模拟以Form表单方式发送Http请求

电玩女神 2022-06-11 03:53 199阅读 0赞

有的时候我们需要模拟实现以表单的方式提交一个请求，看看后台服务是否正常处理，这里我们简单实现并记录一下，看看怎么实现。

废话不多说，直接贴出代码：

package com.iflytek.ossp.vaserver.cmd;
    
    import java.io.IOException;
    import java.util.ArrayList;
    import java.util.HashMap;
    import java.util.List;
    import java.util.Map;
    import java.util.Map.Entry;
    
    import org.apache.http.HttpEntity;
    import org.apache.http.HttpHost;
    import org.apache.http.HttpResponse;
    import org.apache.http.client.ClientProtocolException;
    import org.apache.http.client.HttpClient;
    import org.apache.http.client.config.RequestConfig;
    import org.apache.http.client.entity.UrlEncodedFormEntity;
    import org.apache.http.client.methods.HttpPost;
    import org.apache.http.impl.client.HttpClients;
    import org.apache.http.message.BasicNameValuePair;
    import org.apache.http.util.EntityUtils;
    
    public class Test1 {
    	public static void main(String[] args) throws ClientProtocolException, IOException {
    		Map<String,String> params = new HashMap<String,String>();
    		params.put("name", "majing");
    		String result = httpPostWithForm("http://localhost:8081/simulation/vaclient/ttokenvalidate/success", params);
    		System.out.println(result);
    	}
    
    	private static String httpPostWithForm(String url, Map<String, String> params) throws ClientProtocolException, IOException {
    		List<BasicNameValuePair> pairList = new ArrayList<BasicNameValuePair>();
    		for (Entry<String, String> param : params.entrySet()) {
    			pairList.add(new BasicNameValuePair(param.getKey(), param.getValue()));
    		}
    		HttpPost httpPost = new HttpPost(url);
    		
    		//添加代理，用于抓包
    		HttpHost proxy = new HttpHost("127.0.0.1", 8888, "http"); 
            RequestConfig requestConfig = RequestConfig.custom().setConnectionRequestTimeout(8000).setConnectTimeout(8000).setSocketTimeout(8000).setProxy(proxy).build();
            httpPost.setConfig(requestConfig);
    		
    		httpPost.setEntity(new UrlEncodedFormEntity(pairList, "utf-8"));
    		String respContent = null;
    		HttpClient _httpClient = HttpClients.createDefault();
    		HttpResponse resp = _httpClient.execute(httpPost);
    		HttpEntity he = resp.getEntity();
    		respContent = EntityUtils.toString(he, "UTF-8");
    		return respContent;
    	}
    }

在上面的代码中，为了使用Fiddler抓包查看是否请求报文是以Post方式表单提交方式请求的，所以在代码中增加了相关的代理设置代码。

这里使用的HttpClient包的版本是4.3.2，经过测试用例可以正常执行。这里仅做知识点的记录，有需要的可以看下，没有需要的勿喷，谢谢！