HttpClient (Fri)--Upload file for simulation form

1.maven Dependency

      <Dependency>        <groupId>Org.apache.httpcomponents</groupId>        <Artifactid>HttpClient</Artifactid>        <version>4.5.2</version>    </Dependency>        <Dependency>        <groupId>Org.apache.httpcomponents</groupId>        <Artifactid>Httpmime</Artifactid>        <version>4.5.2</version>    </Dependency>

2. Code implementation

ImportJava.io.File;Importjava.io.IOException;Importorg.apache.http.HttpEntity;ImportOrg.apache.http.HttpResponse;Importorg.apache.http.client.ClientProtocolException;Importorg.apache.http.client.HttpClient;ImportOrg.apache.http.client.config.RequestConfig;ImportOrg.apache.http.client.methods.HttpPost;ImportOrg.apache.http.entity.mime.MultipartEntityBuilder;Importorg.apache.http.impl.client.HttpClients;Importorg.apache.http.util.EntityUtils; Public classHttpclientupload { Public Static voidMain (string[] args) {//upload the fileUrl to the URL, and after the upload is successful, returnString url = "Http://127.0.0.1:8080/Joe/upload"; String FILEURL= "C:/abc.txt"; Try{System.out.println (post (URL,"File",NewFile (FILEURL)); } Catch(Exception e) {e.printstacktrace (); }    }    /*** Post: (upload). *      * @authorJoe date:2017 September 11 afternoon 5:37:46 *@paramServerURL *@paramFileparamname *@paramfile *@return     * @throwsclientprotocolexception *@throwsIOException*/     Public Staticstring Post (String ServerURL, string fileparamname, file file)throwsclientprotocolexception, IOException {httppost httppost=NewHttpPost (ServerURL); Multipartentitybuilder Builder=multipartentitybuilder.create (); //uploaded Filesbuilder.addbinarybody (fileparamname, file); Httpentity httpentity=Builder.build ();        Httppost.setentity (httpentity); //request to get data timeout time, set from Connect//Manager gets connection timeout (because the current version is available to share the connection pool), set the connection time-out periodRequestconfig Requestconfig =Requestconfig.custom (). SetSocketTimeout (10000). Setconnectionrequesttimeout (3000). Setconnecttimeout (10000). build ();        Httppost.setconfig (Requestconfig); HttpClient HttpClient=Httpclients.createdefault (); HttpResponse Response=Httpclient.execute (HttpPost); returnentityutils.tostring (Response.getentity ()); }}

HttpClient (Fri)--Upload file for simulation form