实体参数的接受

• 简单实体对象：请求参数名与形参属性对象名相同，定义pojo接受即可，将数据封装到实体类中
• 实体类代码如下：

  • package com.example.POJO;
    
    public class User {
        private String name;
        private Integer age;
    
        public String getName() {
            return name;
        }
    
        public void setName(String name) {
            this.name = name;
        }
    
        public void setAge(Integer age) {
            this.age = age;
        }
    
        public Integer getAge() {
            return age;
        }
    
        @Override
        public String toString() {
            return "User{" +
                    "name='" + name + '\'' +
                    ", age=" + age +
                    '}';
        }
    
    }
    

• 控制类代码如下：
  •  

    package com.example.Controller;
    
    import com.example.POJO.User;
    import jakarta.servlet.http.HttpServletRequest;
    import org.springframework.web.bind.annotation.RequestMapping;
    import org.springframework.web.bind.annotation.RequestParam;
    import org.springframework.web.bind.annotation.RestController;
    
        // TODO 实体参数接受
        @RequestMapping("/simplePojo")
        public String simplePojo(User user) {
            System.out.println(user);
            return "OK";
        }
    }
    

•  postman中发送请求、idea接受并处理请求结果如下：
  • 
  • 

• 复杂实体参数接受 （一个实体类中包含另一个实体类作为对象，即对象的组合）

  • 参数的传递通过对象.属性=属性值的形式

    • 

• 实体类的代码如下：

  • User

    package com.example.POJO;
    
    public class User {
        // TODO 对象的组合（一个实体类成员变量是另一个实体类的对象）
        private Address address;
        private String name;
    
        public Address getAddress() {
            return address;
        }
    
        public void setAddress(Address address) {
            this.address = address;
        }
    
        private Integer age;
    
        public String getName() {
            return name;
        }
    
        public void setName(String name) {
            this.name = name;
        }
    
        public void setAge(Integer age) {
            this.age = age;
        }
    
        public Integer getAge() {
            return age;
        }
    
        @Override
        public String toString() {
            return "User{" +
                    "address=" + address +
                    ", name='" + name + '\'' +
                    ", age=" + age +
                    '}';
        }
    
    }
    

  • Address

    package com.example.POJO;
    
    public class Address {
        private String province;
        private String city;
    
        public String getProvince() {
            return province;
        }
    
        public void setProvince(String province) {
            this.province = province;
        }
    
        public String getCity() {
            return city;
        }
    
        public void setCity(String city) {
            this.city = city;
        }
    
        @Override
        public String toString() {
            return "Address{" +
                    "province='" + province + '\'' +
                    ", city='" + city + '\'' +
                    '}';
        }
    }
    

     
• 控制类代码如下：

  • package com.example.Controller;
    
    import com.example.POJO.User;
    import jakarta.servlet.http.HttpServletRequest;
    import org.springframework.web.bind.annotation.RequestMapping;
    import org.springframework.web.bind.annotation.RequestParam;
    import org.springframework.web.bind.annotation.RestController;
    
    @RestController
        // TODO 复杂参数接受
        @RequestMapping("/complexParam")
        public String complexParam(User user) {
            System.out.println(user);
            return "ok";
        }
    }
    

  • postman中发送请求、idea接受并处理请求结果如下:
    • 
    •