添加PathVariable会更改RequestMapping上的视图路径

时间:2016-03-03 16:00:36

标签: spring-mvc request-mapping

我有一个视图解析器:

@Bean
public InternalResourceViewResolver viewResolver() {
    InternalResourceViewResolver resolver = new InternalResourceViewResolver();
    resolver.setPrefix("WEB-INF/jsp/");
    resolver.setSuffix(".jsp");
    return resolver;
}

和控制器:

@Controller
public class WorkflowListController {

 @RequestMapping(path = "/workflowlist", method = RequestMethod.GET)
 public ModelAndView index() throws LoginFailureException, PacketException,
        NetworkException {

    String profile = "dev";
    List<WorkflowInformation> workflows = workflows(profile);

    Map<String, Object> map = new HashMap<String, Object>();
    map.put("profile", profile);
    map.put("workflows", workflows);
    return new ModelAndView("workflowlist", map);
 }
}

当我调用页面http://127.0.0.1:8090/workflowlist时,它会从src/main/webapp/WEB-INF/jsp/workflowlist.jsp提供jsp。这一切似乎都运作良好。

但是,当我尝试添加@PathVariable

@RequestMapping(path = "/workflowlist/{profile}", method = RequestMethod.GET)
public ModelAndView workflowlist(@PathVariable String profile)
        throws LoginFailureException, PacketException, NetworkException {

    List<WorkflowInformation> workflows = workflows(profile);

    Map<String, Object> map = new HashMap<String, Object>();
    map.put("profile", profile);
    map.put("workflows", workflows);
    return new ModelAndView("workflowlist", map);
}

当我致电页面http://127.0.0.1:8090/workflowlist/dev时,会发出以下消息:

There was an unexpected error (type=Not Found, status=404).
/workflowlist/WEB-INF/jsp/workflowlist.jsp

有人可以解释为什么我在两种情况下都返回相同的视图名称,但在第二个例子中它的行为有所不同吗?

我怎样才能让它发挥作用?

1 个答案:

答案 0 :(得分:1)

问题在于我的viewResolver

resolver.setPrefix("WEB-INF/jsp/");

应该是:

resolver.setPrefix("/WEB-INF/jsp/");

前面有一个/,路径是从根目录(webapps文件夹)中获取的,但是当/丢失时,它将成为相对路径。

我从来没有得到一个答案,为什么视图解析器只占用了路径的目录部分,但这似乎发生了什么。 可能因此您可以定义具有不同根的视图子树。