Question

我对春季启动有点新意，我开发了以下逻辑：

这是我的要求。只是我想将图像上传到tomcat服务器，因为我已经尝试过使用spring boot

的逻辑

@SpringBootApplication
public class MyApplication {
    public static void main(String[] args) throws IOException {
        new File(UploadController.uploadDir).mkdirs();
        SpringApplication.run(MyApplication.class, args);
    }
}

@RestController
public class UploadController() {

@RequestMapping("/test")
public String get(Model model) {
    return "abc";
}

@RequestMapping(value = "/upload", method = RequestMethod.POST)
    public String uploadFiles(@RequestParam("uploadedFiles") MultipartFile[] uploadedFiles) throws IOException {
        for(MultipartFile f : uploadedFiles) {
            File file = new File(uploadDir + f.getOriginalFilename());
            f.transferTo(file);
        }

        return "redirect:/";
    }
}

在这里，获取请求工作正常。这是get

的代码

public static String get() throws IOException {
        HttpURLConnection conn = null;
        BufferedReader br = null;

        try {
            URL url = new URL("http://localhost:8080/test");
            conn = (HttpURLConnection) url.openConnection();
            conn.setRequestMethod("GET");
            conn.setRequestProperty("Accept", "application/json");

            if (conn.getResponseCode() != 200) {
                throw new RuntimeException("Failed : HTTP error code : " + conn.getResponseCode());
            }

            br = new BufferedReader(new InputStreamReader((conn.getInputStream())));
            return br.readLine();
        } catch (MalformedURLException e) {
            throw new IOException(e.getMessage());
        } catch (IOException e) {
            throw new IOException(e.getMessage());
        } finally {
            if (null != conn) {
                conn.disconnect();
            }
            if (null != br) {
                br.close();
            }
        }
    }

但我不知道如何调用post方法。我尝试使用POST作为请求类型的相同逻辑。 BUt无法上传图片。任何人都可以从客户端发给我上传的代码吗？

Answer 1

使用JSP和Javascript，代码如下所示：

JSP代码：

<input name="media[]" type="file" id="xmlTemplate" multiple>

Javascript代码：

var data = new FormData();     
jQuery.each($('input[name^="media"]')[0].files, function(i, file) {
    data.append("uploadedFiles", file);
});

var json = '{' + .... + ']}';//Some JSON I was also passing alongwith files

data.append('estimateInfo', new Blob([json], {
                        type: "application/json"
                    }));

$.ajax({
        type : "POST",
        processData: false,
        dataType: 'json',
        data: data,
        cache: false,
        contentType: false,
        url: 'createEstimates',
        success: function(result) {

        },
        error: function(result) {

        }
      });

控制器代码：

@RequestMapping(value = "/createEstimates", method = RequestMethod.POST, consumes = { "multipart/form-data" })
    @ResponseBody
    public EstimateResponse createEstimates(HttpServletRequest request,
            @RequestPart("estimateInfo") EstimateInfo estimateInfo, @RequestPart("uploadedFiles") MultipartFile... files) {
}

如果要从Java客户端发送，则可以参考Upload Files Programmatically

弹簧启动后调用问题。无法从客户端呼叫控制器

1 个答案: