Question

我正在尝试从文件夹中读取文件，这些文件不在jar中，而是相对于运行jar的文件。胖罐使用maven shade plugin构建

阴影插件

<!--Start of comments-->
<div class="col-md-12">
  <%= form_for [@article, @comment],
               :html => {class: "form-horizontal", role: "form"} do 
                  |f| %>
    <% if @comment.errors.any? %>
     <div class="panel panel-danger col-md-offset-1">
       <div class="panel-heading">
         <h2 class="panel-title">
           <%= pluralize(@comment.error.count, "error") %>
           prohibited this comment from being saved:
         </h2>
         <div class="panel-body">
          <ul>
            <% @comment.errors.full_messages.each do |msg| %>
              <li><%= msg %></li>
            <% end %>
          </ul>
         </div>
       </div>
     </div>
    <% end %>

    <div class="form-group">
      <div class="control-label col-md-2">
        <%= f.label :body, 'New Comment' %>
      </div>
      <div class="col-md-10">
       <%= f.text_area :body, rows: 10, class: "form-control", placeholder: "New Comment" %>
      </div>
    </div>

    <div class="form-group">
      <div class="col-md-offset-2 col-md-10">
        <%= f.submit "Add Comment", class: "btn btn-primary btn-lg pull-right" %>
      </div>
    </div>

  <% end %>
</div>

这会生成清单文件

 <plugin>
                    <groupId>org.apache.maven.plugins</groupId>
                    <artifactId>maven-shade-plugin</artifactId>
                    <version>3.1.1</version>
                    <configuration>
                       <transformers>
                        <transformer implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
                          <manifestEntries>
                            <Main-Class>com.xx.validaor.Validator</Main-Class>
                              <Class-Path>csv_files2</Class-Path>
                            <X-Compile-Source-JDK>1.9</X-Compile-Source-JDK>
                            <X-Compile-Target-JDK>1.9</X-Compile-Target-JDK>
                          </manifestEntries>
                        </transformer>
                        <transformer implementation="org.apache.maven.plugins.shade.resource.AppendingTransformer">
                          <resource>META-INF/spring.handlers</resource>
                        </transformer>
                        <transformer implementation="org.apache.maven.plugins.shade.resource.AppendingTransformer">
                          <resource>META-INF/spring.schemas</resource>
                        </transformer>


                      </transformers>
                    </configuration>
                    <executions>
                      <execution>
                        <phase>package</phase>
                        <goals>
                          <goal>shade</goal>
                        </goals>
                      </execution>
                    </executions>
                  </plugin>

这是从文件夹

运行

Manifest-Version: 1.0
Archiver-Version: Plexus Archiver
Created-By: Apache Maven 3.3.9
Build-Jdk: 9.0.1
Class-Path: csv_files2
Main-Class: com.xx.validaor.Validator
X-Compile-Source-JDK: 1.9
X-Compile-Target-JDK: 1.9

在csv_files2里面我试图把另一个csv_files2文件夹放在一堆没有改变任何东西的文件中

java -jar my-0.0.1-SNAPSHOT.jar

logs/
csv_files2/
murex-validator-0.0.1-SNAPSHOT.jar

输出

URL resource = getClass().getClassLoader().getResource("/csv_files2/");
        if (resource == null) {
            logger.error("1   /csv_files2/ did not work");
        }

        resource = getClass().getClassLoader().getResource("csv_files2/");
        if (resource == null) {
            logger.error("2   csv_files2/ did not work");
        }

        resource = getClass().getClassLoader().getResource("/csv_files2");
        if (resource == null) {
            logger.error("3   /csv_files2 did not work");
        }

        resource = getClass().getClassLoader().getResource("csv_files2");
        if (resource == null) {
            logger.error("4   csv_files2 did not work");
        }

        resource = getClass().getClassLoader().getResource("./csv_files2");
        if (resource == null) {
            logger.error("5   ./csv_files2 did not work");
        }
        File[] files2 = Paths.get(resource.toURI()).toFile().listFiles();

Answer 1

尝试在这样的阴影插件中添加'/'到csv_files2的末尾

<Main-Class>com.td.validaor.Validator</Main-Class>
<Class-Path>csv_files2/</Class-Path>
<X-Compile-Source-JDK>1.9</X-Compile-Source-JDK>
<X-Compile-Target-JDK>1.9</X-Compile-Target-JDK>

外部classpath文件夹中的Java列表文件

1 个答案: