Java将xml属性放在HTTP请求的“请求版本”部分

我能够使用浏览器发送以下请求并接收正确的响应，但当我使用以下代码发送请求时，服务器返回错误

我怀疑问题在于Java将xml属性放在HTTP请求的请求版本部分

String QueryString = "http://xml.example.com/service?"
            + "<List>"
            + "<Credentials username=\"example\" password=\"example1\" remoteIp=\"X.X.X.X\"/>"
            + "<Id>10202</Id>"
            + "</List>";

    try {
        URL page = new URL(QueryString);

        StringBuffer text = new StringBuffer();

        HttpURLConnection conn = (HttpURLConnection) page.openConnection();
        conn.connect();

        InputStreamReader in = new InputStreamReader(
                (InputStream) conn.getContent());

---

我将附和对问题的评论，说这对于您正在与之通信的服务器来说是一个相当糟糕的表示选择，但是如果这是服务提供商提供的唯一选项，那么

如果服务器需要URI编码的查询字符串，则可以使用java.net.URI的多参数构造函数为您处理必要的转义：

URI uri = new URI("http", "xml.example.com", "/service",
          "<List>"
        + "<Credentials username=\"example\" password=\"example1\" remoteIp=\"X.X.X.X\"/>"
        + "<Id>10202</Id>"
        + "</List>", null);
URL page = uri.toURL();

如果您想在请求主体中发布数据，而不是在URL中提供数据，那么为了清晰起见，您需要类似于此异常处理的内容

URL page = new URL("http://xml.example.com/service");
HttpURLConnection connection = page.openConnection();
connection.setRequestMethod("POST");
connection.setRequestProperty("Content-Type", "application/xml"); // or text/xml
connection.setDoOutput(true); // need to call this before you can getOutputStream

// write the XML as UTF-8 (which is what an XML parser will expect as you're
// sending it without an <?xml declaration that says anything different)
Writer writer = new OutputStreamWriter(connection.getOutputStream(), "UTF-8");
writer.write("<List>"
        + "<Credentials username=\"example\" password=\"example1\" remoteIp=\"X.X.X.X\"/>"
        + "<Id>10202</Id>"
        + "</List>");
writer.close();

---

这非常难看，让我强调一下，以这样的查询字符串发送数据非常难看。改为使用POST请求的主体。同样针对您的问题-问题可能是URI编码。浏览器在用户没有注意到的情况下自动进行编码。在Java代码中，您需要手动执行此操作或在语义上构造URL对象，甚至看起来您正在尝试这样做身份验证。URL被转储到访问日志中，因此您将在这些文件中公开用户凭据。@PavelHoll您能否帮助我将其放入正文中？请通过JRE组件发送帖子可能有点烦人。检查Apache HTTP组件库。谢谢，它可以作为所需的URI编码查询字符串工作。实际上，服务器需要是https，我使用http的原因是为了能够使请求和响应可读，并且我对将请求放在post正文中非常感兴趣，你能帮我吗？我应该在另一个问题中问这个问题吗？@Alex我已经添加了一个如何做的示例，基本上与您在中展示的相同。

URI uri = new URI("http", "xml.example.com", "/service",
          "<List>"
        + "<Credentials username=\"example\" password=\"example1\" remoteIp=\"X.X.X.X\"/>"
        + "<Id>10202</Id>"
        + "</List>", null);
URL page = uri.toURL();

URL page = new URL("http://xml.example.com/service?"
    + URLEncoder.encode("<List>"
        + "<Credentials username=\"example\" password=\"example1\" remoteIp=\"X.X.X.X\"/>"
        + "<Id>10202</Id>"
        + "</List>", "UTF-8"));

URL page = new URL("http://xml.example.com/service");
HttpURLConnection connection = page.openConnection();
connection.setRequestMethod("POST");
connection.setRequestProperty("Content-Type", "application/xml"); // or text/xml
connection.setDoOutput(true); // need to call this before you can getOutputStream

// write the XML as UTF-8 (which is what an XML parser will expect as you're
// sending it without an <?xml declaration that says anything different)
Writer writer = new OutputStreamWriter(connection.getOutputStream(), "UTF-8");
writer.write("<List>"
        + "<Credentials username=\"example\" password=\"example1\" remoteIp=\"X.X.X.X\"/>"
        + "<Id>10202</Id>"
        + "</List>");
writer.close();