JAvaシミュレーションブラウザアップロードファイル(httpclient)
3175 ワード
public static String httpClientUploadFile(String url, File file,Map params) {
CloseableHttpClient httpClient = HttpClients.createDefault();
String result = "";
// post 。 , 。
String boundary ="--------------20200103121104567";
try {
HttpPost httpPost = new HttpPost(url);
//
httpPost.setHeader("Content-Type","multipart/form-data; boundary="+boundary);
//HttpEntity builder
MultipartEntityBuilder builder = MultipartEntityBuilder.create();
//
builder.setCharset(Charset.forName("UTF-8"));
//
builder.setMode(HttpMultipartMode.BROWSER_COMPATIBLE);
//boundary
builder.setBoundary(boundary);
//multipart/form-data
builder.addPart("file",new FileBody(file));//
// binary
// builder.addBinaryBody("name=\"file\"; filename=\"test.txt\"", new FileInputStream(file), ContentType.MULTIPART_FORM_DATA, file.getName());//
//
for (Map.Entry entry : params.entrySet()) {
builder.addTextBody(entry.getKey(), entry.getValue(), contentType );
}
//HttpEntity
HttpEntity entity = builder.build();
httpPost.setEntity(entity);
//
HttpResponse response = httpClient.execute(httpPost);
//
HttpEntity responseEntity = response.getEntity();
if (responseEntity != null) {
//
result = EntityUtils.toString(responseEntity, Charset.forName("UTF-8"));
}
} catch (IOException e) {
e.printStackTrace();
} catch (Exception e) {
e.printStackTrace();
} finally {
try {
httpClient.close();
} catch (IOException e) {
e.printStackTrace();
}
}
System.err.println("result"+result);
return result;
}
//main
public static void main(String[] args) {
Map params = new HashMap<>();
params.put("name"," ");
params.put("otherParam","123456");
httpClientUploadFile("http://127.0.0.1:8080/upload",new File("d:/temp/test.txt"),params);
}