spring mvc:练习 @RequestParam和@PathVariable

@RequestParam: 注解将请求参数绑定到你的控制器方法参数

@PathVariable: 注释将一个方法参数绑定到一个URI模板变量的值

 

 

@RequestParam: 注解将请求参数绑定到你的控制器方法参数

@RequestMapping(value="/example/user")public String UserInfo(Model model,	@RequestParam(value="name", defaultValue="Guest") String name)

　　

实例：

package springmvc;import org.springframework.stereotype.Controller;import org.springframework.ui.Model;import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.bind.annotation.RequestParam;@Controllerpublic class RequestParamExampleController {	@RequestMapping(value="/example/user")	public String UserInfo(Model model,			@RequestParam(value="name", defaultValue="Guest") String name)	{						model.addAttribute("name", name);		if("admin".equals(name))		{			model.addAttribute("email", "admin@google.com");		}else {			model.addAttribute("email", "not set");		}				return "example_user";			}}

　　

 

 

 

 

@PathVariable: 注释将一个方法参数绑定到一个URI模板变量的值

@RequestMapping(value="/example/info/{language}/{id}/{name}")public String userInfo2(Model model,			@PathVariable(value="language") String language,			@PathVariable(value="id") Long id,			@PathVariable(value="name")  String name)

　　

实例：

package springmvc;import org.springframework.stereotype.Controller;import org.springframework.ui.Model;import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.bind.annotation.PathVariable;@Controllerpublic class RequestParamExampleController {        @RequestMapping(value="/example/person/{name}/{age}")	public String userPerson(Model model,			@PathVariable(value="name") String name,			@PathVariable(value="age") Long age)	{		model.addAttribute("name", name);		model.addAttribute("age", age);		String desc = "";		if(age > 20)		{			desc = "oldman";		}else {			desc = "yongman";		}		model.addAttribute("desc", desc);		return "example_person";	}}