@RequestMapping(value="/users/{userId}/topics/{topicId}")  
public String test(  
       @PathVariable(value="userId") int userId,   
       @PathVariable(value="topicId") int topicId)

如請求的URL為“控制器URL/users/123/topics/456”，則自動將URL中模板變量{userId}和{topicId}綁定到通過@PathVariable注解的同名參數(shù)上，即入?yún)⒑髐serId=123、topicId=456。

代碼在PathVariableTypeController中。

@RequestParam(參數(shù)綁定到控制器)和@PathVariable(參數(shù)綁定到url模板變量)

spring mvc:練習(xí) @RequestParam和@PathVariable

@RequestParam: 注解將請求參數(shù)綁定到你的控制器方法參數(shù)
@PathVariable: 注釋將一個方法參數(shù)綁定到一個URI模板變量的值

@RequestParam: 注解將請求參數(shù)綁定到你的控制器方法參數(shù)

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

實例：

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;
 
@Controller
public 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: 注釋將一個方法參數(shù)綁定到一個URI模板變量的值

@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)

實例：

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;
 
@Controller
public 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";
    } 
}

以上為個人經(jīng)驗，希望能給大家一個參考，也希望大家多多支持腳本之家。

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