java实现HttpClient上传文件

忘是亡心i 2024-04-18 20:11 70阅读 0赞

*  控制器

public String dataPicAdd( @RequestParam(value = "img",required = false) MultipartFile uploadImage,
                                 Model model)  throws Exception{ 
    	String sTestsetFile=facePath;
        String sURL="https://www.baidu.com";
        //CloseableHttpClient意思是：可关闭的
        CloseableHttpClient httpClient = HttpClients.createDefault();//1、创建实例
        HttpPost uploadFile = new HttpPost(sURL);//2、创建请求
        
        MultipartEntityBuilder builder = MultipartEntityBuilder.create();
        builder.addTextBody("text", "111", ContentType.TEXT_PLAIN);//传参
        builder.setCharset(Charset.forName("utf8"));//设置请求的编码格式
        //builder.setMode(HttpMultipartMode.BROWSER_COMPATIBLE);//设置浏览器兼容模式
        
        // 把文件加到HTTP的post请求中
        File f = new File(sTestsetFile);
        builder.addBinaryBody(
                "img",
                new FileInputStream(f),
                ContentType.APPLICATION_OCTET_STREAM,
                f.getName()
        );
    
        HttpEntity multipart = builder.build();
        uploadFile.setEntity(multipart);//对于HttpPost对象而言，可调用setEntity(HttpEntity entity)方法来设置请求参数。
        CloseableHttpResponse response = httpClient.execute(uploadFile);//3、执行
        HttpEntity responseEntity = response.getEntity();//4、获取实体
    
        Header header=responseEntity.getContentType();
        //打印内容
        String sResponse= EntityUtils.toString(responseEntity, "UTF-8");//5、获取网页内容，并且指定编码
        System.out.println("Post 返回结果"+sResponse);
        httpClient.close();
        response.close();
        }

*  maven

<dependency>
        <groupId>org.apache.httpcomponents</groupId>
        <artifactId>httpclient</artifactId>
        <version>4.5.3</version>
    </dependency>
    
    <dependency>
        <groupId>org.apache.httpcomponents</groupId>
        <artifactId>httpmime</artifactId>
        <version>4.3.6</version>
    </dependency>

小白一枚，遇到问题，欢迎评论