@RestController
public class RequestController {
    //原始方式
    @RequestMapping("/simpleParam")
    public String simpleParam(HttpServletRequest request){
        // http://localhost:8080/simpleParam?name=Tom&age=10
        // 請(qǐng)求參數(shù)： name=Tom&age=10   （有2個(gè)請(qǐng)求參數(shù)）
        // 第1個(gè)請(qǐng)求參數(shù)： name=Tom   參數(shù)名:name，參數(shù)值:Tom
        // 第2個(gè)請(qǐng)求參數(shù)： age=10     參數(shù)名:age , 參數(shù)值:10

        String name = request.getParameter("name");//name就是請(qǐng)求參數(shù)名
        String ageStr = request.getParameter("age");//age就是請(qǐng)求參數(shù)名

        int age = Integer.parseInt(ageStr);//需要手動(dòng)進(jìn)行類型轉(zhuǎn)換
        System.out.println(name+"  :  "+age);
        return "OK";
    }
}

@RestController
public class RequestController {
        // http://localhost:8080/simpleParam?name=Tom&age=10
    // 第1個(gè)請(qǐng)求參數(shù)： name=Tom   參數(shù)名:name，參數(shù)值:Tom
    // 第2個(gè)請(qǐng)求參數(shù)： age=10     參數(shù)名:age , 參數(shù)值:10
    
    //springboot方式
    @RequestMapping("/simpleParam")
    public String simpleParam(String name , Integer age ){//形參名和請(qǐng)求參數(shù)名保持一致
        System.out.println(name+"  :  "+age);
        return "OK";
    }
}

@RestController
public class RequestController {
    // http://localhost:8080/simpleParam?name=Tom&age=20
    // 請(qǐng)求參數(shù)名：name

    //springboot方式
    @RequestMapping("/simpleParam")
    public String simpleParam(@RequestParam("name") String username , Integer age ){
        System.out.println(username+"  :  "+age);
        return "OK";
    }
}

@RequestMapping("/simpleParam")
public String simpleParam(@RequestParam(name = "name", required = false) String username, Integer age){
    System.out.println(username+ ":" + age);
    return "OK";
}

    @RequestMapping("/simpleParam")
    public String simpleParam(@RequestParam(name = "name", required = false,defaultValue ="匿名用戶") String userName, Integer age) {
        
//        打印輸出
        System.out.println(userName+"----"+age);
        return "ok";
    }

@RestController
public class RequestController {
    // http://localhost:8080/simpleParam?name=Tom&age=20
    
    //實(shí)體參數(shù)：簡單實(shí)體對(duì)象  User有兩個(gè)屬性,一個(gè)是name 一個(gè)是age,這樣Spring就會(huì)自動(dòng)完成賦值
    @RequestMapping("/simplePojo")
    public String simplePojo(User user){
        System.out.println(user);
        return "OK";
    }
}

public class User {
    private String name;
    private Integer age;
    private Address address; //地址對(duì)象
    .....
}


public class Address {
    private String province;
    private String city;
    .....
}

@RestController
public class RequestController {
    //實(shí)體參數(shù)：復(fù)雜實(shí)體對(duì)象
    @RequestMapping("/complexPojo")
    public String complexPojo(User user){
        System.out.println(user);
        return "OK";
    }
}

@RestController
public class RequestController {
    //數(shù)組集合參數(shù)
    @RequestMapping("/arrayParam")
    public String arrayParam(String[] hobby){
        System.out.println(Arrays.toString(hobby));
        return "OK";
    }
}

@RestController
public class RequestController {
    //數(shù)組集合參數(shù)
    @RequestMapping("/listParam")
    public String listParam(@RequestParam List<String> hobby){
        System.out.println(hobby);
        return "OK";
    }
}

@RestController
public class RequestController {
    //日期時(shí)間參數(shù)
   @RequestMapping("/dateParam")
    public String dateParam(@DateTimeFormat(pattern = "yyyy-MM-dd HH:mm:ss") LocalDateTime updateTime){
        System.out.println(updateTime);
        return "OK";
    }
}

public class User {
    private String name;
    private Integer age;
    private Address address;
    
    //省略GET , SET 方法
}  

@RestController
public class RequestController {
    //JSON參數(shù)
    @RequestMapping("/jsonParam")
    public String jsonParam(@RequestBody User user){
        System.out.println(user);
        return "OK";
    }
}

@RestController
public class RequestController {
    //路徑參數(shù)
    @RequestMapping("/path/{id}")
    public String pathParam(@PathVariable Integer id){
        System.out.println(id);
        return "OK";
    }
}

@RestController
public class RequestController {
    //路徑參數(shù)  前臺(tái)路徑  xxxx/path/12/jack
    @RequestMapping("/path/{id}/{name}")
    public String pathParam2(@PathVariable Integer id, @PathVariable String name){
        System.out.println(id+ " : " +name);
        return "OK";
    }
}

@RestController
public class ResponseController {
    //響應(yīng)字符串
    @RequestMapping("/hello")
    public String hello(){
        System.out.println("Hello World ~");
        return "Hello World ~";
    }
    //響應(yīng)實(shí)體對(duì)象
    @RequestMapping("/getAddr")
    public Address getAddr(){
        Address addr = new Address();//創(chuàng)建實(shí)體類對(duì)象
        addr.setProvince("廣東");
        addr.setCity("深圳");
        return addr;
    }
    //響應(yīng)集合數(shù)據(jù)
    @RequestMapping("/listAddr")
    public List<Address> listAddr(){
        List<Address> list = new ArrayList<>();//集合對(duì)象
        
        Address addr = new Address();
        addr.setProvince("廣東");
        addr.setCity("深圳");

        Address addr2 = new Address();
        addr2.setProvince("陜西");
        addr2.setCity("西安");

        list.add(addr);
        list.add(addr2);
        return list;
    }
}

public class Result {
    private Integer code;//響應(yīng)碼，1 代表成功; 0 代表失敗
    private String msg;  //響應(yīng)碼 描述字符串
    private Object data; //返回的數(shù)據(jù)

    public Result() { }
    public Result(Integer code, String msg, Object data) {
        this.code = code;
        this.msg = msg;
        this.data = data;
    }

    public Integer getCode() {
        return code;
    }

    public void setCode(Integer code) {
        this.code = code;
    }

    public String getMsg() {
        return msg;
    }

    public void setMsg(String msg) {
        this.msg = msg;
    }

    public Object getData() {
        return data;
    }

    public void setData(Object data) {
        this.data = data;
    }

    //增刪改 成功響應(yīng)(不需要給前端返回?cái)?shù)據(jù))
    public static Result success(){
        return new Result(1,"success",null);
    }
    //查詢 成功響應(yīng)(把查詢結(jié)果做為返回?cái)?shù)據(jù)響應(yīng)給前端)
    public static Result success(Object data){
        return new Result(1,"success",data);
    }
    //失敗響應(yīng)
    public static Result error(String msg){
        return new Result(0,msg,null);
    }
}

@RestController
public class ResponseController { 
    //響應(yīng)統(tǒng)一格式的結(jié)果
    @RequestMapping("/hello")
    public Result hello(){
        System.out.println("Hello World ~");
        //return new Result(1,"success","Hello World ~");
        return Result.success("Hello World ~");
    }

    //響應(yīng)統(tǒng)一格式的結(jié)果
    @RequestMapping("/getAddr")
    public Result getAddr(){
        Address addr = new Address();
        addr.setProvince("廣東");
        addr.setCity("深圳");
        return Result.success(addr);
    }

    //響應(yīng)統(tǒng)一格式的結(jié)果
    @RequestMapping("/listAddr")
    public Result listAddr(){
        List<Address> list = new ArrayList<>();

        Address addr = new Address();
        addr.setProvince("廣東");
        addr.setCity("深圳");

        Address addr2 = new Address();
        addr2.setProvince("陜西");
        addr2.setCity("西安");

        list.add(addr);
        list.add(addr2);
        return Result.success(list);
    }
}