1. Import related Jar packages
<dependency> <groupId>org.apache.solr</groupId> <artifactId>solr-solrj</artifactId> <version>6.5.0</version> </dependency> <!-- Test code is used, no need to add --> <dependency> <groupId>com.alibaba</groupId> <artifactId>fastjson</artifactId> <version>1.2.12</version> </dependency>
2. Call Solr to search data
* Solr test class SolrTest.java
public class SolrTest {
private static Logger log = LogManager.getLogger();
public static void main(String[] args) throws Exception {
String solrUrl = "http://localhost:10001/solr/core_test";
HttpSolrClient client = new HttpSolrClient.Builder(solrUrl).build();
SolrQuery query = new SolrQuery();
query.set("wt", "json");
// Query string, the query name has James/Curry, and the age is 20 to 30 (inclusive) records
query.set("q", "name:(James Curry) AND age:[20 TO 30]");
// Which fields are included in the returned record, multiple separated by commas and spaces
query.set("fl", "id,name,age");
query.set("sort", "age ASC,name DESC");
// Filter query: age range 25～30
// query.set("fq", "age:[25 TO 30]");
// ***********Highlight setting start***********
// enable highlighting
query.set("hl", "true");
// highlight field
query.set("hl.fl", "name");
// Highlight format (front)
query.set("hl.simple.pre", "<span>");
// Highlight format (after)
query.set("hl.simple.post", "</span>");
// ***********Highlight setting end***********
// Paging, the returned data starts from the first record
query.setStart(0);
// Paginate, return the number of records
query.setRows(10);
//
QueryResponse response = client.query(query);
SolrDocumentList result = response.getResults();
//
List<Star> starList = response.getBeans(Star.class);
log.info("total：{},start:{},end:{}",result.getNumFound(),result.getStart(),result.getStart()+result.size());
log.info("----------List data----------");
for (Star star : starList) {
log.info(JSONObject.toJSONString(star));
}
log.info("----------Highlight----------");
Map<String, Map<String, List<String>>> hlMap = response.getHighlighting();
Iterator<Entry<String, Map<String, List<String>>>> hlIterator = hlMap.entrySet().iterator();
while(hlIterator.hasNext()){
Entry<String, Map<String, List<String>>> hlItem = hlIterator.next();
log.info("id->{},highlight->{}",hlItem.getKey(),hlItem.getValue());
}
}
}
* Solr search record corresponds to entity class Star.java
import org.apache.solr.client.solrj.beans.Field;
public class Star {
@Field("id")
private String id;
@Field("name")
private String name;
@Field("age")
private int age;
public String getId() {
return id;
}
public void setId(String id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public int getAge() {
return age;
}
public void setAge(int age) {
this.age = age;
}
}
search results:
2017-04-21 17:17:37.765 [main] INFO - total：2,start:0,end:2
cn.tinyf.demo.solr.SolrTest
2017-04-21 17:17:37.766 [main] INFO - ---------- list data ----------
cn.tinyf.demo.solr.SolrTest
2017-04-21 17:17:37.820 [main] INFO - {"age":27,"id":"66654e81-c1a9-4961-b782-5513f0928f2a","name":"James Harden"}
cn.tinyf.demo.solr.SolrTest
2017-04-21 17:17:37.820 [main] INFO - {"age":28,"id":"18f483cc-afda-4cc5-926e-5035bc427239","name":"Curry"}
cn.tinyf.demo.solr.SolrTest
2017-04-21 17:17:37.820 [main] INFO - ----------Highlight----------
cn.tinyf.demo.solr.SolrTest
2017-04-21 17:17:37.820 [main] INFO - id->66654e81-c1a9-4961-b782-5513f0928f2a,highlight->{name=[<span>James</span> Harden]}
cn.tinyf.demo.solr.SolrTest
2017-04-21 17:17:37.821 [main] INFO - id->18f483cc-afda-4cc5-926e-5035bc427239,highlight->{name=[<span>Curry</span>]}
cn.tinyf.demo.solr.SolrTest
3. Add & update documents (records)
The main methods for updating are (the back brackets indicate that there are overloaded methods with this parameter):
- addBean(Object [,int])
- add(SolrInputDocument [,int])
import org.apache.solr.client.solrj.impl.HttpSolrClient;
import cn.tinyf.demo.Utils;
public class SolrUpdateTest {
private static Scanner reader;
public static void main(String[] args) throws Exception {
String solrUrl = "http://localhost:10001/solr/core_test";
HttpSolrClient solrClient = null;
try {
// construct input
reader = new Scanner(System.in);
// create a new solr client
solrClient = new HttpSolrClient.Builder(solrUrl).build();
int menu = 0;
String line = null;
Star data;
while ((menu = selectMenu()) != 0) {
switch (menu) {
// add documentation
case 1:
System.out.println(">>>Add record<<<");
System.out.print("Please enter name: ");
line = reader.nextLine();
if (Utils.isEmpty(line)) {
break;
}
data = new Star();
data.setName(line);
System.out.print("Please enter age: ");
line = reader.nextLine();
if (Utils.isEmpty(line) || !line.trim().matches("\\d*")) {
break;
}
data.setAge(Integer.parseInt(line));
data.setId(Utils.uuid());
solrClient.addBean (date, 100);
System.out.println(">>>To do add next,id->" + line);
break;
// Revise
case 2:
System.out.println(">>>Modify record<<<");
System.out.print("Please enter the record ID: ");
line = reader.nextLine();
if (Utils.isNotEmpty(line)) {
solrClient.deleteById(line);
}
data = new Star();
data.setId(line);
System.out.print("Please enter name: ");
line = reader.nextLine();
if (Utils.isEmpty(line)) {
break;
}
data.setName(line);
System.out.print("Please enter age: ");
line = reader.nextLine();
if (Utils.isEmpty(line) || !line.trim().matches("\\d*")) {
break;
}
data.setAge(Integer.parseInt(line));
solrClient.addBean (date, 100);
System.out.println(">>>To do update next,id->" + line);
break;
// delete
case 3:
System.out.println(">>>delete record<<<");
System.out.print("Please enter the record ID: ");
line = reader.nextLine();
if (Utils.isNotEmpty(line)) {
solrClient.deleteById(line);
}
System.out.println(">>>To do delete next,id->" + line);
break;
// commit the changes immediately
case 4:
System.out.println(">>>Commit right now!");
solrClient.commit();
break;
default:
break;
}
}
} catch (Exception e) {
e.printStackTrace ();
} finally {
reader.close();
if (solrClient != null) {
solrClient.commit();
}
}
}
private static int selectMenu() {
do {
System.out.println("******Solr Menu******");
System.out.println("*1.Add record");
System.out.println("*2.Update record");
System.out.println("*3. Delete record");
System.out.println("*4. Commit changes");
System.out.println("*0.退出");
System.out.print("********************\nPlease select: ");
String line = reader.nextLine();
if (line.matches("\\s*[0-4]\\s*")) {
return Integer.parseInt(line);
} else {
System.out.println(">>>Select wrong(" + line + "), please reselect <<<");
}
} while (true);
}
}
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