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java模拟发送form-data的请求方式

2020年05月10日  | 移动技术网IT编程  | 我要评论

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 = "\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<string, string> 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<string, file> 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<string, string> headerparam;
	/**
	 * 常规参数
	 */
	private map<string, string> bodyparam;
	/**
	 * 待上传的文件参数 filename和file
	 */
	private map<string, file> 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<string, string> getheaderparam() {
//		return headerparam;
//	}
//
//	public void setheaderparam(map<string, string> headerparam) {
//		this.headerparam = headerparam;
//	}

	public map<string, string> getbodyparam() {
		return bodyparam;
	}

	public void setbodyparam(map<string, string> bodyparam) {
		this.bodyparam = bodyparam;
	}

	public map<string, file> getfileparam() {
		return fileparam;
	}

	public void setfileparam(map<string, file> 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移动技术网。

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