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How to display buildnumber in spring-based web application

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长情又很酷 2021-02-14 10:16

I need to display build number in my index.jsp page





Title (build: B         
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                <span>2021-02-14 10:58</span>
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<p>Here's how I've done it, using maven + jstl and leaving out Spring as it just makes it more complicated.</p>

<p>build.jsp</p>

<pre><code><%@ taglib uri="http://java.sun.com/jsp/jstl/fmt" prefix="fmt" %>
<jsp:useBean id="dateValue" class="java.util.Date" />
<jsp:setProperty name="dateValue" property="time" value="${timestamp}" />
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Build info</title>
</head>
<body>
<table>
<tr>
    <td>Build time: </td>
    <td><fmt:formatDate value="${dateValue}" pattern="dd.MM.yyyy HH:mm:ss" /></td>
</tr>
<tr>
    <td>Build number: </td>
    <td>${buildNumber}</td>
</tr>
<tr>
    <td>Branch: </td>
    <td>${scmBranch}</td>
</tr>
</table>
</body>
</html>
</code></pre>

<p>Maven pom</p>

<pre><code><!-- plugin that sets build number as a maven property -->
<plugin>
  <groupId>org.codehaus.mojo</groupId>
  <artifactId>buildnumber-maven-plugin</artifactId>
  <version>1.1</version>
  <executions>
    <execution>
      <phase>validate</phase>
      <goals>
        <goal>create</goal>
      </goals>
      <configuration>
        <format>{0,date,yyDHHmm}</format>
        <items>
          <item>timestamp</item>
        </items>
      </configuration>
    </execution>
  </executions>
  <configuration>
    <format>{0,date,yyDHHmm}</format>
    <items>
      <item>timestamp</item>
    </items>
  </configuration>
</plugin>
<!-- war plugin conf to enable filtering for our file -->
<plugin>
    <groupId>org.apache.maven.plugins</groupId>
    <artifactId>maven-war-plugin</artifactId>
    <configuration>
        <webResources>
            <resource>
                <directory>src/main/webapp/</directory>
                <includes>
                    <include>build.jsp</include>
                </includes>
                <filtering>true</filtering>
                <targetPath>.</targetPath>
            </resource>
        </webResources>
    </configuration>
</plugin>
</code></pre>

<p>More details about the usage of buildnumber-maven-plugin can be found on the usage page.</p>
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                <span>2021-02-14 11:15</span>
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<p>You may load the <code>.properties</code> file as a localization message source (using ResourceBundlerMessageSource) and access it in JSP using <code><spring:message></code> or <code><fmt:message></code>:</p>

<p><code>src/main/resources/buildInfo.properties</code>:</p>

<pre><code>buildNumber=${buildNumber}
</code></pre>

<p>where <code>buildNumber</code> is exposed as Roland Schneider suggests.</p>

<p>Context configuration:</p>

<pre><code><bean id="messageSource" class="org.springframework.context.support.ResourceBundleMessageSource">
    <property name = "basenames"><value>buildInfo</value></property>
    <!-- Or a comma separated list if you have multiple .properties files -->
</bean>
</code></pre>

<p>JSP file:</p>

<pre><code>Version: <spring:message code = "buildNumber" />
</code></pre>

<p><code>pom.xml</code>:</p>

<pre><code><resources>
    <resource>
        <directory>src/main/resources</directory>
        <filtering>true</filtering>
    </resource>
</resources>
</code></pre>
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<p><strong>Warning</strong>: Resources filtering does not work this way for .jsp files. As Pascal Thivent pointed out (thank you) an index.jsp is not a resource but belongs to the webapp.</p>

<hr>

<p>I do not know the exact answer to your question but you could hard-code the buildnumber into the index.jsp file with maven directly when the index.jsp file is copied to the target directory. You only would need to insert a variable into the index.jsp and configure the maven-resource-plugin to enable filtering.</p>

<p><strong><em>Example:</em></strong></p>

<p><strong>index.jsp</strong></p>

<pre><code><!DOCTYPE HTML>
<html>
<head>
<meta charset="UTF-8" />
<title>Title (build: ${buildNumber} )
</head>
</code></pre>

<p><strong>Maven Configuration (extract from pom.xml)</strong></p>

<pre><code><build>

    <!-- Enable Resource Filtering -->
    <resources>
        <resource>
            <directory>src/main/resources</directory>
            <filtering>true</filtering>
        </resource>
    </resources>

    <!-- Fetch the SVN build-number into var ${buildNumber} -->
    <plugins>
        <plugin>
            <groupId>org.codehaus.mojo</groupId>
            <artifactId>buildnumber-maven-plugin</artifactId>
            <executions>
                <execution>
                    <phase>validate</phase>
                    <goals>
                        <goal>create</goal>
                    </goals>
                </execution>
            </executions>
            <configuration>
                <doCheck>false</doCheck>
                <doUpdate>false</doUpdate>
            </configuration>
        </plugin>
    </plugins>

</build>
</code></pre>

<p>For more information on filtering have a look at the Maven Filtering Manual</p>
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