MongoDB整合Springboot项目

原创

wx6316c4e40e2ec 2022-09-06 12:43:04 博主文章分类：数据库 ©著作权

文章标签 spring mongodb java 文章分类 OpenStack 云计算

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创建选择NoSQL

MongoDB整合Springboot项目_spring

pom依赖：

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

        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <optional>true</optional>
        </dependency>
        
        <!--Hutool Java工具包-->
        <dependency>
            <groupId>cn.hutool</groupId>
            <artifactId>hutool-all</artifactId>
            <version>4.5.7</version>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>

连接数据库
application.yml文件配置

#端口
server:
  port: 9090
  

spring:
 #连接mongodb数据库
  data:
    mongodb:
      uri: mongodb://logsuser:123456@192.168.230.136:27017/admin_logs?ext.auth.askPassword=true&authSource=admin_logs

#项目名称
  application:
    name:

开始创建实体类和dao层

Student 实体类

package com.jq.model;

import lombok.Data;
import org.springframework.data.annotation.Id;
import org.springframework.data.mongodb.core.mapping.Document;
import org.springframework.format.annotation.DateTimeFormat;

import java.util.Date;

@Data
@Document(collection ="student")//数据库表名 没有会自动创建
public class Student {
    @Id
    private String  id;
    private String name;
    private Integer sex ;
    private Integer age ;
    @DateTimeFormat(pattern = "yyyy-MM-dd HH:mm:ss")
    private Date birthday;
}

dao层

package com.jq.dao;

import com.jq.model.Student;
import org.springframework.data.mongodb.repository.MongoRepository;
import org.springframework.stereotype.Repository;
import org.springframework.web.bind.annotation.RequestBody;

@Repository
//<Student,String>  Student为实体类  String为实体类id的数据类型
public interface StudentDao extends MongoRepository<Student,String> {
}

开始测试

package com.jq;

import com.jq.dao.StudentDao;
import com.jq.model.Student;
import org.junit.jupiter.api.Test;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.data.mongodb.core.MongoTemplate;

import java.util.Date;

@SpringBootTest
class DemoApplicationTests {

    @Autowired
    private StudentDao studentDao;

    //新增
    @Test
    void insert() {
        Student student = new Student();
        student.setName("张三");
        student.setAge(20);
        student.setSex(1);
        student.setBirthday(new Date());
        studentDao.insert(student);
    }
}

数据库效果：

MongoDB整合Springboot项目_java_02

完整测试

package com.jq;

import cn.hutool.json.JSONUtil;
import com.fh.dao.StudentDao;
import com.jq.model.Student;
import com.jq.util.MongoUtil;
import com.jq.util.PageHelper;
import org.junit.jupiter.api.Test;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.data.domain.Sort;
import org.springframework.data.mongodb.core.MongoTemplate;
import org.springframework.data.mongodb.core.query.Criteria;
import org.springframework.data.mongodb.core.query.Query;

import java.util.Date;
import java.util.List;
import java.util.Optional;

@SpringBootTest
class DemoApplicationTests {

    @Autowired
    private StudentDao studentDao;

    @Autowired
    private MongoTemplate mongoTemplate;

    @Autowired
    private MongoUtil mongoUtil;

    //新增
    @Test
    void insert() {
        Student student = new Student();
        student.setName("张三");
        student.setAge(20);
        student.setSex(1);
        student.setBirthday(new Date());
        studentDao.insert(student);
    }

    //修改
    @Test
    void update(){
        Optional<Student> student = studentDao.findById("6093947d674e22145177f48d");
        Student student1 = student.get();
        student1.setName("王丽");
        student1.setSex(21);
        student1.setSex(2);
        studentDao.save(student1);
    }

    //删除
    @Test
    void delet(){
        studentDao.deleteById("6093947d674e22145177f48d");

    }

    //查询所有
    @Test
    void findAll(){
        List<Student> studentList = studentDao.findAll();
        System.out.println(JSONUtil.toJsonStr(studentList));
    }

    //查询所有+排序
    @Test
    void findAllAndSort(){
        Sort sort = Sort.by(Sort.Direction.DESC,"age");
        List<Student> studentList = studentDao.findAll(sort);
        System.out.println(JSONUtil.toJsonStr(studentList));
    }

    /**
     * 分页查询
     */
    @Test
    void findByPage() {
//        Query query = new Query(Criteria.where("students.name").is("name1").and("project").is("project1"));
        Query query = new Query(new Criteria());
//        query.with(Sort.by(Sort.Direction.DESC, "time"));
        mongoUtil.start(2, 2, query);
        List<Student> studentList = mongoTemplate.find(query, Student.class);
        long count = mongoTemplate.count(query, Student.class);
        PageHelper pageHelper = mongoUtil.pageHelper(count, studentList);
        System.out.println(pageHelper);
    }

}

工具类

package com.jq.util;
import lombok.Data;
import org.springframework.data.mongodb.core.query.Query;
import org.springframework.stereotype.Component;
import java.util.regex.Pattern;

import java.util.List;

@Data
@Component
public class MongoUtil <T>{

    public Integer pageSize;
    private Integer currentPage;


    public void start(Integer currentPage, Integer pageSize, Query query) {
        pageSize = pageSize == 0 ? 10 : pageSize;
        query.limit(pageSize);
        query.skip((currentPage - 1) * pageSize);
        this.pageSize = pageSize;
        this.currentPage = currentPage;
    }

    public PageHelper pageHelper(long total, List<T> list) {
        return new PageHelper(this.currentPage, total, this.pageSize, list);
    }

    public PageHelper pageHelper(List<T> list) {
        return new PageHelper(this.currentPage, this.pageSize, list);
    }

    public PageHelper pageHelper(long currentPage, long total, long pageSize, List<T> list) {
        return new PageHelper(currentPage, total, pageSize, list);
    }

    public PageHelper pageHelper(long currentPage, long pageSize, List<T> list) {
        return new PageHelper(currentPage, pageSize, list);
    }


    /**
     * 用于模糊查询忽略大小写
     *
     * @param string
     * @return
     */
    public Pattern getPattern(String string) {
        Pattern pattern = Pattern.compile("^.*" + string + ".*$", Pattern.CASE_INSENSITIVE);
        return pattern;
    }
}

分页工具类

package com.jq.util;

import lombok.Data;

import java.util.List;
@Data
public class PageHelper<T> {

    private long currentPage;
    private long total;
    private long pageSize;
    private List<T> list;

    public PageHelper(long pageNum, long total, long pageSize, List<T> list) {
        this.currentPage = pageNum;
        this.total = total;
        this.pageSize = pageSize;
        this.list = list;
    }

    public PageHelper(long pageNum, long pageSize, List<T> list) {
        this.currentPage = pageNum;
        this.pageSize = pageSize;
        this.list = list;
    }
}