@ResponseBody @RequestMapping("upload") public JSONObject upload(@RequestBody MultipartFile file, HttpServletRequest request) throws Exception { String oldFileName=file.getOriginalFilename(); String newFileName= UUID.randomUUID().toString()+oldFileName.substring(oldFileName.indexOf("."),oldFileName.length()); String path=request.getSession().getServletContext().getRealPath("/static")+ File.separator+newFileName; File file1=new File(path); if (!file1.isDirectory()){ file1.mkdirs(); } file.transferTo(file1); JSONObject resObj = new JSONObject(); resObj.put("code", "0"); resObj.put("msg", "上传成功"); resObj.put("src", newFileName); return resObj; }

SpringMVC中@ResponseBody与@RequestBody解决json嵌套问题

在Spring MVC框架中，注解@ResponseBody和@RequestBody是两个重要的工具，用于简化前后端之间的JSON数据传输和处理。这两个注解主要与JSON数据的序列化和反序列化相关，对于提升开发效率和减少代码重复有着显著...

SpringMVC注解深度解析：@Controller与@RequestMapping

"本文将详细解析Spring MVC中的注解，特别是@Controller和@RequestMapping，以及它们在构建Web应用程序中的作用。" Spring MVC是一个强大的Java框架，用于构建Web应用程序，它使用注解来简化控制器类的定义和请求...

@RequestMapping(value = "/upload", method = RequestMethod.POST) @ResponseBody public JsonResult upload(@RequestParam("file")MultipartFile file, @RequestParam("key")String key, HttpSession session){ Map<String,String> map = new HashMap<>(); try { map = FileUtil.upload(file); } catch (Exception e) { e.printStackTrace(); return JsonResult.error("上传失败"); }

这段代码是一个基于SpringMVC的文件上传接口。请求方法为POST，接收两个参数：...其中，调用了FileUtil.upload()方法来处理上传的文件，并将处理后的结果存储在一个Map对象中。如果上传失败，则返回一个错误提示信息。

@RequestMapping(value = "/uploadWxImg", method = RequestMethod.POST) public @ResponseBody Object uploadWxImg(@RequestParam("img") MultipartFile file, HttpServletRequest request) throws IllegalStateException, IOException { Map<String, Object> map = new HashMap<String, Object>(); String name = file.getOriginalFilename(); String imgAbsolutePath = MyTool.SaveImg(file, MyTool.getImg(), name); map.put("code", 0); map.put("message", "上传成功"); map.put("data", name); System.out.println(map.toString()); return map; }

这段代码是一个基于SpringMVC框架的文件上传接口，使用POST方法接收MultipartFile类型的文件参数。其中@RequestParam注解用于指定上传文件的参数名。接口会将上传的文件保存到服务器指定的目录下，并返回一个包含...

@Controller @RequestMapping(value = "/JzAtlas") @Api(tags = {"建筑--图册--操作接口"}) public class JzAtlasAction { @Resource private JzAtlasService service; @ApiOperation(value = "查询单个项目", notes = "项目主键ID") //@RequestMapping(value = "/findByKey", method = {RequestMethod.GET}, produces = "application/json; charset=UTF-8") @RequestMapping(value = "/findByKey", method = {RequestMethod.GET}) @ResponseBody public Object findByKey(Integer id) { return service.findById(id); } @ApiOperation(value = "保存单个项目信息", notes = "传递数据") @RequestMapping(value = "/save", method = {RequestMethod.POST}) @ResponseBody public Object save(@RequestBody JzAtlas model) { return service.save(model); } @ApiOperation(value = "更新单个项目信息", notes = "传递数据") @RequestMapping(value = "/update", method = {RequestMethod.POST}) @ResponseBody public Object update(@RequestBody JzAtlas model) { return service.update(model); } @ApiOperation(value = "查询所有", notes = "无查询条件") @RequestMapping(value = "/findAllList", method = {RequestMethod.POST}) @ResponseBody public Object findList() { return service.findList(); } @ApiOperation(value = "根据条件查询", notes = "查询参数") @RequestMapping(value = "/findList", method = {RequestMethod.POST}) @ResponseBody public Object findListByQuery(@RequestBody JzAtlasRequest requestModel) { return service.findListByQuery(requestModel); } @ApiOperation(value = "删除单个项目信息", notes = "项目主键ID") @RequestMapping(value = "/delete", method = {RequestMethod.POST}) @ResponseBody public Object delete(Integer id) { return service.delete(id); } }

通过@RequestMapping注解指定了处理请求的URL路径为"/JzAtlas"。@Api注解用于生成API文档，其中的tags属性指定了文档中的标签为"建筑--图册--操作接口"。该类中包含了多个处理请求的方法，使用了不同的请求方法...

@RequestMapping("/Sysn/BorrowRecord") @ResponseBody public com.sysdao.model.ResultModel sysnBorrowRecord(@RequestBody MultipartFile file){ com.sysdao.model.ResultModel resultModel = new com.sysdao.model.ResultModel(); try { InputStream inputStream = file.getInputStream(); POIFSFileSystem poifsFileSystem = new POIFSFileSystem(inputStream); XSSFWorkbook sheets = new XSSFWorkbook (poifsFileSystem); XSSFSheet sheetAt = sheets.getSheetAt(0); XSSFRow row = sheetAt.getRow(1); XSSFCell cell = row.getCell(2); String stringCellValue = cell.getStringCellValue(); System.out.println(stringCellValue); resultModel.setResult(com.sysdao.model.ResultModel.SUCCESS); }catch (Exception e){ resultModel.setResult(com.sysdao.model.ResultModel.UNKNOWN,e.toString()); } return resultModel; }有什么bug

这段代码并没有明显的 bug，但也有一些需要注意的地方： 1. 需要对上传的文件进行类型判断，防止恶意文件上传。 2. 可以对文件大小进行限制，避免上传过大的文件导致服务器负载过高。 3. 读取 Excel 文件时，应该...

@RequestMapping("/upload") @ResponseBody public String upload(HttpServletRequest request){ MultipartHttpServletRequest params=((MultipartHttpServletRequest) request); String name = params.getParameter("name"); MultipartFile file = params.getFile("file"); if(name == null || name.length()==0){ return new Result(false,null,"模板名称未填写！").toString(); }else if(file.isEmpty()){ return new Result(false,null,"模板文件未选择！").toString(); } int num = docService.upload(name,file); if(num != 1){ return new Result(false,null,"模板文件上传失败！").toString(); } return new Result(true,null,"模板文件上传成功！").toString(); } @RequestMapping("/update") @ResponseBody public String update(HttpServletRequest request){ MultipartHttpServletRequest params=((MultipartHttpServletRequest) request); Integer userId = Integer.valueOf(params.getParameter("id")); String name = params.getParameter("name"); MultipartFile file = params.getFile("file"); if(name == null || name.length()==0){ return new Result(false,null,"模板名称未填写！").toString(); }else if(file.isEmpty()){ return new Result(false,null,"模板文件未选择！").toString(); } int num = docService.update(userId,name,file); if(num != 1){ return new Result(false,null,"模板文件修改失败！").toString(); } return new Result(true,null,"模板文件修改成功！").toString(); }

其中@RequestMapping("/upload")和@RequestMapping("/update")分别是处理上传和更新请求的方法，返回值为JSON格式的字符串。在上传和更新过程中，通过MultipartHttpServletRequest对象获取请求中的文件和其他参数，...

@Controller public class ImageController { @RequestMapping("/uploadImage") @ResponseBody public String uploadImage(HttpServletRequest request) throws IOException { MultipartHttpServletRequest multipartRequest = (MultipartHttpServletRequest) request; MultipartFile file = multipartRequest.getFile("file"); //保存文件到本地磁盘 String fileName = file.getOriginalFilename(); String suffix = fileName.substring(fileName.lastIndexOf(".") + 1); // String filePath = "F:/upload/"; String filePath = "D:/ideaprojects/SSM/BookShopSystem/src/main/webapp/static/img/"; String newFileName = UUID.randomUUID().toString() + "." + suffix; File dest = new File(filePath + newFileName); if (!dest.getParentFile().exists()) { dest.getParentFile().mkdirs(); } file.transferTo(dest); //返回文件访问路径 String url = "http://localhost:8080/BookShopSystem_war/static/img/" + newFileName; System.out.println("url:"+url); return "{\"code\":0,\"msg\":\"\",\"data\":{\"src\":\"" + url + "\"}}"; } }

其中，@Controller 注解表示该类是一个控制器，@RequestMapping("/uploadImage") 注解指定了处理上传图片请求的 URL 地址。@ResponseBody 注解表示该方法返回的是 JSON 格式的数据。在方法内部，首先通过 ...

上传/下载文件 <form method="post" action="/file/upload" enctype="multipart/form-data"> <input type="file" name="file" id="fileInput"/> <input type="submit" value="上传" /> </form>
<form method="post" action="/file/download" > <input type="text" name="fileName" placeholder="请输入文件名" /> <input type="submit" value="下载" id="downloadBtn" /> </form> public class SFTPUtil { private static final String host = "10.60.0.160"; private static final int port = 22; private static final String username = "root"; private static final String password = "Z20"; private static Session session = null; public static void connect() throws Exception { } public static void upload(MultipartFile file, String path, String fileName) throws Exception { } public static boolean download(HttpServletResponse response, String path, String fileName) throws Exception { } @Controller @RequestMapping("/file") public class FileController { private static final String UPLOAD_PATH = "/data/sftp/adtuser1/upload/winbidding/"; private static final String DOWNLOAD_PATH = "/data/sftp/adtuser1/upload/winbidding/"; @PostMapping("/upload") @ResponseBody public ModelAndView upload(@RequestParam("file") MultipartFile file) { } @PostMapping("/download") public ModelAndView download(@RequestParam("fileName") String fileName, HttpServletResponse response) throws Exception { } 数据库有host port username password UPLOAD_PATH DOWNLOAD_PATH csmc字段，把上边写死的改成数据库查询，前台页面增加csmc字段下拉框，根据csmc字段把查出来的配置数据完成上传下载功能，用的mysql数据库，把代码改好写出来

public void upload(MultipartFile file, String fileName) throws Exception { ChannelSftp channel = (ChannelSftp) session.openChannel("sftp"); channel.connect(); channel.cd(uploadPath); InputStream ...

解释以下代码@RequestMapping(value = "/upload", method = RequestMethod.POST) @ResponseBody public Result upload(@RequestParam("file") MultipartFile file) { checkMaintain(); //获取文件 if (file.isEmpty()) { return ResultGenerator.genFailResult("请选择文件"); } //生成文件名 String fileName = file.getOriginalFilename(); String suffixName = fileName.substring(fileName.lastIndexOf(".")); SimpleDateFormat sdf = new SimpleDateFormat("yyyyMMdd_HHmmss"); Random r = new Random(); StringBuilder tempName = new StringBuilder(); //20201014_13021325.png tempName.append(sdf.format(new Date())).append(r.nextInt(100)).append(suffixName); String newFileName = tempName.toString(); //保存文件到对应的目录 try { File folder = new File("D:\\upload\\"); if (!folder.exists()){ folder.mkdirs(); } // 保存文件 byte[] bytes = file.getBytes(); Path path = Paths.get("D:\\upload\\" + newFileName); Files.write(path, bytes); } catch (IOException e) { e.printStackTrace(); } Result result = ResultGenerator.genSuccessResult(); result.setData("/files/" + newFileName); return result; }

这是一个使用Spring框架开发的文件上传接口，接口路径为“/upload”，方法为POST。接口会检查是否有权限上传，如果能上传，则会获取上传的文件，并且生成一个唯一的文件名，将文件保存到指定的文件夹中，并且返回一...

将下面的java代码转python @Controller public class IndexControlle { SimpleDateFormat df = new SimpleDateFormat( pattern: "yyy-MM-dd HH:mm:ss"); private final static Logger logger = LoggerFacstory.getLogger(IndexControlle.class) @RequestMapping("/index") @ResponseBody public String index() { logger.info("hello world» » » "); return "hello world》》》"; //关键数据订阅返回响应 @PostMapping(value = "/jsoni", produces = "application/json; charset=UTF-8") @ResponseBody public void json1(@RequestBody String content) throwsUnsupportedEncodingException { logger.info("json1关键数据订阅返回响应》》》"+content); @PostMapping(value = "/json2", produces = "applicatioon/json; charset=utf-8") @ResponseBody public void hello3(@RequestBody String content) { logger.info("json2响应数据》》"+content); } @PostMapping("/map10") @ResponseBody public void hello6(@RequestBody Map<String, Oboject> params){logger.info("map10响应数据》》》"+params); } //最早版本用map接收的 @PostMapping("/map1") @ResponseBody public void hello(@RequestParam Map<String, Object> params) {logger.info("map1响应数据》》"+params); @PostMapping("/map2") @ResponseBody public void hello2(@RequestParam Map<String, Object> pparams){logger.info("map2响应数据》》"+params); }

下面是将Java代码转换成Python的结果： python from datetime import datetime ...此外，Python中使用request.get_json()来获取POST请求中的JSON数据，使用request.form.to_dict()来获取POST请求中的表单数据。

@ResponseBody public GlobalResult uploadFile(MultipartFile file, HttpServletRequest request) { if (file == null) { return GlobalResult.errorMsg("文件不能为空！"); } String fileSub = file.getOriginalFilename().substring(file.getOriginalFilename().lastIndexOf(".")).toLowerCase(); //if (".jpg".equals(fileSub) || ".jpeg".equals(fileSub) || ".png".equals(fileSub) || ".gif".equals(fileSub)) {请详细解释每一行代码

public GlobalResult uploadFile(MultipartFile file, HttpServletRequest request) 该方法接受两个参数，一个是 MultipartFile 类型的文件对象，另一个是 HttpServletRequest 类型的请求对象。接下来是方法...

@RequestMapping("/admin") @Controller public class AdminController { @Autowired private AdminService adminService; ///8.登录 @RequestMapping("/login") @ResponseBody public String Login(HttpServletRequest request, HttpServletResponse response) throws IOException { String username=request.getParameter("username"); String password=request.getParameter("password"); Admin admin =adminService.login(username,password); if(admin == null){ return new Result(false,null,"登录失败，用户名或密码错误！").toString(); }else{ return new Result(true,admin,"登录成功！").toString(); } } ///首页数据 @RequestMapping("/index") @ResponseBody public String index(){ Map<String,Integer> admin =adminService.index(); if(admin == null){ return new Result(false,null,"登录失败，用户名或密码错误！").toString(); }else{ return new Result(true,admin,"登录成功！").toString(); } } }

index方法用于获取首页数据，调用注入的AdminService中的index方法，返回一个Map<String,Integer>类型的数据表示首页数据。如果获取数据失败，则返回一个Result对象表示获取数据失败，否则返回一个Result对象表示...

@RequestMapping("/update") @ResponseBody public Message update(Pet pet, MultipartFile file){ if (file != null && file.getSize() > 0){ String pic = FileLoad.uploadPetPic(file); pet.setPic(pic); } int update = petService.update(pet); if(update>0){ return Message.success(); }else{ return Message.fail(); } }

根据您提供的代码，错误可能是由于 Pet 类中没有 setPic 方法引起的。请确保 Pet 类中存在名为 setPic 的公共方法，并且该方法接受一个字符串参数。如果您已经定义了 setPic 方法但仍然出现此错误，请检查该方法是否...

package edu.cn.neusoft.project.controller; import edu.cn.neusoft.project.model.service.WorkerService; import javafx.concurrent.Worker; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Controller; import org.springframework.ui.Model; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.ResponseBody; import java.util.List; @Controller public class WorkerAction { @Autowired private WorkerService service; @RequestMapping("login.action") public String login(){ return"login"; } @RequestMapping("loginSuccess.action") public String loginSuccess(String username,String password){ boolean ret; ret = service.login( new Worker(username,password)); if(ret){ return"loginSuccess"; } return "login"; } @ResponseBody @RequestMapping("worker.action") public List<edu.cn.neusoft.project.model.vo.Worker> worker(Model model) { List<edu.cn.neusoft.project.model.vo.Worker> list = service.showAll(); Model list1 = model.addAttribute("list", list); // for(Worker worker : list){ // System.out.println(worker); // } return list; } @ ResponseBody @ RequestMapping("updateWorker. action" ) public void updateWorker( Worker worker){ System. out. println(" ---up" + worker); service . updateWorker ((edu.cn.neusoft.project.model.vo.Worker) worker); } @ ResponseBody @ RequestMapping (" deleteWorker. action") public void deleteWorker( Integer wid){ // System. out. println("--delt--"+ wid); service . deleteWorker(wid); } @ RequestMapping("regist. action" ) public String regist(){ return "regist"; } @ RequestMapping(" registSuccess. action" ) public String registSuccess(Worker worker){ service . regist((edu.cn.neusoft.project.model.vo.Worker) worker); return "login" ; } }哪里错了？请写出正确代码

public String loginSuccess(String username,String password){ boolean ret; ret = service.login(new Worker(username,password)); if(ret){ return "loginSuccess"; } return "login"; } @...

@RequestMapping(value = "/checkUserEmail",method = RequestMethod.POST) @ResponseBody public String checkUserEmail(HttpServletRequest request) { Map<String, Object> map = new HashMap<String, Object>(); String email = request.getParameter("email"); User user = userService.getUserByEmail(email); int id = Integer.valueOf(request.getParameter("id")); //用户名已存在,但不是当前用户(编辑用户的时候，不提示) if(user!=null) { if(user.getUserId()!=id) { map.put("code", 1); map.put("msg", "电子邮箱已存在！"); } } else { map.put("code",0); map.put("msg",""); } String result = new JSONObject(map).toString(); return result; }

这是一个用于检查用户邮箱是否已存在的后端接口，接收POST请求。它从请求中获取电子邮箱和用户id，通过调用UserService中的getUserByEmail方法来获取该邮箱对应的User对象。如果该邮箱已存在且用户id不等于当前用户...

//保存 @ResponseBody @RequestMapping("/save") public Map<String,String>save(String name,HttpServletRequest request ) throws IOException { Map<String,String>map=new HashMap<>(); QueryWrapper<RenkouPerson>queryWrapper=new QueryWrapper<>();// RenkouPerson renkouPerson=new RenkouPerson();//人口信息 QueryWrapper<Renkouku>queryWrapper1=new QueryWrapper<>(); //从request获取文件可能会有多个压缩包所以是个file的list或数组 MultipartHttpServletRequest multipartRequest = (MultipartHttpServletRequest) request; List<MultipartFile> files = multipartRequest.getFiles("files"); //获取库的id //Long renkoukuId=renkoukuService.getOne(queryWrapper1.eq("name",name)).getId(); //renkouPerson.setRenkoukuId(renkoukuId);如何获取renkouku的id

通过以下代码可以获取renkouku的id： Long renkoukuId = renkoukuService.getOne(new QueryWrapper().eq("name", name)).getId(); 其中，QueryWrapper用来构建查询条件，eq("name", name)表示查询name字段...

@ResponseBody @RequestMapping("/user/delete") public Map<String, Object> deleteUser(@RequestBody Integer id) { userService.deleteByPrimaryKey(id); return new ResponseBean().getResponseMap(); }

该方法接收一个 id 参数，该参数类型为 Integer，并使用 @RequestBody 注解表示该参数是从请求体中获取的。在方法体内部，调用了 userService 的 deleteByPrimaryKey 方法删除指定 id 的用户，并返回一...

@RequestMapping(value = { "batchApprove" }, method = { org.springframework.web.bind.annotation.RequestMethod.POST }) @ResponseBody public Object batchApprove(HttpServletRequest request,@RequestBody String json) { BatchApproveVo vo = JSON.parseObject(json,BatchApproveVo.class); UserBean user = super.getWxOAuthUser(request); if (ObjectUtil.hasEmpty(vo.getTaskIdList())) { return new ResultDTO(false,"任务Id不能为空！"); } try { return new ResultDTO(true,orderService.batchApprove(vo,user)); } catch (Exception e) { e.printStackTrace(); return new ResultDTO(false,e.getMessage()); } }这段代码有问题吗

这个方法接收一个 HTTPServletRequest 对象和一个 JSON 字符串作为参数。方法首先调用 getWxOAuthUser 方法获取当前用户信息，然后使用 JSON.parseObject 方法将 JSON 字符串解析为 BatchApproveVo 对象。然后，方法...

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