如何在弹性搜索jdbc导入器中使用sql Like运算符

Question

我的项目中使用的技术（Spring mvc，elasticsearch，rest api），问题是，我的弹性搜索jdbc导入器无法像运算符一样运行sql，iam获取空数据，所以请任何人帮助我。< / p>

控制器

package com.technoshinelabs.ulearn.rest.controller;

import org.springframework.beans.factory.annotation.Autowired; import org.springframework.http.MediaType; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RequestMethod; import org.springframework.web.bind.annotation.RequestParam; import org.springframework.web.bind.annotation.RestController;

import com.technoshinelabs.ulearn.api.elasticsearch.repository.AutocompleteRepository; import com.technoshinelabs.ulearn.controller.BaseController; import com.technoshinelabs.ulearn.rest.entity.ResponseEntity; import com.technoshinelabs.ulearn.rest.util.RestStatus; import com.technoshinelabs.ulearn.util.ControllerUriConstant;

@RestController @RequestMapping(value = ControllerUriConstant.rest_autocomplete) public class RestAutocompleteController extends BaseController {

    @Autowired  AutocompleteRepository autoCompleteRepository;

    /**      *       * @param autoComplete   * @return   */     @RequestMapping(value = ControllerUriConstant.rest_autocompletesearch, method = RequestMethod.POST, produces = MediaType.APPLICATION_JSON_VALUE)    public ResponseEntity getOverLayWords(@RequestParam("q") String name) {         System.out.println("check search value" + " " + name);      return getResponseEntity(autoCompleteRepository.findByName(name), RestStatus.OK.getCode(), RestStatus.OK.getText());    } }

存储库

package com.technoshinelabs.ulearn.api.elasticsearch.repository;

import java.util.List;

import org.springframework.data.elasticsearch.repository.ElasticsearchRepository;

import com.technoshinelabs.ulearn.api.elasticsearch.entities.Autocomplete;

public interface AutocompleteRepository extends ElasticsearchRepository<Autocomplete, String>{

    public List<Autocomplete> findByName(String name); }

AutoComplete.bat

 @echo off

set DIR=%~dp0 set LIB=%DIR%..\lib\* set BIN=%DIR%..\bin

REM ??? echo {^
    "type" : "jdbc",^
    "jdbc" : {^
        "url" : "jdbc:mysql://localhost:3306/ulearn_app",^
        "user" : "root",^
        "password" : "root",^
        "sql" :  "Select id as _id, id, name from course where name like '%name%'",^
        "treat_binary_as_string" : true,^
        "elasticsearch" : {^    
             "cluster" : "elasticsearch",^
             "host" : "localhost",^
             "port" : 9300^
        },^
        "index" : "ind_autocomplete"^
      }^ }^ | "%JAVA_HOME%\bin\java" -cp "%LIB%" -Dlog4j.configurationFile="%BIN%\log4j2.xml" "org.xbib.tools.Runner" "org.xbib.tools.JDBCImporter"

Answer 1

至少有两种方法可以做到这一点。我使用第二个，因为我不需要在jdbc中使用'to'更改并将\'更改为'以在sql工具中测试查询。

1. 使用\' for each '

2. OR ..将查询作为视图存储在数据库中。然后使用\'

   调用视图而不是sql

   • 在您的数据库中：

     CREATE VIEW your_jdbc_view AS Select id as _id, id, name from course where name like '%name%';

   • 将elasticsearch文件中的行更改为：

     “sql”："Select * from your_jdbc_view",