测试方法:
com.kiis.mongodb_demo.mongo.User为实体类
分别根据条件向userOne与userTwo两个集合(表)插入数据
@Test
void testInsert(){
List<User> users1 = new ArrayList<>();
users1.add(new User("0001","kiis01","M"));
users1.add(new User("0002","kiis02","F"));
users1.add(new User("0003","kiis03","M"));
List<User> users2 = new ArrayList<>();
users2.add(new User("0004","kiis04","F"));
users2.add(new User("0005","kiis05","M"));
users2.add(new User("0006","kiis06","F"));
template.insert(users1,"userOne");
template.insert(users2,"userTwo");
List<User> usersOne = template.find(new Query(), User.class, "userOne");
System.out.println("==============usersOne===================");
for (User user:usersOne) {
System.out.println(user);
}
System.out.println();
List<User> usersTwo = template.find(new Query(), User.class, "userTwo");
System.out.println("==============userTwo===================");
for (User user:usersTwo) {
System.out.println(user);
}
}
程序输出结果:
==============usersOne===================
User{userId='0001', name='kiis01', sex='M'}
User{userId='0002', name='kiis02', sex='F'}
User{userId='0003', name='kiis03', sex='M'}
==============userTwo===================
User{userId='0004', name='kiis04', sex='F'}
User{userId='0005', name='kiis05', sex='M'}
User{userId='0006', name='kiis06', sex='F'}
数据库查询结果:
replica:PRIMARY> db.userOne.find();
{ "_id" : "0001", "name" : "kiis01", "sex" : "M", "_class" : "com.kiis.mongodb_demo.mongo.User" }
{ "_id" : "0002", "name" : "kiis02", "sex" : "F", "_class" : "com.kiis.mongodb_demo.mongo.User" }
{ "_id" : "0003", "name" : "kiis03", "sex" : "M", "_class" : "com.kiis.mongodb_demo.mongo.User" }
replica:PRIMARY> db.userTwo.find();
{ "_id" : "0004", "name" : "kiis04", "sex" : "F", "_class" : "com.kiis.mongodb_demo.mongo.User" }
{ "_id" : "0005", "name" : "kiis05", "sex" : "M", "_class" : "com.kiis.mongodb_demo.mongo.User" }
{ "_id" : "0006", "name" : "kiis06", "sex" : "F", "_class" : "com.kiis.mongodb_demo.mongo.User" }
实体类:
可以不设置Document,如果没有注解,代码也不设置,则默认为“user”
package com.kiis.mongodb_demo.mongo;
import org.springframework.data.annotation.Id;
import org.springframework.data.mongodb.core.mapping.Document;
/**
* @Description:
* @Author: caozz
* @Date: 2022/12/15 15:49
* @Version: v1.0
**/
@Document("user")
public class User {
@Id
private String userId;
private String name;
private String sex;
public User() {
}
public User(String userId, String name, String sex) {
this.userId = userId;
this.name = name;
this.sex = sex;
}
public String getUserId() {
return userId;
}
public void setUserId(String userId) {
this.userId = userId;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getSex() {
return sex;
}
public void setSex(String sex) {
this.sex = sex;
}
@Override
public String toString() {
return "User{" +
"userId='" + userId + '\'' +
", name='" + name + '\'' +
", sex='" + sex + '\'' +
'}';
}
}