HttpClient PostMethod模擬帶文件上傳+普通字段的http請求(可解決文件為網絡文件的問題)
代碼示例:
postMethod = new PostMethod("https://api.t.sina.com.cn/statuses/upload.xml"); Part[] parts = {new StringPart("source", "695132533"), new StringPart("status", URLEncoder.encode(status, "utf-8")), new FilePart("pic", new File("1.jpg"))}; postMethod.setRequestEntity(new MultipartRequestEntity(parts, postMethod.getParams()));
上例中,MultipartRequestEntity封裝了普通字段和文件字段。
另注:由於自己的應用中,文件塊不是在本地的,而是來源於網絡,所以FilePart的創建,改為以下代碼:
URL url = new URL(picUrl);URLConnection connection = url.openConnection(); InputStream is = connection.getInputStream(); /** 這麼寫不對 int length = is.available(); byte[] buffer = new byte[length]; is.read(buffer); */ //應該這樣寫 ByteArrayOutputStream baos = new ByteArrayOutputStream(); int len = 0; byte[] b = new byte[1024]; while ((len = is.read(b, 0, b.length)) != -1) { baos.write(b, 0, len); } byte[] buffer = baos.toByteArray(); new FilePart("pic", new ByteArrayPartSource("pic", buffer))
最後更新:2017-04-03 22:31:03