HttpClientUtil
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.UnsupportedEncodingException;
import java.util.ArrayList;
import java.util.List;
import org.apache.commons.httpclient.HttpClient;
import org.apache.commons.httpclient.methods.PostMethod;
import org.apache.commons.httpclient.methods.StringRequestEntity;
import org.apache.http.HttpEntity;
import org.apache.http.NameValuePair;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.util.EntityUtils;
import org.json.JSONObject;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class HttpClientUtil {
private final static Logger log = LoggerFactory.getLogger(HttpClientUtil.class);
public static CloseableHttpClient getHttpClient() {
return HttpClients.createDefault();
}
public static void closeHttpClient(CloseableHttpClient client) throws IOException {
if (client != null) {
client.close();
}
}
public static String postString(String url, String json) {
HttpClient httpclient = new HttpClient();
PostMethod post = new PostMethod(url);
String response = null;
try {
post.setRequestEntity(new StringRequestEntity(json, "application/json", "UTF-8"));
httpclient.executeMethod(post);
InputStream inputStream = post.getResponseBodyAsStream();
BufferedReader br = new BufferedReader(new InputStreamReader(inputStream));
StringBuffer stringBuffer = new StringBuffer();
String str = "";
while ((str = br.readLine()) != null) {
stringBuffer.append(str.replace("\\", ""));
}
response = stringBuffer.toString();
} catch (Exception e) {
e.printStackTrace();
} finally {
post.releaseConnection();
httpclient.getHttpConnectionManager().closeIdleConnections(0);
}
return response;
}
public static String postXml(String url, String xml) {
HttpClient httpclient = new HttpClient();
PostMethod post = new PostMethod(url);
String response = null;
try {
post.setRequestEntity(new StringRequestEntity(xml, "text/xml", "GBK"));
httpclient.executeMethod(post);
InputStream inputStream = post.getResponseBodyAsStream();
BufferedReader br = new BufferedReader(new InputStreamReader(inputStream, "GBK"));
StringBuffer stringBuffer = new StringBuffer();
String str = "";
while ((str = br.readLine()) != null) {
stringBuffer.append(str.replace("\\", ""));
}
response = stringBuffer.toString();
} catch (Exception e) {
e.printStackTrace();
} finally {
post.releaseConnection();
httpclient.getHttpConnectionManager().closeIdleConnections(0);
}
return response;
}
/**
* POST方式发起http请求
*/
public void requestByPostMethod() {
CloseableHttpClient httpClient = getHttpClient();
try {
HttpPost post = new HttpPost("http://www.baidu.com"); // 这里用上本机的某个工程做测试
// 创建参数列表
List
list.add(new BasicNameValuePair("j_username", "admin"));
list.add(new BasicNameValuePair("j_password", "admin"));
// url格式编码
UrlEncodedFormEntity uefEntity = new UrlEncodedFormEntity(list, "UTF-8");
post.setEntity(uefEntity);
System.out.println("POST 请求...." + post.getURI());
// 执行请求
CloseableHttpResponse httpResponse = httpClient.execute(post);
try {
HttpEntity entity = httpResponse.getEntity();
if (null != entity) {
System.out.println("-------------------------------------------------------");
System.out.println(EntityUtils.toString(entity, "UTF-8"));
System.out.println("-------------------------------------------------------");
}
} finally {
httpResponse.close();
}
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} finally {
try {
closeHttpClient(httpClient);
} catch (Exception e) {
e.printStackTrace();
}
}
}
/**
* post请求,参数json
*
* @param url
* @param json
* @return
*/
public static String postJson(String url, net.sf.json.JSONObject json) {
HttpClient httpclient = new HttpClient();
PostMethod post = new PostMethod(url);
String response = null;
InputStream inputStream = null;
BufferedReader br = null;
try {
post.setRequestEntity(new StringRequestEntity(json.toString(), "application/json", "UTF-8"));
httpclient.executeMethod(post);
inputStream = post.getResponseBodyAsStream();
br = new BufferedReader(new InputStreamReader(inputStream));
StringBuffer stringBuffer = new StringBuffer();
String str;
while ((str = br.readLine()) != null) {
stringBuffer.append(str.replace("\\", ""));
}
response = stringBuffer.toString();
} catch (Exception e) {
e.printStackTrace();
log.info("微信公众号推送异常打印", "");
} finally {
try {
if (inputStream != null) inputStream.close();
if (br != null) inputStream.close();
} catch (IOException e) {
e.printStackTrace();
}
post.releaseConnection();
httpclient.getHttpConnectionManager().closeIdleConnections(0);
}
return response;
}
/**
* post请求,参数json
*
* @param url
* @param json
* @return
*/
public static String postJson(String url, JSONObject json) {
HttpClient httpclient = new HttpClient();
PostMethod post = new PostMethod(url);
String response = null;
InputStream inputStream = null;
BufferedReader br = null;
try {
post.setRequestEntity(new StringRequestEntity(json.toString(), "application/json", "UTF-8"));
httpclient.executeMethod(post);
inputStream = post.getResponseBodyAsStream();
br = new BufferedReader(new InputStreamReader(inputStream));
StringBuffer stringBuffer = new StringBuffer();
String str = "";
while ((str = br.readLine()) != null) {
stringBuffer.append(str.replace("\\", ""));
}
response = stringBuffer.toString();
if (inputStream != null) inputStream.close();
if (br != null) inputStream.close();
} catch (Exception e) {
e.printStackTrace();
} finally {
post.releaseConnection();
httpclient.getHttpConnectionManager().closeIdleConnections(0);
}
return response;
}
}