Springboot+MongoDB例子

一、環境

1、maven 3.3.9

2、eclipse

3、springboot 1.5.6

4、mongo 3.4.6 二、開發

1、建立一個springboot項目，引入1.5.6依賴。

2、項目結構如下

3、在pom中添加以下依賴

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

4、修改application.yml設定檔

spring:  data:    mongodb:      uri: mongodb://localhost:27017/boot_mongo  application:    name: mongowebserver:  port: 8888

5、編寫實體類User.java

package com.mongo.mongoweb.model;import java.io.Serializable;import org.springframework.data.annotation.Id;/** * user 實體類 *  * 作者： 段浩傑 2017年7月29日 */public class User implements Serializable {    /**     *      */    private static final long serialVersionUID = 1L;    // @id這個註解來對應mongo的_id這個欄位    @Id    private String _id;    private int id;    private String name;    private int age;    public User(String _id, int id, String name, int age) {        this._id = _id;        this.id = id;        this.name = name;        this.age = age;    }    public User(int id, String name, int age) {        this.id = id;        this.name = name;        this.age = age;    }    public int getId() {        return id;    }    public void setId(int id) {        this.id = id;    }    public String get_id() {        return _id;    }    public void set_id(String _id) {        this._id = _id;    }    public String getName() {        return name;    }    public void setName(String name) {        this.name = name;    }    public User() {        super();    }    public int getAge() {        return age;    }    public void setAge(int age) {        this.age = age;    }    public String toString() {        return "User [_id=" + _id + ", id=" + id + ", name=" + name + ", age=" + age + "]";    }}

6、編寫UserDao

package com.mongo.mongoweb.dao;import java.util.List;import org.springframework.data.domain.Pageable;import com.mongo.mongoweb.model.User;/** * userDao介面定義 *  * 作者： 段浩傑 2017年7月30日 */public interface UserDao {    List<User> findAll();    User getUser(Integer id);    void update(User user);    void insert(User user);    void insertAll(List<User> users);    void remove(Integer id);    List<User> findByPage(User user, Pageable pageable);}

7、編寫UserDaoImpl

package com.mongo.mongoweb.daoimpl;import java.util.List;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.data.domain.Pageable;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.Repository;import com.mongo.mongoweb.dao.UserDao;import com.mongo.mongoweb.model.User;/** * 介面實現 *  * 作者： 段浩傑 2017年7月30日 */@Repository("userDao")public class UserDaoImpl implements UserDao {    /**     * 由springboot自動注入，預設配置會產生mongoTemplate這個bean     */    @Autowired    private MongoTemplate mongoTemplate;    /**     * 尋找全部     */    @Override    public List<User> findAll() {        return mongoTemplate.findAll(User.class);    }    /**     * 根據id得到對象     */    @Override    public User getUser(Integer id) {        return mongoTemplate.findOne(new Query(Criteria.where("id").is(id)), User.class);    }    /**     * 插入一個使用者     */    @Override    public void insert(User user) {        mongoTemplate.insert(user);    }    /**     * 根據id刪除一個使用者     */    @Override    public void remove(Integer id) {        Criteria criteria = Criteria.where("id").is(id);          Query query = new Query(criteria);        mongoTemplate.remove(query,User.class);    }    /**     * 分頁尋找     *      * user代表過濾條件     *      * pageable代表分頁bean     */    @Override    public List<User> findByPage(User user, Pageable pageable) {        Query query = new Query();        if (user != null && user.getName() != null) {            //模糊查詢            query = new Query(Criteria.where("name").regex("^" + user.getName()));        }        List<User> list = mongoTemplate.find(query.with(pageable), User.class);        return list;    }    /**     * 根據id更新     */    @Override    public void update(User user) {        Criteria criteria = Criteria.where("id").is(user.getId());        Query query = new Query(criteria);        Update update = Update.update("name", user.getName()).set("age", user.getAge());        mongoTemplate.updateMulti(query, update, User.class);    }    /**     * 插入一個集合     */    @Override    public void insertAll(List<User> users) {        mongoTemplate.insertAll(users);    }}

8、編寫UserService

package com.mongo.mongoweb.service;import java.util.List;import org.springframework.data.domain.Pageable;import com.mongo.mongoweb.model.User;public interface UserService {    List<User> findAll();    User getUser(Integer id);    void update(User user);    void insert(User user);    void insertAll(List<User> users);    void remove(Integer id);    List<User> findByPage(User user,Pageable pageable);}

9、編寫UserServiceImpl

package com.mongo.mongoweb.serviceimpl;import java.util.List;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.data.domain.Pageable;import org.springframework.stereotype.Service;import com.mongo.mongoweb.dao.UserDao;import com.mongo.mongoweb.model.User;import com.mongo.mongoweb.service.UserService;@Service("userService")public class UserServiceImpl implements UserService{    @Autowired    private UserDao userDao;    @Override    public List<User> findAll() {        return userDao.findAll();    }    @Override    public User getUser(Integer id) {        return userDao.getUser(id);    }    @Override    public void update(User user) {        userDao.update(user);    }    @Override    public void insert(User user) {        userDao.insert(user);    }    @Override    public void insertAll(List<User> users) {        userDao.insertAll(users);    }    @Override    public void remove(Integer id) {        userDao.remove(id);    }    @Override    public List<User> findByPage(User user, Pageable pageable) {        return userDao.findByPage(user, pageable);    }}

10、編寫UserController控制器

package com.mongo.mongoweb.controller;import java.util.ArrayList;import java.util.List;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.data.domain.PageRequest;import org.springframework.data.domain.Pageable;import org.springframework.web.bind.annotation.PathVariable;import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.bind.annotation.RestController;import com.mongo.mongoweb.model.User;import com.mongo.mongoweb.service.UserService;/** * user控制器 *  * 作者： 段浩傑 2017年7月30日 */@RestController@RequestMapping("/user")public class UserController {    @Autowired    private UserService userService;    @RequestMapping("/get/{id}")    public User getUser(@PathVariable int id) {        return userService.getUser(id);    }    @RequestMapping("/delete/{id}")    public String delete(@PathVariable int id) {        userService.remove(id);        return "delete sucess";    }    @RequestMapping("/add")    public String insert() {        User user =new User(16, ""+16, 16);        userService.insert(user);        return "sucess";    }    @RequestMapping("/insert")    public String insertAll() {        List<User> list = new ArrayList<>();        for (int i = 10; i < 15; i++) {            list.add(new User(i, "" + i, i));        }        userService.insertAll(list);        return "sucess";    }    @RequestMapping("/find/all")    public List<User> find(){        return userService.findAll();    }    @RequestMapping("/find/{start}")    public List<User> findByPage(@PathVariable int start,User user){        Pageable pageable=new PageRequest(start, 2);        return userService.findByPage(user, pageable);    }     @RequestMapping("/update/{id}")    public String update(@PathVariable int id){        User user =new User(id, ""+1, 1);        userService.update(user);        return "sucess";    }}

11、然後啟動運行即可 ，源碼地址：

https://git.oschina.net/lgr123/springbootMongoDB.git