目录
URLConnection发送
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.net.ConnectException;
import java.net.SocketTimeoutException;
import java.net.URL;
import java.net.URLConnection;
import java.security.cert.X509Certificate;
import javax.net.ssl.HostnameVerifier;
import javax.net.ssl.HttpsURLConnection;
import javax.net.ssl.SSLContext;
import javax.net.ssl.SSLSession;
import javax.net.ssl.TrustManager;
import javax.net.ssl.X509TrustManager;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* 通用http发送方法
*
* @author
*/
public class HttpUtils {
private static final Logger log = LoggerFactory.getLogger(HttpUtils.class);
/**
* 向指定 URL 发送GET方法的请求
*
* @param url 发送请求的 URL
* @param param 请求参数，请求参数应该是 name1=value1&name2=value2 的形式。
* @return 所代表远程资源的响应结果
*/
public static String sendGet(String url, String param) {
return sendGet(url, param, "UTF-8");
}
/**
* 向指定 URL 发送GET方法的请求
*
* @param url 发送请求的 URL
* @param param 请求参数，请求参数应该是 name1=value1&name2=value2 的形式。
* @param contentType 编码类型
* @return 所代表远程资源的响应结果
*/
public static String sendGet(String url, String param, String contentType) {
StringBuilder result = new StringBuilder();
BufferedReader in = null;
try {
String urlNameString = url + "?" + param;
log.info("sendGet - {}", urlNameString);
URL realUrl = new URL(urlNameString);
URLConnection connection = realUrl.openConnection();
connection.setRequestProperty("accept", "*/*");
connection.setRequestProperty("connection", "Keep-Alive");
connection.setRequestProperty("user-agent", "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");
connection.connect();
in = new BufferedReader(new InputStreamReader(connection.getInputStream(), contentType));
String line;
while ((line = in.readLine()) != null) {
result.append(line);
}
log.info("recv - {}", result);
} catch (ConnectException e) {
log.error("调用HttpUtils.sendGet ConnectException, url=" + url + ",param=" + param, e);
} catch (SocketTimeoutException e) {
log.error("调用HttpUtils.sendGet SocketTimeoutException, url=" + url + ",param=" + param, e);
} catch (IOException e) {
log.error("调用HttpUtils.sendGet IOException, url=" + url + ",param=" + param, e);
} catch (Exception e) {
log.error("调用HttpsUtil.sendGet Exception, url=" + url + ",param=" + param, e);
} finally {
try {
if (in != null) {
in.close();
}
} catch (Exception ex) {
log.error("调用in.close Exception, url=" + url + ",param=" + param, ex);
}
}
return result.toString();
}
/**
* 向指定 URL 发送POST方法的请求
*
* @param url 发送请求的 URL
* @param param 请求参数，请求参数应该是 name1=value1&name2=value2 的形式。
* @return 所代表远程资源的响应结果
*/
public static String sendPost(String url, String param) {
PrintWriter out = null;
BufferedReader in = null;
StringBuilder result = new StringBuilder();
try {
String urlNameString = url;
log.info("sendPost - {}", urlNameString);
URL realUrl = new URL(urlNameString);
URLConnection conn = realUrl.openConnection();
conn.setRequestProperty("accept", "*/*");
conn.setRequestProperty("connection", "Keep-Alive");
conn.setRequestProperty("user-agent", "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");
conn.setRequestProperty("Accept-Charset", "utf-8");
conn.setRequestProperty("contentType", "utf-8");
conn.setDoOutput(true);
conn.setDoInput(true);
out = new PrintWriter(conn.getOutputStream());
out.print(param);
out.flush();
in = new BufferedReader(new InputStreamReader(conn.getInputStream(), "utf-8"));
String line;
while ((line = in.readLine()) != null) {
result.append(line);
}
log.info("recv - {}", result);
} catch (ConnectException e) {
log.error("调用HttpUtils.sendPost ConnectException, url=" + url + ",param=" + param, e);
} catch (SocketTimeoutException e) {
log.error("调用HttpUtils.sendPost SocketTimeoutException, url=" + url + ",param=" + param, e);
} catch (IOException e) {
log.error("调用HttpUtils.sendPost IOException, url=" + url + ",param=" + param, e);
} catch (Exception e) {
log.error("调用HttpsUtil.sendPost Exception, url=" + url + ",param=" + param, e);
} finally {
try {
if (out != null) {
out.close();
}
if (in != null) {
in.close();
}
} catch (IOException ex) {
log.error("调用in.close Exception, url=" + url + ",param=" + param, ex);
}
}
return result.toString();
}
public static String sendSSLPost(String url, String param) {
StringBuilder result = new StringBuilder();
String urlNameString = url + "?" + param;
try {
log.info("sendSSLPost - {}", urlNameString);
SSLContext sc = SSLContext.getInstance("SSL");
sc.init(null, new TrustManager[]{new TrustAnyTrustManager()}, new java.security.SecureRandom());
URL console = new URL(urlNameString);
HttpsURLConnection conn = (HttpsURLConnection) console.openConnection();
conn.setRequestProperty("accept", "*/*");
conn.setRequestProperty("connection", "Keep-Alive");
conn.setRequestProperty("user-agent", "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");
conn.setRequestProperty("Accept-Charset", "utf-8");
conn.setRequestProperty("contentType", "utf-8");
conn.setDoOutput(true);
conn.setDoInput(true);
conn.setSSLSocketFactory(sc.getSocketFactory());
conn.setHostnameVerifier(new TrustAnyHostnameVerifier());
conn.connect();
InputStream is = conn.getInputStream();
BufferedReader br = new BufferedReader(new InputStreamReader(is));
String ret = "";
while ((ret = br.readLine()) != null) {
if (ret != null && !ret.trim().equals("")) {
result.append(new String(ret.getBytes("ISO-8859-1"), "utf-8"));
}
}
log.info("recv - {}", result);
conn.disconnect();
br.close();
} catch (ConnectException e) {
log.error("调用HttpUtils.sendSSLPost ConnectException, url=" + url + ",param=" + param, e);
} catch (SocketTimeoutException e) {
log.error("调用HttpUtils.sendSSLPost SocketTimeoutException, url=" + url + ",param=" + param, e);
} catch (IOException e) {
log.error("调用HttpUtils.sendSSLPost IOException, url=" + url + ",param=" + param, e);
} catch (Exception e) {
log.error("调用HttpsUtil.sendSSLPost Exception, url=" + url + ",param=" + param, e);
}
return result.toString();
}
private static class TrustAnyTrustManager implements X509TrustManager {
@Override
public void checkClientTrusted(X509Certificate[] chain, String authType) {
}
@Override
public void checkServerTrusted(X509Certificate[] chain, String authType) {
}
@Override
public X509Certificate[] getAcceptedIssuers() {
return new X509Certificate[]{};
}
}
private static class TrustAnyHostnameVerifier implements HostnameVerifier {
@Override
public boolean verify(String hostname, SSLSession session) {
return true;
}
}
}httpClient发送
maven jar
<!-- httpclient -->
<dependency>
<groupId>org.apache.httpcomponents</groupId>
<artifactId>httpclient</artifactId>
<version>4.5.2</version>
</dependency>import java.net.SocketTimeoutException;
import java.net.UnknownHostException;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import org.apache.http.Consts;
import org.apache.http.HttpEntity;
import org.apache.http.HttpStatus;
import org.apache.http.NameValuePair;
import org.apache.http.client.config.RequestConfig;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.conn.ConnectTimeoutException;
import org.apache.http.conn.HttpHostConnectException;
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.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class HttpUtils {
// 日志对象
protected static Logger logger = LoggerFactory.getLogger(HttpUtils.class);
/** 编码格式。发送编码格式统一用UTF-8 */
public static String ENCODING = "UTF-8";
/**
*
* @Title httpPostMap
* @Description 基于HttpClient 4.3的通用POST方法,参数为map对象
* @param url 请求url
* @param param 参数，map对象
* @return
* @version
*/
public static String httpPostMap(String url, Map<String, String> param) {
CloseableHttpClient client = HttpClients.createDefault();
String result = "";
CloseableHttpResponse response = null;
try {
// 1.封装查询参数
List<NameValuePair> paramList = new ArrayList<NameValuePair>();
Iterator<Map.Entry<String, String>> iter = param.entrySet().iterator();
while (iter.hasNext()) {
Map.Entry<String, String> me = iter.next();
paramList.add(new BasicNameValuePair(me.getKey(), me.getValue()));
}
// 2.获取链接
HttpPost method = new HttpPost(url);
// 设置连接超时，连接超时指的是连接一个url的连接等待时间。，时间为3秒
// 设置读取数据超时，读取超时指的是连接上一个url，获取response的返回等待时间
// 设置请求和传输超时时间
RequestConfig requestConfig = RequestConfig.custom().setSocketTimeout(15000).setConnectTimeout(15000).build();
method.setConfig(requestConfig);
method.setEntity(new UrlEncodedFormEntity(paramList, "UTF-8"));
// 执行请求
response = client.execute(method);
// 获取返回结果
if (response.getStatusLine().getStatusCode() == HttpStatus.SC_OK) {
HttpEntity entity = response.getEntity();
if (entity != null) {
result = EntityUtils.toString(entity, ENCODING);
}
}
} catch (HttpHostConnectException e) {
logger.error("HttpUtils-postMap失败，找不到访问地址");
result = "{\"status\":\"500\",\"info\":\"找不到访问地址\"}";
} catch (UnknownHostException e) {
logger.error("HttpUtils-postMap失败，找不到访问地址");
result = "{\"status\":\"500\",\"info\":\"找不到访问地址\"}";
} catch (SocketTimeoutException e) {
logger.error("HttpUtils-postMap失败，连接超时");
result = "{\"status\":\"500\",\"info\":\"连接超时\"}";
} catch (ConnectTimeoutException e) {
logger.error("HttpUtils-postMap失败，连接超时");
result = "{\"status\":\"500\",\"info\":\"连接超时\"}";
} catch (Exception e) {
logger.error("HttpUtils-postMap失败", e);
result = "{\"status\":\"500\",\"info\":\"连接失败\"}";
} finally {
try {
if (response != null) {
response.close();
}
} catch (Exception e) {
logger.error("HttpUtils-postMap失败", e);
}
}
return result;
}
/**
* 基于HttpClient 4.3的通用GET方法
*
* @Title httpGetMap
* @Description 基于HttpClient 4.3的通用GET方法
* @param url 请求url
* @param param 参数，map对象
* @return
* @version
*/
public static String httpGetMap(String url, Map<String, String> param) {
CloseableHttpClient client = HttpClients.createDefault();
String result = "";
CloseableHttpResponse response = null;
try {
// 1.封装参数
List<NameValuePair> paramList = new ArrayList<NameValuePair>();
Iterator<Map.Entry<String, String>> iter = param.entrySet().iterator();
while (iter.hasNext()) {
Map.Entry<String, String> me = iter.next();
paramList.add(new BasicNameValuePair(me.getKey(), me.getValue()));
}
// 转换为键值对
String param_url = EntityUtils.toString(new UrlEncodedFormEntity(paramList, Consts.UTF_8));
// 2.获取链接
HttpGet httpget = new HttpGet(url + "?" + param_url);
// 设置连接超时，连接超时指的是连接一个url的连接等待时间。，时间为15秒
// 设置读取数据超时，读取超时指的是连接上一个url，获取response的返回等待时间
// 设置请求和传输超时时间
RequestConfig requestConfig = RequestConfig.custom().setSocketTimeout(15000).setConnectTimeout(15000).build();
httpget.setConfig(requestConfig);
httpget.setHeader("User-Agent", "Mozilla/5.0 (Windows NT 6.1; rv:6.0.2) Gecko/20100101 Firefox/6.0.2");
response = client.execute(httpget);
HttpEntity entity = response.getEntity();
if (entity != null) {
result = EntityUtils.toString(entity, ENCODING);
}
} catch (HttpHostConnectException e) {
logger.error("HttpUtils-httpGet失败，找不到访问地址");
result = "{\"status\":\"500\",\"info\":\"找不到访问地址\"}";
} catch (UnknownHostException e) {
logger.error("HttpUtils-httpGet失败，找不到访问地址");
result = "{\"status\":\"500\",\"info\":\"找不到访问地址\"}";
} catch (SocketTimeoutException e) {
logger.error("HttpUtils-httpGet失败，连接超时");
result = "{\"status\":\"500\",\"info\":\"连接超时\"}";
} catch (ConnectTimeoutException e) {
logger.error("HttpUtils-httpGet失败，连接超时");
result = "{\"status\":\"500\",\"info\":\"连接超时\"}";
} catch (Exception e) {
logger.error("HttpUtils-httpGet失败", e);
result = "{\"status\":\"500\",\"info\":\"连接失败\"}";
} finally {
try {
if (response != null) {
response.close();
}
} catch (Exception e) {
logger.error("HttpUtils-httpGet失败", e);
}
}
return result;
}
}