java发送短信--httpclient方式

post方式（这种方式比较普遍）

    实现代码如下：

    //发送短信post方式
    public void sendMSGByPost(String phone) throws HttpException, IOException{
        HttpClient client = new HttpClient();
        PostMethod post = new PostMethod(URLSTR);
        post.addRequestHeader("Content-Type","application/x-www-form-urlencoded;charset=gbk");//在头文件中设置转码
        NameValuePair[] data ={ //配置参数
                new NameValuePair("username", USR),
                new NameValuePair("password", PSD),
                new NameValuePair("phone",phone),
                new NameValuePair("message",MSG),
                new NameValuePair("epid", EPID),
                new NameValuePair("linkid",LINKID),
                new NameValuePair("subcode",SUBCODE)
        };
        post.setRequestBody(data);
        client.executeMethod(post);//发送请求
        //以下为返回信息
        Header[] headers = post.getResponseHeaders();
        int statusCode = post.getStatusCode();//状态码
        System.out.println("statusCode:"+statusCode);
        for(Header h : headers)
        {
        System.out.println(h.toString());
        }
        String result = new String(post.getResponseBodyAsString().getBytes("gbk"));
        System.out.println(result);
        post.releaseConnection();
    }

   以上方式比较固定，其实很多都是用这种方式，有兴趣的可以试试中国网建的：http://www.smschinese.cn/api.shtml（各种代码示例）

　　另外一种写法

HttpClient client = new HttpClient(new HttpClientParams(), new SimpleHttpConnectionManager(true));
        GetMethod method = new GetMethod();
        try {
            URI base = new URI(url, false);
            method.setURI(new URI(base, "HttpBatchSendSM", false));
            method.setQueryString(new NameValuePair[] {
                    new NameValuePair("account", account),
                    new NameValuePair("pswd", pswd),
                    new NameValuePair("mobile", mobile),
                    new NameValuePair("needstatus", String.valueOf(needstatus)),
                    new NameValuePair("msg", msg),
                    new NameValuePair("extno", extno),
            });
            int result = client.executeMethod(method);
            if (result == HttpStatus.SC_OK) {
                InputStream in = method.getResponseBodyAsStream();
                ByteArrayOutputStream baos = new ByteArrayOutputStream();
                byte[] buffer = new byte[1024];
                int len = 0;
                while ((len = in.read(buffer)) != -1) {
                    baos.write(buffer, 0, len);
                }
                return URLDecoder.decode(baos.toString(), "UTF-8");
            } else {
                throw new Exception("HTTP ERROR Status: " + method.getStatusCode() + ":" + method.getStatusText());
            }
        } finally {
            method.releaseConnection();
        }