http post带有文件、参数的请求

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pom.xml:

<dependency>
    <groupId>org.apache.httpcomponents</groupId>
    <artifactId>httpclient</artifactId>
    <version>4.3.6</version>
</dependency>
<dependency>
    <groupId>org.apache.httpcomponents</groupId>
    <artifactId>httpmime</artifactId>
    <version>4.5</version>
</dependency>
<dependency>
    <groupId>org.apache.httpcomponents</groupId>
    <artifactId>httpcore</artifactId>
    <version>4.4.1</version>
</dependency>

发送端:

import java.io.File;
import java.io.IOException;
import java.nio.charset.Charset;
import org.apache.http.HttpEntity;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.entity.ContentType;
import org.apache.http.entity.mime.MultipartEntityBuilder;
import org.apache.http.impl.client.HttpClientBuilder;
public class PostTest {
	public static void main(String[] args) {
		HttpClient httpClient = HttpClientBuilder.create().build();
		HttpPost httpPost = new HttpPost("url");// 请求地址
		MultipartEntityBuilder meb = MultipartEntityBuilder.create();
		ContentType strContent = ContentType.create("text/plain", Charset.forName("UTF-8"));
		meb.addBinaryBody("uploadfile", new File("D://123.txt"));// 需要传输的文件，参数也可以是流
		meb.addTextBody("param1", "paramvalue", strContent);// 普通字段，指定编码
		meb.addTextBody("param2", "paramvalue", strContent);// 普通字段，指定编码
		HttpEntity httpEntity = meb.build();
		httpPost.setEntity(httpEntity);
		try {
			httpClient.execute(httpPost);
		} catch (ClientProtocolException e) {
			e.printStackTrace();
		} catch (IOException e) {
			e.printStackTrace();
		}
	}
}

接收端:

@RequestMapping(value = "/emailattach", produces = "application/json; charset=utf-8")
@ResponseBody
public String email(
	@RequestParam("uploadfile")MultipartFile file,
	@RequestParam("param1")String param1,
	@RequestParam("param2")String param2
) {
	log.info("receive_param1-{},param2:{}",param1,param2);
	try {
		InputStreamReader read = new InputStreamReader(file.getInputStream(), "utf-8");
		BufferedReader bufferedReader = new BufferedReader(read);
		StringBuffer jsonContent = new StringBuffer();
		String content = "";
		while ((content = bufferedReader.readLine()) != null) {
			jsonContent.append(content);
		}
		String filePath = "D://filetest.txt";
		File date = new File(filePath);
		FileOutputStream fop = null;
		fop = new FileOutputStream(date);
		byte[] contentInBytes = jsonContent.toString().getBytes();
		fop.write(contentInBytes);
		fop.flush();
		fop.close();
		read.close();
	} catch (Exception e) {
		log.error(e.getMessage(), e);
	}
	return "";
}