http4client rest buik elasticsearch

maven

  <dependency>    <groupId>org.apache.httpcomponents</groupId>    <artifactId>httpclient</artifactId>    <version>4.5.2</version></dependency><dependency>    <groupId>org.apache.httpcomponents</groupId>    <artifactId>httpcore</artifactId>    <version>4.4</version></dependency><dependency>    <groupId>org.apache.httpcomponents</groupId>    <artifactId>httpmime</artifactId>    <version>4.4</version></dependency>

bulk 

 /**   * { "delete" : { "_index" : "test", "_type" : "type1", "_id" : "2" } }   * @return   */  private static String buildDelete(JSONObject json,String index,String type,String id){  StringBuffer sb = new StringBuffer();  String str="{ \"delete\" : { \"_index\" : \""+index+"\", \"_type\" : \""+type+"\", \"_id\" : \""+id+"\" } }";  sb.append(str).append("\n");  System.out.println("delete "+sb.toString());  return sb.toString();  }    /**   * { "update" : {"_id" : "1", "_type" : "type1", "_index" : "test"} }   * { "doc" : {"field2" : "value2"} }   * @return   */  private static String buildUpdate(JSONObject json,String index,String type,String id){  StringBuffer sb = new StringBuffer();  String str="{ \"update\" : { \"_index\" : \""+index+"\", \"_type\" : \""+type+"\", \"_id\" : \""+id+"\" } }";    sb.append(str).append("\n");  sb.append("{ \"doc\" : ").append(json).append("}").append("\n");    System.out.println("update: "+ sb.toString());return sb.toString();  }  private static String buildInsert(JSONObject json,String index,String type,String id){  StringBuffer sb = new StringBuffer();  String str="{ \"index\" : { \"_index\" : \""+index+"\", \"_type\" : \""+type+"\", \"_id\" : \""+id+"\" } }";  sb.append(str).append("\n");  sb.append(json).append("\n");  System.out.println("insert: "+sb.toString());return sb.toString();  }    public String postJson(String httpUrl, String json) {HttpPost httpPost = new HttpPost(httpUrl);// 创建httpPostStringEntity stringEntity = new StringEntity(json, "utf-8");// 解决中文乱码问题stringEntity.setContentEncoding("UTF-8");stringEntity.setContentType("application/json");httpPost.setEntity(stringEntity);return sendHttpPost(httpPost);}

 private String sendHttpPost(HttpPost httpPost) {        CloseableHttpClient httpClient = null;        CloseableHttpResponse response = null;        HttpEntity entity = null;        String responseContent = null;        try {            httpClient = HttpClients.createDefault();            response = httpClient.execute(httpPost);            entity = response.getEntity();            responseContent = EntityUtils.toString(entity, "UTF-8");        } catch (Exception e) {            e.printStackTrace();        } finally {            try {                if (response != null) {                    response.close();                }                if (httpClient != null) {                    httpClient.close();                }            } catch (IOException e) {                e.printStackTrace();            }        }        return responseContent;    }