1.创建数据库的连接,进行增删改查
(分别为接口和实现类)
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package com.dao; import java.util.List; 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.stereotype.Repository; import com.bean.Company; @Repository public class RepositoryImpl implements AbstractRepository { @Autowired private MongoTemplate mongoTemplate; // 查询所有数据 public List<?> findAll(Class<?> entity) { return mongoTemplate.findAll(entity); } // 更新数据 public Company findOne(String id, Class<?> entity) { return (Company) mongoTemplate.findOne( new Query(Criteria.where( "id" ) .is(id)), entity); } // 添加到数据库 public void updateEntity(Company company) { mongoTemplate.save(company); } // 删除选中的数据 public void delete(String id, Class<Company> class1) { Criteria criteria = Criteria.where( "id" ).in(id); if (criteria != null ) { Query query = new Query(criteria); if (query != null && mongoTemplate.findOne(query, class1) != null ) mongoTemplate.remove(mongoTemplate.findOne(query, class1)); } } //增加到数据库 public void insert(Company company) { mongoTemplate.insert(company); } } |
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package com.dao; import java.util.List; import com.bean.Company; public interface AbstractRepository { public List<?> findAll(Class<?> entity); public Company findOne(String id,Class<?> entity); public void updateEntity(Company company); public void delete(String id, Class<Company> class1); public void insert(Company company); } |
总结:与关系型数据库的连接一样,没有什么区别。
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原文链接:https://my.oschina.net/zhangzexing/blog/907223