ddsdjn 发表于 2017-12-19 15:05:19

利用java反射机制编写solr通用的java客户端

package com.urwork.tools.solr;  

  

import com.urwork.tools.page.Page;  

import org.apache.commons.collections.CollectionUtils;  

import org.apache.solr.client.solrj.SolrQuery;  

import org.apache.solr.client.solrj.impl.CloudSolrClient;  

import org.apache.solr.client.solrj.response.QueryResponse;  

import org.apache.solr.common.SolrDocument;  

import org.apache.solr.common.SolrDocumentList;  

import org.apache.solr.common.SolrInputDocument;  

  

import java.io.IOException;  

import java.lang.reflect.Field;  

import java.util.ArrayList;  

import java.util.List;  

  

/**  * Created by xxx on xxxx/xx/xx.
*/
  
public>  private CloudSolrClient server=null;
  

  /**
  * 构造函数
  * @param zkAddr      zk地址:192.168.2.233:2181,192.168.2.234:2181,192.168.2.235:2181
  * @param collection    collection名字: company
  */
  private SolrCloudClient(String zkAddr,String collection) {
  server = new CloudSolrClient.Builder().withZkHost(zkAddr).build();
  server.setDefaultCollection(collection);
  }
  

  /**
  * 删除集合中的所有数据
  * @throws Exception
  */
  public void deleteAll() throws Exception {
  server.deleteByQuery("*:*");
  server.commit();
  }
  

  /**
  * 根据id删除集合中的数据

  * @param>  * @throws Exception
  */

  public void deleteById(String>  server.deleteById(id);
  server.commit();
  }
  

  /**
  * 根据ids删除集合中的数据

  * @param>  * @throws Exception
  */

  public void deleteByIds(List<String>>  server.deleteById(ids);
  server.commit();
  }
  

  /**
  * 批量更新索引
  * @param docs
  * @param <T>
  * @throws Exception
  */
  public <T> void addList(List<T> docs) throws Exception {
  if (CollectionUtils.isEmpty(docs)){
  return;
  }
  List<SolrInputDocument> list = new ArrayList<>();
  for (T doc:docs){
  Field[] declaredFields = doc.getClass().getDeclaredFields();
  SolrInputDocument sid = new SolrInputDocument();
  for (Field field : declaredFields){
  field.setAccessible(true);
  String name = field.getName();
  Object value = field.get(doc);
  if (value!=null){
  sid.addField(name,value);
  }
  list.add(sid);
  }
  }
  

  server.add(list);
  server.commit();
  }
  

  /**
  * 添加单条索引
  * @param doc
  * @param <T>
  * @throws Exception
  */
  public <T> void add(T doc) throws Exception {
  List<T> docs = new ArrayList<>();
  docs.add(doc);
  addList(docs);
  }
  

  /**
  * 更新一条索引
  * @param doc
  * @param <T>
  * @throws Exception
  */
  public <T> void update(T doc)throws Exception{

  Field>  if (idField == null){

  throw new RuntimeException("your document doesn't have>  }
  idField.setAccessible(true);

  Object>  deleteById(id+"");
  add(doc);
  }
  

  /**
  * 批量更新索引
  * @param docs
  * @param <T>
  * @throws Exception
  */
  public <T> void updateList(List<T> docs) throws Exception {
  if (CollectionUtils.isEmpty(docs)){
  return;
  }

  List<String>>  for (T doc : docs){

  Field>  if (idField!=null){
  idField.setAccessible(true);

  Object>  ids.add(id+"");
  }
  }
  deleteByIds(ids);
  addList(docs);
  }
  

  /**
  * 执行查询
  * @param clazz      对应的class
  * @param page       Page分页
  * @param query      查询条件
  * @param <T>
  * @return
  * @throws Exception
  */
  public <T> Page<T> search(Class<T> clazz,Page<T> page, SolrQuery query) throws Exception {
  query.setStart((page.getCurrentPageNo()-1)*page.getPageSize());
  query.setRows(page.getPageSize());
  

  QueryResponse response = server.query(query);
  SolrDocumentList results = response.getResults();
  List<T> rtnList = new ArrayList<>();
  for (SolrDocument doc : results){
  T instance = clazz.newInstance();
  Field[] declaredFields = instance.getClass().getDeclaredFields();
  for (Field filed : declaredFields){
  filed.setAccessible(true);
  String name = filed.getName();
  Object fieldValue =doc.getFieldValue(name);
  filed.set(instance,fieldValue);
  }
  rtnList.add(instance);
  }
  page.setResult(rtnList);
  page.setTotalRecord((int)results.getNumFound());
  return page;
  }
  

  public void close() throws IOException {
  server.close();
  }
  

  
}
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