Codenameone：在构建期间无法找到包

Question

When I build my application I get following errors. Can you please let me know how to resolve it. My application needs to be supported on all platforms (Andriod, IOS, windows) and I don't want to write native code for all platforms separately. 

java:4: error: package java.lang.reflect does not exist
        import java.lang.reflect.UndeclaredThrowableException;
java:6: error: package javax.crypto does not exist
        import javax.crypto.Mac;
             ^
7: error: package javax.crypto.spec does not exist
       import javax.crypto.spec.SecretKeySpec;
java:48: error: cannot find symbol Mac hmac;
50: error: cannot find symbol
       [javac]              hmac = Mac.getInstance(crypto);

^ java:53: 错误: 找不到符号 [javac] SecretKeySpec macKey = ^ [javac] 符号：class SecretKeySpec [javac] 位置：class TokenGenerator java:55：错误：找不到符号 [javac] new SecretKeySpec(keyBytes, "RAW"); ^ [javac] 符号：class SecretKeySpec [javac] 位置：class TokenGenerator java:61: 错误: 找不到符号 [javac] } catch (GeneralSecurityException gse) { [javac] ^ java:63：错误：找不到符号 [javac] 抛出新的 UndeclaredThrowableException(gse); [javac] ^ 符号：class UndeclaredThrowableException [javac] 位置：class TokenGenerator

Answer 1

代号一不支持这些包。反射不能在设备上以高效的方式实现，一般不应使用，因为它与混淆是移动设备推荐的最佳实践。

Crypto 是一个设计过度的大型软件包，具有导出限制和反射依赖性。我们有充气城堡的 cn1lib 扩展。

Codenameone：在构建期间无法找到包

Codenameone: Unable to find packages during build

codenameone