java.lang.reflect.InvocationTargetException_java.lang.reflect.invocationtargetexception at sun-优快云博客

本文链接：https://blog.youkuaiyun.com/codehxy/article/details/45845677

本文介绍了解决Android项目中因找不到sun.misc.BASE64Encoder和sun.misc.BASE64Decoder类而导致的问题的方法。提供了两种解决方案：对于Java项目，通过调整JRE设置来解决问题；对于Android项目，提供了一套替代的BASE64编解码实现。

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错误提示

java.lang.reflect.InvocationTargetException

java.lang.NoClassDefFoundError: sun.misc.BASE64Encoder

05-19 15:50:25.660: E/dalvikvm(20579): Could not find class 'sun.misc.BASE64Decoder', referenced from method com.wepay.pay.engine.util.CryptUtil.decryptBASE64

05-19 15:50:25.660: E/dalvikvm(20579): Could not find class 'sun.misc.BASE64Encoder', referenced from method com.wepay.pay.engine.util.CryptUtil.encryptBASE64
05-19 15:50:25.670: E/AndroidRuntime(20579): FATAL EXCEPTION: main
05-19 15:50:25.670: E/AndroidRuntime(20579): java.lang.IllegalStateException: Could not execute method of the activity
05-19 15:50:25.670: E/AndroidRuntime(20579): at android.view.View$1.onClick(View.java:3082)
05-19 15:50:25.670: E/AndroidRuntime(20579): at android.view.View.performClick(View.java:3549)
05-19 15:50:25.670: E/AndroidRuntime(20579): at android.view.View$PerformClick.run(View.java:14393)
05-19 15:50:25.670: E/AndroidRuntime(20579): at android.os.Handler.handleCallback(Handler.java:605)
05-19 15:50:25.670: E/AndroidRuntime(20579): at android.os.Handler.dispatchMessage(Handler.java:92)
05-19 15:50:25.670: E/AndroidRuntime(20579): at android.os.Looper.loop(Looper.java:154)
05-19 15:50:25.670: E/AndroidRuntime(20579): at android.app.ActivityThread.main(ActivityThread.java)
05-19 15:50:25.670: E/AndroidRuntime(20579): at java.lang.reflect.Method.invokeNative(Native Method)
05-19 15:50:25.670: E/AndroidRuntime(20579): at java.lang.reflect.Method.invoke(Method.java:511)
05-19 15:50:25.670: E/AndroidRuntime(20579): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784)
05-19 15:50:25.670: E/AndroidRuntime(20579): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551)
05-19 15:50:25.670: E/AndroidRuntime(20579): at dalvik.system.NativeStart.main(Native Method)
05-19 15:50:25.670: E/AndroidRuntime(20579): Caused by: java.lang.reflect.InvocationTargetException
05-19 15:50:25.670: E/AndroidRuntime(20579): at java.lang.reflect.Method.invokeNative(Native Method)
05-19 15:50:25.670: E/AndroidRuntime(20579): at java.lang.reflect.Method.invoke(Method.java:511)
05-19 15:50:25.670: E/AndroidRuntime(20579): at android.view.View$1.onClick(View.java:3077)
05-19 15:50:25.670: E/AndroidRuntime(20579): ... 11 more
05-19 15:50:25.670: E/AndroidRuntime(20579): Caused by: java.lang.NoClassDefFoundError: sun.misc.BASE64Encoder
05-19 15:50:25.670: E/AndroidRuntime(20579): at com.wepay.pay.engine.util.CryptUtil.encryptBASE64(CryptUtil.java:71)
05-19 15:50:25.670: E/AndroidRuntime(20579): at com.test.demo.MainActivity.test(MainActivity.java:34)

05-19 15:50:25.670: E/AndroidRuntime(20579):... 14 more

1,java项目解决方案

选中工程，右键，java build path,add library，添加jre system library，然后展开jre ，双击accessble rules，点击add，下拉选accessble rules，输入**。

2,android项目解决方案

android无法使用sun.misc.BASE64Decoder,只需要将jre中sun.misc.BASE64Decoder的文件拷贝到项目中使用就可以

将以下java文件放到你的工程就可以了BASE64Decoder.java
BASE64Encoder.java
CEFormatException.java
CEStreamExhausted.java
CharacterDecoder.java
CharacterEncoder.java
这些文件可以直接下载,我已经整理好.

下载地址:http://download.youkuaiyun.com/detail/codehxy/8717021