MongoTemplate基本操作

本文基于spring boot项目，快速构建项目请参考：https://www.cnblogs.com/lay2017/p/8836273.html

添加mongo依赖

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

配置连接

有密码

spring.data.mongodb.uri=mongodb://name:password@localhost:27017/test

无密码

spring.data.mongodb.uri=mongodb://localhost:27017/test

代码示例

实体类

package cn.lay.mongo.entity;

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

/**
 * @author lay
 * @date 2018/09/13 14:53
 */
@Document(collection = "user_collection")
public class User {

    private Long id;

    private String name;

    private Integer age;

    public Long getId() {
        return id;
    }

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

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public Integer getAge() {
        return age;
    }

    public void setAge(Integer age) {
        this.age = age;
    }

    @Override
    public String toString() {
        return "User{" +
                "id=" + id +
                ", name='" + name + '\'' +
                ", age=" + age +
                '}';
    }
}

service类

package cn.lay.mongo.service;

import cn.lay.mongo.entity.User;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.mongodb.core.MongoTemplate;
import org.springframework.data.mongodb.core.query.Criteria;
import org.springframework.data.mongodb.core.query.Query;
import org.springframework.data.mongodb.core.query.Update;
import org.springframework.stereotype.Service;

import java.util.List;

/**
 * @author lay
 * @date 2018/09/13 14:54
 */
@Service
public class UserService {

    @Autowired
    private MongoTemplate mt;

    public void saveUser(User user) {
        mt.save(user);
    }

    public void removeUser(User user) {
        Query query = new Query(Criteria.where("id").is(user.getId()));
        mt.remove(query, User.class);
    }

    public void updateUser(User user) {
        Query query = new Query(Criteria.where("id").is(user.getId()));
        Update update = new Update().set("name", "gary");
        mt.updateMulti(query, update, User.class);
    }

    public User select(User user) {
        Query query = new Query(Criteria.where("id").is(user.getId()));
        User user1 = mt.findOne(query, User.class);
        return user1;
    }

    public List<User> selectAll() {
        List<User> users = mt.findAll(User.class);
        return users;
    }
}

controller

package cn.lay.mongo.controller;

import cn.lay.mongo.entity.User;
import cn.lay.mongo.service.UserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import java.util.List;

/**
 * @author lay
 * @date 2018/09/13 14:45
 */
@RestController
@RequestMapping("user")
public class UserController {

    @Autowired
    private UserService userService;

    @GetMapping("get")
    public User getUser() {
        User user = new User();
        user.setId(1L);
        return userService.select(user);
    }

    @GetMapping("save")
    public void saveUser() {
        User user = new User();
        user.setId(1L);
        user.setName("marry");
        user.setAge(24);
        userService.saveUser(user);
    }

    @GetMapping(value = "remove")
    public void removeUser() {
        User user = new User();
        user.setId(1L);
        user.setName("lay");
        user.setAge(24);
        userService.removeUser(user);
    }

    @GetMapping(value = "update")
    public void updateUser() {
        User user = new User();
        user.setId(1L);
        user.setName("lay");
        user.setAge(24);
        userService.updateUser(user);
    }

    @GetMapping("list")
    public List<User> listUser() {
        return userService.selectAll();
    }

}