HttpClient上传文件

public static void upload() {
CloseableHttpClient httpclient = HttpClients.createDefault();
try {
HttpPost httppost = new HttpPost("http://172.18.5.107:90/Download.html");
FileBody bin = new FileBody(new File("D:\\BaiduNetdiskDownload\\背景圖\\b.jpg"));
FileBody bin2 = new FileBody(new File("D:\\BaiduNetdiskDownload\\背景圖\\哈哈哈.jpg")); ContentType contentType = ContentType.create("text/plain", Charset.forName("UTF-8"));
StringBody comment = new StringBody("123哈哈哈45", contentType);
MultipartEntityBuilder builder=MultipartEntityBuilder.create(); builder.setCharset(Charset.forName("UTF-8"));//设置请求的编码格式
builder.setMode(HttpMultipartMode.BROWSER_COMPATIBLE);//设置浏览器兼容模式 //文件流参数
builder.addPart("bin",bin);
builder.addPart("bi哈哈n2",bin2);
//普通的参数
builder.addPart("employee_no",comment);
HttpEntity reqEntity= builder.build();
httppost.setEntity(reqEntity);
System.out.println("executing request " + httppost.getRequestLine());
CloseableHttpResponse response = httpclient.execute(httppost);
try {
System.out.println(response.getStatusLine());
HttpEntity resEntity = response.getEntity();
if (resEntity != null) {
System.out.println("Response content length: " + resEntity.getContentLength());
System.out.println("Response content: " + EntityUtils.toString(resEntity,"UTF-8"));
}
} finally {
response.close();
}
} catch (Exception e) {
e.printStackTrace();
} finally {
try {
httpclient.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}

protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
PrintWriter out = null;
//跨越访问
response.setHeader("Access-Control-Allow-Origin", "*");
response.setHeader("Access-Control-Allow-Methods", "*");
response.setHeader("Access-Control-Allow-Headers", "x-requested-with,content-type");
response.setCharacterEncoding("utf-8");
response.setContentType("text/html;charset=UTF-8"); FileItemFactory factory = new DiskFileItemFactory();
ServletFileUpload upload = new ServletFileUpload(factory);
File directory = null;
List<FileItem> items = new ArrayList<FileItem>();
try {
items = upload.parseRequest(request);
// 得到所有的文件
Iterator<FileItem> it = items.iterator();
while (it.hasNext()) {
FileItem fItem = (FileItem) it.next(); if (fItem.isFormField()) {
// 普通文本框的值
System.out.println(fItem.getFieldName()+fItem.getString("UTF-8"));
} else { // 获取上传文件的值
String name = fItem.getName();
if(name != null && !("".equals(name))) {
name = name.substring(name.lastIndexOf(File.separator) + 1);
directory = new File("d://test");
directory.mkdirs();
String filePath = ("d://test")+ File.separator + name;
InputStream is = fItem.getInputStream();
FileOutputStream fos = new FileOutputStream(filePath);
byte[] buffer = new byte[1024];
while (is.read(buffer) > 0) {
fos.write(buffer, 0, buffer.length);
}
fos.flush();
fos.close();
}
}
}
} catch (Exception e) {
e.printStackTrace();
}
try {
out = response.getWriter();
out.print("{success:true, msg:'接收成功'}");
out.close();
} catch (IOException e) {
e.printStackTrace();
}
}

public List<String> UploadImage(HttpServletRequest request) { List<String> list=new ArrayList<>();
String employee_no=request.getParameter("employee_no");
String tmppath=File.separator+"img"+File.separator +employee_no+File.separator;
String BasePath=request.getRealPath("/")+tmppath;
String BaseUrl=request.getLocalAddr()+":"+request.getLocalPort()+tmppath;
System.out.println(BaseUrl);
try {
File directory=new File(BasePath);
if(!directory.exists()){
directory.mkdirs();
}
//将当前上下文初始化给 CommonsMutipartResolver （多部分解析器）
CommonsMultipartResolver multipartResolver=new CommonsMultipartResolver(request.getSession().getServletContext());
//检查form中是否有enctype="multipart/form-data"
if(multipartResolver.isMultipart(request))
{
//将request变成多部分request
MultipartHttpServletRequest multiRequest=(MultipartHttpServletRequest)request;
//获取multiRequest 中所有的文件名
Iterator iter=multiRequest.getFileNames();
while(iter.hasNext())
{
//一次遍历所有文件
MultipartFile file=multiRequest.getFile(iter.next().toString());
if(file!=null)
{
String name=file.getOriginalFilename();
System.out.println(file.getName()+name);
String uuid = UUID.randomUUID().toString().replaceAll("-", "").toUpperCase();
String ext=name.substring(name.lastIndexOf("."),name.length());
String filePath = BasePath+uuid+ext;
file.transferTo(new File(filePath));
list.add(BaseUrl+uuid+ext);
}
}
}
} catch (Exception e) {
e.printStackTrace();
}
return list;
}