我正在使用Java，我想在此URL中使用json：http://jiraserver/rest/dev-status/latest/issue/detail?issueId=13879&applicationType=stash&dataType=repository
在浏览器上，此url可以正常工作，并且我获取了所有需要的json数据，但是在我的Java程序中，我得到了
java.io.IOException：服务器返回URL的HTTP响应代码：400： http://jiraserver/rest/dev-status/latest/issue/detail?issueId=13879&applicationType=stash&dataType=repository
public static void main(String[] args) {
System.out
.println(jsonGetRequest("http://jiraserver/rest/dev-status/latest/issue/detail?issueId=13879&applicationType=stash&dataType=repository
"));
}
private static String streamToString(InputStream inputStream) {
String text = new Scanner(inputStream, "UTF-8").useDelimiter("\\Z").next();
return text;
}
public static String jsonGetRequest(String urlQueryString) {
String json = null;
try {
URL url = new URL(urlQueryString);
HttpURLConnection connection = (HttpURLConnection) url.openConnection();
connection.setDoOutput(true);
connection.setInstanceFollowRedirects(false);
connection.setRequestMethod("GET");
connection.setRequestProperty("Content-Type", "application/json");
connection.setRequestProperty("charset", "utf-8");
connection.connect();
InputStream inStream = connection.getInputStream();
json = streamToString(inStream); // input stream to string
} catch (IOException ex) {
ex.printStackTrace();
}
return json;
}