Java利用httpclient通过get、post方式调用https接口的方法

httpclient client = new defaulthttpclient();

httppost post = new httppost(http: //127.0.0.1/login);

<dependency>

  <groupid>org.apache.httpcomponents</groupid>

  <artifactid>httpclient</artifactid>

  <version> 4.5 . 5 </version>

</dependency>

<dependency>

  <groupid>com.alibaba</groupid>

  <artifactid>fastjson</artifactid>

  <version> 1.2 . 47 </version>

</dependency>

import java.security.cert.certificateexception;

import java.security.cert.x509certificate;

import javax.net.ssl.sslcontext;

import javax.net.ssl.trustmanager;

import javax.net.ssl.x509trustmanager;

import org.apache.http.conn.clientconnectionmanager;

import org.apache.http.conn.scheme.scheme;

import org.apache.http.conn.scheme.schemeregistry;

import org.apache.http.conn.ssl.sslsocketfactory;

import org.apache.http.impl.client.defaulthttpclient;

public class sslclient extends defaulthttpclient {

  public sslclient() throws exception{

   super ();

   sslcontext ctx = sslcontext.getinstance( "tls" );

   x509trustmanager tm = new x509trustmanager() {

     @override

     public void checkclienttrusted(x509certificate[] chain,

       string authtype) throws certificateexception {

     }

     @override

     public void checkservertrusted(x509certificate[] chain,

       string authtype) throws certificateexception {

     }

     @override

     public x509certificate[] getacceptedissuers() {

      return null ;

     }

   };

   ctx.init( null , new trustmanager[]{tm}, null );

   sslsocketfactory ssf = new sslsocketfactory(ctx,sslsocketfactory.allow_all_hostname_verifier);

   clientconnectionmanager ccm = this .getconnectionmanager();

   schemeregistry sr = ccm.getschemeregistry();

   sr.register( new scheme( "https" , 443 , ssf));

  }

}

import org.apache.http.httpentity;

import org.apache.http.httpresponse;

import org.apache.http.statusline;

import org.apache.http.client.httpclient;

import org.apache.http.client.methods.httpget;

import org.apache.http.client.methods.httppost;

import org.apache.http.entity.stringentity;

import org.apache.http.message.basicheader;

import org.apache.http.util.entityutils;

public class httpclientutil {

  public static string doget(string url,string charset) throws exception{

   httpclient httpclient = null ;

   httpget httpget = null ;

   string result = null ;

    httpclient = new sslclient();

    httpget = new httpget(url);

    httpget.addheader( "content-type" , "application/json" );

    httpget.setentity(se);

    httpresponse response = httpclient.execute(httpget);

    if (response != null ){

     httpentity resentity = response.getentity();

     if (resentity != null ){

      result = entityutils.tostring(resentity,charset);

     }

    }

   return result;

  }

  public static string dopost(string url,string json,string charset) throws exception{

   httpclient httpclient = null ;

   httppost httppost = null ;

   string result = null ;

    httpclient = new sslclient();

    httppost = new httppost(url);

    httppost.addheader( "content-type" , "application/json" );

    stringentity se = new stringentity(json);

    se.setcontenttype( "text/json" );

    se.setcontentencoding( new basicheader( "content-type" , "application/json" ));

    httppost.setentity(se);

    httpresponse response = httpclient.execute(httppost);

    if (response != null ){

     httpentity resentity = response.getentity();

     if (resentity != null ){

      result = entityutils.tostring(resentity,charset);

     }

    }

   return result;

  } 

}

public static void main(string[] args) throws exception{

   string url = "https://127.0.0.1/getuser" ;

   string json = "{\"id\":1}" ;

   string str = httpclientutil.dopost(url, json, "utf-8" );

   system.out.println(str);

  }

public static void main(string[] args) throws exception{

   string url = "https://127.0.0.1/getuser?id=1" ;

   string str = httpclientutil.dopost(url, "utf-8" );

   system.out.println(str);

  }

httppost.addheader( "content-type" , " application/x-www-form-urlencoded" );

list<namevaluepair> params= new arraylist<>();

params.add( new basicnamevaluepair( "key1" , "value1" ));

params.add( new basicnamevaluepair( "key2" , "value2" ));

params.add( new basicnamevaluepair( "key3" , "value3" ));

urlencodedformentity entity= new urlencodedformentity(params, "utf-8" );

httppost.setentity(entity);