Illegal class literal for the type parameter T错误解决方法
出现错误的代码如下：

public class ModServiceFinderImpl<Module> extends BaseFinderImpl<Module> implements ModServiceFinder<Module>{public PageView<Module> findByModid(String modid, int pageNo, int pageSize ) {PageView<Module> pv = new PageView<Module>();if(modid != null && !"".equals(modid)) {pv = super.findByPage(Module.class,"from Module m where m.isShow=1 and m.parent.mod_id=" + modid, pageNo, pageSize);}else {pv = super.findByPage(Module.class, "from Module m where m.isShow=1",pageNo, pageSize);}return pv;}}

错误信息：Illegal class literal for the type parameter Module

解决方法：将类ModServiceFinderImpl<Module>后的泛型参数去掉

修改后的代码：

public class ModServiceFinderImpl extends BaseFinderImpl<Module> implements ModServiceFinder<Module>{public PageView<Module> findByModid(String modid, int pageNo, int pageSize ) {PageView<Module> pv = new PageView<Module>();if(modid != null && !"".equals(modid)) {pv = super.findByPage(Module.class,"from Module m where m.isShow=1 and m.parent.mod_id=" + modid, pageNo, pageSize);}else {pv = super.findByPage(Module.class, "from Module m where m.isShow=1",pageNo, pageSize);}return pv;}}

总结：这个问题与网络上得另一个问题相同：
问题：Hi all,
I'm creating a generic class and in one of the methods I need to know the Class of the generic type currently in use. The reason is that one of the method's I call expects this as an argument.

Example:public class MyGenericClass<T> {  public void doSomething() {    // Snip...    // Call to a 3rd party lib    T bean = (T)someObject.create(T.class);    // Snip...  }}

Clearly the example above doesn't work and results in the following error: Illegal class literal for the type parameter T.
My question is: does someone know a good alternative or workaround for this?

解决方法：
Still the same problems : Generic informations are erased at runtime, it cannot be recovered. A workaround is to pass the class T in parameter of a static method :

public class MyGenericClass<T> {    private final Class<T> clazz;    public static <U> MyGenericClass<U> createMyGeneric(Class<U> clazz) {        return new MyGenericClass<U>(clazz);    }    protected MyGenericClass(Class<T> clazz) {        this.clazz = clazz;    }    public void doSomething() {        T instance = clazz.newInstance();    }}

It's ugly, but it works.

注：对泛型的讲解可产考：http://www.infoq.com/cn/articles/cf-java-generics