如何在 Spring MVC 中将一个控制器调用到另一个控制器 URL？
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How to call one controller to another controller URL in Spring MVC?
提问by user2963481
Hi I am new to Spring MVC ,I want to call method from one controller to another controller ,how can I do that .please check my code below
嗨，我是 Spring MVC 的新手，我想从一个控制器调用方法到另一个控制器，我该怎么做。请检查下面的代码
@Controller
@RequestMapping(value="/getUser")
@ResponseBody
public User getUser()
{
User u = new User();
//Here my dao method is activated and I wil get some userobject
return u;
}
@Controller
@RequestMapping(value="/updatePSWD")
@ResponseBody
public String updatePswd()
{
here I want to call above controller method and
I want to update that user password here.
how can I do that
return "";
}
any one help me .
任何人帮助我。
回答by paul
You never have to put business logic into the controller, and less business logic related with database, the transactionals class/methods should be in the service layer. But if you need to redirect to another controller method use redirect
您永远不必将业务逻辑放入控制器中，与数据库相关的业务逻辑较少，事务类/方法应该在服务层。但是如果您需要重定向到另一个控制器方法，请使用重定向
@RequestMapping(value="/updatePSWD")
@ResponseBody
public String updatePswd()
{
return "redirect:/getUser.do";
}
回答by Pavel Evstigneev
Can do like this:
可以这样做：
@Autowired
private MyOtherController otherController;
@RequestMapping(value = "/...", method = ...)
@ResponseBody
public String post(@PathVariable String userId, HttpServletRequest request) {
return otherController.post(userId, request);
}
回答by Raedwald
A controller class is a Java class like any other. Although Spring does clever magic for you, using reflection to examine the annotations, yourcode can call methods just as normal Java code:
控制器类和其他类一样是一个 Java 类。尽管 Spring 为您提供了巧妙的魔法，使用反射来检查注释，但您的代码可以像普通的 Java 代码一样调用方法：
public String updatePasswd()
{
User u = getUser();
// manipulate u here
return u;
}
回答by Oomph Fortuity
Here no need to add @reponseBodyannotation as your redirecting to another controller Your code will look like
这里不需要添加@reponseBody注释作为您重定向到另一个控制器您的代码看起来像
@Controller
class ControlloerClass{
@RequestMapping(value="/getUser",method = RequestMethod.GET)
@ResponseBody
public User getUser(){
User u = new User();
//Here my dao method is activated and I wil get some userobject
return u;
}
@RequestMapping(value="/updatePSWD",method = RequestMethod.GET)
public String updatePswd(){
//update your user password
return "redirect:/getUser";
}
}
回答by Thuy Nguyen
You should place method getUser in a service (example UserService class) .
您应该将方法 getUser 放在服务中（例如 UserService 类）。
In the getUser controller, you call method getUser in the Service to get the User
在 getUser 控制器中，调用 Service 中的 getUser 方法来获取 User
Similarly, in the updatePswd controller, you call method getUser in the Service ,too
同样，在 updatePswd 控制器中，您也调用 Service 中的 getUser 方法
