1、无参请求

/**

* 无参数请求

* @param url

* @return

*/

public static String sendNoPara(String url){

try {

PostMethod postMethod = null;

postMethod = new PostMethod(url) ;

postMethod.setRequestHeader("Content-Type", "application/x-www-form-urlencoded;charset=utf-8") ;

//参数设置，需要注意的就是里边不能传NULL，要传空字符串

org.apache.commons.httpclient.HttpClient httpClient = new org.apache.commons.httpclient.HttpClient();

int response = httpClient.executeMethod(postMethod); // 执行POST方法

String result = postMethod.getResponseBodyAsString() ;

return result;

} catch (Exception e) {

e.printStackTrace();

}

return null;

}

2、有参数请求

/**

* 发送Post请求，请求参数格式为form;

* @return

*/

public static String sendByForm(String url, NameValuePair[] data){

try {

//String postURL = "https://aip.baidubce.com/rest/2.0/image-classify/v1/vehicle_damage";

PostMethod postMethod = null;

postMethod = new PostMethod(url) ;

postMethod.setRequestHeader("Content-Type", "application/x-www-form-urlencoded;charset=utf-8") ;

//参数设置，需要注意的就是里边不能传NULL，要传空字符串

postMethod.setRequestBody(data);

org.apache.commons.httpclient.HttpClient httpClient = new org.apache.commons.httpclient.HttpClient();

int response = httpClient.executeMethod(postMethod); // 执行POST方法

InputStream in = postMethod.getResponseBodyAsStream();

//下面将stream转换为String

StringBuffer sb = new StringBuffer();

InputStreamReader isr = new InputStreamReader(in, "UTF-8");

char[] b = new char[4096];

for(int n; (n = isr.read(b)) != -1;) {

sb.append(new String(b, 0, n));

}

String returnStr = sb.toString();

return returnStr;

} catch (Exception e) {

// logger.info("请求异常"+e.getMessage(),e);

e.printStackTrace();

}

return null;

}

参数：

NameValuePair[] data = {

new NameValuePair("image",base64Str)

};

String result = RequestInterfaceUtil.sendByForm(url,data );