/**
* HTTP工具类
*
* @author xxl
*/
public class ZgHttpUtils {
private static Log log = LogFactory.getLog(ZgHttpUtils.class);
/**
* 定义编码格式 UTF-8
*/
public static final String URL_PARAM_DECODECHARSET_UTF8 = "UTF-8";
/**
* 定义编码格式 GBK
*/
public static final String URL_PARAM_DECODECHARSET_GBK = "GBK";
private static final String URL_PARAM_CONNECT_FLAG = "&";
private static final String EMPTY = "";
private static MultiThreadedHttpConnectionManager connectionManager = null;
private static int connectionTimeOut = 25000;
private static int socketTimeOut = 25000;
private static int maxConnectionPerHost = 20;
private static int maxTotalConnections = 20;
private static HttpClient client;
static {
connectionManager = new MultiThreadedHttpConnectionManager();
connectionManager.getParams().setConnectionTimeout(connectionTimeOut);
connectionManager.getParams().setSoTimeout(socketTimeOut);
connectionManager.getParams().setDefaultMaxConnectionsPerHost(maxConnectionPerHost);
connectionManager.getParams().setMaxTotalConnections(maxTotalConnections);
client = new HttpClient(connectionManager);
}
/**
* POST方式提交数据
*
* @param url 待请求的URL
* @param params 要提交的数据
* @param enc 编码
* @return 响应结果
* @throws IOException IO异常
*/
public static String URLPost(String url, Map<String, String> params, String enc) {
String response = EMPTY;
PostMethod postMethod = null;
try {
postMethod = new PostMethod(url);
postMethod.setRequestHeader("Content-Type", "application/x-www-form-urlencoded;charset=" + enc);
//将表单的值放入postMethod中
Set<String> keySet = params.keySet();
for (String key : keySet) {
String value = params.get(key);
postMethod.addParameter(key, value);
}
//执行postMethod
int statusCode = client.executeMethod(postMethod);
if (statusCode == HttpStatus.SC_OK) {
response = postMethod.getResponseBodyAsString();
} else {
log.error("响应状态码 = " + postMethod.getStatusCode());
}
} catch (HttpException e) {
log.error("发生致命的异常,可能是协议不对或者返回的内容有问题", e);
e.printStackTrace();
} catch (IOException e) {
log.error("发生网络异常", e);
e.printStackTrace();
} finally {
if (postMethod != null) {
postMethod.releaseConnection();
postMethod = null;
}
}
return response;
}
/**
* GET方式提交数据
*
* @param url 待请求的URL
* @param params 要提交的数据
* @param enc 编码
* @return 响应结果
* @throws IOException IO异常
*/
public static String URLGet(String url, Map<String, String> params, String enc) {
String response = EMPTY;
GetMethod getMethod = null;
StringBuffer strtTotalURL = new StringBuffer(EMPTY);
if (strtTotalURL.indexOf("?") == -1) {
strtTotalURL.append(url).append("?").append(getUrl(params, enc));
} else {
strtTotalURL.append(url).append("&").append(getUrl(params, enc));
}
log.debug("GET请求URL = \n" + strtTotalURL.toString());
try {
getMethod = new GetMethod(strtTotalURL.toString());
getMethod.setRequestHeader("Content-Type", "application/x-www-form-urlencoded;charset=" + enc);
//执行getMethod
int statusCode = client.executeMethod(getMethod);
if (statusCode == HttpStatus.SC_OK) {
response = getMethod.getResponseBodyAsString();
} else {
log.debug("响应状态码 = " + getMethod.getStatusCode());
}
} catch (HttpException e) {
log.error("发生致命的异常,可能是协议不对或者返回的内容有问题", e);
e.printStackTrace();
} catch (IOException e) {
log.error("发生网络异常", e);
e.printStackTrace();
} finally {
if (getMethod != null) {
getMethod.releaseConnection();
getMethod = null;
}
}
return response;
}
/**
* 据Map生成URL字符串
*
* @param map Map
* @param valueEnc URL编码
* @return URL
*/
private static String getUrl(Map<String, String> map, String valueEnc) {
if (null == map || map.keySet().size() == 0) {
return (EMPTY);
}
StringBuffer url = new StringBuffer();
Set<String> keys = map.keySet();
for (Iterator<String> it = keys.iterator(); it.hasNext(); ) {
String key = it.next();
if (map.containsKey(key)) {
String val = map.get(key);
String str = val != null ? val : EMPTY;
try {
str = URLEncoder.encode(str, valueEnc);
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
}
url.append(key).append("=").append(str).append(URL_PARAM_CONNECT_FLAG);
}
}
String strURL = EMPTY;
strURL = url.toString();
if (URL_PARAM_CONNECT_FLAG.equals(EMPTY + strURL.charAt(strURL.length() - 1))) {
strURL = strURL.substring(0, strURL.length() - 1);
}
return (strURL);
}
}
httputils
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