HttpClient POST传参, SpringMVC接受

我们在做Http请求的时候,客户端会从服务端传一个复杂的参数,但是,大家知道,用GET请求会出现转义字符报错等问题,请求会失败,这时候我们用POST请求传参数,注意此方支持时候HTTP和HTTPS两种协议,在URL上面要标注,我这里是HTTP协议.

客户端代码一:

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;//用于进行Https请求的HttpClientpublic 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));    }}

客户端代码二

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进行post请求的工具类 */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);//设置参数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;}  /**测试代码,此处注意请求地址必须要有权限,我这里用的shiro拦截,因为要登录,为了避免登录,此处要把
url 放开,如果你的服务端框架没有任何拦截器(不用登陆),则不需要做放开权限的操作,关于shiro使用,可以咨询我的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","左国斌");  
    createMap.put("pass","admin");  
    createMap.put("key","@#!`\\\\\\\\");  
    createMap.put("value","<>#$@#%^");  
    createMap.put("url",httpOrgCreateTest); 
    String httpOrgCreateTestRtn = httpClientUtil.doPost(httpOrgCreateTest,createMap,charset);  
    System.out.println("result:"+httpOrgCreateTestRtn);  
}  

}
服务端代码,我这里用到的是springMVC,注意可以用@ModelAttribute接受POST请求的参数
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)@ResponseBodypublic 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要依赖httpclient-4.4.jar,我这里上传了,这里还包含了其他用途的jar,例如模仿客户端文件上传的jar,都在其中,大家按选择挑选.