java模拟提交post工具类

最近在搞微信开发，问题不少，微信文档更是毒多得很，接口测试也不解释清楚，总之麻烦的很，自己写写查查，从晚上找了几段代码组合做了个工具类，留下笔记，以后再写到这里，也好方便一点 package com.wechat.util; import java.io.BufferedReader; import java.io.File; import java.io.IOException; import java.io.InputStreamReader; import java.io.PrintWriter; import java.net.URL; import java.net.URLConnection; import java.util.List; import java.util.Map; import org.apache.commons.httpclient.methods.PostMethod; import org.apache.commons.httpclient.methods.multipart.FilePart; import org.apache.commons.httpclient.methods.multipart.MultipartRequestEntity; import org.apache.commons.httpclient.methods.multipart.Part; import org.apache.http.HttpStatus; import fr.opensagres.xdocreport.document.json.JSONObject; public class HttpRequest { /** * 向指定URL发�?�GET方法的请�? * * @param url * 发�?�请求的URL * @param param * 请求参数，请求参数应该是 name1=value1&name2=value2 的形式�?? * @return URL �?代表远程资源的响应结�? */ public static String sendGet(String url, String param) { String result = ""; BufferedReader in = null; try { String urlNameString = url + "?" + param; URL realUrl = new URL(urlNameString); // 打开和URL之间的连�? URLConnection connection = realUrl.openConnection(); // 设置通用的请求属�? connection.setRequestProperty("accept", "*/*"); connection.setRequestProperty("connection", "Keep-Alive"); connection.setRequestProperty("user-agent", "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)"); // 建立实际的连�? connection.connect(); // 获取�?有响应头字段 Map<String, List<String>> map = connection.getHeaderFields(); // 遍历�?有的响应头字�? for (String key : map.keySet()) { System.out.println(key + "--->" + map.get(key)); } // 定义 BufferedReader输入流来读取URL的响�? in = new BufferedReader(new InputStreamReader( connection.getInputStream())); String line; while ((line = in.readLine()) != null) { result += line; } } catch (Exception e) { System.out.println("发�?�GET请求出现异常�?" + e); e.printStackTrace(); } // 使用finally块来关闭输入�? finally { try { if (in != null) { in.close(); } } catch (Exception e2) { e2.printStackTrace(); } } return result; } /** * 向指�? URL 发�?�POST方法的请�? * * @param url * 发�?�请求的 URL * @param param * 请求参数，请求参数应该是 name1=value1&name2=value2 的形式�?? * @return �?代表远程资源的响应结�? */ public static String sendPost(String url, String param) { PrintWriter out = null; BufferedReader in = null; String result = ""; try { URL realUrl = new URL(url); // 打开和URL之间的连�? URLConnection conn = realUrl.openConnection(); // 设置通用的请求属�? conn.setRequestProperty("accept", "*/*"); conn.setRequestProperty("connection", "Keep-Alive"); conn.setRequestProperty("user-agent", "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)"); // 发�?�POST请求必须设置如下两行 conn.setDoOutput(true); conn.setDoInput(true); // 获取URLConnection对象对应的输出流 out = new PrintWriter(conn.getOutputStream()); // 发�?�请求参�? out.print(param); // flush输出流的缓冲 out.flush(); // 定义BufferedReader输入流来读取URL的响�? in = new BufferedReader( new InputStreamReader(conn.getInputStream())); String line; while ((line = in.readLine()) != null) { result += line; } } catch (Exception e) { System.out.println("发�?? POST 请求出现异常�?" + e); e.printStackTrace(); } // 使用finally块来关闭输出流�?�输入流 finally { try { if (out != null) { out.close(); } if (in != null) { in.close(); } } catch (IOException ex) { ex.printStackTrace(); } } return result; } /** * �ϴ���ý���ļ� * * @param url * ����url * @param access_token * access_token * @param type * �ļ����� * @param file * �ļ����� * @return */ public static String uploadImage(String url, String access_token, String type, File file) { org.apache.commons.httpclient.HttpClient client = new org.apache.commons.httpclient.HttpClient(); String uploadurl = String.format("%s?access_token=%s&type=%s", url, access_token, type); PostMethod post = new PostMethod(uploadurl); post.setRequestHeader( "User-Agent", "Mozilla/5.0 (Macintosh; Intel Mac OS X 10.9; rv:30.0) Gecko/20100101 Firefox/30.0"); post.setRequestHeader("Host", "file.api.weixin.qq.com"); post.setRequestHeader("Connection", "Keep-Alive"); post.setRequestHeader("Cache-Control", "no-cache"); String result = null; try { if (file != null && file.exists()) { FilePart filepart = new FilePart("media", file, "image/jpeg", "UTF-8"); Part[] parts = new Part[] { filepart }; MultipartRequestEntity entity = new MultipartRequestEntity( parts, post.getParams()); post.setRequestEntity(entity); int status = client.executeMethod(post); if (status == HttpStatus.SC_OK) { result = post.getResponseBodyAsString(); } } } catch (Exception e) { e.printStackTrace(); } finally { return result; } } public static String JsonMediaId(String response) { System.out.println(response); JSONObject json = new JSONObject(response); try { return (String) json.get("media_id"); } catch (Exception e) { // TODO: handle exception } return null; } }