SpringMVC中的常用注解和用法举例详解

@RequestMapping("/user")
@RestController
public class UserController {
    @RequestMapping("/sayHi")
    public String sayHi(){
        return "hello,Spring MVC";
    }
}

@RequestMapping("/user/m1")
@RestController
public class UserController {
    @RequestMapping("/say/hi")
    public String sayHi(){
        return "hello,Spring MVC";
    }
}

@Controller
public class MyController {
 
    @RequestMapping("/greet")
    public String greet(@RequestParam("name") String name) {
        // Method logic using name parameter
        return "greetPage";
    }
}

@Controller
public class MyController {
 
    @RequestMapping("/greet")
    public String greet(@RequestParam(value = "name2", required = false) String name) {
        // Method logic using name parameter
        return "greetPage";
    }
}

@Controller
@RequestMapping("/example")
public class ExampleController {

    @RequestMapping(value = "/addUser", method = RequestMethod.POST)
    @ResponseBody
    public String addUser(@RequestBody User user) {
        // 处理用户数据
        return "User added successfully!";
    }
}

@RequestMapping("/m8/{id}/{name}")
public String method8(@PathVariable Integer id, @PathVariable("name") String
userName){
    return "解析参数id:"+id+",name:"+userName;
}

@RestController
@RequestMapping("/example")
public class ExampleController {

    @RequestMapping(value = "/hello", method = RequestMethod.GET)
    public String hello() {
        return "Hello, World!";
    }
}

@Controller
public class MyController {
 
    @RequestMapping("/hello")
    public String hello() {
        return "hello.html";
    }
    //返回html页面
}

@Controller
public class MyController {
 
    @ResponseBody 
    @RequestMapping("/hello")
    public String hello() {
        return "hello";
    }
    //返回“hello”这个字符串
}

@RequestMapping("/getCookie")
public String cookie(@CookieValue("bite") String bite) {
    return "bite：" + bite;
}

@RequestMapping("/getSess2")
public String sess2(@SessionAttribute(value = "username",required = false)
String username) {
    return "username："+username;
}