springboot项目中后端接收前端传参的方法示例详解

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

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

@RestController
@RequestMapping("/store")
public class TestController {
}

/**
     * 第一种：java方法入参里面什么注解都没有
     * */
    @RequestMapping("/noAnnotation")
    public String noAnnotation(User user){
        return user.toString();
    }

/**
     * 第二种：不使用？&来拼接参数
     * */
    @RequestMapping("/havaPathVariable/{name}/{age}")
    public String havaPathVariable(@PathVariable(value = "name")String name, @PathVariable(value = "age")int age ){
        return name+age;
    }

/**
     * 第三种：@RequestBody
     * */
    @RequestMapping("/haveRequestBody")
    public String haveRequestBody(@RequestBody User user){
        return user.toString();
    }

public class Phone {
    private String name;
    private String code;
    public String getName() {
        return name;
    }
    public void setName(String name) {
        this.name = name;
    }
    public String getCode() {
        return code;
    }
    public void setCode(String code) {
        this.code = code;
    }
    @Override
    public String toString() {
        return "Phone{" +
                "name='" + name + '\'' +
                ", code='" + code + '\'' +
                '}';
    }
}

    @RequestMapping("/noAnnotation",method = {RequestMethod.GET})
    public String noAnnotation(User user){
        return user.toString();
    }

@GetMapping
@PostMapping
@PutMapping
@DeleteMapping
@PatchMapping

    @GetMapping("/noAnnotation")
    public String noAnnotation(User user){
        return user.toString();
    }