JAVA后台模拟文件上传

关于网上前端上传文件的已经烂大街了，这里主要描述后台模拟文件上传的具体实现，记录一下踩坑。

使用场景主要是公司内部项目后端定时上传日志文件到管理平台，废话不多说，上代码：

1. 首先插入pom.xml 依赖 HTTP全家桶

                
		
			org.apache.httpcomponents
			httpcore
			4.4.10
		
		
			org.apache.httpcomponents
			httpmime
			4.5.3
		

		
			org.apache.httpcomponents
			httpclient
			4.5.5
		

public class FileUpload {

	private static Logger logger = LoggerFactory.getLogger(FileUpload.class);
	
	public int upload(String file,String url,String nodeIp){
		CloseableHttpClient httpclient = null;
		CloseableHttpResponse response = null;
		int code = 0 ;
		try {
		    httpclient = HttpClients.createDefault();
		    HttpPost post = new HttpPost(url);
		    HttpEntity data = getMultiDefaultFileEntity(file,nodeIp);
		    post.setEntity(data);
		    response = httpclient.execute(post);
		    code = response.getStatusLine().getStatusCode();
		} catch (Exception e) {
			logger.error("上传日志文件失败{},Cause by:{}",file,e.getMessage());
		    return UploadStatus.Exception;
		} finally {
			try {
		        if (response != null) response.close();
		        if (httpclient != null) httpclient.close();
		    } catch (Exception e) {
		        e.printStackTrace();
		    }
		}
		return code ;
   }
	
	/**
	 * File文件格式上传（缺省）
	*/
	public HttpEntity getMultiDefaultFileEntity(String path,String ip) {
		File file = new File(path);
	    MultipartEntityBuilder builder = MultipartEntityBuilder.create();
	    builder.setMode(HttpMultipartMode.RFC6532); //以浏览器兼容方式 防止文字乱码
	    builder.addBinaryBody("file", file);        
	    builder.addTextBody("ipAddress", ip);       
//	    builder.setCharset(Charset.forName("utf-8"));
	    return builder.build();
	}

踩坑：这里builder.setMode(HttpMultipartMode.RFC6532) 并非一定要设置此模式，如果上传文件名包含中文的话，设置成RFC6532可防止文件名乱码 ，builder.addBinaryBody("file", file)这里设置 类似前端 对应的接收端可通过属性名“file” 获取到此文件流对象。