springboot系类代码：springboot-mongodb-org.springframework

• MongoDB已经在多个站点部署，其主要场景如下：
• 网站实时数据处理。它非常适合实时的插入、更新与查询，并具备网站实时数据存储所需的复制及高度伸缩性。
• 缓存。由于性能很高，它适合作为信息基础设施的缓存层。在系统重启之后，由它搭建的持久化缓存层可以避免下层的数据源过载。
• 高伸缩性的场景。非常适合由数十或数百台服务器组成的数据库，它的路线图中已经包含对MapReduce引擎的内置支持。
• 不适用的场景如下：
• 要求高度事务性的系统。
• 传统的商业智能应用。
• 复杂的跨文档（表）级联查询。

package com.programb.pos;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

@SpringBootApplication
public class Application {
    public static void main(String[] args) {
        SpringApplication.run(Application.class, args);
    }

}

package com.programb.pos.dao.entity;

import org.springframework.data.annotation.Id;
import org.springframework.data.mongodb.core.mapping.Document;


@Document(collection = "customer")
public class Customer {
    @Id
    private String id;
    private String firstName;
    private String lastName;

    public Customer() {
    }

    public Customer(String firstName, String lastName) {
        this.firstName = firstName;
        this.lastName = lastName;
    }

    public String getId() {
        return id;
    }

    public void setId(String id) {
        this.id = id;
    }

    public String getFirstName() {
        return firstName;
    }

    public void setFirstName(String firstName) {
        this.firstName = firstName;
    }

    public String getLastName() {
        return lastName;
    }

    public void setLastName(String lastName) {
        this.lastName = lastName;
    }

    @Override
    public String toString() {
        return String.format(
                "Customer[id=%s, firstName='%s', lastName='%s']",
                id, firstName, lastName);
    }
}

package com.programb.pos.dao.repository;

import org.springframework.data.mongodb.repository.MongoRepository;
import com.programb.pos.dao.entity.Customer;
import java.util.List;


public interface CustomerRepository extends MongoRepository<Customer, String> {

    Customer findByFirstName(String firstName);

    List<Customer> findByLastName(String lastName);

}

package com.programb.pos.service;

import org.springframework.stereotype.Service;
import com.programb.pos.dao.entity.Customer;
import com.programb.pos.dao.repository.CustomerRepository;
import javax.annotation.Resource;
import java.util.List;


@Service
public class CustomerService {
    @Resource
    private CustomerRepository repository;

    public void deleteAll() {
        repository.deleteAll();
    }

    public void save(Customer customer) {
        repository.save(customer);
    }

    public Iterable<Customer> findAll() {
        return repository.findAll();
    }

    public Customer findByFirstName(String firstName) {
        return repository.findByFirstName(firstName);
    }

    public List<Customer> findByLastName(String lastName) {
        return repository.findByLastName(lastName);
    }

}

spring:
  profiles:
    active: dev

---

spring:
  profiles: dev
  data:
    mongodb:
      uri: mongodb://programb:0000@localhost:1007/pro

logging:
  level:
    ROOT: INFO
    com:
      xncoding: DEBUG
  file: D:/programb/logs/app.log

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>com.programb</groupId>
    <artifactId>springboot-mongodb</artifactId>
    <version>1.0.0-SNAPSHOT</version>
    <packaging>jar</packaging>

    <name>springboot-mongodb</name>
    <description>MongoDB</description>

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.0.4.RELEASE</version>
    </parent>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
        <java.version>1.8</java.version>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-mongodb</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>org.hamcrest</groupId>
            <artifactId>hamcrest-all</artifactId>
            <version>1.3</version>
            <scope>test</scope>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>3.6.1</version>
                <configuration>
                    <!--<proc>none</proc>-->
                    <source>1.8</source>
                    <target>1.8</target>
                </configuration>
            </plugin>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-surefire-plugin</artifactId>
                <version>2.20</version>
                <configuration>
                    <skip>true</skip>
                </configuration>
            </plugin>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
                <executions>
                </executions>
            </plugin>
        </plugins>

        <resources>
            <resource>
                <directory>src/main/resources</directory>
            </resource>
            <resource>
                <directory>src/main/java</directory>
                <includes>
                    <include>**/*.xml</include>
                </includes>
            </resource>
        </resources>
    </build>

</project>