MyResponseBodyAdvice.java

package com.github.zhangkaitao.web.controller;

import com.github.zhangkaitao.web.model.User;
import org.springframework.core.MethodParameter;
import org.springframework.core.annotation.Order;
import org.springframework.http.MediaType;
import org.springframework.http.converter.HttpMessageConverter;
import org.springframework.http.converter.json.MappingJackson2HttpMessageConverter;
import org.springframework.http.server.ServerHttpRequest;
import org.springframework.http.server.ServerHttpResponse;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.web.bind.annotation.ControllerAdvice;
import org.springframework.web.servlet.mvc.method.annotation.ResponseBodyAdvice;

/**
 * User: zhangkaitao
 * Date: 14-8-4
 * Time: ����8:37
 * Version: 1.0
 */
@Order(1)
@ControllerAdvice(basePackages = "com.github")
public class MyResponseBodyAdvice implements ResponseBodyAdvice<Object> {

    @Override
    public boolean supports(MethodParameter methodParameter, Class<? extends HttpMessageConverter<?>> converterType) {
        return methodParameter.getMethod().getReturnType().isAssignableFrom(User.class);
    }

    @Override
    public Object beforeBodyWrite(
            Object obj, MethodParameter methodParameter, MediaType mediaType,
            Class<? extends HttpMessageConverter<?>> converterType,
            ServerHttpRequest serverHttpRequest, ServerHttpResponse serverHttpResponse) {

        User user = ((User)obj);
        user.setName("---" + user.getName() + "---");
        return user;
    }
}