开发中遇到对接需求时候，被要求用post请求传form-data数据的时候一脸懵逼，最后经过多重摸索百度后终于找到方法，废话不多说，直接上代码。
public StringBuffer connection(Map<String,String> map, String strURL) { // start HttpClient httpClient = new HttpClient(); httpClient.getHostConfiguration().setProxy("10.192.10.101", 8080); //设置代理 httpClient.getParams().setAuthenticationPreemptive(true); HttpConnectionManagerParams managerParams = httpClient .getHttpConnectionManager().getParams(); // 设置连接超时时间(单位毫秒) managerParams.setConnectionTimeout(30000); // 设置读数据超时时间(单位毫秒) managerParams.setSoTimeout(120000); PostMethod postMethod = new PostMethod(strURL); // 将请求参数XML的值放入postMethod中 String strResponse = null; StringBuffer buffer = new StringBuffer(); // end try { //设置参数到请求对象中，重点是map中有几个参数NameValuePair数组也必须设置成几，不然 //会空指针异常 NameValuePair[] nvps = new NameValuePair[4]; int index = 0; for(String key : map.keySet()){ nvps[index++]=new NameValuePair(key, map.get(key)); } postMethod.setRequestBody(nvps); int statusCode = httpClient.executeMethod(postMethod); if (statusCode != HttpStatus.SC_OK) { throw new IllegalStateException("Method failed: " + postMethod.getStatusLine()); } BufferedReader reader = null; reader = new BufferedReader(new InputStreamReader( postMethod.getResponseBodyAsStream(), "UTF-8")); while ((strResponse = reader.readLine()) != null) { buffer.append(strResponse); } } catch (Exception ex) { throw new IllegalStateException(ex.toString()); } finally { // 释放连接 postMethod.releaseConnection(); } return buffer; } 另附上get请求代码：
public String httpGetInfo(String strURL) throws Exception{ CloseableHttpClient httpCilent2 = HttpClients.createDefault(); HttpHost proxy = new HttpHost("10.192.10.101", 8080); RequestConfig requestConfig = RequestConfig.custom() .setProxy(proxy)//设置代理 .setConnectTimeout(30000) //设置连接超时时间 .setConnectionRequestTimeout(120000) // 设置请求超时时间 .setSocketTimeout(120000) .setRedirectsEnabled(true)//默认允许自动重定向 .build(); HttpGet httpGet2 = new HttpGet(strURL); httpGet2.setConfig(requestConfig); String srtResult = ""; try { HttpResponse httpResponse = httpCilent2.execute(httpGet2); if(httpResponse.getStatusLine().getStatusCode() == 200){ srtResult = EntityUtils.toString(httpResponse.getEntity());//获得返回的果 System.out.println(srtResult); }else if(httpResponse.getStatusLine().getStatusCode() == 400){ //.......... }else if(httpResponse.getStatusLine().getStatusCode() == 500){ //............. } } catch (IOException e) { e.printStackTrace(); }finally { try { httpCilent2.close(); } catch (IOException e) { e.printStackTrace(); } } return srtResult; }
