@Controller
@RequestMapping("/test")
public class RequestMappingController {

	//此時請求映射所映射的請求的請求路徑為：/test/testRequestMapping
    @RequestMapping("/testRequestMapping")
    public String testRequestMapping(){
        return "success";
    }

}

<a th:href="@{/testRequestMapping}" rel="external nofollow" >測試@RequestMapping的value屬性-->/testRequestMapping</a><br>
<a th:href="@{/test}" rel="external nofollow"  rel="external nofollow" >測試@RequestMapping的value屬性-->/test</a><br>

@RequestMapping(
        value = {"/testRequestMapping", "/test"}
)
public String testRequestMapping(){
    return "success";
}

<a th:href="@{/test}" rel="external nofollow"  rel="external nofollow" >測試@RequestMapping的value屬性-->/test</a><br>
<form th:action="@{/test}" method="post">
    <input type="submit">
</form>

@RequestMapping(
        value = {"/testRequestMapping", "/test"},
        method = {RequestMethod.GET, RequestMethod.POST}
)
public String testRequestMapping(){
    return "success";
}

<a th:href="@{/test(username='admin',password=123456)" rel="external nofollow" >測試@RequestMapping的params屬性-->/test</a><br>

@RequestMapping(
        value = {"/testRequestMapping", "/test"}
        ,method = {RequestMethod.GET, RequestMethod.POST}
        ,params = {"username","password!=123456"}
)
public String testRequestMapping(){
    return "success";
}

<a th:href="@{/testRest/1/admin}" rel="external nofollow" >測試路徑中的占位符-->/testRest</a><br>

@RequestMapping("/testRest/{id}/{username}")
public String testRest(@PathVariable("id") String id, @PathVariable("username") String username){
    System.out.println("id:"+id+",username:"+username);
    return "success";
}
//最終輸出的內容為-->id:1,username:admin

<a th:href="@{/testParam(username='admin',password=123456)}" rel="external nofollow" >測試獲取請求參數(shù)-->/testParam</a><br>

@RequestMapping("/testParam")
public String testParam(String username, String password){
    System.out.println("username:"+username+",password:"+password);
    return "success";
}

<form th:action="@{/testpojo}" method="post">
    用戶名：<input type="text" name="username"><br>
    密碼：<input type="password" name="password"><br>
    性別：<input type="radio" name="sex" value="男">男<input type="radio" name="sex" value="女">女<br>
    年齡：<input type="text" name="age"><br>
/.//    郵箱：<input type="text" name="email"><br>
    <input type="submit">
</form>

@RequestMapping("/testpojo")
public String testPOJO(User user){
    System.out.println(user);
    return "success";
}
//最終結果-->User{id=null, username='張三', password='123', age=23, sex='男', email='123@qq.com'}

@RequestMapping("/testServletAPI")
public String testServletAPI(HttpServletRequest request){
    request.setAttribute("testScope", "hello,servletAPI");
    return "success";
}

@RequestMapping("/testModelAndView")
public ModelAndView testModelAndView(){
    /**
     * ModelAndView有Model和View的功能
     * Model主要用于向請求域共享數(shù)據
     * View主要用于設置視圖，實現(xiàn)頁面跳轉
     */
    ModelAndView mav = new ModelAndView();
    //向請求域共享數(shù)據
    mav.addObject("testScope", "hello,ModelAndView");
    //設置視圖，實現(xiàn)頁面跳轉
    mav.setViewName("success");
    return mav;
}

@RequestMapping("/testModel")
public String testModel(Model model){
    model.addAttribute("testScope", "hello,Model");
    return "success";
}

@RequestMapping("/testMap")
public String testMap(Map<String, Object> map){
    map.put("testScope", "hello,Map");
    return "success";
}

@RequestMapping("/testModelMap")
public String testModelMap(ModelMap modelMap){
    modelMap.addAttribute("testScope", "hello,ModelMap");
    return "success";
}

public interface Model{}
public class ModelMap extends LinkedHashMap<String, Object> {}
public class ExtendedModelMap extends ModelMap implements Model {}
public class BindingAwareModelMap extends ExtendedModelMap {}

@RequestMapping("/testSession")
public String testSession(HttpSession session){
    session.setAttribute("testSessionScope", "hello,session");
    return "success";
}

@RequestMapping("/testApplication")
public String testApplication(HttpSession session){
	ServletContext application = session.getServletContext();
    application.setAttribute("testApplicationScope", "hello,application");
    return "success";
}

<form th:action="@{/testRequestBody}" method="post">
    用戶名：<input type="text" name="username"><br>
    密碼：<input type="password" name="password"><br>
    <input type="submit">
</form>

@RequestMapping("/testRequestBody")
public String testRequestBody(@RequestBody String requestBody){
    System.out.println("requestBody:"+requestBody);
    return "success";
}
/*輸出結果：
requestBody:username=admin&password=123456
*/

@RequestMapping("/testRequestEntity")
public String testRequestEntity(RequestEntity<String> requestEntity){
    System.out.println("requestHeader:"+requestEntity.getHeaders());
    System.out.println("requestBody:"+requestEntity.getBody());
    return "success";
}

requestHeader:[host:"localhost:8080", connection:"keep-alive", content-length:"27", cache-control:"max-age=0", sec-ch-ua:"" Not A;Brand";v="99", "Chromium";v="90", "Google Chrome";v="90"", sec-ch-ua-mobile:"?0", upgrade-insecure-requests:"1", origin:"http://localhost:8080", user-agent:"Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/90.0.4430.93 Safari/537.36"]
requestBody:username=admin&password=123

@RequestMapping("/testResponseBody")
@ResponseBody
public String testResponseBody(){
    return "success";
}