通过java模拟发送post数据
public static String sendPost(String url, List<PostValue> parameters) { String result = "";// 返回的结果 BufferedReader in = null;// 读取响应输入流 PrintWriter out = null; StringBuffer sb = new StringBuffer();// 处理请求参数 String params = "";// 编码之后的参数 try { // 编码请求参数 if(parameters.size() == 1){ for(PostValue p:parameters){ sb.append(p.getKey()).append("=").append(p.getValue()); } params = sb.toString(); }else{ for(PostValue p:parameters){ sb.append(p.getKey()).append("=").append(p.getValue()).append("&"); } String temp_params = sb.toString(); params = temp_params.substring(0, temp_params.length() - 1); } // 创建URL对象 java.net.URL connURL = new java.net.URL(url); // 打开URL连接 java.net.HttpURLConnection httpConn = (java.net.HttpURLConnection) connURL .openConnection(); // 设置通用属性 httpConn.setRequestProperty("Accept", "*/*"); httpConn.setRequestProperty("Connection", "Keep-Alive"); httpConn.setRequestProperty("User-Agent", "Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1)"); httpConn.setRequestProperty("Accept-Charset", "GBK"); httpConn.setRequestProperty("Content-Type", "application/x-www-form-urlencoded;charset=gbk"); // 设置POST方式 httpConn.setDoInput(true); httpConn.setDoOutput(true); // 获取HttpURLConnection对象对应的输出流 out = new PrintWriter(httpConn.getOutputStream()); // 发送请求参数 out.write(params); // flush输出流的缓冲 out.flush(); // 定义BufferedReader输入流来读取URL的响应，设置编码方式 in = new BufferedReader(new InputStreamReader(httpConn .getInputStream(), "GBK")); String line; // 读取返回的内容 while ((line = in.readLine()) != null) { result += line+"\r\n"; } } catch (Exception e) { e.printStackTrace(); } finally { try { if (out != null) { out.close(); } if (in != null) { in.close(); } } catch (IOException ex) { ex.printStackTrace(); } } return result; } ?如果没有设置
httpConn.setRequestProperty("Accept-Charset", "GBK"); httpConn.setRequestProperty("Content-Type", "application/x-www-form-urlencoded;charset=gbk");? 的话，那么
out = new PrintWriter(httpConn.getOutputStream()); 提交到服务器端是以iso-8859-1的数据编码格式传递过去的那么我们只能通过new String(value.getBytes("iso-8859-1"),"gbk")来的到正确的数据内容