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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)
@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.