import java.io.BufferedOutputStream;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.UnsupportedEncodingException;
import java.net.URLEncoder;
import java.util.HashMap;
import java.util.Map;
import java.util.Map.Entry;
import org.apache.commons.httpclient.DefaultHttpMethodRetryHandler;
import org.apache.commons.httpclient.Header;
import org.apache.commons.httpclient.HttpClient;
import org.apache.commons.httpclient.HttpException;
import org.apache.commons.httpclient.HttpStatus;
import org.apache.commons.httpclient.NameValuePair;
import org.apache.commons.httpclient.methods.GetMethod;
import org.apache.commons.httpclient.methods.PostMethod;
import org.apache.commons.httpclient.methods.RequestEntity;
import org.apache.commons.httpclient.methods.StringRequestEntity;
import org.apache.commons.httpclient.params.HttpMethodParams;
import org.apache.http.HttpResponse;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.entity.mime.MultipartEntity;
import org.apache.http.entity.mime.content.FileBody;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
*
*
* @Description apache http 工具包
* @author gqwang
* @date 2016年1月26日下午3:21:17
*
*/
public class HttpClientUtil {
private static final Logger logger = LoggerFactory
.getLogger(HttpClientUtil.class);
private static String CHARSET = "UTF-8";
/**
* 用httpclient 发送post 请求 如果参数为null,会转化成""
*
* @param url
* @param params
* @return
*/
public static String httpPost(String url, Map<String, Object> params) {
String result = null;
HttpClient client = new HttpClient();
PostMethod post = new PostMethod(url);
post.addRequestHeader("Content-Type", "text/html;charset=" + CHARSET);
if (params != null && !params.isEmpty()) {
for (Map.Entry<String, Object> en : params.entrySet()) {
String key = en.getKey();
String value = en.getValue().toString();
if (!StringUtil.isNotBlank(value)) {
value = "";
}
NameValuePair v = new NameValuePair(key, value);
post.addParameter(v);
}
}
// 设置发送内容的编码 post 设置了header 这里可以不用设置
// client.getParams().setParameter(HttpMethodParams.HTTP_CONTENT_CHARSET,
// CHARSET);
try {
client.executeMethod(post);
if (post.getStatusCode() == HttpStatus.SC_OK) {
result = post.getResponseBodyAsString();
}
} catch (HttpException e) {
logger.error("httpclient send post error", e);
} catch (IOException e) {
logger.error("httpclient send post error", e);
} finally {
post.releaseConnection();
}
return result;
}
public static String httpPost(String url, Map<String, Object> params,
Map<String, String> headerParams) {
String result = null;
HttpClient client = new HttpClient();
PostMethod post = new PostMethod(url);
post.addRequestHeader("Content-Type", "text/html;charset=" + CHARSET);
if (headerParams != null && !headerParams.isEmpty()) {
for (Map.Entry<String, String> en : headerParams.entrySet()) {
String k = en.getKey();
String v = en.getValue();
if (!StringUtil.isNotBlank(v)) {
v = "";
}
post.addRequestHeader(k, v);
}
}
if (params != null && !params.isEmpty()) {
for (Map.Entry<String, Object> en : params.entrySet()) {
String key = en.getKey();
String value = en.getValue().toString();
if (!StringUtil.isNotBlank(value)) {
value = "";
}
NameValuePair v = new NameValuePair(key, value);
post.addParameter(v);
}
}
try {
client.executeMethod(post);
if (post.getStatusCode() == HttpStatus.SC_OK) {
result = post.getResponseBodyAsString();
}
} catch (HttpException e) {
logger.error("httpclient send post error", e);
} catch (IOException e) {
logger.error("httpclient send post error", e);
} finally {
post.releaseConnection();
}
return result;
}
public static String httpGet(String url) {
return httpGet(url, null);
}
public static String httpGet(String url, Map<String, String> params) {
return httpGet(url, params, null);
}
public static File httpGetFile(String url, String fileName, String suffix) {
byte[] bytes = httpGetBytes(url);
File file = null;
try {
file = File.createTempFile(fileName, suffix);
BufferedOutputStream bos = null;
FileOutputStream fos = null;
try {
fos = new FileOutputStream(file);
bos = new BufferedOutputStream(fos);
bos.write(bytes);
} finally {
if (bos != null) {
bos.close();
}
if (fos != null) {
fos.close();
}
}
} catch (IOException e) {
e.printStackTrace();
}
return file;
}
public static byte[] httpGetBytes(String url) {
return httpGetBytes(url, null, null);
}
public static byte[] httpGetBytes(String url, Map<String, String> params,
Map<String, String> headers) {
byte[] bs = null;
HttpClient client = new HttpClient();
StringBuffer sb = new StringBuffer(url);
sb.append("?");
if (params != null && !params.isEmpty()) {
for (Map.Entry<String, String> en : params.entrySet()) {
String key = en.getKey();
String value = en.getValue();
if (StringUtil.isBlank(value)) {
value = "";
} else {
try {
value = URLEncoder.encode(value, CHARSET);
} catch (UnsupportedEncodingException e) {
logger.error("set http get param error", e);
sb.append(key).append("=").append(value).append("&");
continue;
}
}
sb.append(key).append("=").append(value).append("&");
}
// 删除最后一个 & 符号
sb.deleteCharAt(sb.length() - 1);
}
GetMethod get = new GetMethod(sb.toString());
get.addRequestHeader("Content-Type", "text/html;charset=" + CHARSET);
if (headers != null && !params.isEmpty()) {
for (Entry<String, String> en : headers.entrySet()) {
String key = en.getKey();
String value = en.getValue();
get.addRequestHeader(key, value);
}
}
try {
client.executeMethod(get);
if (get.getStatusCode() == HttpStatus.SC_OK) {
bs = get.getResponseBody();
}
} catch (HttpException e) {
logger.error("httpclient send get error", e);
} catch (IOException e) {
logger.error("httpclient send get error", e);
} finally {
get.releaseConnection();
}
return bs;
}
public static String httpGet(String url, Map<String, String> params,
Map<String, String> headers, Integer millisecond) {
String result = null;
HttpClient client = new HttpClient();
StringBuffer sb = new StringBuffer(url);
sb.append("?");
if (params != null && !params.isEmpty()) {
for (Map.Entry<String, String> en : params.entrySet()) {
String key = en.getKey();
String value = en.getValue();
if (StringUtil.isBlank(value)) {
value = "";
} else {
try {
value = URLEncoder.encode(value, CHARSET);
} catch (UnsupportedEncodingException e) {
logger.error("set http get param error", e);
sb.append(key).append("=").append(value).append("&");
continue;
}
}
sb.append(key).append("=").append(value).append("&");
}
// 删除最后一个 & 符号
sb.deleteCharAt(sb.length() - 1);
}
GetMethod get = new GetMethod(sb.toString());
get.addRequestHeader("Content-Type", "text/html;charset=" + CHARSET);
// 设置超时时间
if(millisecond != null && millisecond > 0){
get.getParams().setParameter(HttpMethodParams.SO_TIMEOUT, millisecond);
}
if (headers != null && !headers.isEmpty()) {
for (Entry<String, String> en : headers.entrySet()) {
String key = en.getKey();
String value = en.getValue();
get.addRequestHeader(key, value);
}
}
try {
client.executeMethod(get);
if (get.getStatusCode() == HttpStatus.SC_OK) {
result = get.getResponseBodyAsString();
}
} catch (HttpException e) {
logger.error("httpclient send get error", e);
} catch (IOException e) {
logger.error("httpclient send get error", e);
} finally {
get.releaseConnection();
}
return result;
}
public static String httpGet(String url, Map<String, String> params,
Map<String, String> headers) {
return httpGet(url, params, headers, null);
}
/**
* 返回responseBoby和responseHeader
*
* @param url
* @param params
* @return
*/
public static Map<String, Object> httpGetResultMap(String url,
Map<String, String> params) {
Map<String, Object> result = new HashMap<String, Object>();
HttpClient client = new HttpClient();
StringBuffer sb = new StringBuffer(url);
sb.append("?");
if (params != null && !params.isEmpty()) {
for (Map.Entry<String, String> en : params.entrySet()) {
String key = en.getKey();
String value = en.getValue();
if (!StringUtil.isNotBlank(value)) {
value = "";
} else {
try {
value = URLEncoder.encode(value, CHARSET);
} catch (UnsupportedEncodingException e) {
logger.error("set http get param error", e);
sb.append(key).append("=").append(value).append("&");
continue;
}
}
sb.append(key).append("=").append(value).append("&");
}
// 删除最后一个 & 符号
sb.deleteCharAt(sb.length() - 1);
}
GetMethod get = new GetMethod(sb.toString());
get.addRequestHeader("Content-Type", "text/html;charset=" + CHARSET);
try {
client.executeMethod(get);
if (get.getStatusCode() == HttpStatus.SC_OK) {
String respBody = get.getResponseBodyAsString();
Header[] respHeader = get.getResponseHeaders();
result.put("respBody", respBody);
result.put("respHeader", respHeader);
}
} catch (HttpException e) {
logger.error("httpclient send get error", e);
} catch (IOException e) {
logger.error("httpclient send get error", e);
} finally {
get.releaseConnection();
}
return result;
}
/**
* 上传文件，返回文件地址
*
* @param url
* @param file
* @return
* @throws FileNotFoundException
*/
public static String postFile(String url, File file) {
org.apache.http.client.HttpClient client = new org.apache.http.impl.client.DefaultHttpClient();
HttpPost post = new HttpPost(url);
try {
MultipartEntity me = new MultipartEntity();
me.addPart("file", new FileBody(file));
post.setEntity(me);
HttpResponse response = client.execute(post);
int statusCode = response.getStatusLine().getStatusCode();
if (statusCode == HttpStatus.SC_OK) {
return inputStreamToString(response.getEntity().getContent());
}
} catch (Exception e) {
logger.error("httpclient send post error", e);
} finally {
post.releaseConnection();
}
return null;
}
/**
* 输入流转成字符串
*
* @param is
* @return
*/
public static String inputStreamToString(InputStream is) {
BufferedReader reader = new BufferedReader(new InputStreamReader(is),
16 * 1024); // 强制缓存大小为16KB，一般Java类默认为8KB
StringBuilder sb = new StringBuilder();
String line = null;
try {
while ((line = reader.readLine()) != null) { // 处理换行符
sb.append(line + "\n");
}
} catch (IOException e) {
e.printStackTrace();
} finally {
try {
reader.close();
} catch (IOException e) {
e.printStackTrace();
}
}
return sb.toString();
}
/**
* 发送json参数的post方法
*
* @param url
* 发送地址
* @param json
* 字符型的json参数
* @return 状态码
*/
public static String postJson(String url, String json) {
HttpClient client = new HttpClient();
PostMethod method = new PostMethod(url);
try {
RequestEntity se = new StringRequestEntity(json,
"application/json", CHARSET);
method.setRequestEntity(se);
// 使用系统提供的默认的恢复策略
method.getParams().setParameter(HttpMethodParams.RETRY_HANDLER,
new DefaultHttpMethodRetryHandler());
// 设置超时的时间5m
method.getParams().setParameter(HttpMethodParams.SO_TIMEOUT, 5000);
int status = client.executeMethod(method);
if (status == HttpStatus.SC_OK) {
return method.getResponseBodyAsString();
}
return method.getResponseBodyAsString();
} catch (Exception e) {
e.printStackTrace();
return null;
}
}
}
