package com.jadyer.controller;

import java.io.File;
import java.io.IOException;
import java.util.HashMap;
import java.util.Map;

import javax.servlet.http.HttpServletRequest;

import org.apache.commons.io.FileUtils;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.multipart.MultipartFile;

import com.jadyer.model.User;

@Controller
@RequestMapping("/user")
public class UserController {
	private final static Map<String, User> users = new HashMap<String, User>();

	// 模拟数据源,构造初始数据
	public UserController() {
		users.put("张起灵", new User("张起灵", "闷油瓶", "02200059",
				"menyouping@yeah.net"));
		users.put("李寻欢", new User("李寻欢", "李探花", "08866659",
				"lixunhuan@gulong.cn"));
		users.put("拓拔野", new User("拓拔野", "搜神记", "05577759",
				"tuobaye@manhuang.cc"));
		users.put("孙悟空", new User("孙悟空", "美猴王", "03311159",
				"sunhouzi@xiyouji.zh"));
	}

	@RequestMapping("/list")
	public String list(Model model) {
		model.addAttribute("users", users);
		return "user/list";
	}

	@RequestMapping(value = "/add", method = RequestMethod.GET)
	public String addUser() {
		return "user/add";
	}

	@RequestMapping(value = "/add", method = RequestMethod.POST)
	public String addUser(User user, @RequestParam MultipartFile[] myfiles,
			HttpServletRequest request) throws IOException {
		// 如果只是上传一个文件，则只需要MultipartFile类型接收文件即可，而且无需显式指定@RequestParam注解
		// 如果想上传多个文件，那么这里就要用MultipartFile[]类型来接收文件，并且还要指定@RequestParam注解
		// 并且上传多个文件时，前台表单中的所有<input
		// type="file"/>的name都应该是myfiles，否则参数里的myfiles无法获取到所有上传的文件
		for (MultipartFile myfile : myfiles) {
			// if (myfile.isEmpty()) {
			// System.out.println("文件未上传");
			// } else {
			System.out.println("文件长度: " + myfile.getSize());
			System.out.println("文件类型: " + myfile.getContentType());
			System.out.println("文件名称: " + myfile.getName());
			System.out.println("文件原名: " + myfile.getOriginalFilename());
			System.out.println("========================================");
			// 如果用的是Tomcat服务器，则文件会上传到\\%TOMCAT_HOME%\\webapps\\YourWebProject\\WEB-INF\\upload\\文件夹中
			// 这里不必处理IO流关闭的问题，因为FileUtils.copyInputStreamToFile()方法内部会自动把用到的IO流关掉，我是看它的源码才知道的
			// String realPath =
			// request.getSession().getServletContext().getRealPath("/FileTest/WebContent/WEB-INF/upload");
			String realPath = request.getSession().getServletContext()
					.getRealPath("/WEB-INF/upload");
			System.out.println(realPath);

			FileUtils.copyInputStreamToFile(myfile.getInputStream(), new File(
					realPath, myfile.getOriginalFilename()));
			// }
		}
		users.put(user.getUsername(), user);
		return "redirect:/user/list";
	}
}