使用HttpURLConnection 返回 HTTP response code: 500

Question

try {

// 创建SSLContext对象，并使用我们指定的信任管理器初始化
TrustManager[] tm = { new MyX509TrustManager() };
SSLContext sslContext = SSLContext.getInstance("SSL", "SunJSSE");
sslContext.init(null, tm, new java.security.SecureRandom());
// 从上述SSLContext对象中得到SSLSocketFactory对象
SSLSocketFactory ssf = sslContext.getSocketFactory();

URL url = new URL(requestUrl);
HttpsURLConnection conn = (HttpsURLConnection) url.openConnection();
conn.setSSLSocketFactory(ssf);
conn.setRequestMethod(requestMethod);
conn.setRequestProperty("User-Agent", "Mozilla/4.0 (compatible; MSIE 5.0; Windows NT; DigExt)");
conn.setDoOutput(true);
conn.setDoInput(true);
conn.setUseCaches(false);
// 设置请求方式（GET/POST）

// 当outputStr不为null时向输出流写数据
if (null != outputStr) {
    OutputStream outputStream = conn.getOutputStream();
    // 注意编码格式
    outputStream.write(outputStr.getBytes("UTF-8"));
    outputStream.close();
}

// 从输入流读取返回内容
InputStream inputStream = conn.getInputStream();
InputStreamReader inputStreamReader = new InputStreamReader(inputStream, "utf-8");
BufferedReader bufferedReader = new BufferedReader(inputStreamReader);
String str = null;
StringBuffer buffer = new StringBuffer();
while ((str = bufferedReader.readLine()) != null) {
    buffer.append(str);

程序执行到InputStream inputStream = conn.getInputStream();抛出异常
java.io.IOException: Server returned HTTP response code: 500

我发现conn对象的method属性是get,和这有关系吗

Answer 1

服务器返回500表示服务器出错了。你的请求就没有得到正确数据。要看看服务器为什么出错