HttpClient文件上传

利用 apache  httpmime.jar包
        maven配置如下
<dependency>

<groupId>org.apache.httpcomponents</groupId>

 <artifactId>httpmime</artifactId>

<version>4.0.2</version>

</dependency>

public static void main(String[] args) throws ClientProtocolException,
            IOException {
        HttpClient httpclient = new DefaultHttpClient();
        //请求处理页面
        HttpPost httppost = new HttpPost(
                "http://localhost:8080/webtools/upload.jsp");
        //创建待处理的文件
        FileBody file = new FileBody(new File("d:/22.rar"));


        //对请求的表单域进行填充
        MultipartEntity reqEntity = new MultipartEntity();
        reqEntity.addPart("fileField", file);

        //设置请求
        httppost.setEntity(reqEntity);
        //执行
        HttpResponse response = httpclient.execute(httppost);

        if(HttpStatus.SC_OK==response.getStatusLine().getStatusCode()){
            HttpEntity entity = response.getEntity();

        }
    }