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分享java后台用feign上传文件报错
异常：Caused by: com.fasterxml.jackson.databind.exc.InvalidDefinitionException: No serializer found for class java.io.ByteArrayInputStream and no properties discovered to create BeanSerializer (to avoid exception, disable SerializationFeature.FAIL_ON_EMPTY_BEANS) (through reference chain: org.springframework.web.multipart.commons.CommonsMultipartFile["inputStream"])
直接上代码，请高手给指点下....
上传图片代码，主要就是这三行， 跟createFileItem方法
FileItem fileItem = createFileItem(picturePath);
MultipartFile multipartFile = new CommonsMultipartFile(fileItem);
JSONObject res = getFeign().uploadFile(multipartFile); (这个报错 )
feign接口函数
直接上代码，请高手给指点下....
上传图片代码，主要就是这三行， 跟createFileItem方法
FileItem fileItem = createFileItem(picturePath);
MultipartFile multipartFile = new CommonsMultipartFile(fileItem);
JSONObject res = getFeign().uploadFile(multipartFile); (这个报错 )
@Override
public void uploadLogoPicture(String picturePath) {
File logoPicture = new File(picturePath);
JSONObject jsonObject = new JSONObject();
jsonObject.put("fileName", logoPicture.getName());
jsonObject.put("fileSize", logoPicture.length());
FileItem fileItem = createFileItem(picturePath);
MultipartFile multipartFile = new CommonsMultipartFile(fileItem);
JSONObject res = getFeign().uploadFile(multipartFile); //报错行
log.info(res.toString());
res = getFeign().uploadLogo(jsonObject);
log.info(res.toString());
}
public FileItem createFileItem(String filePath) {
FileItemFactory factory = new DiskFileItemFactory(16, null);
String textFieldName = "file";
int num = filePath.lastIndexOf(".");
String extFile = filePath.substring(num);
FileItem item = factory.createItem(textFieldName, "multipart/form-data", true, filePath);
File newfile = new File(filePath);
int bytesRead = 0;
byte[] buffer = new byte[8192];
try {
FileInputStream fis = new FileInputStream(newfile);
OutputStream os = item.getOutputStream();
while ((bytesRead = fis.read(buffer, 0, 8192)) != -1) {
os.write(buffer, 0, bytesRead);
}
os.close();
fis.close();
} catch (IOException e) {
e.printStackTrace();
}
return item;
}feign接口函数
/**
* 上传文件
* @param file
* @return
*/
@RequestLine("POST uploadFile.psp")
@Headers({"Content-Type: multipart/form-data", "UserName: admin", "PassWord: 123456"})
JSONObject uploadFile(@RequestParam MultipartFile file);
...全文
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liu_F_87 2020-01-20
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看上面回复
liu_F_87 2020-01-20
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搞定了
// 上传文件， 内部调用 sendPost()
private void uploadFile(String filePath) {
String url = "http://" + getIp() + ":8765/uploadFile.psp";
Map<String, String> requestHeader = new HashMap<>();
requestHeader.put("UserName", "111");
requestHeader.put("PassWord", "222");
requestHeader.put("APIVersion", "x.x");
requestHeader.put("IsAsyn", "true");
Map<String, String> fileList = new HashMap<>();
File file = new File(filePath);
fileList.put(file.getName(), file.getAbsolutePath());
sendPost(url, requestHeader, null, fileList, "", "");
}
/**
* 发送post请求
*
* @param requestUrl
* 请求url
* @param requestHeader
* 请求头
* @param formTexts
* 表单数据
* @param files
* 上传文件
* @param requestEncoding
* 请求编码
* @param responseEncoding
* 响应编码
* @return 页面响应html
*/
public synchronized static String sendPost(String requestUrl, Map<String, String> requestHeader,
Map<String, String> formTexts, Map<String, String> files,
String requestEncoding, String responseEncoding) {
OutputStream out = null;
BufferedReader reader = null;
String result = "";
try {
if (requestUrl == null || requestUrl.isEmpty()) {
return result;
}
URL realUrl = new URL(requestUrl);
HttpURLConnection connection = (HttpURLConnection) realUrl.openConnection();
connection.setRequestProperty("accept", "text/html, application/xhtml+xml, image/jxr, */*");
connection.setRequestProperty("user-agent", "Mozilla/5.0 (Windows NT 10.0; WOW64; rv:53.0) Gecko/20100101 Firefox/53.0");
if (requestHeader != null && requestHeader.size() > 0) {
for (Map.Entry<String, String> entry : requestHeader.entrySet()) {
connection.setRequestProperty(entry.getKey(), entry.getValue());
}
}
connection.setDoOutput(true);
connection.setDoInput(true);
connection.setRequestMethod("POST");
if (requestEncoding == null || requestEncoding.isEmpty()) {
requestEncoding = "UTF-8";
}
if (responseEncoding == null || responseEncoding.isEmpty()) {
responseEncoding = "UTF-8";
}
if (requestHeader != null && requestHeader.size() > 0) {
for (Map.Entry<String, String> entry : requestHeader.entrySet()) {
connection.setRequestProperty(entry.getKey(), entry.getValue());
}
}
if (files == null || files.size() == 0) {
connection.setRequestProperty("content-type", "application/x-www-form-urlencoded");
out = new DataOutputStream(connection.getOutputStream());
if (formTexts != null && formTexts.size() > 0) {
String formData = "";
for (Map.Entry<String, String> entry : formTexts.entrySet()) {
formData += entry.getKey() + "=" + entry.getValue() + "&";
}
formData = formData.substring(0, formData.length() - 1);
out.write(formData.toString().getBytes(requestEncoding));
}
} else {
String boundary = "-----------------------------" + String.valueOf(new Date().getTime());
connection.setRequestProperty("content-type", "multipart/form-data; boundary=" + boundary);
out = new DataOutputStream(connection.getOutputStream());
if (formTexts != null && formTexts.size() > 0) {
StringBuilder sbFormData = new StringBuilder();
for (Map.Entry<String, String> entry : formTexts.entrySet()) {
sbFormData.append("--" + boundary + "\r\n");
sbFormData.append("Content-Disposition: form-data; name=\"" + entry.getKey() + "\"\r\n\r\n");
sbFormData.append(entry.getValue() + "\r\n");
}
out.write(sbFormData.toString().getBytes(requestEncoding));
}
for (Map.Entry<String, String> entry : files.entrySet()) {
String fileName = entry.getKey();
String filePath = entry.getValue();
if (fileName == null || fileName.isEmpty() || filePath == null || filePath.isEmpty()) {
continue;
}
File file = new File(filePath);
if (!file.exists()) {
continue;
}
out.write(("--" + boundary + "\r\n").getBytes(requestEncoding));
out.write(("Content-Disposition: form-data; name=\"" + fileName + "\"; filename=\"" + file.getName() + "\"\r\n").getBytes(requestEncoding));
out.write(("Content-Type: application/x-msdownload\r\n\r\n").getBytes(requestEncoding));
DataInputStream in = new DataInputStream(new FileInputStream(file));
int bytes = 0;
byte[] bufferOut = new byte[1024];
while ((bytes = in.read(bufferOut)) != -1) {
out.write(bufferOut, 0, bytes);
}
in.close();
out.write(("\r\n").getBytes(requestEncoding));
}
//out.write(("--" + boundary + "--").getBytes(requestEncoding));这样写微信公众号开发上传素材有问题
out.write(("--" + boundary + "--\r\n").getBytes(requestEncoding));
}
out.flush();
out.close();
out = null;
reader = new BufferedReader(new InputStreamReader(connection.getInputStream(), responseEncoding));
String line;
while ((line = reader.readLine()) != null) {
result += line;
}
} catch (Exception e) {
System.out.println("发送POST请求出现异常！");
e.printStackTrace();
} finally {
try {
if (out != null) {
out.close();
}
if (reader != null) {
reader.close();
}
} catch (IOException ex) {
ex.printStackTrace();
}
}
return result;
}
戎码一生灬 2020-01-16
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需要添加feign支持form表单的pom依赖
M义薄云天 2020-01-15
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请问下搞定没有
