java - 我在哪个目录运行 java -jar my-webapp-0.1.0-standalone.jar？

Question

在 this tutorial它说

Now create an uberjar of your webapp (via lein uberjar), copy it (target/my-webapp-0.1.0-standalone.jar) to wherever you like, and run it in the usual way:

java -jar my-webapp-0.1.0-standalone.jar 8080

我从它自己的目录~/myapp/target/运行它，但收到错误:

target $ java -jar my-webapp-0.1.0-standalone.jar

no main manifest attribute, in my-webapp-0.1.0-standalone.jar

-main 函数已在 handler.clj 中:

(ns my-webapp.handler
  (:require [my-webapp.views :as views]
            [compojure.core :as cc]
            [compojure.handler :as handler]
            [compojure.route :as route]
            [ring.adapter.jetty :as jetty]
            (:gen-class)))

(cc/defroutes app-routes
  (cc/GET "/"
       []
       (views/home-page))
  (cc/GET "/add-location"
       []
       (views/add-location-page))
  (cc/POST "/add-location"
        {params :params}
        (views/add-location-results-page params))
  (cc/GET "/location/:loc-id"
       [loc-id]
       (views/location-page loc-id))
  (cc/GET "/all-locations"
       []
       (views/all-locations-page))
  (route/resources "/")
  (route/not-found "Not Found"))

(def app
  (handler/site app-routes))

(defn -main
  [& [port]]
  (let [port (Integer. (or port
                           (System/getenv "PORT")
                           5000))]
    (jetty/run-jetty #'app {:port  port
                            :join? false})))

我做错了什么？

<小时/> <小时/>

编辑

我正在添加我的project.clj:

(defproject my-webapp "0.1.0"
  :description "FIXME: write description"
  :url "http://example.com/FIXME"
  :dependencies [[org.clojure/clojure "1.5.1"]
                 [hiccup "1.0.2"]
                 [org.clojure/java.jdbc "0.2.3"]
                 [com.h2database/h2 "1.3.170"]
                 [compojure "1.1.6"]
                 [ring/ring-jetty-adapter "1.2.1"]]
  :main my-webapp.handler
  :plugins [[lein-ring "0.8.8"]]
  :ring {:handler my-webapp.handler/app}
  :profiles
  {:dev {:dependencies [[javax.servlet/servlet-api "2.5"]
                        [ring-mock "0.1.5"]
                        [org.clojure/java.jdbc "0.0.4"] ]}})

和handler.clj

    (ns my-webapp.handler
  (:require [my-webapp.views :as views]
            [compojure.core :as cc]
            [compojure.handler :as handler]
            [compojure.route :as route]
            [ring.adapter.jetty :as jetty])
  (:gen-class))

(cc/defroutes app-routes
  (cc/GET "/"
       []
       (views/home-page))
  (cc/GET "/add-location"
       []
       (views/add-location-page))
  (cc/POST "/add-location"
        {params :params}
        (views/add-location-results-page params))
  (cc/GET "/location/:loc-id"
       [loc-id]
       (views/location-page loc-id))
  (cc/GET "/all-locations"
       []
       (views/all-locations-page))
  (route/resources "/")
  (route/not-found "Not Found"))

(def app
  (handler/site app-routes))

(defn -main
  [& [port]]
  (let [port (Integer. (or port
                           (System/getenv "PORT")
                           5000))]
    (jetty/run-jetty #'app {:port  port
                            :join? false})))

Answer 1

您是否在deploy your webapp section中执行了这一步？

• 并添加:main my-webapp.handler

如果这没有帮助，那么您可以发布整个project.clj 文件以便我们查找其他问题吗？