Tomcat Java编译器差异 [英] Tomcat Java Compiler difference

问题描述

我有两台tomcat 5.5服务器.一是发展，一是生产.两者都在Java 1.6上运行.但是最近我遇到了一个问题，即泛型无法在生产环境中运行，但在开发中可以顺利运行.这两个系统之间的区别在tomcat 5.5/common/lib/中.我的开发环境包含ecj-3.7.2.jar，但是生产环境中没有此文件，而是包含jasper-compiler-jdt.jar.

当我用ecj-3.7.2.jar替换jasper-compiler-jdt.jar时，泛型工作正常.据我了解，这些是Eclipse的JDT编译器库，我能知道这个问题的区别和原因.非常感谢！

jasper-compiler-jdt.jar和ecj-3.7.2.jar之间的区别是ecj是64位Java 1.6.41的编译器，而后者是32位Java 1.6.19的编译器.即使两个编译器均来自Java 1.6，jasper-compiler-jdt.jar也不支持ecj.jar这样的泛型.

I have two tomcat 5.5 servers. One is for development and one is Production. Both runs on Java 1.6. But recently I had a problem where generics are unable to run on the Production environment but runs smoothly on development. The difference between these two system are in tomcat 5.5/common/lib/. My development envr contains ecj-3.7.2.jar but the production doesn't have this file instead it contains jasper-compiler-jdt.jar.

When I replace jasper-compiler-jdt.jar with ecj-3.7.2.jar , the generics works fine. From my understanding, these are the Eclipse's JDT Compiler libraries, can i know what is the difference and the cause of this problem. Thanks a lot!

解决方案

The difference between jasper-compiler-jdt.jar and ecj-3.7.2.jar is ecj is the compiler for 64bit Java 1.6.41 and the latter is for 32bit Java 1.6.19. Even though both compiler is from Java 1.6, jasper-compiler-jdt.jar couldn't support generics like ecj.jar do.

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