《 mongodb 学习 》java 基本操作 增删改，分页模糊精准查询

配置

spring:
    data:
        mongodb:
            uri: mongodb://localhost:27017
            database: oreal·

实体类

@Document(collection = "tes_namespace")
public class Namespace {

    @Id
    private String id;
    
    //@Field("name")
    private String name;
 
    //@Field("code")
    private String code;
 
    //@Field("description")
    private String description;

自定义主键ID

没有添加 @Field 也会生成

一、添加

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@ApiOperation(value = "添加")
    @GetMapping(value = "/add/{id}")
    public LYResultVO add(@PathVariable("id") String id) throws URISyntaxException {
        
        return namespaceService.add(id);
    }



    @Autowired
    public MongoTemplate mongoTemplate;    

    public LYResultVO add(String id) {
        
        Namespace ns = new Namespace();
        ns.setCode("code" + id);
        ns.setDescription("desc" + id);
        ns.setName("name"+ id);
        ns.setId(id);
        ns.setCreatTime(new Date());
        mongoTemplate.save(ns);
        return LYResultVO.successResultVO(ns.toString(),"success");
    }

二、删除

    @ApiOperation(value = "删除")
    @GetMapping(value = "/del/{id}")
    public LYResultVO del(@PathVariable("id") String id) throws URISyntaxException {
        
        return namespaceService.del(id);
    }

    public LYResultVO del(String id) {
        Query query=new Query(Criteria.where("id").is(id));
        mongoTemplate.remove(query,Namespace.class);
        return LYResultVO.successResultVO("", "删除成功");
    }

三、精准查询

    @ApiOperation(value = "精准查询")
    @GetMapping(value = "/get/{id}")
    public LYResultVO get(@PathVariable("id") String id) throws URISyntaxException {
        
        return namespaceService.queryNamespaceById(id);
    }


    public LYResultVO queryNamespaceById(String id) {
        Query query = new Query();
        query.addCriteria(Criteria.where("id").is(id));
        Namespace namespace = mongoTemplate.findOne(query,Namespace.class);
        return LYResultVO.successResultVO(namespace, "");
    }

四、模糊查询

    @ApiOperation(value = "模糊查询")
    @GetMapping(value = "/query/{name}")
    public LYResultVO query(@PathVariable("name") String name) throws URISyntaxException {
        return namespaceService.queryNamespace(name);
    }

    public LYResultVO queryNamespace(String name) {
        Query query = new Query();
        if(StringUtils.isNotEmpty(name)){

            query.addCriteria(Criteria.where("name").regex(Pattern.compile("^.*"+name+".*$", Pattern.CASE_INSENSITIVE)));
        }
        
        query.with(new Sort(new Sort.Order(Sort.Direction.DESC, "creatTime")));
        List<Namespace> list = mongoTemplate.find(query,Namespace.class);
        return LYResultVO.successResultVO(list,"success");
    }

五、分页

    @ApiOperation(value = "分页查询")
    @GetMapping(value = "/limitquery/{pageNo}")
    public LYResultVO query(@PathVariable("pageNo") int pageNo) throws URISyntaxException {

        return namespaceService.queryNamespaceBypage(pageNo);
    }

    public LYResultVO queryNamespaceBypage(int pageNo) {
        Query query = new Query();
        int limit =10;
        int skip = (pageNo - 1) * limit;
        query.skip(skip);// 从那条记录开始
        query.limit(limit);// 取多少条记录
        List<Namespace> list = mongoTemplate.find(query,Namespace.class);
        return LYResultVO.successResultVO(list,"success");
    }

六、日期判断

    @ApiOperation(value = "日期查询")
    @GetMapping(value = "/querydate")
    public LYResultVO querydate() throws URISyntaxException {
        
        return namespaceService.queryNamespaceByDate();
    }

    public LYResultVO queryNamespaceByDate() {
        Query query = new Query();

        query.addCriteria(Criteria.where("creatTime").lte(new Date()));
        List<Namespace> list = mongoTemplate.find(query,Namespace.class);
        return LYResultVO.successResultVO(list,"success");
    }