AppFuse 3的乱码问题

Posted 2020-09-28 wzzkaifa

书接上回：AppFuse 3常见问题与解决方法 ，一个新问题：乱码! 在3.0.0版本号下，运行mvn appfuse:full-source命令后使用mvn jetty:run启动工程，页面上就出现了乱码。我要说的是这个乱码问题很有趣，它的有趣之处在于最后的解决方法看上去与问题差的太远。这个解决方法是：找到pom中对hibernate3-maven-plugin的配置，将当中的<executions/>部分凝视掉，即不在process-test-resources阶段运行hbm2ddl。

（假设你须要导出schema到数据库，能够手动运行mvn hibernate3:hbm2ddl,这也更符合实际开发的须要）。是的，看上去没有不论什么关系。可是问题就是出在了这里！以下我们回退到问题发生时一步步地进行排查。对于本文列出之外的一些细节问题，能够參考：基于Appfuse 2.1高速构建工程的注意事项 本文原文出处: http://blog.csdn.net/bluishglc/article/details/38640715 严禁不论什么形式的转载，否则将托付CSDN官方维护权益！

首先，查看编译之后的输出文件夹target/classes下的中文properties文件。能够确定这件文件本身就没有转码，是native2ascii插件没有正常工作吗？通过检查。发现问题不在native2ascii-maven-plugin的配置上。使用mvn clean package -X查看maven运行过程中的log信息，发现了以下一段有趣的输出：

[DEBUG] -----------------------------------------------------------------------
[DEBUG] Goal:          org.apache.maven.plugins:maven-resources-plugin:2.6:resources (default-resources)
[DEBUG] Style:         Regular
[DEBUG] Configuration: <?
xml version="1.0" encoding="UTF-8"?>
<configuration>
  <buildFilters default-value="${project.build.filters}"/>
  <encoding default-value="${project.build.sourceEncoding}">${encoding}</encoding>
  <escapeString>${maven.resources.escapeString}</escapeString>
  <escapeWindowsPaths default-value="true">${maven.resources.escapeWindowsPaths}</escapeWindowsPaths>
  <includeEmptyDirs default-value="false">${maven.resources.includeEmptyDirs}</includeEmptyDirs>
  <outputDirectory default-value="${project.build.outputDirectory}"/>
  <overwrite default-value="false">${maven.resources.overwrite}</overwrite>
  <project default-value="${project}"/>
  <resources default-value="${project.resources}"/>
  <session default-value="${session}"/>
  <supportMultiLineFiltering default-value="false">${maven.resources.supportMultiLineFiltering}</supportMultiLineFiltering>
  <useBuildFilters default-value="true"/>
  <useDefaultDelimiters default-value="true"/>
</configuration>
[DEBUG] -----------------------------------------------------------------------
[DEBUG] Goal:          org.apache.maven.plugins:maven-compiler-plugin:3.1:compile (default-compile)
[DEBUG] Style:         Regular
[DEBUG] Configuration: <?
xml version="1.0" encoding="UTF-8"?>
<configuration>
  <basedir default-value="${basedir}"/>
  <buildDirectory default-value="${project.build.directory}"/>
  <classpathElements default-value="${project.compileClasspathElements}"/>
  <compileSourceRoots default-value="${project.compileSourceRoots}"/>
  <compilerId default-value="javac">${maven.compiler.compilerId}</compilerId>
  <compilerReuseStrategy default-value="${reuseCreated}">${maven.compiler.compilerReuseStrategy}</compilerReuseStrategy>
  <compilerVersion>${maven.compiler.compilerVersion}</compilerVersion>
  <debug default-value="true">${maven.compiler.debug}</debug>
  <debuglevel>${maven.compiler.debuglevel}</debuglevel>
  <encoding default-value="${project.build.sourceEncoding}">${encoding}</encoding>
  <executable>${maven.compiler.executable}</executable>
  <failOnError default-value="true">${maven.compiler.failOnError}</failOnError>
  <forceJavacCompilerUse default-value="false">${maven.compiler.forceJavacCompilerUse}</forceJavacCompilerUse>
  <fork default-value="false">${maven.compiler.fork}</fork>
  <generatedSourcesDirectory default-value="${project.build.directory}/generated-sources/annotations"/>
  <maxmem>${maven.compiler.maxmem}</maxmem>
  <meminitial>${maven.compiler.meminitial}</meminitial>
  <mojoExecution>${mojoExecution}</mojoExecution>
  <optimize default-value="false">${maven.compiler.optimize}</optimize>
  <outputDirectory default-value="${project.build.outputDirectory}"/>
  <projectArtifact default-value="${project.artifact}"/>
  <showDeprecation default-value="false">${maven.compiler.showDeprecation}</showDeprecation>
  <showWarnings default-value="false">${maven.compiler.showWarnings}</showWarnings>
  <skipMain>${maven.main.skip}</skipMain>
  <skipMultiThreadWarning default-value="false">${maven.compiler.skipMultiThreadWarning}</skipMultiThreadWarning>
  <source default-value="1.5">1.7</source>
  <staleMillis default-value="0">${lastModGranularityMs}</staleMillis>
  <target default-value="1.5">1.7</target>
  <useIncrementalCompilation default-value="true">${maven.compiler.useIncrementalCompilation}</useIncrementalCompilation>
  <verbose default-value="false">${maven.compiler.verbose}</verbose>
  <mavenSession default-value="${session}"/>
  <session default-value="${session}"/>
</configuration>
[DEBUG] -----------------------------------------------------------------------
[DEBUG] Goal:          org.codehaus.mojo:native2ascii-maven-plugin:1.0-beta-1:native2ascii (native2ascii-utf8)
[DEBUG] Style:         Regular
[DEBUG] Configuration: <?xml version="1.0" encoding="UTF-8"?>
<configuration>
  <encoding default-value="${project.build.sourceEncoding}">UTF8</encoding>
  <includes>
    <include>ApplicationResources_zh*.properties</include>
    <include>displaytag_zh*.properties</include>
  </includes>
  <tempDir default-value="${project.build.directory}"/>
  <workDir default-value="${project.build.outputDirectory}"/>
</configuration>
[DEBUG] -----------------------------------------------------------------------
[DEBUG] Goal:          org.apache.maven.plugins:maven-resources-plugin:2.6:testResources (default-testResources)
[DEBUG] Style:         Regular
[DEBUG] Configuration: <?xml version="1.0" encoding="UTF-8"?
>
<configuration>
  <buildFilters default-value="${project.build.filters}"/>
  <encoding default-value="${project.build.sourceEncoding}">${encoding}</encoding>
  <escapeString>${maven.resources.escapeString}</escapeString>
  <escapeWindowsPaths default-value="true">${maven.resources.escapeWindowsPaths}</escapeWindowsPaths>
  <includeEmptyDirs default-value="false">${maven.resources.includeEmptyDirs}</includeEmptyDirs>
  <outputDirectory default-value="${project.build.testOutputDirectory}"/>
  <overwrite default-value="false">${maven.resources.overwrite}</overwrite>
  <project default-value="${project}"/>
  <resources default-value="${project.testResources}"/>
  <session default-value="${session}"/>
  <skip>${maven.test.skip}</skip>
  <supportMultiLineFiltering default-value="false">${maven.resources.supportMultiLineFiltering}</supportMultiLineFiltering>
  <useBuildFilters default-value="true"/>
  <useDefaultDelimiters default-value="true"/>
</configuration>
[DEBUG] --- init fork of com.github:demo:1.0-SNAPSHOT for org.codehaus.mojo:hibernate3-maven-plugin:2.2:hbm2ddl (default) ---
[DEBUG] Dependencies (collect): []
[DEBUG] Dependencies (resolve): []
[DEBUG] -----------------------------------------------------------------------
[DEBUG] Goal:          org.apache.maven.plugins:maven-resources-plugin:2.6:resources (default-resources)
[DEBUG] Style:         Regular
[DEBUG] Configuration: <?
xml version="1.0" encoding="UTF-8"?>
<configuration>
  <buildFilters default-value="${project.build.filters}"/>
  <encoding default-value="${project.build.sourceEncoding}">${encoding}</encoding>
  <escapeString>${maven.resources.escapeString}</escapeString>
  <escapeWindowsPaths default-value="true">${maven.resources.escapeWindowsPaths}</escapeWindowsPaths>
  <includeEmptyDirs default-value="false">${maven.resources.includeEmptyDirs}</includeEmptyDirs>
  <outputDirectory default-value="${project.build.outputDirectory}"/>
  <overwrite default-value="false">${maven.resources.overwrite}</overwrite>
  <project default-value="${project}"/>
  <resources default-value="${project.resources}"/>
  <session default-value="${session}"/>
  <supportMultiLineFiltering default-value="false">${maven.resources.supportMultiLineFiltering}</supportMultiLineFiltering>
  <useBuildFilters default-value="true"/>
  <useDefaultDelimiters default-value="true"/>
</configuration>
[DEBUG] --- exit fork of com.github:demo:1.0-SNAPSHOT for org.codehaus.mojo:hibernate3-maven-plugin:2.2:hbm2ddl (default) ---

这段log的有趣之处在于：resources：resources 被运行了两次。第一次是在native2ascii:native2ascii之前，第二次是在 native2ascii:native2ascii 运行之后运行hbm2ddl时又被又一次调用了一次。为了准确地了解resources：resources和native2ascii:native2ascii的运行顺序，我们从它们各自的文档上找到它们默认绑定的周期说明：

resources:resources -> process-resources

native2ascii:native2ascii -> process-classes

maven的默认生命周期例如以下：   

<phases>

  <phase>validate</phase>

  <phase>initialize</phase>

  <phase>generate-sources</phase>

  <phase>process-sources</phase>

  <phase>generate-resources</phase>

  <phase>process-resources</phase>

  <phase>compile</phase>

  <phase>process-classes</phase>

  <phase>generate-test-sources</phase>

  <phase>process-test-sources</phase>

  <phase>generate-test-resources</phase>

  <phase>process-test-resources</phase>

  <phase>test-compile</phase>

  <phase>process-test-classes</phase>

  <phase>test</phase>

  <phase>prepare-package</phase>

  <phase>package</phase>

  <phase>pre-integration-test</phase>

  <phase>integration-test</phase>

  <phase>post-integration-test</phase>

  <phase>verify</phase>

  <phase>install</phase>

  <phase>deploy</phase>

</phases>

依照正常的逻辑， resources：resources会先于native2ascii:native2ascii将全部指定的resource文件进行filter处理之后放置于target文件夹下，之后native2ascii:native2ascii跟进。对指定的文件进行转码。这是很合理的处理方式，而我们的问题就出如今了对resources：resources第二次不正常的调用，这导致了之前经过转码的文件又被未经转码的文件覆盖了。从日志上看，导致resources：resources第二次运行的原因应该是在进入process-test-resources阶段后运行hbm2ddl触发的。也就是说是hbm2ddl的某个动作主动调用了resources：resources，至于详细的细节。是bug还是与maven3的兼容问题，这里我们不再深究，可是解决方法已经变得很清晰上，就是前文提到的做法。