Java用HttpClient3发送http/https协议get/post请求，发送map，jso

使用的是httpclient 3.1，

使用"httpclient"4的写法相对简单点，百度：httpclient https post

当不需要使用任何证书访问https网页时，只需配置信任任何证书

其中信任任何证书的类MySSLProtocolSocketFactory

主要代码：

HttpClient client = new HttpClient();    
Protocol myhttps = new Protocol("https", new MySSLProtocolSocketFactory(), 443);   
Protocol.registerProtocol("https", myhttps);
PostMethod method = new PostMethod(url);

HttpUtil

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Java代码

1. package com.urthinker.wxyh.util;  

2.   

3. import java.io.BufferedReader;  

4. import java.io.IOException;  

5. import java.io.InputStreamReader;  

6. import java.util.Map;  

7.   

8. import org.apache.commons.httpclient.HttpClient;  

9. import org.apache.commons.httpclient.HttpMethod;  

10. import org.apache.commons.httpclient.HttpStatus;  

11. import org.apache.commons.httpclient.URIException;  

12. import org.apache.commons.httpclient.methods.GetMethod;  

13. import org.apache.commons.httpclient.methods.PostMethod;  

14. import org.apache.commons.httpclient.methods.RequestEntity;  

15. import org.apache.commons.httpclient.methods.StringRequestEntity;  

16. import org.apache.commons.httpclient.params.HttpMethodParams;  

17. import org.apache.commons.httpclient.protocol.Protocol;  

18. import org.apache.commons.httpclient.util.URIUtil;  

19. import org.apache.commons.lang.StringUtils;  

20. import org.apache.commons.logging.Log;  

21. import org.apache.commons.logging.LogFactory;  

22.     

23. /**    

24. * HTTP工具类 

25. * 发送http/https协议get/post请求，发送map，json，xml，txt数据 

26. *    

27. * @author happyqing 2016-5-20   

28. */      

29. public final class HttpUtil {      

30.         private static Log log = LogFactory.getLog(HttpUtil.class);      

31.     

32.         /** 

33.          * 执行一个http/https get请求，返回请求响应的文本数据 

34.          *  

35.          * @param url           请求的URL地址 

36.          * @param queryString   请求的查询参数,可以为null 

37.          * @param charset       字符集 

38.          * @param pretty        是否美化 

39.          * @return              返回请求响应的文本数据 

40.          */  

41.         public static String doGet(String url, String queryString, String charset, boolean pretty) {     

42.                 StringBuffer response = new StringBuffer();  

43.                 HttpClient client = new HttpClient();  

44.                 if(url.startsWith("https")){  

45.                     //https请求  

46.                     Protocol myhttps = new Protocol("https", new MySSLProtocolSocketFactory(), 443);     

47.                     Protocol.registerProtocol("https", myhttps);  

48.                 }  

49.                 HttpMethod method = new GetMethod(url);  

50.                 try {  

51.                         if (StringUtils.isNotBlank(queryString))      

52.                             //对get请求参数编码，汉字编码后，就成为%式样的字符串  

53.                             method.setQueryString(URIUtil.encodeQuery(queryString));  

54.                         client.executeMethod(method);  

55.                         if (method.getStatusCode() == HttpStatus.SC_OK) {  

56.                             BufferedReader reader = new BufferedReader(new InputStreamReader(method.getResponseBodyAsStream(), charset));  

57.                             String line;  

58.                             while ((line = reader.readLine()) != null) {  

59.                                 if (pretty)  

60.                                     response.append(line).append(System.getProperty("line.separator"));  

61.                                 else  

62.                                     response.append(line);  

63.                             }  

64.                             reader.close();  

65.                         }  

66.                 } catch (URIException e) {  

67.                     log.error("执行Get请求时，编码查询字符串“" + queryString + "”发生异常！", e);  

68.                 } catch (IOException e) {  

69.                     log.error("执行Get请求" + url + "时，发生异常！", e);  

70.                 } finally {  

71.                     method.releaseConnection();  

72.                 }  

73.                 return response.toString();  

74.         }      

75.     

76.         /** 

77.          * 执行一个http/https post请求，返回请求响应的文本数据 

78.          *  

79.          * @param url       请求的URL地址 

80.          * @param params    请求的查询参数,可以为null 

81.          * @param charset   字符集 

82.          * @param pretty    是否美化 

83.          * @return          返回请求响应的文本数据 

84.          */  

85.         public static String doPost(String url, Map params, String charset, boolean pretty) {  

86.                 StringBuffer response = new StringBuffer();  

87.                 HttpClient client = new HttpClient();  

88.                 if(url.startsWith("https")){  

89.                     //https请求  

90.                     Protocol myhttps = new Protocol("https", new MySSLProtocolSocketFactory(), 443);  

91.                     Protocol.registerProtocol("https", myhttps);  

92.                 }  

93.                 PostMethod method = new PostMethod(url);  

94.                 //设置参数的字符集  

95.                 method.getParams().setParameter(HttpMethodParams.HTTP_CONTENT_CHARSET,charset);  

96.                 //设置post数据  

97.                 if (params != null) {  

98.                     //HttpMethodParams p = new HttpMethodParams();      

99.                     for (Map.Entry entry : params.entrySet()) {  

100.                         //p.setParameter(entry.getKey(), entry.getValue());     

101.                         method.setParameter(entry.getKey(), entry.getValue());  

102.                     }  

103.                     //method.setParams(p);  

104.                 }  

105.                 try {  

106.                         client.executeMethod(method);  

107.                         if (method.getStatusCode() == HttpStatus.SC_OK) {  

108.                             BufferedReader reader = new BufferedReader(new InputStreamReader(method.getResponseBodyAsStream(), charset));  

109.                             String line;  

110.                             while ((line = reader.readLine()) != null) {  

111.                                 if (pretty)  

112.                                     response.append(line).append(System.getProperty("line.separator"));  

113.                                 else  

114.                                     response.append(line);   

115.                             }  

116.                             reader.close();  

117.                         }  

118.                 } catch (IOException e) {  

119.                     log.error("执行Post请求" + url + "时，发生异常！", e);  

120.                 } finally {  

121.                     method.releaseConnection();  

122.                 }  

123.                 return response.toString();  

124.         }  

125.           

126.         /** 

127.          * 执行一个http/https post请求， 直接写数据 json,xml,txt 

128.          *  

129.          * @param url       请求的URL地址 

130.          * @param params    请求的查询参数,可以为null 

131.          * @param charset   字符集 

132.          * @param pretty    是否美化 

133.          * @return          返回请求响应的文本数据 

134.          */  

135.         public static String writePost(String url, String content, String charset, boolean pretty) {   

136.                 StringBuffer response = new StringBuffer();  

137.                 HttpClient client = new HttpClient();  

138.                 if(url.startsWith("https")){  

139.                     //https请求  

140.                     Protocol myhttps = new Protocol("https", new MySSLProtocolSocketFactory(), 443);  

141.                     Protocol.registerProtocol("https", myhttps);  

142.                 }  

143.                 PostMethod method = new PostMethod(url);  

144.                 try {  

145.                         //设置请求头部类型参数  

146.                         //method.setRequestHeader("Content-Type","text/plain; charset=utf-8");//application/json,text/xml,text/plain  

147.                         //method.setRequestBody(content); //InputStream,NameValuePair[],String  

148.                         //RequestEntity是个接口，有很多实现类，发送不同类型的数据  

149.                         RequestEntity requestEntity = new StringRequestEntity(content,"text/plain",charset);//application/json,text/xml,text/plain  

150.                         method.setRequestEntity(requestEntity);  

151.                         client.executeMethod(method);  

152.                         if (method.getStatusCode() == HttpStatus.SC_OK) {    

153.                             BufferedReader reader = new BufferedReader(new InputStreamReader(method.getResponseBodyAsStream(), charset));  

154.                             String line;  

155.                             while ((line = reader.readLine()) != null) {  

156.                                 if (pretty)  

157.                                     response.append(line).append(System.getProperty("line.separator"));  

158.                                 else  

159.                                     response.append(line);  

160.                             }  

161.                             reader.close();  

162.                         }      

163.                 } catch (Exception e) {  

164.                     log.error("执行Post请求" + url + "时，发生异常！", e);  

165.                 } finally {  

166.                     method.releaseConnection();  

167.                 }  

168.                 return response.toString();  

169.         }  

170.     

171.         public static void main(String[] args) {  

172.             try {  

173.                 String y = doGet("http://video.sina.com.cn/life/tips.html", null, "GBK", true);  

174.                 System.out.println(y);  

175. //              Map params = new HashMap();  

176. //              params.put("param1", "value1");  

177. //              params.put("json", "{\"aa\":\"11\"}");  

178. //              String j = doPost("http://localhost/uplat/manage/test.do?reqCode=add", params, "UTF-8", true);  

179. //              System.out.println(j);  

180.   

181.             } catch (Exception e) {  

182.                 // TODO Auto-generated catch block  

183.                 e.printStackTrace();  

184.             }  

185.         }  

186.   

187. }  

MySSLProtocolSocketFactory

Java代码 

1. import java.io.IOException;  

2. import java.net.InetAddress;  

3. import java.net.InetSocketAddress;  

4. import java.net.Socket;  

5. import java.net.SocketAddress;  

6. import java.net.UnknownHostException;  

7. import java.security.KeyManagementException;  

8. import java.security.NoSuchAlgorithmException;  

9. import java.security.cert.CertificateException;  

10. import java.security.cert.X509Certificate;  

11.   

12. import javax.net.SocketFactory;  

13. import javax.net.ssl.SSLContext;  

14. import javax.net.ssl.TrustManager;  

15. import javax.net.ssl.X509TrustManager;  

16.   

17. import org.apache.commons.httpclient.ConnectTimeoutException;  

18. import org.apache.commons.httpclient.params.HttpConnectionParams;  

19. import org.apache.commons.httpclient.protocol.ProtocolSocketFactory;  

20.   

21. /** 

22.  * author by lpp 

23.  *  

24.  * created at 2010-7-26 上午09:29:33 

25.  */  

26. public class MySSLProtocolSocketFactory implements ProtocolSocketFactory {  

27.   

28.     private SSLContext sslcontext = null;  

29.   

30.     private SSLContext createSSLContext() {  

31.         SSLContext sslcontext = null;  

32.         try {  

33.             // sslcontext = SSLContext.getInstance("SSL");  

34.             sslcontext = SSLContext.getInstance("TLS");  

35.             sslcontext.init(null,  

36.                     new TrustManager[] { new TrustAnyTrustManager() },  

37.                     new java.security.SecureRandom());  

38.         } catch (NoSuchAlgorithmException e) {  

39.             e.printStackTrace();  

40.         } catch (KeyManagementException e) {  

41.             e.printStackTrace();  

42.         }  

43.         return sslcontext;  

44.     }  

45.   

46.     private SSLContext getSSLContext() {  

47.         if (this.sslcontext == null) {  

48.             this.sslcontext = createSSLContext();  

49.         }  

50.         return this.sslcontext;  

51.     }  

52.   

53.     public Socket createSocket(Socket socket, String host, int port, boolean autoClose)   

54.             throws IOException, UnknownHostException {  

55.         return getSSLContext().getSocketFactory().createSocket(socket, host, port, autoClose);  

56.     }  

57.   

58.     public Socket createSocket(String host, int port) throws IOException, UnknownHostException {  

59.         return getSSLContext().getSocketFactory().createSocket(host, port);  

60.     }  

61.   

62.     public Socket createSocket(String host, int port, InetAddress clientHost, int clientPort)   

63.             throws IOException, UnknownHostException {  

64.         return getSSLContext().getSocketFactory().createSocket(host, port, clientHost, clientPort);  

65.     }  

66.   

67.     public Socket createSocket(String host, int port, InetAddress localAddress,  

68.             int localPort, HttpConnectionParams params) throws IOException,  

69.             UnknownHostException, ConnectTimeoutException {  

70.         if (params == null) {  

71.             throw new IllegalArgumentException("Parameters may not be null");  

72.         }  

73.         int timeout = params.getConnectionTimeout();  

74.         SocketFactory socketfactory = getSSLContext().getSocketFactory();  

75.         if (timeout == 0) {  

76.             return socketfactory.createSocket(host, port, localAddress, localPort);  

77.         } else {  

78.             Socket socket = socketfactory.createSocket();  

79.             SocketAddress localaddr = new InetSocketAddress(localAddress, localPort);  

80.             SocketAddress remoteaddr = new InetSocketAddress(host, port);  

81.             socket.bind(localaddr);  

82.             socket.connect(remoteaddr, timeout);  

83.             return socket;  

84.         }  

85.     }  

86.   

87.     // 自定义私有类  

88.     private static class TrustAnyTrustManager implements X509TrustManager {  

89.   

90.         public void checkClientTrusted(X509Certificate[] chain, String authType) throws CertificateException {  

91.         }  

92.   

93.         public void checkServerTrusted(X509Certificate[] chain, String authType) throws CertificateException {  

94.         }  

95.   

96.         public X509Certificate[] getAcceptedIssuers() {  

97.             return new X509Certificate[] {};  

98.         }  

99.     }  

100.   

101. }  

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