springboot（java）操作mongodb创建工程-马育民老师

# 创建maven工程

略

# pom.xml 依赖

需要用到：
```
<dependency>
	<groupId>org.springframework.boot</groupId>
	<artifactId>spring-boot-starter-data-mongodb</artifactId>
	<version>2.2.0.RELEASE</version>
</dependency>
```

还需要junit用于测试：

```
<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-test</artifactId>
    <scope>test</scope>
    <exclusions>
        <exclusion>
            <groupId>org.junit.vintage</groupId>
            <artifactId>junit-vintage-engine</artifactId>
        </exclusion>
    </exclusions>
</dependency>
```

### 完整
```
<dependencyManagement>
    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-dependencies</artifactId>
            <version>2.2.2.RELEASE</version>
            <type>pom</type>
            <scope>import</scope>
        </dependency>
    </dependencies>
</dependencyManagement>
<dependencies>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-web</artifactId>
    </dependency>

<dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-data-mongodb</artifactId>
        <version>2.2.0.RELEASE</version>
    </dependency>

<dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-test</artifactId>
        <scope>test</scope>
        <exclusions>
            <exclusion>
                <groupId>org.junit.vintage</groupId>
                <artifactId>junit-vintage-engine</artifactId>
            </exclusion>
        </exclusions>
    </dependency>
</dependencies>
```

# application.properties

```
spring.data.mongodb.uri=mongodb://localhost:27017/blog
```

# 实体类

```
@Document(collection = "user")
public class User implements Serializable {
    @Id
    private String id;
    private String username;
    private String password;
    private String name;
    private String sex;
    private Integer age;

public String getId() {
        return id;
    }

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

public String getUsername() {
        return username;
    }

public void setUsername(String username) {
        this.username = username;
    }

public String getPassword() {
        return password;
    }

public void setPassword(String password) {
        this.password = password;
    }

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;
    }

public Integer getAge() {
        return age;
    }

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

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

# 主启动类

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

# junit

在 `/test/java` 下创建测试类：

```
@SpringBootTest
public class Test {

@Resource
    private MongoTemplate mt;

@org.junit.jupiter.api.Test
    public void add(){
        String uuid= UUID.randomUUID().toString().replace("-","");
        User user=new User();
        user.setId(uuid);
        user.setUsername("lucy");
        user.setPassword("123456");
        user.setName("lucy");
        user.setAge(20);
        user.setSex("女");
        mt.insert(user);
    }

```

原文出处：http://malaoshi.top/show_1IX1fPqX9Oje.html