Spring注解之@GetMapping详解

params 参数详解例如：@GetMapping(value = "/service", params = "serviceName=CREATE_PROJECT")1.包含某个参数（请求数据中有指定参数名）必须包含参数name,name有没有值无所谓，只要包含参数名name就可以@RequestMapping("/request_param")@Controllerpublic class R

19921106

28492人浏览 · 2021-08-28 21:22:21

19921106 · 2021-08-28 21:22:21 发布

params 参数详解

例如：@GetMapping(value = "/service", params = "serviceName=CREATE_PROJECT")

1.包含某个参数（请求数据中有指定参数名）
必须包含参数name,name有没有值无所谓，只要包含参数名name就可以

@RequestMapping("/request_param")
@Controller
public class RequestParamController {
	//请求数据中有指定的参数
	//必须包含参数name,name有没有值无所谓，只要包含参数名name就可以
	@RequestMapping(value="/test1",params= {"name"})  
	public String test1() {
		System.out.println("RequestParamController test1()...");
		return "test";//跳转到test.jsp
	}
}
这些都可以访问
http://127.0.0.1:9999/springmvc/request_param/test1?name
http://127.0.0.1:9999/springmvc/request_param/test1?name=tom
http://127.0.0.1:9999/springmvc/request_param/test1?name=tom&password=123

2.不包含某个参数（请求数据中没有指定参数名）
只要不包含参数名name就可以

@RequestMapping("/request_param")
@Controller
public class RequestParamController {
	//只要不包含参数名name就可以
	@RequestMapping(value="/test2",params= {"!name"})  
	public String test2() {
		System.out.println("RequestParamController test2()...");
		return "test";//跳转到test.jsp
	}
}
这些都可以访问
http://127.0.0.1:9999/springmvc/request_param/test2
http://127.0.0.1:9999/springmvc/request_param/test1?id=9

3.请求数据中指定参数名=值
只要参数名有name=tom的就可以

@RequestMapping("/request_param")
@Controller
public class RequestParamController {
	@RequestMapping(value="/test3",params= {"name=tom"})  
	public String test3() {
		System.out.println("RequestParamController test3()...");
		return "test";//跳转到test.jsp
	}
}
这些都可以访问
http://127.0.0.1:9999/springmvc/request_param/test3?name=tom
http://127.0.0.1:9999/springmvc/request_param/test3?name=tom&password=123

4.请求数据中指定参数名!=值

没有参数name也行，有name没有值也行，name不能为tom

@RequestMapping("/request_param")
@Controller
public class RequestParamController {
	@RequestMapping(value="/test4",params= {"name!=tom"})  
	public String test4() {
		System.out.println("RequestParamController test4()...");
		return "test";//跳转到test.jsp
	}
}
这些都可以访问
http://127.0.0.1:9999/springmvc/request_param/test4
http://127.0.0.1:9999/springmvc/request_param/test4?id=9
http://127.0.0.1:9999/springmvc/request_param/test4?name
http://127.0.0.1:9999/springmvc/request_param/test4?name=jack

5.组合使用是"且"的关系
之间用&

@RequestMapping("/request_param")
@Controller
public class RequestParamController {
	//必须有id参数,name不能为tom
	@RequestMapping(value="/test5",params= {"id","name!=tom"})  
	public String test5() {
		System.out.println("RequestParamController test5()...");
		return "test";//跳转到test.jsp
	}
}
这些都可以访问
http://127.0.0.1:9999/springmvc/request_param/test5?id
http://127.0.0.1:9999/springmvc/request_param/test5?id=5&name
http://127.0.0.1:9999/springmvc/request_param/test5?id=5&name=jack