/**
     * 返回視圖
     * @return
     */
    @RequestMapping("/re1")
    public String re1() {
        return "/test.html";
    }
    /**
     * 返回?cái)?shù)據(jù)
     * @return
     */
    @ResponseBody
    @RequestMapping("/re2")
    public String re2() {
        return "/test.html";
    }

@ResponseBody
    @RequestMapping(value = "/re7", produces = "application/json")
    public String re7() {
        return "{\"OK\": 1}";
    }

@RequestMapping("/r6")
    public String r6(@RequestParam(value = "wd", required = false, defaultValue = "000000") String keyword) {
        return "接收到參數(shù), keyword:" + keyword;
    }

@RequestMapping("/r8")
    public String r8(@RequestParam(required = false) List<String> list) {
        return list.toString();
    }

/**
     * 接收一個(gè)json字符串, 并把json字符串轉(zhuǎn)為Person對(duì)象
     * @param person
     * @return
     */
    @RequestMapping("/r9")
    public String r9(@RequestBody Person person) {
        return person.toString();
    }

/**
     *  獲取 URL 中的參數(shù)
     */
    @RequestMapping("/r10/{id}")
    public String r10(@PathVariable Integer id) {
        return "從 url 中獲取 id："+id;
    }

@RequestMapping("r11/{id}/{name}")
    public String r11(@PathVariable Integer id, @PathVariable("name") String userName) {
        return "解析參數(shù) id:" + id + ",name:" + userName;
    }

@RequestMapping("/r12")
    public String getfile(@RequestPart("file") MultipartFile file) throws IOException {
        // 獲取文件名稱
        String fileName = file.getOriginalFilename();
        System.out.println(fileName);
        //文件上傳
        file.transferTo(new File("D:\\AAA   Java/" + file.getOriginalFilename()));
        return "接收到文件名為：" + fileName;
    }

@RequestMapping("/getCookie2")
    public String getCookie2(@CookieValue("name") String name) {
        return "獲取 Cookie 成功, name:" + name;
    }

@RequestMapping("/getSession3")
    public String getSession3(@SessionAttribute("address") String address) {
        return "獲取 Session 成功, address:" + address;
    }

@RequestMapping("/getHeader2")
    public String getHeader2(@RequestHeader("User-Agent") String userAgent) {
        return "獲取header成功. userAgent:"+ userAgent;
    }