linux上传头像问题，本地测试OK，部署后无效

在windows本地Tomcat部署项目后跑起来可以成功上传头像并显示，但是在linux上没效果
根本没有进去action，所以图片也没有保存到服务器，头像为空

 <div>请上传新头像:
                <form target="dis" enctype="multipart/form-data" method="post" id="uploadForm" action="${pageContext.request.contextPath}/main/uploadImg.do">
                    <img width="100px" style="display: none;" class="img">
                    <input type="file" class="imgFilea" name="file" id="file"/>
                    <input type="submit" class="imgFile" value="确认提交" onclick="resetPage()"/>
                </form>
            </div> 

controller:

@RequestMapping(value="/uploadImg.do",method=RequestMethod.POST)
    @ResponseBody
    public String uploadImg(HttpServletRequest req,HttpSession session,MultipartFile file){
        RetParam param = new RetParam(); 
        String path = null;
        try {
            User user = (User) session.getAttribute("user");
            if(user==null){
                throw new Exception("用户不存在！");
            }
            if(file==null){
                throw new Exception("文件读取失败！");
            }
            int pointValue = file.getOriginalFilename().lastIndexOf(".");
            String imgType = file.getOriginalFilename().substring(pointValue+1,file.getOriginalFilename().length());                //
            //判断图片类型
            if(imgType.equals("png")||imgType.equals("jpg")||imgType.equals("gif")){
                String name = new Date().getTime()+"."+imgType;
                String headPath = "fileupload/headimg/"+name;

                //保存图片到服务器
                URL url = session.getServletContext().getResource("fileupload/headimg/");
                path = url.getPath();
                ImgUtils.saveFile(path, "text.txt","hhhh");
                ImgUtils.saveImg(path,name,file);

                //保存用户头像路径到数据库
                UserParam userParam = new UserParam();
                userParam.setId(user.getId());
                userParam.setHeadPath(headPath);
                userService.updateUser(userParam);
                User upUser = userService.queryUserByName(userParam);
                session.setAttribute("user", upUser);
                param.setRetCode(RetParam.SUCCESS);
            }else{
                throw new Exception("图片格式错误！");
            }
        } catch (Exception e) {
            param.setRetData(e.getMessage());
            param.setRetCode(RetParam.FAULT);
            try {
                ImgUtils.saveFile(path, "test.txt",e.getMessage()+"");
            } catch (Exception e1) {
            }
        }
        return JSONObject.fromObject(param).toString();
    }  

你可以看一下保存的路径。 wondows的路径和linux的路径是不一样的。

如果都没有进去action建议查看是不是没有启动应用 或者tomcat有没有加载应用

action代码:

@RequestMapping(value="/uploadImg.do",method=RequestMethod.POST)
    @ResponseBody
    public String uploadImg(HttpServletRequest req,HttpSession session,MultipartFile file){
        RetParam param = new RetParam(); 
        String path = null;
        try {
            User user = (User) session.getAttribute("user");
            if(user==null){
                throw new Exception("用户不存在！");
            }
            if(file==null){
                throw new Exception("文件读取失败！");
            }
            int pointValue = file.getOriginalFilename().lastIndexOf(".");
            String imgType = file.getOriginalFilename().substring(pointValue+1,file.getOriginalFilename().length());                //
            //判断图片类型
            if(imgType.equals("png")||imgType.equals("jpg")||imgType.equals("gif")){
                String name = new Date().getTime()+"."+imgType;
                String headPath = "fileupload/headimg/"+name;

                //保存图片到服务器
                URL url = session.getServletContext().getResource("fileupload/headimg/");
                path = url.getPath();
                ImgUtils.saveFile(path, "text.txt","hhhh");
                ImgUtils.saveImg(path,name,file);

                //保存用户头像路径到数据库
                UserParam userParam = new UserParam();
                userParam.setId(user.getId());
                userParam.setHeadPath(headPath);
                userService.updateUser(userParam);
                User upUser = userService.queryUserByName(userParam);
                session.setAttribute("user", upUser);
                param.setRetCode(RetParam.SUCCESS);
            }else{
                throw new Exception("图片格式错误！");
            }
        } catch (Exception e) {
            param.setRetData(e.getMessage());
            param.setRetCode(RetParam.FAULT);
            try {
                ImgUtils.saveFile(path, "test.txt",e.getMessage()+"");
            } catch (Exception e1) {
            }
        }
        return JSONObject.fromObject(param).toString();
    } 

这是页面代码，贴出来看下：

请上传新头像:

        js代码：function resetPage(){
    if($('.imgFilea').val()==null||$('.imgFilea').val()==''){
        alert('请先选择要上传图片！');
        return false;
    }
    var types = $('.imgFilea').val().split('.');
    console.log(types[types.length-1]);
    if(types[types.length-1]=="jpg"||types[types.length-1]=="png"){
        alert("修改成功！");
        window.location.href="${pageContext.request.contextPath}/main/toIndex.do";
    }else{
        alert("格式错误！");
    }
}

 <div>请上传新头像:
                <form target="dis" enctype="multipart/form-data" method="post" id="uploadForm" action="${pageContext.request.contextPath}/main/uploadImg.do">
                    <img width="100px" style="display: none;" class="img">
                    <input type="file" class="imgFilea" name="file" id="file"/>
                    <input type="submit" class="imgFile" value="确认提交" onclick="resetPage()"/>
                </form>
            </div>