我就废话不多说了，大家还是直接看代码吧！

package com.silot.test;

import org.apache.http.HttpResponse;

import org.apache.http.client.methods.HttpPost;

import org.apache.http.entity.mime.HttpMultipartMode;

import org.apache.http.entity.mime.MultipartEntity;

import org.apache.http.entity.mime.content.StringBody;

import org.apache.http.impl.client.DefaultHttpClient;

import java.io.BufferedReader;

import java.io.InputStream;

import java.io.InputStreamReader;

import java.nio.charset.Charset;

public class TestCli

{

public static void main(String args[]) throws Exception

{

MultipartEntity multipartEntity = new MultipartEntity(HttpMultipartMode.BROWSER_COMPATIBLE, "------------------------------0ea3fcae38ff", Charset.defaultCharset());

multipartEntity.addPart("skey", new StringBody("哈哈哈哈哈", Charset.forName("UTF-8")));

multipartEntity.addPart("operator", new StringBody("啦啦啦啦", Charset.forName("UTF-8")));

multipartEntity.addPart("VrfKey", new StringBody("渣渣渣", Charset.forName("UTF-8")));

multipartEntity.addPart("StatCode", new StringBody("00", Charset.forName("UTF-8")));

multipartEntity.addPart("mass_id", new StringBody("1234", Charset.forName("UTF-8")));

multipartEntity.addPart("reference_id", new StringBody("21231544", Charset.forName("UTF-8")));

HttpPost request = new HttpPost("http://xiefei.s1.natapp.cc/v1/withdrawCallback");

request.setEntity(multipartEntity);

request.addHeader("Content-Type", "Content-Disposition: form-data; boundary=------------------------------0ea3fcae38ff");

DefaultHttpClient httpClient = new DefaultHttpClient();

HttpResponse response = httpClient.execute(request);

InputStream is = response.getEntity().getContent();

BufferedReader in = new BufferedReader(new InputStreamReader(is));

StringBuffer buffer = new StringBuffer();

String line = "";

while ((line = in.readLine()) != null)

{

buffer.append(line);

}

System.out.println("发送消息收到的返回：" + buffer.toString());

}

}

补充知识：java模拟复杂表单post请求

java模拟复杂表单post请求

能支持文件上传

/**

* 支持复杂表单，比如文件上传

* @param formParam

* @return

* @throws Exception

*/

public static String postWithForm(FormParam formParam) throws Exception {

String url = formParam.getUrl();

String charset = "UTF-8";

String boundary = Long.toHexString(System.currentTimeMillis()); // Just generate some unique random value.

String CRLF = "

"; // Line separator required by multipart/form-data.

URLConnection connection = new URL(url).openConnection();

connection.setDoOutput(true);

connection.setRequestProperty("Content-Type", "multipart/form-data; boundary=" + boundary);

try (

OutputStream output = connection.getOutputStream();

PrintWriter writer = new PrintWriter(new OutputStreamWriter(output, charset), true);

) {

// make body param

Map bodyParam = formParam.getBodyParam();

if (null != bodyParam) {

for (String p : bodyParam.keySet()) {

writer.append("--" + boundary).append(CRLF);

writer.append("Content-Disposition: form-data; name="" + p + """).append(CRLF);

writer.append("Content-Type: text/plain; charset=" + charset).append(CRLF);

writer.append(CRLF).append(bodyParam.get(p)).append(CRLF).flush();

}

}

// Send file.

Map fileParam = formParam.getFileParam();

if (null != fileParam) {

for (String fileName : fileParam.keySet()) {

writer.append("--" + boundary).append(CRLF);

writer.append("Content-Disposition: form-data; name="" + fileName + ""; filename=""

+ fileParam.get(fileName).getName() + """).append(CRLF);

writer.append("Content-Type: " + URLConnection.guessContentTypeFromName(fileName)).append(CRLF);

writer.append("Content-Transfer-Encoding: binary").append(CRLF);

writer.append(CRLF).flush();

Files.copy(fileParam.get(fileName).toPath(), output);

output.flush(); // Important before continuing with writer!

writer.append(CRLF).flush(); // CRLF is important! It indicates end of boundary.

}

}

// End of multipart/form-data.

writer.append("--" + boundary + "--").append(CRLF).flush();

}

HttpURLConnection conn = (HttpURLConnection) connection;

ByteArrayOutputStream bout = new ByteArrayOutputStream();

int len;

byte[] buffer = new byte[1024];

while ((len = conn.getInputStream().read(buffer)) != -1) {

bout.write(buffer, 0, len);

}

String result = new String(bout.toByteArray(), "utf-8");

return result;

}

FormParam封装类:

package net.riking.core.utils;

import java.io.File;

import java.util.Map;

public class FormParam {

private String url;

//private String auth;

///**

// * http请求头里的参数

// */

//private Map headerParam;

/**

* 常规参数

*/

private Map bodyParam;

/**

* 待上传的文件参数 filename和file

*/

private Map fileParam;

public String getUrl() {

return url;

}

public void setUrl(String url) {

this.url = url;

}

//public String getAuth() {

//return auth;

//}

//

//public void setAuth(String auth) {

//this.auth = auth;

//}

//

//public Map getHeaderParam() {

//return headerParam;

//}

//

//public void setHeaderParam(Map headerParam) {

//this.headerParam = headerParam;

//}

public Map getBodyParam() {

return bodyParam;

}

public void setBodyParam(Map bodyParam) {

this.bodyParam = bodyParam;

}

public Map getFileParam() {

return fileParam;

}

public void setFileParam(Map fileParam) {

this.fileParam = fileParam;

}

}

以上这篇java模拟发送form-data的请求方式就是小编分享给大家的全部内容了，希望能给大家一个参考，也希望大家多多支持云海天教程。