spring boot mongodb query

Spring Boot is a further encapsulation of spring, designed to simplify the installation and configuration of spring. We know that using spring to build a project environment often involves referencing many jar packages and creating a lot of XML files as the business becomes

, adhere to the principle of diversification, choose a better and more economical way, rather than top-down unification. More commonly, we can directly use MongoDB to store key value pairs of data types, such as: Verification Code, session, etc. due to MongoDB's scale-out capability, it can also be used to store data that is very large in the future, such as: logs, comments, etc. Because MongoDB stores the

MongoDB is used in the Spring boot project, and when MongoDB is not manipulated for a while, the next time you manipulate MongoDB there will be an exception. Exceptions are as follows: org.springframework.data.mongodb.UncategorizedMongoDbException: Prematurely reached

Static voidMain (string[] args) {springapplication.run (application.class, args); } @Override Public voidRun (String ... args)throwsException {repository.deleteall (); //save a couple of customersRepository.save (NewCustomer ("Alice", "Smith")); Repository.save (NewCustomer ("Bob", "Smith")); //Fetch All CustomersSystem.out.println ("Customers found with FindAll ():"); System.out.println ("-------------------------------"); for(Customer customer:repository.findAll ()) {System.out.println (cust

Tags:%s inter 14. ATI PAT Test Boot ABC System1. functionUse spring to link mongodb, and make additional deletions and checks2. Class structure diagram3. ImplementCode structure Entity #userentity Packagecom.jihite.entity; Public classuserentity {Private intID; PrivateString name; PrivateString passwd; Public intgetId () {returnID; } Public voidSetId (i

Tags: support org BSP EPO nbsp End Boot class configuration file1. Add Maven Dependency Dependency > groupId >org.springframework.bootgroupId> Artifactid>spring-boot-starter-data-mongodbartifactid> dependency> 2. Configuring MongoDB Access Parameters in the application.properties configuration file spring.data

Using the @repository interface provided by Springboot, you can accomplish the custom work that once required a lot of code writing and configuration files. These configurations, which previously gave novice programmers a headache and were proud of an experienced programmer, have become less important due to the continuous improvement of the framework and have also improved programmer productivity.This article describes how to manipulate MongoDB throu

,"cityname": "温岭","description": "温岭是个好城市"}}The following verify the implementation of the weighted sub-query Search interface: GET http://localhost:8080/api/city/search?pageNumber=0pageSize=10searchContent= wenlingThe data will appear[{"id": 1,"provinceid": 1,"cityname": "温岭","description": "温岭是个好城市"},{"id": 2,"provinceid": 2,"cityname": "温州","description": "温州是个热城市"}]From the background Console can be seen, print out the corresponding DSL statement:

As for the MongoDB web has a lot of relevant information, so there is not too much to introduce here, we are here mainly to introduce how to use MongoDB and spring boot combination. This section outlines: (1) Preparatory work; (2) Create a new MAVEN Java project; (3) to introduce relevant dependence; (4) write the test

Tags: mongodb spring data MongoDB SpringSpring Data MongoDB III: Basic document Queries (query, basicquery) (i) Learn MongoDB Six: MongoDB query