1、在实体类MgUser.java中引入注解表明转换方式
@Data
//需要与mongo中对象(文档)名一致
public class MgUser {
@Id
private ObjectId _id; //插入mongo时会自动生成_id，如果不加这个字段则会把id属性当成_id
@Field
private Long id;
private String nikename;
private String phone;
/**
*提供set/get和toString方法
*/
}
2、配置MongoTemplate
在.xml中添加bean如下
3、将MongoTemplate注入DAO,并调用其相关方法进行CURD(创建（Create）、更新（Update）、读取（Read）和删除（Delete）)操作
public class TestMonoTemplate{
@Autowired
private MongoTemplate mongoTemplate;
@Test
public void testCURD(){
//测试增删改查操作(此处简化举例)
mongoTemplate.save();//添加
mongoTemplate.find(); //查询操作
mongoTemplate.findOne();//单个结果查询操作
mongoTemplate.updateFirst();//进行第一条符合要求的数据更新
mongoTemplate.updateMulti();//进行更新多行数据
mongoTemplate.remove();//进行数据删除
}
}
分页时查找数量：
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public
long
countSample(String id) {
Query query =
new
Query();
if
(StringUtil.hasText(id))
query.addCriteria(Criteria.where(
"creator"
).is(id));
return
mongoTemplate.count(query, Sample.
class
);
}
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分页：
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public
List
Query query =
new
Query();
query.with(
new
Sort(
new
Sort.Order(Sort.Direction.DESC,
"update_date"
)));
int
skip = (page.getCurrentPage() -
1
) * page.getPageSize();
if
(StringUtil.hasText(id)) {
Criteria criteria = Criteria.where(
"creator"
).is(id);
query.addCriteria(criteria);
}
query.skip(skip);
// 从那条记录开始
query.limit(page.getPageSize());
// 取多少条记录
return
mongoTemplate.find(query, Sample.
class
);
}
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修改数量：
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public
void
modifyHitNumByNo(String no) {
Query query =
new
Query();
query.addCriteria(Criteria.where(
"sap_no"
).is(no));
Update update =
new
Update();
update.inc(
"hit_num"
,
1
);
mongoTemplate.updateFirst(query, update, Project.
class
);
}
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模糊查询：
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public
List
Criteria criteria = Criteria.where(
"creator"
).is(memberId);
if
(StringUtil.hasText(selectVo.getName())) {
Pattern pattern = Pattern.compile(
"^.*"
+ selectVo.getName() +
".*$"
, Pattern.CASE_INSENSITIVE);
criteria.orOperator(Criteria.where(
"projectNo"
).regex(pattern), Criteria.where(
"name"
).regex(pattern));
}
return
findPageList(Query.query(criteria), Sample.
class
,
new
PageTag(selectVo.getPage(), selectVo.getPageSize()));
}
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一般查询：
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public
List
Query query =
new
Query();
if
(StringUtil.hasText(creator)) {
Criteria criteria = Criteria.where(
"creator"
).is(creator);
query.addCriteria(criteria);
}
return
mongoTemplate.find(query, Project.
class
);
}
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public
Experiment getExperimentByExpNo(String expNo) {
Query query =
new
Query();
Criteria criteria = Criteria.where(
"exp_no"
).is(expNo);
query.addCriteria(criteria);
return
mongoTemplate.findOne(query, Experiment.
class
);
}
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public
void
saveOrUpdateExperiment(Experiment experiment) {
if
(StringUtil.hasText(experiment.getExpNo())) {
Query query =
new
Query();
Criteria criteria = Criteria.where(
"exp_no"
).is(experiment.getExpNo());
query.addCriteria(criteria);
Experiment exp = mongoTemplate.findAndRemove(query, Experiment.
class
);
experiment.setCreator(exp.getCreator());
experiment.setCreateDate(exp.getCreateDate());
}
mongoTemplate.save(experiment);
}
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