个人感觉这个工具类还是有部分问题：
1.工具类中出现了类似这样的方法重载：
这样不太好，容易产生歧义。
2.String data = detail.get("data").toString;可以使用getString()方法。
3.doPostHttp()方法中的Object json参数实际上传入类型修改为String类型Json，因为毕竟最终都要包装到StringEntity()中。
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今天本来想在网上找一个HttpCline调用第三方借口的方法,现在网上各种版本,自己在以前做过的项目里找到了一个工具类,感觉挺方便的,里面包括了get请求带参数,get不带参数,post带参数,post不带参数!
import org.apache.commons.io.IOUtils;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.HttpStatus;
import org.apache.http.NameValuePair;
import org.apache.http.client.HttpClient;
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.ssl.SSLConnectionSocketFactory;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.impl.conn.PoolingHttpClientConnectionManager;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.util.EntityUtils;
import javax.net.ssl.SSLContext;
import javax.net.ssl.TrustManager;
import javax.net.ssl.X509TrustManager;
import java.io.IOException;
import java.io.InputStream;
import java.nio.charset.Charset;
import java.security.KeyManagementException;
import java.security.NoSuchAlgorithmException;
import java.security.cert.CertificateException;
import java.security.cert.X509Certificate;
import java.text.SimpleDateFormat;
import java.util.*;
/**
* HTTP 请求工具类
*/
public class HttpUtils {
private static PoolingHttpClientConnectionManager connMgr;
private static RequestConfig requestConfig;
private static final int MAX_TIMEOUT = 20000;
static {
// 设置连接池
connMgr = new PoolingHttpClientConnectionManager();
// 设置连接池大小
connMgr.setMaxTotal(100);
connMgr.setDefaultMaxPerRoute(connMgr.getMaxTotal());
RequestConfig.Builder configBuilder = RequestConfig.custom();
// 设置连接超时
configBuilder.setConnectTimeout(MAX_TIMEOUT);
// 设置读取超时
configBuilder.setSocketTimeout(MAX_TIMEOUT);
// 设置从连接池获取连接实例的超时
configBuilder.setConnectionRequestTimeout(MAX_TIMEOUT);
// 在提交请求之前 测试连接是否可用
configBuilder.setStaleConnectionCheckEnabled(true);
requestConfig = configBuilder.build();
}
/**
* 发送 GET 请求（HTTP），不带输入数据
*
* @param url
* @param headers
* 需要添加的httpheader参数
* @return
*/
public static String doGet(String url, Map<String, String> headers, Map<String, Object> params) {
if (url.startsWith("https://")) {
return doGetSSL(url, headers, params);
} else {
return doGetHttp(url, headers, params);
}
}
/**
* 发送 GET 请求（HTTP），K-V形式
*
* @param url
* @param headers
* 需要添加的httpheader参数
* @param params
* @return
*/
public static String doGetHttp(String url, Map<String, String> headers, Map<String, Object> params) {
HttpClient httpclient = new DefaultHttpClient();
String apiUrl = url;
StringBuffer param = new StringBuffer();
int i = 0;
for (String key : params.keySet()) {
if (i == 0)
param.append("?");
else
param.append("&");
param.append(key).append("=").append(params.get(key));
i++;
}
apiUrl += param;
String result = null;
log("url: " + apiUrl);
try {
HttpGet httpGet = new HttpGet(apiUrl);
// 添加http headers
if (headers != null && headers.size() > 0) {
for (String key : headers.keySet()) {
httpGet.addHeader(key, headers.get(key));
}
}
HttpResponse response = httpclient.execute(httpGet);
int statusCode = response.getStatusLine().getStatusCode();
log("code : " + statusCode);
HttpEntity entity = response.getEntity();
if (entity != null) {
InputStream instream = entity.getContent();
result = IOUtils.toString(instream, "UTF-8");
}
} catch (IOException e) {
e.printStackTrace();
}
return result;
}
/**
* 发送 SSL Get 请求（HTTPS），K-V形式
*
* @param apiUrl
* API接口URL
* @param headers
* @param params
* 参数map
* @return
*/
public static String doGetSSL(String url, Map<String, String> headers, Map<String, Object> params) {
CloseableHttpClient httpClient = HttpClients.custom().setSSLSocketFactory(createSSLConnSocketFactory())
.setConnectionManager(connMgr).setDefaultRequestConfig(requestConfig).build();
CloseableHttpResponse response = null;
String apiUrl = url;
String httpStr = null;
StringBuffer param = new StringBuffer();
int i = 0;
for (String key : params.keySet()) {
if (i == 0)
param.append("?");
else
param.append("&");
param.append(key).append("=").append(params.get(key));
i++;
}
apiUrl += param;
log("url: " + apiUrl);
try {
HttpGet httpGet = new HttpGet(apiUrl);
httpGet.setConfig(requestConfig);
// 添加http headers
if (headers != null && headers.size() > 0) {
for (String key : headers.keySet()) {
httpGet.addHeader(key, headers.get(key));
}
}
response = httpClient.execute(httpGet);
int statusCode = response.getStatusLine().getStatusCode();
log("code : " + statusCode);
if (statusCode != HttpStatus.SC_OK) {
return null;
}
HttpEntity entity = response.getEntity();
if (entity == null) {
return null;
}
httpStr = EntityUtils.toString(entity, "utf-8");
} catch (Exception e) {
e.printStackTrace();
} finally {
if (response != null) {
try {
EntityUtils.consume(response.getEntity());
} catch (IOException e) {
e.printStackTrace();
}
}
}
return httpStr;
}
/**
* 发送 POST 请求（HTTP），K-V形式
*
* @param url
* @param headers
* 需要添加的httpheader参数
* @return
*/
public static String doPostByForm(String url, Map<String, String> headers, Map<String, Object> params) {
if (url.startsWith("https://")) {
return doPostSSL(url, headers, params);
} else {
return doPostHttp(url, headers, params);
}
}
/**
* 发送 POST 请求（HTTP），JSON形式
*
* @param url
* @param headers
* 需要添加的httpheader参数
* @return
*/
public static String doPostByJson(String url, Map<String, String> headers, Object json) {
if (url.startsWith("https://")) {
return doPostSSL(url, headers, json);
} else {
return doPostHttp(url, headers, json);
}
}
/**
* 发送 POST 请求（HTTP），K-V形式
*
* @param apiUrl
* API接口URL
* @param headers
* 需要添加的httpheader参数
* @param params
* 参数map
* @return
*/
public static String doPostHttp(String apiUrl, Map<String, String> headers, Map<String, Object> params) {
CloseableHttpClient httpClient = HttpClients.createDefault();
String httpStr = null;
HttpPost httpPost = new HttpPost(apiUrl);
CloseableHttpResponse response = null;
if (headers != null) {
Set<String> keys = headers.keySet();
for (Iterator<String> i = keys.iterator(); i.hasNext();) {
String key = (String) i.next();
httpPost.addHeader(key, headers.get(key));
}
}
try {
httpPost.setConfig(requestConfig);
List<NameValuePair> pairList = new ArrayList<>(params.size());
for (Map.Entry<String, Object> entry : params.entrySet()) {
NameValuePair pair = new BasicNameValuePair(entry.getKey(), entry.getValue().toString());
pairList.add(pair);
}
httpPost.setEntity(new UrlEncodedFormEntity(pairList, Charset.forName("UTF-8")));
response = httpClient.execute(httpPost);
log(response.toString());
HttpEntity entity = response.getEntity();
httpStr = EntityUtils.toString(entity, "UTF-8");
} catch (IOException e) {
e.printStackTrace();
} finally {
if (response != null) {
try {
EntityUtils.consume(response.getEntity());
} catch (IOException e) {
e.printStackTrace();
}
}
}
return httpStr;
}
/**
* 发送 POST 请求（HTTP），JSON形式
*
* @param apiUrl
* @param headers
* 需要添加的httpheader参数
* @param json
* json对象
* @return
*/
public static String doPostHttp(String apiUrl, Map<String, String> headers, Object json) {
CloseableHttpClient httpClient = HttpClients.createDefault();
String httpStr = null;
HttpPost httpPost = new HttpPost(apiUrl);
CloseableHttpResponse response = null;
if (headers != null) {
Set<String> keys = headers.keySet();
for (Iterator<String> i = keys.iterator(); i.hasNext();) {
String key = (String) i.next();
httpPost.addHeader(key, headers.get(key));
}
}
try {
httpPost.setConfig(requestConfig);
StringEntity stringEntity = new StringEntity(json.toString(), "UTF-8");// 解决中文乱码问题
stringEntity.setContentEncoding("UTF-8");
stringEntity.setContentType("application/json");
httpPost.setEntity(stringEntity);
response = httpClient.execute(httpPost);
HttpEntity entity = response.getEntity();
log(response.getStatusLine().getStatusCode() + "");
httpStr = EntityUtils.toString(entity, "UTF-8");
} catch (IOException e) {
e.printStackTrace();
} finally {
if (response != null) {
try {
EntityUtils.consume(response.getEntity());
} catch (IOException e) {
e.printStackTrace();
}
}
}
return httpStr;
}
/**
* 发送 SSL POST 请求（HTTPS），K-V形式
*
* @param apiUrl
* API接口URL
* @param params
* 参数map
* @return
*/
public static String doPostSSL(String apiUrl, Map<String, String> headers, Map<String, Object> params) {
CloseableHttpClient httpClient = HttpClients.custom().setSSLSocketFactory(createSSLConnSocketFactory())
.setConnectionManager(connMgr).setDefaultRequestConfig(requestConfig).build();
HttpPost httpPost = new HttpPost(apiUrl);
CloseableHttpResponse response = null;
String httpStr = null;
if (headers != null) {
Set<String> keys = headers.keySet();
for (Iterator<String> i = keys.iterator(); i.hasNext();) {
String key = (String) i.next();
httpPost.addHeader(key, headers.get(key));
}
}
try {
httpPost.setConfig(requestConfig);
List<NameValuePair> pairList = new ArrayList<NameValuePair>(params.size());
for (Map.Entry<String, Object> entry : params.entrySet()) {
NameValuePair pair = new BasicNameValuePair(entry.getKey(), entry.getValue().toString());
pairList.add(pair);
}
httpPost.setEntity(new UrlEncodedFormEntity(pairList, Charset.forName("utf-8")));
response = httpClient.execute(httpPost);
int statusCode = response.getStatusLine().getStatusCode();
if (statusCode != HttpStatus.SC_OK) {
return null;
}
HttpEntity entity = response.getEntity();
if (entity == null) {
return null;
}
httpStr = EntityUtils.toString(entity, "utf-8");
} catch (Exception e) {
e.printStackTrace();
} finally {
if (response != null) {
try {
EntityUtils.consume(response.getEntity());
} catch (IOException e) {
e.printStackTrace();
}
}
}
return httpStr;
}
/**
* 发送 SSL POST 请求（HTTPS），JSON形式
*
* @param apiUrl
* API接口URL
* @param json
* JSON对象
* @return
*/
public static String doPostSSL(String apiUrl, Map<String, String> headers, Object json) {
CloseableHttpClient httpClient = HttpClients.custom().setSSLSocketFactory(createSSLConnSocketFactory())
.setConnectionManager(connMgr).setDefaultRequestConfig(requestConfig).build();
HttpPost httpPost = new HttpPost(apiUrl);
CloseableHttpResponse response = null;
String httpStr = null;
if (headers != null) {
Set<String> keys = headers.keySet();
for (Iterator<String> i = keys.iterator(); i.hasNext();) {
String key = (String) i.next();
httpPost.addHeader(key, headers.get(key));
}
}
try {
httpPost.setConfig(requestConfig);
StringEntity stringEntity = new StringEntity(json.toString(), "UTF-8");// 解决中文乱码问题
stringEntity.setContentEncoding("UTF-8");
stringEntity.setContentType("application/json");
httpPost.setEntity(stringEntity);
response = httpClient.execute(httpPost);
int statusCode = response.getStatusLine().getStatusCode();
if (statusCode != HttpStatus.SC_OK) {
return null;
}
HttpEntity entity = response.getEntity();
if (entity == null) {
return null;
}
httpStr = EntityUtils.toString(entity, "utf-8");
} catch (Exception e) {
e.printStackTrace();
} finally {
if (response != null) {
try {
EntityUtils.consume(response.getEntity());
} catch (IOException e) {
e.printStackTrace();
}
}
}
return httpStr;
}
/**
* 创建SSL安全连接
*
* @return
* @throws NoSuchAlgorithmException
* @throws KeyManagementException
*/
private static SSLConnectionSocketFactory createSSLConnSocketFactory() {
// 创建TrustManager
X509TrustManager xtm = new X509TrustManager() {
public void checkClientTrusted(X509Certificate[] chain, String authType) throws CertificateException {
}
public void checkServerTrusted(X509Certificate[] chain, String authType) throws CertificateException {
}
public X509Certificate[] getAcceptedIssuers() {
return null;
}
};
// TLS1.0与SSL3.0基本上没有太大的差别，可粗略理解为TLS是SSL的继承者，但它们使用的是相同的SSLContext
SSLContext ctx;
try {
ctx = SSLContext.getInstance("TLS");
// 使用TrustManager来初始化该上下文，TrustManager只是被SSL的Socket所使用
ctx.init(null, new TrustManager[] { xtm }, null);
SSLConnectionSocketFactory sslsf = new SSLConnectionSocketFactory(ctx);
return sslsf;
} catch (NoSuchAlgorithmException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (KeyManagementException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return null;
}
public static void log(String msg) {
System.out.println(new SimpleDateFormat("yyyy-MM-dd HH:mm:ss").format(new Date()) + "\t: " + msg);
}
/**
* 测试方法
*
* @param args
*/
public static void main(String[] args) throws Exception {
}
}
第三方接口调用后就是解析数据了;
String转为json可以使用
String PostString = HttpUtils.doPostByForm(url, headers, params);
JSONObject detail = JSONObject.parseObject(PostString);
String data = detail.get("data").toString;
