org.apache.commons.httpclient

org.apache.commons.httpclient

　　/**
     * post 方法
     * @param  url
     * @param params
     * @return
     */
    public static String post(String url, Object content, String encode) throws Exception {
        
        byte[] responseBody = null;
        HttpClient httpclient = new HttpClient();
        PostMethod httpPost = new PostMethod(url);
        // 设置连接超时时间(单位毫秒)         
        httpclient.getHttpConnectionManager().getParams().setConnectionTimeout(60000);
        // 设置读数据超时时间(单位毫秒)        
        httpclient.getHttpConnectionManager().getParams().setSoTimeout(60000);
        try {
            httpPost.getParams().setParameter(HttpMethodParams.RETRY_HANDLER,new DefaultHttpMethodRetryHandler(3, false));
            // servlet
            if (content instanceof Map) {
                @SuppressWarnings("unchecked")
                Map<String, String> map = (Map<String, String>)content;
                NameValuePair[] param = new NameValuePair[map.size()];
                
                int index = 0;
                for (Map.Entry<String, String> entry : map.entrySet()) {
                    param[index] = new NameValuePair(entry.getKey(),URLEncoder.encode(entry.getValue(), "GBK"));
                }
                
                httpPost.setRequestBody(param);
            }
            // rest
            else {
                httpPost.setRequestEntity(new StringRequestEntity((String)content,"plain/text", encode));
            }
            
            // post
            int statusCode = httpclient.executeMethod(httpPost);
            // success
            if (statusCode == HttpStatus.SC_OK) {
                responseBody = httpPost.getResponseBody();
            }
            // failure
            else {
                
            }
        } catch (HttpException e) {
            throw new Exception(e.getMessage());
        } catch (IOException e) {
            throw new Exception(e.getMessage());
        } catch (Exception e) {
            throw new Exception(e.getMessage());
        } finally {
            httpPost.releaseConnection();
        }
        return new String(responseBody, encode);
    }