/**
* 发送Post请求
*
* @param path
* 请求路径
* @param params
* 请求参数
* @param encoding
* 编码
* @return 服务器返回流
*/
public static InputStream sendPOSTRequest(String url,
Map<String, String> params, String encoding) throws Exception {
StringBuilder data = new StringBuilder();
if (params != null && !params.isEmpty()) {
for (Map.Entry<String, String> entry : params.entrySet()) {
data.append(entry.getKey()).append("=");
data.append(URLEncoder.encode(entry.getValue(), encoding));
data.append("&");
}
data.deleteCharAt(data.length() - 1);
}
byte[] entity = data.toString().getBytes();// 生成实体数据
HttpURLConnection conn = (HttpURLConnection) new URL(url)
.openConnection();
conn.setConnectTimeout(5000);
conn.setRequestMethod("POST");
conn.setDoOutput(true);// 允许对外输出数据
conn.setRequestProperty("Content-Type",
"application/x-www-form-urlencoded");
conn.setRequestProperty("Content-Length", String.valueOf(entity.length));
OutputStream outStream = conn.getOutputStream();
outStream.write(entity);
if (conn.getResponseCode() == 200) {
return conn.getInputStream();
}
return null;
}
/**
* 发送get请求的方法
* @param url
* @param params
* @param encoding
* @return
* @throws Exception
*/
public static InputStream sendGETRuqest(String url,
Map<String, String> params, String encoding) throws Exception {
// StringBuilder是用来组拼请求地址和参数
StringBuilder sb = new StringBuilder();
sb.append(url).append("?");
if (params != null && params.size() != 0) {
for (Map.Entry<String, String> entry : params.entrySet()) {
// 如果请求参数中有中文，需要进行URLEncoder编码
sb.append(entry.getKey()).append("=")
.append(URLEncoder.encode(entry.getValue(), encoding));
sb.append("&");
}
sb.deleteCharAt(sb.length() - 1);
}
HttpURLConnection conn = (HttpURLConnection) new URL(sb.toString())
.openConnection();
conn.setConnectTimeout(5000);
conn.setRequestMethod("GET");
if (conn.getResponseCode() == 200) {
return conn.getInputStream();
}
return null;
}
