标签:use auto 这一 obj block support 设置 input cti
转自:http://blog.csdn.net/hwj3747/article/details/53635539
在Java使用HttpURLConnection请求rest接口的时候出现了POST请求出现中文乱码的问题,经过把传入的String通过多种方法进行编码发现都解决不了,如下:
String teString=new String("你好".getBytes("ISO-8859-1"),"UTF-8");
网上HttpURLConnection的请求通常是这样子的:
public static String PostRequest(String URL,String obj) { String jsonString=""; try { //创建连接 URL url = new URL(URL); HttpURLConnection connection = (HttpURLConnection) url .openConnection(); connection.setDoOutput(true); connection.setDoInput(true); connection.setRequestMethod("POST"); //设置请求方法 connection.setRequestProperty("Charsert", "UTF-8"); //设置请求编码 connection.setUseCaches(false); connection.setInstanceFollowRedirects(true); connection.setRequestProperty("Content-Type", "application/json"); connection.connect(); //POST请求 DataOutputStream out = new DataOutputStream( connection.getOutputStream()); //关键的一步 out.writeBytes(obj); out.flush(); out.close(); // 读取响应 if (connection.getResponseCode()==200) { BufferedReader reader = new BufferedReader(new InputStreamReader(connection.getInputStream())); String lines; StringBuffer sb = new StringBuffer(""); while ((lines = reader.readLine()) != null) { lines = new String(lines.getBytes(), "utf-8"); sb.append(lines); } jsonString=sb.toString(); reader.close(); }//返回值为200输出正确的响应信息 if (connection.getResponseCode()==400) { BufferedReader reader = new BufferedReader(new InputStreamReader(connection.getErrorStream())); String lines; StringBuffer sb = new StringBuffer(""); while ((lines = reader.readLine()) != null) { lines = new String(lines.getBytes(), "utf-8"); sb.append(lines); } jsonString=sb.toString(); reader.close(); }//返回值错误,输出错误的返回信息 // 断开连接 connection.disconnect(); } catch (MalformedURLException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (UnsupportedEncodingException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } return jsonString; }
需要注意的是返回值为200时,connection.getInputStream()才有值,返回值为400时connection.getInputStream()是空的,connection.getErrorStream()才有值。
以上是大多数网上博客文章的写法,但是我用这种方法遇到了中文乱码的问题。在out.writeBytes(obj);这一步无论对obj这个字符串怎样转换,得到的结果还是乱码,最终得到的解决方法是这样的:
把这个部分代码,
DataOutputStream out = new DataOutputStream( connection.getOutputStream()); //关键的一步 out.writeBytes(obj);
改成
PrintWriter out = new PrintWriter(new OutputStreamWriter(connection.getOutputStream(),"utf-8")); out.println(obj);
解决。
Java HttpURLConnection模拟请求Rest接口解决中文乱码问题
标签:use auto 这一 obj block support 设置 input cti
原文地址:http://www.cnblogs.com/antis/p/7155810.html