java模拟发送form-data的请求方式

 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()); } }

 /** * 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 = "\r\n"; // 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; } 

 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; } }