http 简单调用第三方接口

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本文介绍了一个使用Apache HttpClient发起POST请求的Java示例，演示了如何构造请求头和请求体，并将其转换为XML格式发送到指定URL。

仅做记录，注意post请求乱码问题~~

maven依赖：
<dependency>
<groupId>org.apache.httpcomponents</groupId>
<artifactId>httpclient</artifactId>
<version>4.5.1</version>
</dependency>

package com.tianan.delivery;

import org.apache.http.HttpResponse;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.HttpClientBuilder;
import org.apache.http.util.EntityUtils;

import com.tianan.delivery.common.util.XMLUtil;
import com.tianan.delivery.kernel.vo.httpClient.DeliveryRequest;
import com.tianan.delivery.kernel.vo.httpClient.DeliveryRequestBody;
import com.tianan.delivery.kernel.vo.httpClient.DeliveryRequestHead;

public class HttpClientDemo {

	public static void main(String[] args) throws Exception {
		// 封装头信息和主体
		DeliveryRequest deliveryRequest = new DeliveryRequest();
		DeliveryRequestHead deliveryRequestHead = new DeliveryRequestHead();
		deliveryRequestHead.setApplyNo("8666666666666666666666");
		deliveryRequestHead.setApplyTime("2016-03-16 10:33:24");
		deliveryRequestHead.setApplyType("V003");
		deliveryRequestHead.setSIGN("XXXXXXXXXXXXXXXXXXXXXX");

		DeliveryRequestBody deliveryRequestBody = new DeliveryRequestBody();
		deliveryRequestBody.setProposalNo("8666666666666666666666");
		deliveryRequestBody.setCustomerSource("010101");

		deliveryRequest.setDeliveryRequestHead(deliveryRequestHead);
		deliveryRequest.setDeliveryRequestBody(deliveryRequestBody);

		// 转化为对应XML文件
		// String responseMessage = XMLUtil.toXml(deliveryRequest);

		// 直接copy现成xml文件做测试
		String responseMessage = "<?xml version=\"1.0\" encoding=\"utf-8\" standalone=\"yes\"?><root><head><applyNo>8666666666666666666666</applyNo><applyTime>2015-10-15 14:23:55</applyTime><applyType>V003</applyType><SIGN>XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX</SIGN></head><body><proposalNo>8666666666666666666666</proposalNo><customerSource>010101</customerSource></body></root>";

		HttpClient httpClient = HttpClientBuilder.create().build();
		HttpPost httpPost = new HttpPost("http://localhost:8082/delivery2/delivery/deliveryFind");
		httpPost.addHeader("content-type", "text/xml");
		// 注意设置编码
		StringEntity entity = new StringEntity(responseMessage, "UTF-8");
		httpPost.setEntity(entity);
		HttpResponse httpResponse = httpClient.execute(httpPost);

		String response = EntityUtils.toString(httpResponse.getEntity());
		System.out.println("************");
		System.out.println(response);
	}
}