API查看Web App发布版本+编译时间+环境变量

项目环境: JDK7+Maven3.04

项目架构：SpringMVC

• 方法一：API访问Maven生成的MANIFEST.MF

1. 在pom.xml中添加jar包支持

<dependency>
  <groupId>com.jcabi</groupId>
  <artifactId>jcabi-manifests</artifactId>
  <version>1.1</version>
</dependency>

2. pom.xml配置

配置archive添加

built-at: 编译时间

env: 环境

project-version: 代码分支号

<plugin>
  <groupId>org.apache.maven.plugins</groupId>
  <artifactId>maven-war-plugin</artifactId>
  <version>2.4</version>
  <executions>
    <execution>
      <id>artifact-package</id>
      <phase>package</phase>
      <goals>
        <goal>war</goal>
      </goals>
      <configuration>
        <archiveClasses>true</archiveClasses>
        <warSourceExcludes>WEB-INF/lib/servlet-*</warSourceExcludes>
        <archive>
          <manifestEntries>
            <built-at>${maven.build.timestamp}</built-at>
            <env>${env}</env>
            <project-version>${project.version}</project-version>
          </manifestEntries>
        </archive>
      </configuration>
    </execution>
    <execution>
      <id>local-package</id>
      <phase>package</phase>
      <goals>
        <goal>exploded</goal>
      </goals>
      <configuration>
        <primaryArtifact>false</primaryArtifact>
        <webappDirectory>${project.build.directory}/hiv-local</webappDirectory>
        <archiveClasses>true</archiveClasses>
        <warSourceExcludes>WEB-INF/lib/servlet-*</warSourceExcludes>
        <archive>
          <manifestEntries>
            <built-at>${maven.build.timestamp}</built-at>
            <env>${env}</env>
            <project-version>${project.version}</project-version>
          </manifestEntries>
        </archive>
      </configuration>
    </execution>
  </executions>
</plugin>

3. 编译后结果如下

META-INF/MANIFEST.MF

Manifest-Version: 1.0
Built-By: dell
Build-Jdk: 1.7.0_75
project-version: develop-SNAPSHOT
Created-By: Apache Maven 3.0.4
built-at: 2015-07-02 13:35:38
env: qa
Archiver-Version: Plexus Archiver

4. 配置API访问编译结果并输出

@Controller
public class VersionController {
  @Resource
  private ServletContext context;

  @ResponseBody
  @RequestMapping(value = "/version", method = RequestMethod.GET)
  @ApiOperation(value = "查看编译版本", response = Map.class, httpMethod = "GET", notes = "查看编译版本")
  public Map<String, String> version(HttpServletRequest request) throws IOException {
    Map<String, String> map = new HashMap<String, String>();
    MfMap mfMap = Manifests.DEFAULT.append(new ServletMfs(context));
    map.put("project-version", mfMap.get("project-version"));
    map.put("env", mfMap.get("env"));
    map.put("built-at", mfMap.get("built-at"));
    return map;
  }
}

5. 打成war包启动结果如下：

{"project-version":"develop-SNAPSHOT","built-at":"2015-07-02 13:35:38","env":"qa"}

参考资料: http://manifests.jcabi.com/

• 方法二：使用maven生成变量

1. 在pom.xml文件中配置

<properties>
  <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
  <maven.build.timestamp.format>yyyy-MM-dd HH:mm:ss</maven.build.timestamp.format>
  <timestamp>${maven.build.timestamp}</timestamp>
</properties>

2. 在properties文件中配置

project.version=${project.version}
project.env=${env}
project.built.time=${timestamp}

3. 配置API访问编译结果并输出

@Controller
public class VersionController {
  @Value("${project.version}")
  private String version;
  @Value("${project.env}")
  private String env;
  @Value("${project.built.time}")
  private String builtAt;

  @ResponseBody
  @RequestMapping(value = "version", method = GET)
  @ApiOperation(value = "查看版本信息")
  public Map<String, String> version() {
    Map<String, String> map = new HashMap<String, String>();
    map.put("project-version", version);
    map.put("env", env);
    map.put("built-at", builtAt);
    return map;
  }

}

参考资料: http://stackoverflow.com/questions/13228472/how-to-acces-maven-build-timestamp-for-resource-filtering