Httpclient使用post调用文件上传接口报错500

前言

这两天有小粉丝问我：“Httpclient使用post调用文件上传接口报错500，怎么办呀。”

莫慌来我这就告诉你，”孤单寂寞冷”等你来”撩”我。

正题

打断点发现了错误如下：（是在httpclient写好后提交请求时哦，response除报错。）

HttpResponseProxy{HTTP/1.1 500 Internal Server Error [Server: Apache-Coyote/1.1, Content-Type: text/html;charset=utf-8, Content-Language: en, Content-Length: 7303, Date: Mon, 16 Dec 2019 08:07:11 GMT, Connection: close] ResponseEntityProxy{[Content-Type: text/html;charset=utf-8,Content-Length: 7303,Chunked: false]}}

参数，二进制文件：

解决办法：

查找资料所言哈哈，画蛇添足了哈哈哈哈哈哈哈

部分代码如下：

    HttpPost httpPost = new HttpPost(requestUrl);
    // 构建MultipartEntityBuilder参数
    MultipartEntityBuilder builder = MultipartEntityBuilder.create();
    builder.setCharset(java.nio.charset.Charset.forName("UTF-8"));
    builder.setMode(HttpMultipartMode.BROWSER_COMPATIBLE);//加上此行代码解决返回中文乱码问题
    builder.addBinaryBody("file", file[0].getInputStream(),ContentType.MULTIPART_FORM_DATA,filename);// 文件流
    //builder.addBinaryBody("file", file[i].getInputStream());// 文件流
    builder.addTextBody("path", path);
    builder.addTextBody("filename", filename);
    //TODO不上传图片的话需要设置请求头,如果上传图片的话,默认的就是from-data格式
    //builder.setContentType(ContentType.create("multipart/form-data; encoding=utf-8"));
    //httpPost.setHeader("Content-Type", "multipart/form-data; encoding=utf-8");
     
    HttpEntity entity = builder.build();
    httpPost.setEntity(entity);
    HttpClient httpClient = HttpClientBuilder.create().build();
    // 发送请求
    HttpResponse response = httpClient.execute(httpPost);
    HttpEntity responseEntity = response.getEntity();
    String entityStr = EntityUtils.toString(responseEntity);

快去动手试试吧！