@RequestMapping(value = "user/uploadUserHeadImage", method = RequestMethod.POST, produces = "application/json;charset=utf-8")
public  String uploadUserHeadImage(@RequestParam MultipartFile file, HttpSession session
){
    String originalFileName = file.getOriginalFilename();
    logger.info("获取图片原始文件名：{}", originalFileName);
    String extension = originalFileName.substring(originalFileName.lastIndexOf('.'));
    String fileName = UUID.randomUUID() + extension;
    String filePath = session.getServletContext().getRealPath("/") + "res/images/item/userProfilePicture/" + fileName;
    logger.info("文件上传路径：{}", filePath);
    JSONObject jsonObject = new JSONObject();
    try {
        logger.info("文件上传中...");
        file.transferTo(new File(filePath));
        logger.info("文件上传成功！");
        jsonObject.put("success", true);
        jsonObject.put("fileName", fileName);
    } catch (IOException e) {
        logger.warn("文件上传失败！");
        e.printStackTrace();
        jsonObject.put("success", false);
    }
    return jsonObject.toJSONString();
}

@ResponseBody
@RequestMapping(value = "admin/uploadProductImage", method = RequestMethod.POST, produces = "application/json;charset=utf-8")
public String uploadProductImage(@RequestParam MultipartFile file, @RequestParam String imageType, HttpSession session) {
    String originalFileName = file.getOriginalFilename();
    logger.info("获取图片原始文件名：{}", originalFileName);
    String extension = originalFileName.substring(originalFileName.lastIndexOf('.'));
    String filePath;
    String fileName = UUID.randomUUID() + extension;
    if ("single".equals(imageType)) {
        filePath = session.getServletContext().getRealPath("/") + "res/images/item/productSinglePicture/" + fileName;
    } else {
        filePath = session.getServletContext().getRealPath("/") + "res/images/item/productDetailsPicture/" + fileName;
    }

    logger.info("文件上传路径：{}", filePath);
    JSONObject object = new JSONObject();
    try {
        logger.info("文件上传中...");
        file.transferTo(new File(filePath));
        logger.info("文件上传完成");
        object.put("success", true);
        object.put("fileName", fileName);
    } catch (IOException e) {
        logger.warn("文件上传失败！");
        e.printStackTrace();
        object.put("success", false);
    }
    return object.toJSONString();
}

package com.xq.tmall.controller;

import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;

import javax.servlet.http.HttpSession;

/**
 * 基控制器
 */
public class BaseController {
    //log4j
    protected Logger logger = LogManager.getLogger(LogManager.ROOT_LOGGER_NAME);

    //检查管理员权限
    protected Object checkAdmin(HttpSession session){
        Object o = session.getAttribute("adminId");
        if(o==null){
            logger.info("无管理权限，返回管理员登陆页");
            return null;
        }
        logger.info("权限验证成功，管理员ID：{}",o);
        return o;
    }

    //检查用户是否登录
    protected Object checkUser(HttpSession session){
        Object o = session.getAttribute("userId");
        if(o==null){
            logger.info("用户未登录");
            return null;
        }
        logger.info("用户已登录，用户ID：{}", o);
        return o;
    }
}

@ResponseBody
@RequestMapping(value = "admin/productImage/{productImage_id}",method = RequestMethod.DELETE,produces = "application/json;charset=utf-8")
public String deleteProductImageById(@PathVariable Integer productImage_id/* 产品图片ID */){
    JSONObject object = new JSONObject();
    logger.info("获取productImage_id为{}的产品图片信息",productImage_id);
    ProductImage productImage = productImageService.get(productImage_id);

    logger.info("删除产品图片");
    Boolean yn = productImageService.deleteList(new Integer[]{productImage_id});
    if (yn) {
        logger.info("删除图片成功！");
        object.put("success", true);
    } else {
        logger.warn("删除图片失败！事务回滚");
        object.put("success", false);
        throw new RuntimeException();
    }
    return object.toJSONString();
}

@ResponseBody
@RequestMapping(value = "admin/category/{category_id}", method = RequestMethod.PUT, produces = "application/json;charset=utf-8")
public String updateCategory(@RequestParam String category_name/* 分类名称 */,
                             @RequestParam String category_image_src/* 分类图片路径 */,
                             @PathVariable("category_id") Integer category_id/* 分类ID */) {
    JSONObject jsonObject = new JSONObject();
    logger.info("整合分类信息");
    Category category = new Category()
            .setCategory_id(category_id)
            .setCategory_name(category_name)
            .setCategory_image_src(category_image_src.substring(category_image_src.lastIndexOf("/") + 1));
    logger.info("更新分类信息，分类ID值为：{}", category_id);
    boolean yn = categoryService.update(category);
    if (yn) {
        logger.info("更新成功！");
        jsonObject.put("success", true);
        jsonObject.put("category_id", category_id);
    } else {
        jsonObject.put("success", false);
        logger.info("更新失败！事务回滚");
        throw new RuntimeException();
    }

    return jsonObject.toJSONString();
}

    @ResponseBody
    @RequestMapping(value = "admin/user/{index}/{count}", method = RequestMethod.GET, produces = "application/json;charset=UTF-8")
    public String getUserBySearch(@RequestParam(required = false) String user_name/* 用户名称 */,
                                  @RequestParam(required = false) Byte[] user_gender_array/* 用户性别数组 */,
                                  @RequestParam(required = false) String orderBy/* 排序字段 */,
                                  @RequestParam(required = false, defaultValue = "true") Boolean isDesc/* 是否倒序 */,
                                  @PathVariable Integer index/* 页数 */,
                                  @PathVariable Integer count/* 行数 */) throws UnsupportedEncodingException {
        //移除不必要条件
        Byte gender = null;
        if (user_gender_array != null && user_gender_array.length == 1) {
            gender = user_gender_array[0];
        }

        if (user_name != null) {
            //如果为非空字符串则解决中文乱码：URLDecoder.decode(String,"UTF-8");
            user_name = "".equals(user_name) ? null : URLDecoder.decode(user_name, "UTF-8");
        }
        if (orderBy != null && "".equals(orderBy)) {
            orderBy = null;
        }
..........