使用Maven Multi Module创建Java多层应用程序

我想使用maven创建一个多层java项目，如下所示：

  1. PresentationLayer-GUIModule（jsp / jsf页面的最顶层）
  2. PresentationLayer-GatewayModule（Web服务的最顶层）
  3. BusinessLayer-ServiceModule（中间层）
  4. DataAccessLayer（最下层）
  5. CommonLayer（可从所有图层访问的垂直图层）

Maven模块结构：

  • 根pom
    • EAR pom
    • GUIModule pom
    • GatewaModule pom
    • ServiceModule pom
    • DataAccessLayer pom
    • CommonLayer pom

我创建了一个名为flashcard的项目，其中包含以下pom配置：

根pom： 

  4.0.0 com.flashcard flashcard 1.0  BusinessLayer-ServiceModule CommonLayer EAR PresentationLayer-GatewayModule PresentationLayer-GUIModule DataAccessLayer-ManagerModule  pom flashcard http://maven.apache.org  UTF-8 1.8 1.8 1.0.0     javax.ejb javax.ejb-api 3.2   javax javaee-web-api 7.0   com.flashcard PresentationLayer-GatewayModule 1.0 ejb compile   com.flashcard PresentationLayer-GUIModule 1.0 war compile   com.flashcard BusinessLayer-ServiceModule 1.0 ejb compile   com.flashcard CommonLayer 1.0 jar compile   com.flashcard DataAccessLayer-ManagerModule 1.0 ejb compile        org.apache.maven.plugins maven-compiler-plugin 3.1  1.8 1.8    org.apache.maven.plugins maven-war-plugin 3.2.0   org.apache.maven.plugins maven-ejb-plugin 3.0.0    true   3.2

EAR pom： 

   flashcard com.flashcard 1.0  4.0.0 EAR ear EAR http://maven.apache.org  UTF-8    com.flashcard PresentationLayer-GatewayModule 1.0 ejb compile   com.flashcard PresentationLayer-GUIModule 1.0 war compile   com.flashcard BusinessLayer-ServiceModule 1.0 ejb compile   com.flashcard CommonLayer 1.0 jar compile   com.flashcard DataAccessLayer-ManagerModule 1.0 ejb compile      org.apache.maven.plugins maven-ear-plugin  lib   com.flashcard PresentationLayer-GUIModule /myflashcard   com.flashcard BusinessLayer-ServiceModule   com.flashcard DataAccessLayer-ManagerModule   com.flashcard CommonLayer   com.flashcard PresentationLayer-GatewayModule      org.apache.maven.plugins maven-war-plugin   org.apache.maven.plugins maven-ejb-plugin   org.apache.maven.plugins maven-compiler-plugin

GUIModule pom： 

   flashcard com.flashcard 1.0  4.0.0 PresentationLayer-GUIModule war PresentationLayer-GUIModule Maven Webapp http://maven.apache.org   junit junit 3.8.1 test   com.flashcard BusinessLayer-ServiceModule 1.0 ejb provided   com.flashcard CommonLayer 1.0 jar provided    PresentationLayer-GUIModule   org.apache.maven.plugins maven-war-plugin

GatewayModule pom： 

   flashcard com.flashcard 1.0  4.0.0 PresentationLayer-GatewayModule ejb PresentationLayer-GatewayModule http://maven.apache.org  UTF-8    junit junit 3.8.1 test   com.flashcard BusinessLayer-ServiceModule 1.0 ejb provided   com.flashcard CommonLayer 1.0 jar provided   javax javaee-api 7.0

ServiceModule pom： 

   flashcard com.flashcard 1.0  4.0.0 BusinessLayer-ServiceModule ejb BusinessLayer-ServiceModule http://maven.apache.org  UTF-8    junit junit 3.8.1 test   com.flashcard DataAccessLayer-ManagerModule 1.0 ejb provided   com.flashcard CommonLayer 1.0 jar provided      maven-ejb-plugin 3.0.0    true   3.2    org.apache.maven.plugins maven-compiler-plugin 3.1  1.8 1.8

DataAccessLayer pom： 

   flashcard com.flashcard 1.0  4.0.0 DataAccessLayer-ManagerModule ejb DataAccessLayer-ManagerModule http://maven.apache.org  UTF-8    junit junit 3.8.1 test   com.flashcard CommonLayer 1.0 jar provided      maven-ejb-plugin 3.0.0    true   3.2    org.apache.maven.plugins maven-compiler-plugin 3.1  1.8 1.8

CommonLayer pom： 

   flashcard com.flashcard 1.0  4.0.0 CommonLayer jar CommonLayer http://maven.apache.org  UTF-8    javax javaee-api 7.0 provided   com.google.code.gson gson 2.2.4   org.bouncycastle bcprov-jdk15on 1.54   joda-time joda-time 2.7   org.apache.logging.log4j log4j-core 2.0.2

这些文件导致创建一个包含所有其他模块的ear文件，并在jboss application server eap-7.1成功部署，但是此地址找不到Web服务： http://localhost:8080/myflashcard/getflashcard

RESTful Web服务： 

 package com.flashcard; import com.google.gson.Gson; import org.json.JSONObject; import javax.ejb.Stateless; import javax.interceptor.Interceptors; import javax.ws.rs.GET; import javax.ws.rs.Path; import javax.ws.rs.Produces; import javax.ws.rs.core.MediaType; @Stateless @Path("/getflashcard") public class GetFlashcard { @Interceptors(Validator.class) @GET @Produces(MediaType.APPLICATION_JSON) public String getFlashcard() { String jsonString = new JSONObject().put("ip", "192.167.1.15").toString(); return jsonString; } }

application.xml中： 

   EAR  com.flashcard-PresentationLayer-GatewayModule-1.0.jar    com.flashcard-PresentationLayer-GUIModule-1.0.war /PresentationLayer-GUIModule    com.flashcard-BusinessLayer-ServiceModule-1.0.jar   com.flashcard-DataAccessLayer-ManagerModule-1.0.jar  lib

GatewayModule是一个ejb模块，但对于Web服务，该模块必须是一个Web模块。 将其更改为Web模块并重试，但要注意应用程序上下文，因为在这种情况下，您将有2个上下文：一个用于gui，一个用于网关。

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