Question

如何从javamail中获取.jar文件？

我正在使用intelliJ IDEA IDE并尝试去项目结构 - 库 - 添加 - 找到.jar文件并保存。然后我去模块并检查导出下的框，因为我也检查了用于片段等的支持库。

我使用了来自Sending Email in Android using JavaMail API without using the default/built-in app的代码，但没有运气。

我尝试完整地使用.jar文件以及提取后但都失败了同样的错误。

在代码的编辑模式下，我没有收到错误，只有在编译时，gradle构建失败并向我显示错误，“错误（3,6）：Gradle：错误：包javax.mail不存在请帮帮忙！

我也尝试按照How can I use external JARs in an Android project?的说明操作，但我认为这些指示与eclipse IDE有关。

edt：gradle-build：

Information:Compilation completed with 25 errors and 0 warnings in 25 sec
Information:25 errors
Information:0 warnings
Error:Gradle: Execution failed for task ':app:compileDebugJava'.

编译失败;请参阅编译器错误输出以获取详细信 C：\用户\马库斯\文件\ IdeaProjects \的Android \ TestProjects \ TestMailFeature3 \应用\ SRC \主\的java \ COM \ majorwit \ testmailfeature3 \应用\ GMailSender.java

Error:(3, 24) Gradle: error: package javax.activation does not exist

Error:(4, 24) Gradle: error: package javax.activation does not exist

Error:(5, 18) Gradle: error: package javax.mail does not exist

Error:(6, 18) Gradle: error: package javax.mail does not exist

Error:(7, 18) Gradle: error: package javax.mail does not exist

Error:(8, 18) Gradle: error: package javax.mail does not exist

Error:(9, 27) Gradle: error: package javax.mail.internet does not exist

Error:(10, 27) Gradle: error: package javax.mail.internet does not exist

Error:(18, 44) Gradle: error: package javax.mail does not exist

Error:(22, 13) Gradle: error: cannot find symbol class Session

Error:(46, 15) Gradle: error: cannot find symbol class PasswordAuthentication

Error:(67, 49) Gradle: error: cannot find symbol class DataSource    

Error:(43, 19) Gradle: error: cannot find symbol variable Session

Error:(47, 20) Gradle: error: cannot find symbol class PasswordAuthentication

Error:(52, 13) Gradle: error: cannot find symbol class MimeMessage

Error:(52, 39) Gradle: error: cannot find symbol class MimeMessage

Error:(53, 13) Gradle: error: cannot find symbol class DataHandler

Error:(53, 39) Gradle: error: cannot find symbol class DataHandler

Error:(54, 35) Gradle: error: cannot find symbol class InternetAddress

Error:(58, 46) Gradle: error: package Message does not exist

Error:(58, 65) Gradle: error: cannot find symbol variable InternetAddress

Error:(60, 45) Gradle: error: package Message does not exist

Error:(60, 68) Gradle: error: cannot find symbol class InternetAddress

Error:(61, 13) Gradle: error: cannot find symbol variable Transport

Answer 1

The javax.activation and javax.mail packages are not part of the standard android packages (http://developer.android.com/reference/packages.html).

Fortunately an Android version has of JavaMail been released (https://java.net/projects/javamail/pages/Android). I followed the suggestion of modifying the build.gradle file for my project in Android Studio and was able to successfully compile without having to manually download any jar files.

<?php
    //assign your value   
    $value = true;
?>

<input id="value" type="hidden" value="<?php if ($value) { echo 'true'; } ?>" />

   <script>
       var value = document.getElementById('value').value;
       if (value) {
          alert(value);
        }
    </script>

Answer 2

我将以下内容添加到我的build.gradle（Module：app）文件中，并且编译时没有错误。

dependencies {
    //other dependencies here...
    compile 'com.sun.mail:android-mail:1.5.5'
    compile 'com.sun.mail:android-activation:1.5.5'
    testCompile 'junit:junit:4.12'
}
apply plugin: 'com.google.gms.google-services'

一个区别在于我的情况是一个Android项目。

错误：Gradle：错误：包javax.mail不存在

2 个答案: