前几天学习了我ElasticSearch和SpringBoot整合的相关应用，这个项目我也是参考慕课网上视频学习的，大家如果有兴趣的话，也可以去看一下。链接我放这了。
Springboot + ElasticSearch 构建博客检索系统
实现的效果就是如下所示：
MySQL查询出来的结果
ElasticSearch查询出来的结果
image.png
1、开始准备
- 开发工具的的话，我这里使用的IDEA、MySql、ElasticSearch。
- 框架：
- SpringBoot
- MyBatisPlus
- 这里是使用Spring Boot搭建JSP页面，大家如果不会的话，可以去参考SpringBoot新建JSP页面
2、系统结构
系统结构.png
- 下面我将按照从上到下依次介绍里面的代码。
2.1config
@Configuration
@MapperScan("com.ols.test.online_learning_system.mapper.*")
public class MybatisPlusConfig {
/**
* 打印 sql
*/
@Bean
public PerformanceInterceptor performanceInterceptor() {
PerformanceInterceptor performanceInterceptor = new PerformanceInterceptor();
//格式化sql语句
Properties properties = new Properties();
properties.setProperty("format", "true");
performanceInterceptor.setProperties(properties);
return performanceInterceptor;
}
}
2.2 Controller
@RequestMapping("MySqlAndEsApi")
@Controller
public class MySqlAndEsController {
@Autowired
private CourseService courseService;
@Autowired
private EsCourseRepository esCourseRepository;
@GetMapping("/search")
@ResponseBody
public Map<String, Object> getCourseKeyWord(@RequestParam("keyword") String keyword, @RequestParam("type") String type) {
Map<String, Object> map = new HashMap<String, Object>();
StopWatch watch = new StopWatch();
watch.start();
if (type.equalsIgnoreCase("mysql")) {
//mysql
List<Course> list = courseService.getCourseList(keyword);
map.put("courseList", list);
} else if (type.equalsIgnoreCase("es")) {
//es
BoolQueryBuilder builder = QueryBuilders.boolQuery();
builder.should(QueryBuilders.matchPhraseQuery("courseName", keyword));
builder.should(QueryBuilders.matchPhraseQuery("courseIntroduce", keyword));
String s = builder.toString();
System.out.println(s);
Iterable<EsCourse> iterable = esCourseRepository.search(builder);
List<EsCourse> list = new ArrayList<>();
Iterator it = iterable.iterator();
while (it.hasNext()) {
list.add((EsCourse) it.next());
}
System.out.println(list);
map.put("courseList", list);
} else {
map.put("msg", "i don`t understand");
return map;
}
watch.stop();
long totalTimeMills = watch.getTotalTimeMillis();
map.put("duration", totalTimeMills);
return map;
}
@GetMapping("/toMysqlEs")
public String toMysqlEs(Model model) {
List<Course> list = courseService.getCourseList();
model.addAttribute("courseList", list);
return "mysql_es";
}
}
2.3 es
2.3.1 entity
@Data
@Document(indexName = "coursename",type = "course")
public class EsCourse {
@Id
private Integer courseId;
@Field(type = FieldType.Text)
private String courseName;
@Field(type = FieldType.Text)
private String coursePicture;
@Field(type = FieldType.Text)
private String courseVideo;
@Field(type = FieldType.Text)
private String coursePingfen;
@Field(type = FieldType.Long)
private Integer teacherId;
@Field(type = FieldType.Text)
private String courseIntroduce;
}
2.3.2 repository
public interface EsCourseRepository extends ElasticsearchRepository<EsCourse, Integer> {
}
2.4 mapper
@Mapper
public interface CourseMapper extends BaseMapper<Course> {
@Select("select * from course c where c.course_name like CONCAT('%',#{param},'%') or c.course_introduce like CONCAT('%',#{param},'%')")
List<Course> getCourseList(@Param("param") String param);
}
2.5 model
@Data
public class Course {
@TableId(value = "course_id",type = IdType.AUTO)
private Integer courseId;
private String courseName;
private String coursePicture;
private String courseVideo;
private String coursePingfen;
private Integer teacherId;
private String courseIntroduce;
}
2.6 service
public interface CourseService {
List<Course> getCourseList();
List<Course> getCourseList(@Param("param") String param);
}
2.7 serviceImpl
@Service
public class CourseServiceImpl implements CourseService {
@Autowired
private CourseMapper courseMapper;
@Override
public List<Course> getCourseList() {
EntityWrapper entityWrapper = new EntityWrapper();
return courseMapper.selectList(entityWrapper);
}
@Override
public List<Course> getCourseList(String param) {
return courseMapper.getCourseList(param);
}
}
2.8 OnlineLearningSystemApplication
@SpringBootApplication
@MapperScan("com.ols.test.online_learning_system.mapper")
public class OnlineLearningSystemApplication {
public static void main(String[] args) {
SpringApplication.run(OnlineLearningSystemApplication.class, args);
}
}
2.9 CoureMapper.xml
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd" >
<mapper namespace="com.ols.test.online_learning_system.mapper.CourseMapper" >
<resultMap id="BaseResultMap" type="com.ols.test.online_learning_system.model.Course" >
<id column="course_id" property="courseId" jdbcType="INTEGER" />
<result column="course_name" property="courseName" jdbcType="VARCHAR" />
<result column="course_picture" property="coursePicture" jdbcType="VARCHAR" />
<result column="course_video" property="courseVideo" jdbcType="VARCHAR" />
<result column="course_pingfen" property="coursePingfen" jdbcType="VARCHAR" />
<result column="teacher_id" property="teacherId" jdbcType="INTEGER" />
<result column="course_introduce" property="courseIntroduce" jdbcType="VARCHAR" />
</resultMap>
</mapper>
2.10 application.yml
spring:
mvc:
view:
prefix: /WEB-INF/views/
suffix: .jsp
datasource:
url: jdbc:mysql://127.0.0.1:3306/es?useUnicode=true&characterEncoding=UTF-8
username: root
password: hello@
type: com.alibaba.druid.pool.DruidDataSource
driver-class-name: com.mysql.jdbc.Driver
data:
elasticsearch:
cluster-name: elasticsearch
cluster-nodes: 127.0.0.1:9300
mybatis-plus:
mapper-locations: classpath:/mapping/*Mapper.xml
typeAliasesPackage: com.ols.test.online_learning_system.model
configuration:
map-underscore-to-camel-case: true
cache-enabled: true
lazyLoadingEnabled: true
multipleResultSetsEnabled: true
2.11 pom.xml
关键依赖
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<!--阿里巴巴连接池-->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid</artifactId>
<version>1.0.9</version>
</dependency>
<!--mysql-->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.47</version>
</dependency>
<!--Mybatis-plus-->
<dependency>
<groupId>com.baomidou</groupId>
<artifactId>mybatis-plus</artifactId>
<version>2.3</version>
</dependency>
<dependency>
<groupId>com.baomidou</groupId>
<artifactId>mybatis-plus-boot-starter</artifactId>
<version>2.3</version>
</dependency>
<!--lombok-->
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<version>1.16.20</version>
<scope>provided</scope>
</dependency>
<!--热部署-->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
<optional>true</optional> <!-- 这个需要为 true 热部署才有效 -->
</dependency>
<!--JSP配置-->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jstl</artifactId>
</dependency>
<!--tomcat的支持.-->
<dependency>
<groupId>org.apache.tomcat.embed</groupId>
<artifactId>tomcat-embed-jasper</artifactId>
<scope>provided</scope>
</dependency>
<!-- elasticsearch-->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-elasticsearch</artifactId>
</dependency>
3.0 测试
首页
页面1.png
mysql测试
es测试
image.png
终于写完了，忙个半死....
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