详解SpringBoot接收参数的五种形式

 @RequestMapping("/param/demo1")
 public void demo1(int id, String name){
 	System.out.println("获取到的参数是：");
 	System.out.println("id:" + id);
 	System.out.println("name:" + name);
 }
 

// 接收POST方式提交过来的数据
 @RequestMapping("/param/demo2")
 public void demo2(String gender, String name){
 	System.out.println("获取到的数据是：");
 	System.out.println("name = " + name);
 	System.out.println("gender = " + gender);
 }
 

 // 接收POST方式提交过来的数据
 @RequestMapping("/param/demo2")
 public void demo2(@RequestParam("xingbie") String gender, String name){
 	System.out.println("获取到的数据是：");
 	System.out.println("name = " + name);
 	System.out.println("gender = " + gender);
 }
 

 @Data
 public class People {
 	private String name;
 	private int age;
 	private String school;
 	private String gender;
 }

//如果同时提交过来一批数据(比如说10来个数据,我们要在形参中写上一堆参数吗?)
//如果同时提交过来的参数过多,我们可以考虑使用POJO方式接收
// Plain Old Java Object 
 @RequestMapping("/param/demo3") 
 public void demo3(People people){ 
    System.out.println("接收到的数据是："); 
    System.out.println(people); 
 }
 

@Data 
 public class Address { 
    private String sheng; 
    private String shi; 
    private String xian; 
 }

@Data
 public class Teacher { 
    private String name; 
    private int age; 
 	private Address address;
 }

//接收嵌套的参数
 @RequestMapping("/param/demo4")
 public void demo4(Teacher teacher){
 	 System.out.println("接收到的数据是：");
	 System.out.println(teacher);
 // 要获取所在的市
	 String shi = teacher.getAddress().getShi();
	 System.out.println("所在市：" + shi);
 }

 // 接收数组数据
@RequestMapping("/param/demo5")
public void demo5(String[] likes){
 	System.out.println("接收到的数据是：");
 	System.out.println(Arrays.toString(likes));
 }

@RequestMapping("/param/demo7")
public void demo7(@RequestParam List<String> likes){
 	System.out.println("接收到的数据是：");
    System.out.println(likes);
 }

{ 
 "name": "刘旭超", 
 "age": 36,  
 "likes": ["打游戏", "看电影"] 
 }

 [100, 200, 300]
 ["aaa", "bbb", "ccc"]

[ 
 { 
 	"name": "刘旭超",  
 	"age": 36 
 },  
 { 
 	"name": "刘二超",  
 	"age": 36 
 },  
 { 
 	"name": "刘小超",  
 	"age": 36 
 } 
]

 @Data
 public class People {
 	private String name;
 	private int age;
 	private String[] likes;
 }

@RequestMapping("/param/demo8")
 public void demo8(@RequestBody People people) {
 	System.out.println(people);
 }

// 使用数组接收
@RequestMapping("/param/demo9")
public void demo8(@RequestBody Integer[] numbers) {
	System.out.println(Arrays.toString(numbers));
}
// 使用列表集合接收
@RequestMapping("/param/demo9")
public void demo8(@RequestBody List<Integer> numbers) {
	System.out.println(numbers);
}

@Data
public class People {
	private String name;
	private int age;
}

@RequestMapping("/param/demo9")
public void demo8(@RequestBody List<People> peopleList) {
	System.out.println(peopleList);
}

@RequestMapping("/param/demo10")
public void demo10(String startDate,String endDate){
// 此时接收到参数以后，startDate和endDate就是一个单纯的字符串，假如我们想使用年、月、日的
//据的时候
// 我们得使用字符串的一些方法来分割或截取才能获取到对应的年、月、日数据
	String[] dateArray =
    startDate.split("/");
	String year = dateArray[0];
	int yearInt = Interger.parseInt(year);
// 以上操作是不方便的
}

@RequestMapping("/param/demo10")
public void demo10(@DateTimeFormat(pattern = "yyyy/MM/dd") Date startDate,
@DateTimeFormat(pattern = "yyyy-MM-dd") Date endDate){
	System.out.println(startDate.getMonth());
	System.out.println(endDate);
}

@RequestMapping("/param/demo10")
public void demo10(@DateTimeFormat(pattern = "yyyy/MM/dd") Date startDate,
@DateTimeFormat(pattern = "yyyy-MM-dd") Date endDate){
	System.out.println(startDate.getMonth());
	System.out.println(endDate);
}