域对象的值替换成带有高亮标签的值
        setHighlight(response, result, "product_name");
        //使用自定义的工具类封装数据
        Product product = Doc2BeanUtil.getBean(Product.class, result);
        System.out.println(product);
    }
}

设置高亮的工具方法

/**
 * 设置高亮
 * @param response
 * @param result
 * @param filedName
 */
private void setHighlight(QueryResponse response, SolrDocument result,  String filedName) {
    //获取高亮数据
    Map<String, Map<String, List<String>>> highlighting = response.getHighlighting();
    //判断是否有高亮数据，取出高亮数据
    Map<String, List<String>> listMap = highlighting.get(result.get("id"));
    if (listMap != null) {
        //高亮数据
        String hresult = listMap.get(filedName).get(0);
        //普通数据替换成高亮数据
        result.setField(filedName, hresult);
    }
}