在spring MVC的controller中获取ServletConfig

在使用SmartUpload进行文件上传时，需要用到srevletConfig:

如果是在servlet中写当然是很容易实现的：

        private ServletConfig config;
	//初始化Servlet
	final public void init(ServletConfig config)
			throws ServletException{
		this.config=config;
	}

init方法会在servlet初始化时获取到servletConfig.

但是在Controller中怎么获得呢？经过小编多方请教，可以通过继承ServletConfigAware,ServletContextAware这两个接口来实现：

package module.system.controller;

import java.io.IOException;

import javax.servlet.ServletConfig;
import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import module.system.common.FileLoad;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.context.ServletConfigAware;
import org.springframework.web.context.ServletContextAware;
/**
 * 文件上传下载.
 *
 */
@Controller
@RequestMapping("/fileLoad")
public class FileLoadController implements ServletConfigAware,ServletContextAware{

	private ServletContext servletContext;
	@Override
	public void setServletContext(ServletContext arg0) {
		this.servletContext = arg0;
	}
    private ServletConfig servletConfig;
	@Override
	public void setServletConfig(ServletConfig arg0) {
        this.servletConfig = arg0;
	}

	@RequestMapping(value = "/upload.do", method = RequestMethod.POST)
	@ResponseBody  //此注解表明返回值跳过视图处理部分，直接写入 http response body中
	public String upload(HttpServletRequest request,HttpServletResponse response) {

		FileLoad fileLoad = new FileLoad();
		try {
			fileLoad.upload(request, response,servletConfig);
		} catch (ServletException e) {
			e.printStackTrace();
		} catch (IOException e) {
			e.printStackTrace();
		}
		return "";
	}

}

里边这个upload方法是另外写的一个方法，将会在下一篇文章中介绍。通过这样就可以得到servletConfig了