SpringBoot (22): integrated mongodb

Add dependencies

Org.springframework.boot spring-boot-starter-data-mongodb

2. Configure application.properties

# # mongodb start # # spring.data.mongodb.host=localhostspring.data.mongodb.port=27017spring.data.mongodb.database=db_test##mongodb end # # #

Third, create entity classes

Package com.example.demo.pojo;import java.util.Date;/** * user Information * * @ Author: I love Dajin * @ Description: user Information * @ Date: Create in 14:09 2017-7-5 * / public class User {private int id; private String name; private Date createTime; public int getId () {return id;} public void setId (int id) {this.id = id } public String getName () {return name;} public void setName (String name) {this.name = name;} public Date getCreateTime () {return createTime;} public void setCreateTime (Date createTime) {this.createTime = createTime } @ Override public String toString () {return "User {" + "id=" + id + ", name='" + name +'\'+ ", createTime=" + createTime +'}';}}

Fourth, use MongoTemplate to implement

MongodbComponent.java

Package com.example.demo.utils.component;import com.example.demo.pojo.User;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.data.mongodb.core.MongoTemplate;import org.springframework.data.mongodb.core.query.Criteria;import org.springframework.data.mongodb.core.query.Query;import org.springframework.data.mongodb.core.query.Update;import org.springframework.stereotype.Component / * * Mongodb tool class * * @ Author: I love Dajin * @ Description: Mongodb tool class * @ Date: Create in 13:48 2017-7-5 * / @ Componentpublic class MongodbComponent {@ Autowired private MongoTemplate mongoTemplate; public void insert (User user) {mongoTemplate.insert (user);} public void deleteById (int id) {Criteria criteria = Criteria.where ("id") .in (id) Query query = new Query (criteria); mongoTemplate.remove (query, User.class);} public void updateById (User user) {Criteria criteria = Criteria.where ("id") .in (user.getId ()); Query query = new Query (criteria); Update update = new Update (); update.set ("name", user.getName ()); update.set ("createTime", user.getCreateTime ()) MongoTemplate.updateMulti (query, update, User.class);} public User selectById (int id) {Criteria criteria = Criteria.where ("id") .in (id); Query query = new Query (criteria); return mongoTemplate.findOne (query, User.class);}}

MongoTemplateTest.java (Test)

Package com.example.demo;import com.example.demo.pojo.User;import com.example.demo.utils.component.MongodbComponent;import org.junit.Test;import org.springframework.beans.factory.annotation.Autowired;import java.util.Date;/** * MongoTemplate Test * * @ Author: I love Dajin * @ Description: MongoTemplate Test * @ Date: Create in 13:54 2017-7-5 * / public class MongoTemplateTest extends ApplicationTests {@ Autowired private MongodbComponent mongodbComponent @ Test public void insert () {User user = new User (); user.setId (1); user.setName ("Zhang San"); user.setCreateTime (new Date ()); mongodbComponent.insert (user);} @ Test public void select () {System.out.println (mongodbComponent.selectById (1)) } @ Test public void update () {User user = new User (); user.setId (1); user.setName (Li Si); user.setCreateTime (new Date ()); mongodbComponent.updateById (user); System.out.println (mongodbComponent.selectById (1));} @ Test public void delete () {mongodbComponent.deleteById (1);}}

Use the interface to inherit MongoRepository

UserDao.java

Package com.example.demo.dao;import com.example.demo.pojo.User;import org.springframework.data.domain.Page;import org.springframework.data.domain.Pageable;import org.springframework.data.mongodb.repository.MongoRepository;import java.util.List / * * user dao * @ Author: I love Dajin * @ Description: user dao * @ Date: user dao * @ Date: 14:09 2017-7-5 * / public interface UserDao extends MongoRepository {/ * search by name * @ Author: I love Dajin * @ Description: search by name * @ Date: 14:12 2017-7-5 * @ param name name * @ return * / List findByName (String name) / * * Paging query by name * @ Author: I love Dajin * @ Description: paging query * @ Date: 14:15 2017-7-5 * @ param name name * @ param pageable paging parameter * @ return * / Page findByName (String name, Pageable pageable);}

Test: