Java Mongo db不会更新现有文档

我正在使用JavaPOJO和SpringMongoTemplate，现在我花了几个小时试图理解为什么MongoDb不会更新现有文档 我可以插入文档，但不能更新现有文档 在mongo/spring中有没有简单的方法来跟踪这一点？ 到目前为止，我试过： 只需调用save：

        person.setUpdateDate(new Date());
        mongoTemplate.save(person);
        //not working

        DBCollection coll=mongoTemplate.getCollection("Person");
        DBObject mongoPerson = morphia.toDBObject(person);
        DBObject afterSave = coll.findAndModify(new BasicDBObject("id", person.getId()), mongoPerson);
        //afterSave is null

        DBObject afterSave = coll.findAndModify(new BasicDBObject("id", person.getId()), mongoPerson);
        //afterSave is null
        mongoTemplate.save(person);

        Query query = new Query();
        query.addCriteria(Criteria.where("_id").is(person.getId()));
        mongoTemplate.updateFirst(query, new Update().set("name",person.getName())
                                                     .set("desc", person.getDesc())
                                                      .set("updateDate",new Date())
                                                          , 
                                                        Person.class)

调用updateFirst

        mongoTemplate.updateFirst(new Query(Criteria.where("_id").is(person.getId())),
                                    Update.update("objName", "NotWorking"),Person.class);

        DBCollection coll=mongoTemplate.getCollection("Person");
        DBObject mongoPerson = morphia.toDBObject(person);
        DBObject afterSave = coll.findAndModify(new BasicDBObject("id", person.getId()), mongoPerson);
        //afterSave is null

        DBObject afterSave = coll.findAndModify(new BasicDBObject("id", person.getId()), mongoPerson);
        //afterSave is null
        mongoTemplate.save(person);

        Query query = new Query();
        query.addCriteria(Criteria.where("_id").is(person.getId()));
        mongoTemplate.updateFirst(query, new Update().set("name",person.getName())
                                                     .set("desc", person.getDesc())
                                                      .set("updateDate",new Date())
                                                          , 
                                                        Person.class)

首先获取集合，转换为DB对象， 然后查找并修改：

        DBCollection coll=mongoTemplate.getCollection("Person");
        DBObject mongoPerson = morphia.toDBObject(person);
        DBObject afterSave = coll.findAndModify(new BasicDBObject("id", person.getId()), mongoPerson);
        //afterSave is null

        DBObject afterSave = coll.findAndModify(new BasicDBObject("id", person.getId()), mongoPerson);
        //afterSave is null
        mongoTemplate.save(person);

        Query query = new Query();
        query.addCriteria(Criteria.where("_id").is(person.getId()));
        mongoTemplate.updateFirst(query, new Update().set("name",person.getName())
                                                     .set("desc", person.getDesc())
                                                      .set("updateDate",new Date())
                                                          , 
                                                        Person.class)

尝试按_id查找，然后保存：

        DBCollection coll=mongoTemplate.getCollection("Person");
        DBObject mongoPerson = morphia.toDBObject(person);
        DBObject afterSave = coll.findAndModify(new BasicDBObject("id", person.getId()), mongoPerson);
        //afterSave is null

        DBObject mongoPerson = morphia.toDBObject(person);
        Person found1 = mongoTemplate.findById(person.getId(), Person.class);
        found1.setObjName(person.getName());
        mongoTemplate.save(found1);

        DBObject afterSave = coll.findAndModify(new BasicDBObject("id", person.getId()), mongoPerson);
        //afterSave is null
        mongoTemplate.save(person);

        Query query = new Query();
        query.addCriteria(Criteria.where("_id").is(person.getId()));
        mongoTemplate.updateFirst(query, new Update().set("name",person.getName())
                                                     .set("desc", person.getDesc())
                                                      .set("updateDate",new Date())
                                                          , 
                                                        Person.class)

首先查找，然后使用_id保存：

        DBCollection coll=mongoTemplate.getCollection("Person");
        DBObject mongoPerson = morphia.toDBObject(person);
        DBObject afterSave = coll.findAndModify(new BasicDBObject("id", person.getId()), mongoPerson);
        //afterSave is null

        DBCursor found = coll.find(new BasicDBObject("_id", person.getId()));
        DBObject first = found.next();
        mongoTemplate.save(first);

        DBObject afterSave = coll.findAndModify(new BasicDBObject("id", person.getId()), mongoPerson);
        //afterSave is null
        mongoTemplate.save(person);

        Query query = new Query();
        query.addCriteria(Criteria.where("_id").is(person.getId()));
        mongoTemplate.updateFirst(query, new Update().set("name",person.getName())
                                                     .set("desc", person.getDesc())
                                                      .set("updateDate",new Date())
                                                          , 
                                                        Person.class)

先查找，然后使用id保存：

        DBCollection coll=mongoTemplate.getCollection("Person");
        DBObject mongoPerson = morphia.toDBObject(person);
        DBObject afterSave = coll.findAndModify(new BasicDBObject("id", person.getId()), mongoPerson);
        //afterSave is null

        DBCursor found = coll.find(new BasicDBObject("id", person.getId()));
        DBObject first = found.next();
        mongoTemplate.save(first);

        DBObject afterSave = coll.findAndModify(new BasicDBObject("id", person.getId()), mongoPerson);
        //afterSave is null
        mongoTemplate.save(person);

        Query query = new Query();
        query.addCriteria(Criteria.where("_id").is(person.getId()));
        mongoTemplate.updateFirst(query, new Update().set("name",person.getName())
                                                     .set("desc", person.getDesc())
                                                      .set("updateDate",new Date())
                                                          , 
                                                        Person.class)

尝试查找并修改，然后保存：

        DBCollection coll=mongoTemplate.getCollection("Person");
        DBObject mongoPerson = morphia.toDBObject(person);
        DBObject afterSave = coll.findAndModify(new BasicDBObject("id", person.getId()), mongoPerson);
        //afterSave is null

        DBObject afterSave = coll.findAndModify(new BasicDBObject("id", person.getId()), mongoPerson);
        //afterSave is null
        mongoTemplate.save(person);

        Query query = new Query();
        query.addCriteria(Criteria.where("_id").is(person.getId()));
        mongoTemplate.updateFirst(query, new Update().set("name",person.getName())
                                                     .set("desc", person.getDesc())
                                                      .set("updateDate",new Date())
                                                          , 
                                                        Person.class)

使用查询更新单个字段：

        DBCollection coll=mongoTemplate.getCollection("Person");
        DBObject mongoPerson = morphia.toDBObject(person);
        DBObject afterSave = coll.findAndModify(new BasicDBObject("id", person.getId()), mongoPerson);
        //afterSave is null

        DBObject afterSave = coll.findAndModify(new BasicDBObject("id", person.getId()), mongoPerson);
        //afterSave is null
        mongoTemplate.save(person);

        Query query = new Query();
        query.addCriteria(Criteria.where("_id").is(person.getId()));
        mongoTemplate.updateFirst(query, new Update().set("name",person.getName())
                                                     .set("desc", person.getDesc())
                                                      .set("updateDate",new Date())
                                                          , 
                                                        Person.class)

*更新 这也在起作用：

        DBCollection coll=mongoTemplate.getCollection("Person");
        DBObject mongoPerson = morphia.toDBObject(person);
        DBObject afterSave = coll.findAndModify(new BasicDBObject("id", person.getId()), mongoPerson);
        //afterSave is null

        DBObject afterSave = coll.findAndModify(new BasicDBObject("id", person.getId()), mongoPerson);
        //afterSave is null
        mongoTemplate.save(person);

        Query query = new Query();
        query.addCriteria(Criteria.where("_id").is(person.getId()));
        mongoTemplate.updateFirst(query, new Update().set("name",person.getName())
                                                     .set("desc", person.getDesc())
                                                      .set("updateDate",new Date())
                                                          , 
                                                        Person.class)

mongoOperations.save(person,"Person");

我能够使更新工作-不是我想要的方式，但…它的工作

        DBCollection coll=mongoTemplate.getCollection("Person");
        DBObject mongoPerson = morphia.toDBObject(person);
        DBObject afterSave = coll.findAndModify(new BasicDBObject("id", person.getId()), mongoPerson);
        //afterSave is null

        DBObject afterSave = coll.findAndModify(new BasicDBObject("id", person.getId()), mongoPerson);
        //afterSave is null
        mongoTemplate.save(person);

        Query query = new Query();
        query.addCriteria(Criteria.where("_id").is(person.getId()));
        mongoTemplate.updateFirst(query, new Update().set("name",person.getName())
                                                     .set("desc", person.getDesc())
                                                      .set("updateDate",new Date())
                                                          , 
                                                        Person.class)

import static org.springframework.data.mongodb.core.query.Criteria.where;  
import static org.springframework.data.mongodb.core.query.Query.query;  
import static org.springframework.data.mongodb.core.query.Update.update; 

@Controller
public class PersonController {

@Autowired
private MongoTemplate mongoTemplate;

@Autowired
MongoOperations  mongoOperations;

...

mongoOperations.updateFirst(query(where("_id").is(person.getId())), Update.update("name", newPersonName),"Person");  

现在还不确定为什么这会在

        DBCollection coll=mongoTemplate.getCollection("Person");
        DBObject mongoPerson = morphia.toDBObject(person);
        DBObject afterSave = coll.findAndModify(new BasicDBObject("id", person.getId()), mongoPerson);
        //afterSave is null

        DBObject afterSave = coll.findAndModify(new BasicDBObject("id", person.getId()), mongoPerson);
        //afterSave is null
        mongoTemplate.save(person);

        Query query = new Query();
        query.addCriteria(Criteria.where("_id").is(person.getId()));
        mongoTemplate.updateFirst(query, new Update().set("name",person.getName())
                                                     .set("desc", person.getDesc())
                                                      .set("updateDate",new Date())
                                                          , 
                                                        Person.class)

mongoOperations.save(person);

---

无法工作…

您需要在方法中添加db名称

        DBCollection coll=mongoTemplate.getCollection("Person");
        DBObject mongoPerson = morphia.toDBObject(person);
        DBObject afterSave = coll.findAndModify(new BasicDBObject("id", person.getId()), mongoPerson);
        //afterSave is null

        DBObject afterSave = coll.findAndModify(new BasicDBObject("id", person.getId()), mongoPerson);
        //afterSave is null
        mongoTemplate.save(person);

        Query query = new Query();
        query.addCriteria(Criteria.where("_id").is(person.getId()));
        mongoTemplate.updateFirst(query, new Update().set("name",person.getName())
                                                     .set("desc", person.getDesc())
                                                      .set("updateDate",new Date())
                                                          , 
                                                        Person.class)

例如：

        DBCollection coll=mongoTemplate.getCollection("Person");
        DBObject mongoPerson = morphia.toDBObject(person);
        DBObject afterSave = coll.findAndModify(new BasicDBObject("id", person.getId()), mongoPerson);
        //afterSave is null

        DBObject afterSave = coll.findAndModify(new BasicDBObject("id", person.getId()), mongoPerson);
        //afterSave is null
        mongoTemplate.save(person);

        Query query = new Query();
        query.addCriteria(Criteria.where("_id").is(person.getId()));
        mongoTemplate.updateFirst(query, new Update().set("name",person.getName())
                                                     .set("desc", person.getDesc())
                                                      .set("updateDate",new Date())
                                                          , 
                                                        Person.class)

如果您不这样做，mongo会将您的数据保存在数据库中，名称为userInfo，大写字母为“I”

---

.

您如何确定更新不起作用？他们正在进入服务器吗？它们看起来像什么？如果在mongod上将logging设置为1或verbose，则它将打印日志中尝试的每个操作，成功或失败。我不确定探查器与此有何关系，但getlasterror不是写入，而是写入后发送的命令。在日志中找到更新。您不必重新启动mongod-只需运行db.adminCommand{setParameter:1，logLevel:1}，当您想将其与logLevel:0设置为相同时，您使用的是什么版本？在该数据库db.person中运行常规查询。查找{u id:ObjectId'53b98c56ee7957044fc40667'}-似乎找不到匹配的文档。您在这里使用的是上述哪种方法？啊，不带第二个参数的save将尝试保存到要保存的对象的实体类型的集合。配置中的实体类型不是Person。实际上，您没有在任何地方显示person变量的声明-它的类型/类是什么？我仍然很好奇mongoOperations.saveperson为什么不起作用-我认为如果person的类型是person，那么它应该是等效的…如果您只传递person对象，哪里有犯错的地方？我在想可能是配置，或者可能是person不是类person-你展示了你的类定义，person的声明是什么样子的？也许把你所有的代码都放在一个要点中，并用一个指针指向它——要自信地调试代码片段真的很难。

        DBCollection coll=mongoTemplate.getCollection("Person");
        DBObject mongoPerson = morphia.toDBObject(person);
        DBObject afterSave = coll.findAndModify(new BasicDBObject("id", person.getId()), mongoPerson);
        //afterSave is null

        DBObject afterSave = coll.findAndModify(new BasicDBObject("id", person.getId()), mongoPerson);
        //afterSave is null
        mongoTemplate.save(person);

        Query query = new Query();
        query.addCriteria(Criteria.where("_id").is(person.getId()));
        mongoTemplate.updateFirst(query, new Update().set("name",person.getName())
                                                     .set("desc", person.getDesc())
                                                      .set("updateDate",new Date())
                                                          , 
                                                        Person.class)