httpClient上传下载文件

/**
* 上传文件
* @throws  ParseException
* @throws  IOException
*/
public static void postFile(InputStream inputStream)throws ParseException, IOException{
CloseableHttpClient httpClient = HttpClients.createDefault();
try{
// 要上传的文件的路径
//            String filePath = new String("F:/pic/001.jpg");
// 把一个普通参数和文件上传给下面这个地址 是一个servlet
//            HttpPost httpPost =new HttpPost("http://localhost:8080/xxx/xxx.action");
HttpPost httpPost =new HttpPost("http://localhost:8088/spider/testFile.do");
// 把文件转换成流对象 FileBody
//            FileBody bin =new FileBody(file);
StringBody uploadFileName =new StringBody("把我修改成文件名称", ContentType.create("text/plain", Consts.UTF_8));
//以浏览器兼容模式运行，防止文件名乱码。
HttpEntity reqEntity = MultipartEntityBuilder.create().setMode(HttpMultipartMode.BROWSER_COMPATIBLE)
//                    .addBinaryBody("uploadFile", inputStream)
.addBinaryBody("uploadFile", inputStream ,ContentType.create("jpg") ,"_ddddddd.png")
//                    .addPart("uploadFile", inputStream)//uploadFile对应服务端类的同名属性<File类型>
.addPart("uploadFileName", uploadFileName)//uploadFileName对应服务端类的同名属性<String类型>
.setCharset(CharsetUtils.get("UTF-8")).build();

httpPost.setEntity(reqEntity);

System.out.println("发起请求的页面地址 "+ httpPost.getRequestLine());
// 发起请求 并返回请求的响应
CloseableHttpResponse response = httpClient.execute(httpPost);
try{
System.out.println("----------------------------------------");
// 打印响应状态
System.out.println(response.getStatusLine());
// 获取响应对象
HttpEntity resEntity = response.getEntity();
if(resEntity !=null) {
// 打印响应长度
System.out.println("Response content length: "
+ resEntity.getContentLength());
// 打印响应内容
System.out.println(EntityUtils.toString(resEntity,
Charset.forName("UTF-8")));
}
// 销毁
EntityUtils.consume(resEntity);
}finally{
response.close();
}
}finally{
httpClient.close();
}
}

public static void postFile(String filePath)throws ParseException, IOException{
CloseableH
4000
ttpClient httpClient = HttpClients.createDefault();
try{
// 要上传的文件的路径
//            String filePath = new String("F:/pic/001.jpg");
// 把一个普通参数和文件上传给下面这个地址 是一个servlet
//            HttpPost httpPost =new HttpPost("http://localhost:8080/xxx/xxx.action");
HttpPost httpPost =new HttpPost("http://localhost:8088/spider/testFile.do");
// 把文件转换成流对象 FileBody
File file =new File(filePath);
FileBody bin =new FileBody(file);
StringBody uploadFileName =new StringBody("把我修改成文件名称", ContentType.create("text/plain", Consts.UTF_8));
//以浏览器兼容模式运行，防止文件名乱码。
HttpEntity reqEntity = MultipartEntityBuilder.create().setMode(HttpMultipartMode.BROWSER_COMPATIBLE)
.addPart("uploadFile", bin)//uploadFile对应服务端类的同名属性<File类型>
.addPart("uploadFileName", uploadFileName)//uploadFileName对应服务端类的同名属性<String类型>
.setCharset(CharsetUtils.get("UTF-8")).build();

httpPost.setEntity(reqEntity);

System.out.println("发起请求的页面地址 "+ httpPost.getRequestLine());
// 发起请求 并返回请求的响应
CloseableHttpResponse response = httpClient.execute(httpPost);
try{
System.out.println("----------------------------------------");
// 打印响应状态
System.out.println(response.getStatusLine());
// 获取响应对象
HttpEntity resEntity = response.getEntity();
if(resEntity !=null) {
// 打印响应长度
System.out.println("Response content length: "
+ resEntity.getContentLength());
// 打印响应内容
System.out.println(EntityUtils.toString(resEntity,
Charset.forName("UTF-8")));
}
// 销毁
EntityUtils.consume(resEntity);
}finally{
response.close();
}
}finally{
httpClient.close();
}
}

/**
* 下载文件
* @param  url
* @param  destFileName   xxx.jpg/xxx.png/xxx.txt
* @throws  ClientProtocolException
* @throws IOException
*/
public static void getFile(String url, String destFileName) throws ClientProtocolException, IOException {
// 生成一个httpclient对象
CloseableHttpClient httpclient = HttpClients.createDefault();
HttpGet httpget =new HttpGet(url);
HttpResponse response = httpclient.execute(httpget);
HttpEntity entity = response.getEntity();
InputStream in = entity.getContent();
File file =new File(destFileName);
try{
FileOutputStream fout =new FileOutputStream(file);
int l = -1;
byte[] tmp =new byte[1024];
while((l = in.read(tmp)) != -1) {
fout.write(tmp,0, l);
// 注意这里如果用OutputStream.write(buff)的话，图片会失真，大家可以试试
}
fout.flush();
fout.close();
}finally{
// 关闭低层流。
in.close();
}
httpclient.close();
}