RESTful servlet URL - web.xml 中的 servlet 映射 [英] RESTful servlet URLs - servlet-mapping in web.xml

问题描述

我觉得这是一个常见问题，但我研究的任何内容都没有奏效...

I feel like this is a common problem but nothing I've researched has worked yet...

在我的 web.xml 中，我有一个所有 REST 调用的映射 -

In my web.xml I have a mapping for all REST calls -

  <servlet-mapping>
    <servlet-name>springmvc</servlet-name>
    <url-pattern>/rest/*</url-pattern>
  </servlet-mapping>

如果 URL 是 -

GET /rest/people

但是失败如果是

GET /rest/people/1

我收到一个 400 Bad Request 错误，说明 客户端发送的请求在语法上不正确 ().我不确定它是否已经进入 Spring servlet 以进行路由...

I get a 400 Bad Request error saying The request sent by the client was syntactically incorrect (). I'm not sure it even made it to the Spring servlet to get routed...

如何通配以 /rest 开头的任何内容，以便对其进行适当处理?

How can I wildcard anything that starts with /rest so that it can be handled appropriately?

换句话说，我希望以下所有内容都是有效的 -

In other words, I'd like for all of the following to be valid -

GET /rest/people
GET /rest/people/1
GET /rest/people/1/phones
GET /rest/people/1/phones/23

编辑 - 按照要求的控制器代码

Edit - Controller code as requested

@Controller
@RequestMapping("/people")
public class PeopleController {

    @RequestMapping(method=RequestMethod.GET)
    public @ResponseBody String getPeople() {
        return GsonFactory.getInstance().toJson(LookupDao.getInstance().getPeople());
    }

    @RequestMapping(value="{id}", method=RequestMethod.GET)
    public @ResponseBody String getPerson(@PathVariable String id) {
        return GsonFactory.getInstance().toJson(LookupDao.getInstance().getPerson(id));
    }
}

回答

@matsev 是否​​有 / 似乎并不重要.

@matsev It didn't seem to matter if I had the / there or not.

当我为公共视图转置变量名称时，我更改了一些内容以使其正常工作.

While I was transposing the variable names for public view I changed a couple things to make it work.

原创

@RequestMapping(value="{id}", method=RequestMethod.GET)
public @ResponseBody String getPerson(@PathVariable String userId) {
    return GsonFactory.getInstance().toJson(LookupDao.getInstance().getPerson(userId));
}

我发布的内容

@RequestMapping(value="{id}", method=RequestMethod.GET)
public @ResponseBody String getPerson(@PathVariable String id) {
    return GsonFactory.getInstance().toJson(LookupDao.getInstance().getPerson(id));
}

变量名不匹配让我...我把它留在这里作为对所有人的警告...匹配你的变量名！

推荐答案

尝试在 {id} 之前添加一个 /:

Try add a /before the {id}:

@RequestMapping(value="/{id}", method=RequestMethod.GET)

没有它，id 将直接附加到人们的 url，例如 /rest/people1 而不是 /rest/people/1.

Without it, the id will be appended directly to the people url, e.g /rest/people1 as opposed to /rest/people/1.

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