@RequestMapping("/")
    public String toIndex(){
        return "index";
    }
    
    @RequestMapping("/")
    public String toIndex2(){
        return "index";
    }

@RequestMapping("/hello")
@Controller
public class TestRequestMapping {
    @RequestMapping("/target")
    public String toTarget(){
        return "target";
    }
}

    @RequestMapping({"/test1","/test2"})
    public String toTestValue(){
        return "testValue";
    }

<a th:href="@{/test1}" rel="external nofollow" >一個(gè)控制器方法匹配多個(gè)value測(cè)試1</a><br>
<a th:href="@{/test2}" rel="external nofollow" >一個(gè)控制器方法匹配多個(gè)value測(cè)試2</a><br>

@RequestMapping(value="/test3",method=RequestMethod.POST)
    public String toTestMethod(){
        return "testMethod";
    }

<a th:href="@{/test3}" rel="external nofollow" >method允許POST請(qǐng)求測(cè)試</a><br>
<form method="POST" th:action="@{/test3}">
    username<input name="username" type="text" /><br>
    <input type="submit" value="提交" /><br>
</form>
<form method="DELETE" th:action="@{/test3}">
    username<input name="username" type="text" /><br>
    <input type="submit" value="提交" /><br>
</form>

    /*這個(gè)注解表示請(qǐng)求參數(shù)要滿足如下要求
    1.要有username1，值任意
    2.不能有username2
    3.要有username3，且值為jack
    4.要有username4，且值不能為jack
    在寫鍵值對(duì)時(shí)，如果value為字符串類型，不需要使用單引號(hào)括起來(lái)，否則會(huì)出錯(cuò)
     */
    @RequestMapping(value="/test4",params={"username1","!username2","username3=jack","username4!=jack"})
    public String toTestParams(){
        return "testParams";
    }

<!--使用？可以連接請(qǐng)求參數(shù)，但是會(huì)標(biāo)紅，所以可以使用括號(hào)來(lái)表示請(qǐng)求參數(shù)-->
<a th:href="@{/test4(username3='jack',username4='asd')}" rel="external nofollow" >Params沒有username1測(cè)試</a><br>
<a th:href="@{/test4(username1='asd',username2='qw',username3='jack',username4='qew')}" rel="external nofollow" >Params有username2測(cè)試</a><br>
<a th:href="@{/test4(username1='dg',username3='asd',username4='oih')}" rel="external nofollow" >Params有username3但值不為jack測(cè)試</a><br>
<a th:href="@{/test4(username1='ih',username3='jack',username4='jack')}" rel="external nofollow" >Params有username4但值為jack測(cè)試</a><br>
<a th:href="@{/test4(username1='asd',username3='jack',username4='xcv')}" rel="external nofollow" >Params參數(shù)滿足條件測(cè)試</a><br>

    @RequestMapping(value="/test5",headers = {"Host=localhost:8080","Accept-Encoding!=gzip, deflate, br"})
    public String toTestHeaders(){
        return "testHeaders";
    }

<a th:href="@{/test5}" rel="external nofollow" >Headers不滿足Accept-Encoding條件</a><br>

    @RequestMapping(value="/test5",headers = {"Host=localhost:8080","Accept-Encoding=gzip, deflate, br"})
    public String toTestHeaders(){
        return "testHeaders";
    }

    //大括號(hào)表示占位符
    @RequestMapping("/test6/{id}/{username}")
    public String toTest(@PathVariable("id")Integer id,@PathVariable("username")String username){
        System.out.println("id = "+id+"  "+"username = "+username);
        return "test";
    }