Spring 全家桶之 Spring Web MVC （一）- MVC（三）

@RequestMapping(value = "/handle_post_req", method = RequestMethod.POST)
public String handlePostReq(){
    String method = Thread.currentThread().getStackTrace()[1].getMethodName();
    System.out.println(this.getClass().getSimpleName() + "类的" + method + "方法正在执行");
    return "success";
}
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<p>发送POST请求</p>
<form action="/mapping/handle_post_req" method="post">
  <button type="submit">发送POST请求</button>
</form>
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@RequestMapping(value = "/handle_params", params = {"username"})
public String handleParams(){
    String method = Thread.currentThread().getStackTrace()[1].getMethodName();
    System.out.println(this.getClass().getSimpleName() + "类的" + method + "方法正在执行");
    return "success";
}
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@RequestMapping(value = "/handle_params", params = {"!username"})
public String handleParams(){
    return "success";
}
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@RequestMapping(value = "/handle_headers",headers = {"User-Agent=Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:88.0) Gecko/20100101 Firefox/88.0"})
public String handleHeaders(){
    return "success";
}
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@Controller
public class MatchController {
    @RequestMapping("/matc?")
    public String matchOne(){
        return "success";
    }
}
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@RequestMapping("/matc*")
public String matchMore(){
    return "success";
}
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@RequestMapping("/matc*/layer")
public String matchOneLayer(){
    return "success";
}
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@RequestMapping("/match/**/layers")
public String matchMoreLayers(){
    return "success";
}
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@Controller
public class PathVarController {
    // 路径上可以有站位符，*也是占位符，但是不能获取位置上变量的值，{}可以获取变量的值
    // 方法参数中定义变量接收路径中的变量的值，并用@PathVariable指定路径变量的名称，默认参数中的变量名一致
    @RequestMapping("/user/{id}")
    public String userInfo(@PathVariable("id") String id){
        System.out.println("路径参数id的值为:" + id);
        return "success";
    }
}
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@RequestMapping("/user/{id}/{orderId}")
public String userInfoDetial(@PathVariable("id") String id, @PathVariable("orderId") String orderId){
    System.out.println("路径参数id的值为:" + id);
    System.out.println("路径参数orderId的值为:" + orderId);
    return "success";
}
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