httpclient 4.3.1 post get的工具类
package com.ryx.util;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import org.apache.commons.lang.StringUtils;
import org.apache.http.HttpEntity;
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.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClientBuilder;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.util.EntityUtils;
/**
` * 基于 httpclient 4.3.1版本的 http工具类`
` * @author mcSui`
` *`
` */`
public class HttpTookit {
` private`static final CloseableHttpClient httpClient;
` public`static final String CHARSET = "UTF-8" ;
` static`{
` RequestConfig config = RequestConfig.custom().setConnectTimeout(`60000 ).setSocketTimeout( 15000 ).build();
` httpClient = HttpClientBuilder.create().setDefaultRequestConfig(config).build();`
` }`
` public`static String doGet(String url, Map<String, String> params){
` return`doGet(url, params,CHARSET);
` }`
` public`static String doPost(String url, Map<String, String> params){
` return`doPost(url, params,CHARSET);
` }`
` /**`
` * HTTP Get 获取内容`
` * @param url 请求的url地址 ?之前的地址`
` * @param params 请求的参数`
` * @param charset 编码格式`
` * @return 页面内容`
` */`
` public`static String doGet(String url,Map<String,String> params,String charset){
` if`(StringUtils.isBlank(url)){
` return`null ;
` }`
` try`{
` if`(params != null && !params.isEmpty()){
` List`new ArrayList<NameValuePair>(params.size());
` for`(Map.Entry<String,String> entry : params.entrySet()){
` String value = entry.getValue();`
` if`(value != null ){
` pairs.add(`new BasicNameValuePair(entry.getKey(),value));
` }`
` }`
` url += `"?" + EntityUtils.toString( new UrlEncodedFormEntity(pairs, charset));
` }`
` HttpGet httpGet = `new HttpGet(url);
` CloseableHttpResponse response = httpClient.execute(httpGet);`
` int`statusCode = response.getStatusLine().getStatusCode();
` if`(statusCode != 200 ) {
` httpGet.abort();`
` throw`new RuntimeException( "HttpClient,error status code :" + statusCode);
` }`
` HttpEntity entity = response.getEntity();`
` String result = `null ;
` if`(entity != null ){
` result = EntityUtils.toString(entity, `"utf-8" );
` }`
` EntityUtils.consume(entity);`
` response.close();`
` return`result;
` } `catch (Exception e) {
` e.printStackTrace();`
` }`
` return`null ;
` }`
` /**`
` * HTTP Post 获取内容`
` * @param url 请求的url地址 ?之前的地址`
` * @param params 请求的参数`
` * @param charset 编码格式`
` * @return 页面内容`
` */`
` public`static String doPost(String url,Map<String,String> params,String charset){
` if`(StringUtils.isBlank(url)){
` return`null ;
` }`
` try`{
` List`null ;
` if`(params != null && !params.isEmpty()){
` pairs = `new ArrayList<NameValuePair>(params.size());
` for`(Map.Entry<String,String> entry : params.entrySet()){
` String value = entry.getValue();`
` if`(value != null ){
` pairs.add(`new BasicNameValuePair(entry.getKey(),value));
` }`
` }`
` }`
` HttpPost httpPost = `new HttpPost(url);
` if`(pairs != null && pairs.size() > 0 ){
` httpPost.setEntity(`new UrlEncodedFormEntity(pairs,CHARSET));
` }`
` CloseableHttpResponse response = httpClient.execute(httpPost);`
` int`statusCode = response.getStatusLine().getStatusCode();
` if`(statusCode != 200 ) {
` httpPost.abort();`
` throw`new RuntimeException( "HttpClient,error status code :" + statusCode);
` }`
` HttpEntity entity = response.getEntity();`
` String result = `null ;
` if`(entity != null ){
` result = EntityUtils.toString(entity, `"utf-8" );
` }`
` EntityUtils.consume(entity);`
` response.close();`
` return`result;
` } `catch (Exception e) {
` e.printStackTrace();`
` }`
` return`null ;
` }`
` public`static void main(String []args){
` String getData = doGet(`"http://www.oschina.net/" , null );
` System.out.println(getData);`
` System.out.println(`"----------------------分割线-----------------------" );
` String postData = doPost(`"http://www.oschina.net/" , null );
` System.out.println(postData);`
` }`
}
``
``
``
ps：最新的httpclientjar包现在：http://hc.apache.org/downloads.cgi
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