我們在做Http請求的時候,客戶端會從服務端傳一個複雜的引數,但是,大家知道,用GET請求會出現轉義字元報錯等問題,請求會失敗,這時候我們用POST請求傳引數,注意此方支援時候HTTP和HTTPS兩種協議,在URL上面要標註,我這裡是HTTP協議.

客戶端程式碼一:

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;
//用於進行Https請求的HttpClient
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));
    }
}
 

客戶端程式碼二

import java.util.ArrayList;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.NameValuePair;
import org.apache.http.client.HttpClient;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.util.EntityUtils;
/*
 * 利用HttpClient進行post請求的工具類
 */
public class HttpClientUtil {
	public String doPost(String url,Map<String,String> map,String charset){
		HttpClient httpClient = null;
		HttpPost httpPost = null;
		String result = null;
		try{
			httpClient = new SSLClient();
			httpPost = new HttpPost(url);
			//設定引數
			List<NameValuePair> list = new ArrayList<NameValuePair>();
			Iterator iterator = map.entrySet().iterator();
			while(iterator.hasNext()){
				Entry<String,String> elem = (Entry<String, String>) iterator.next();
				list.add(new BasicNameValuePair(elem.getKey(),elem.getValue()));
			}
			if(list.size() > 0){
				UrlEncodedFormEntity entity = new UrlEncodedFormEntity(list,charset);
				httpPost.setEntity(entity);
			}
			HttpResponse response = httpClient.execute(httpPost);
			if(response != null){
				HttpEntity resEntity = response.getEntity();
				if(resEntity != null){
					result = EntityUtils.toString(resEntity,charset);
				}
			}
		}catch(Exception ex){
			ex.printStackTrace();
		}
		return result;
	}


  

/**測試程式碼,此處注意請求地址必須要有許可權,我這裡用的shiro攔截,因為要登入,為了避免登入,此處要把
 

url 放開,如果你的服務端框架沒有任何攔截器(不用登陸),則不需要做放開許可權的操作,關於shiro使用,可以 諮詢我的QQ:243517277 ***/ 

public static void main(String[] args){  
    String url = "http://127.0.0.1:8080/dlcgsdzda_web/";  
    String charset = "utf-8";  
    HttpClientUtil httpClientUtil = new HttpClientUtil();
    String httpOrgCreateTest = url + "redict/test.do";  
    Map<String,String> createMap = new HashMap<String,String>();  
    createMap.put("name","左國斌");  
    createMap.put("pass","admin");  
    createMap.put("key","@#!`\\\\\\\\");  
    createMap.put("value","<>#
 
[email protected]#%^");  
    createMap.put("url",httpOrgCreateTest);
    String httpOrgCreateTestRtn = httpClientUtil.doPost(httpOrgCreateTest,createMap,charset);  
    System.out.println("result:"+httpOrgCreateTestRtn);  
} 

}

服務端程式碼,我這裡用到的是springMVC,注意可以用@ModelAttribute接受POST請求的引數

package org.aisino.dlcgsController;

import java.util.HashMap;
import java.util.Map;

import javax.servlet.http.HttpServletRequest;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.ModelAttribute;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.ResponseBody;

@Controller
@RequestMapping(value = "/redict")
public class T {

	@RequestMapping(value = "/test", method = RequestMethod.POST)
	@ResponseBody
	public Map<String,Object> test(HttpServletRequest request,
			@ModelAttribute("url")String url,
			@ModelAttribute("name")String name,
			@ModelAttribute("pass")String pass,
			@ModelAttribute("key")String key,
			@ModelAttribute("value")String value
			) {
   	Map<String, Object> map=new HashMap<String, Object>();
   	map.put("url", url);
   	map.put("name", name);
   	map.put("pass", pass);
   	map.put("key", key);
   	map.put("value", value);
   	return map;
   }
}

注意,httpcilent要依賴httpclient-4.4.jar,我這裡上傳了,這裡還包含了其他用途的jar,例如模仿客戶端檔案上傳的jar,都在其中,大家按選擇挑選.