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org.anyline.net.HttpBuilder.init().setUrl("http://127.0.0.1/up")                 //上传地址
        .addParam("token","abc")                                                 //其他参数
        .addUploadFiles("file", new File("d:\\logo.png"))                        //上传文件
        .addUploadFiles("file", FileUtil.file2byte(new File("d:\\logo.png")))    //上传byte数组
        .build()
        .upload();
 
或者
 
Map<String,Object> params = new HashMap<>();//其他参数
params.put("type", "1");
Map<String, Object> files = new HashMap<>();//上传文件 
files.put("pic1", new File("d:\\logo.png"));//File
files.put("pic2", FileUtil.file2byte(new File("d:\\logo.png"))); //byte[]
 
HttpUtil.upload(url, files, params);

接收文件

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<dependency>
    <groupId>commons-fileupload</groupId>
    <artifactId>commons-fileupload</artifactId>
    <version>1.4</version>
</dependency>
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import org.springframework.web.multipart.MultipartFile;
import org.springframework.web.multipart.MultipartHttpServletRequest;
import org.springframework.web.multipart.commons.CommonsMultipartResolver;
 
@RequestMapping(value = "/up")
@ResponseBody
public String upload(HttpServletRequest request, @RequestParam(value = "file", required = false) MultipartFile file) {
 
}
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/**
 * 接收多个文件
 */
@RequestMapping(value = "/ups")
public String uploads(HttpServletRequest request, HttpServletResponse response) {
    CommonsMultipartResolver multipartResolver = new CommonsMultipartResolver(request.getSession().getServletContext());
    // 判断 request 是否有文件上传,即多部分请求
    if (multipartResolver.isMultipart(request)) {
        // 转换成多部分request
        MultipartHttpServletRequest multiRequest = (MultipartHttpServletRequest) request;
        // 取得request中的所有文件名
        Iterator<String> iter = multiRequest.getFileNames();
        while (iter.hasNext()) {
            // 取得上传文件
            MultipartFile file = multiRequest.getFile(iter.next());
        }
    }
}