关于jeecg-boot:JeecgBoot与MongoDB集成实战文档

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坐标引入依赖

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-data-mongodb</artifactId>
</dependency>

降级积木报表
jeecgboot2.4.6/3.0 等版本集成 mongodb 会报 mongoTemplate 谬误，官网曾经提供了解决方案，将积木报表降级到最新版即可。

<dependency>
    <groupId>org.jeecgframework.jimureport</groupId>
    <artifactId>jimureport-spring-boot-starter</artifactId>
    <version>1.4.2</version>
</dependency>

之后在 application-dev.yml 文件中，退出 mongoDb 的配置项

spring:
  data:
    mongodb:
      uri: mongodb://localhost:27017/springboot-db

创立实体类

package org.jeecg.modules.mongodb.entity;

import org.springframework.data.annotation.Id;
 
public class Customer {
 
    @Id
    public String id;
 
    public String firstName;
    public String lastName;
 
    public Customer() {}
 
    public Customer(String firstName, String lastName) {
        this.firstName = firstName;
        this.lastName = lastName;
    }
 
    @Override
    public String toString() {
        return String.format("Customer[id=%s, firstName='%s', lastName='%s']",
                id, firstName, lastName);
    }
 
}

创立 Repository

package org.jeecg.modules.mongodb.dao;
 
import org.jeecg.modules.mongodb.entity.Customer;
import org.springframework.data.mongodb.repository.MongoRepository;
 
import java.util.List;
 
public interface CustomerRepository extends MongoRepository<Customer, String> {Customer findByFirstName(String firstName);
     List<Customer> findByLastName(String lastName);
 
}

测试用例
用两种形式测试 mongoDB，别离为 MongoRepository 和 MongoTemplate

package org.jeecg.modules.mongodb;
 
import org.jeecg.common.api.vo.Result;
import org.jeecg.modules.mongodb.dao.CustomerRepository;
import org.jeecg.modules.mongodb.entity.Customer;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.mongodb.core.MongoTemplate;
import org.springframework.web.bind.annotation.*;
 
import java.util.HashMap;
import java.util.Map;
 
 
/**
 * 测试 mongodb
 */
@RestController
@RequestMapping("/mongo")
public class MongoController {
 
    @Autowired
    private MongoTemplate mongoTemplate;
    @Autowired
    private CustomerRepository repository;
 
    @GetMapping("/test1")
    public Result<?> TestMongoDb(){Map<String,String> map = new HashMap<>();
        map.put("jeecg","mongodb-jeecg");
        mongoTemplate.insert(map, "testMongoDb");
 
        return Result.OK("存入胜利");
    }
 
    @GetMapping("/test2")
    public Result<?> TestMongoDb2(){repository.deleteAll();
 
        // save a couple of customers
        repository.save(new Customer("Alice", "Smith"));
        repository.save(new Customer("Bob", "Smith"));
 
        // fetch all customers
        System.out.println("Customers found with findAll():");
        System.out.println("-------------------------------");
        for (Customer customer : repository.findAll()) {System.out.println(customer);
        }
        System.out.println();
 
        // fetch an individual customer
        System.out.println("Customer found with findByFirstName('Alice'):");
        System.out.println("--------------------------------");
        System.out.println(repository.findByFirstName("Alice"));
 
        System.out.println("Customers found with findByLastName('Smith'):");
        System.out.println("--------------------------------");
        for (Customer customer : repository.findByLastName("Smith")) {System.out.println(customer);
        }
 
        return Result.OK("存入胜利");
    }
 
}