http请求工具类，实现multipart/form-data的文档上传，对于https协议跳过证书验证

本文链接：https://blog.youkuaiyun.com/sinat_38406526/article/details/121633840

本文档介绍了在Java中使用Apache HttpClient库创建HTTP工具类，以处理multipart/form-data的POST和GET请求，包括文件上传。同时，详细讲解了如何在HTTPS请求中跳过客户端证书验证，适用于JDK 1.6环境。

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LoadRunner11目前仅支持jdk 1.6版本，在压测时，使用高版本的jdk生成的工具类调用会报错，jdk 1.6来开发调用http协议的工具类，工具使用Apache的httpclient实现，具体步骤如下，在这里下载源码。

1、pom引用

    <dependency>
	    <groupId>org.apache.httpcomponents</groupId>
	    <artifactId>httpclient</artifactId>
	    <version>4.5.13</version>
  	</dependency>
	<dependency>
	    <groupId>org.apache.httpcomponents</groupId>
	    <artifactId>httpcore</artifactId>
	    <version>4.4.14</version>
	</dependency>
	<dependency>
		<groupId>net.sf.json-lib</groupId>
		<artifactId>json-lib</artifactId>
		<classifier>jdk15</classifier>
		<version>2.4</version>
	</dependency>
	<!-- https://mvnrepository.com/artifact/org.apache.httpcomponents/httpmime -->
	<dependency>
	    <groupId>org.apache.httpcomponents</groupId>
	    <artifactId>httpmime</artifactId>
	    <version>4.5.13</version>
	</dependency>

2、Content-Type为multipart/form-data的POST请求工具类实现，并支持文件上传，代码如下

private static final Integer CONNECT_TIMEOUT = 15000;
private static final Integer REND_TIMEOUT = 60000;
/**
	 * 使用httpClient发送post请求,contentType 类型为application/x-www-form-urlencoded
	 * @param httpurl	请求的url
	 * @param params	请求的参数
	 * @param headers	请求头
	 * @param filePathMap	上传文件
	 * @return
	 * @throws Exception
	 */
	public static EdsmHttpResponse sendPostFormRequst(String httpurl, Map<String, Object> params,
			Map<String, Object> headers, Map<String, String> filePathMap) throws Exception {
		EdsmHttpResponse resultResponse = null;
		CloseableHttpClient httpClient = createSSLClientDefault(httpurl);
		// 创建Post请求
		HttpPost httpPost = new HttpPost(httpurl);
		MultipartEntityBuilder builder = MultipartEntityBuilder.create();
		String boundary = "DSPSBoundary" + System.currentTimeMillis();
		builder.setBoundary(boundary);
		httpPost.setHeader("Content-Type", "multipart/form-data; boundary=" + boundary);
		// 设置其他自定义 headers
		if (headers != null && !headers.isEmpty()) {
			for (Map.Entry<String, Object> header : headers.e