学步园

来源：http://www.bitsandpix.com/entry/spring-error-cannot-convert-value-of-type-proxy-to-required-type

In Spring, if you get an error like:

Error Cannot convert value of type [$Proxy...] to required type

It might be because you are using Spring AOP (e.g., @transactional annotations) with “interface-proxy” mode (the Default) rather than “class-proxy” mode. To setup “class-proxy” do the following:

1. Copy aspectjweaver.jar and aspectjrt.jar to your Web application classpath (you can find these files in the Spring Distribution/lib/aspectj
2. Add the following in the your app context xml:
   <aop:config proxy-target-class=”true”/>

See also:

• Spring Forum: Spring Proxy exception