我正在使用这个 JSON 解析器
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.UnsupportedEncodingException;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.DefaultHttpClient;
import org.json.JSONException;
import org.json.JSONObject;
import android.util.Log;
public class JSONParser {
static InputStream is = null;
static JSONObject jObj = null;
static String json = "";
// constructor
public JSONParser() {
}
public JSONObject getJSONFromUrl(String url) {
// Making HTTP request
try {
// defaultHttpClient
DefaultHttpClient httpClient = new DefaultHttpClient();
HttpPost httpPost = new HttpPost(url);
HttpResponse httpResponse = httpClient.execute(httpPost);
HttpEntity httpEntity = httpResponse.getEntity();
is = httpEntity.getContent();
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
} catch (ClientProtocolException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
try {
BufferedReader reader = new BufferedReader(new InputStreamReader(
is, "iso-8859-1"), 8);
StringBuilder sb = new StringBuilder();
String line = null;
while ((line = reader.readLine()) != null) {
sb.append(line + "n");
}
is.close();
json = sb.toString();
} catch (Exception e) {
Log.e("Buffer Error", "Error converting result " + e.toString());
}
// try parse the string to a JSON object
try {
jObj = new JSONObject(json);
} catch (JSONException e) {
Log.e("JSON Parser", "Error parsing data " + e.toString());
}
// return JSON String
return jObj;
}
}
这就是我从 Django 返回 JSON 的方式
return HttpResponse(json.dumps(data), content_type="application/json")
这就是我想要得到它的方式
JSONParser jParser = new JSONParser();
JSONObject json = jParser.getJSONFromUrl(url);
这是错误
Error parsing data org.json.JSONException: Value n<!DOCTYPE of type java.lang.String cannot be converted to JSONObject
如果我在浏览器中访问该 URL，它会显示根据 JSON Lint 有效的 JSON。
编辑:这是我得到的回复
n<!DOCTYPE html>n<html lang="en">n<head>n <meta http-equiv="content-type" content="text/html; charset=utf-8">n <meta name="robots" content="NONE,NOARCHIVE">n <title>RuntimeError at /get_json</title>n <style type="text/css">n html * { padding:0; margin:0; }n body * { padding:10px 20px; }n body * * { padding:0; }n body { font:small sans-serif; }n body>div { border-bottom:1px solid #ddd; }n h1 { font-weight:normal; }n h2 { margin-bottom:.8em; }n h2 span { font-size:80%; color:#666; font-weight:normal; }n h3 { margin:1em 0 .5em 0; }n h4 { margin:0 0 .5em 0; font-weight: normal; }n code, pre { font-size: 100%; white-space: pre-wrap; }n table { border:1px solid #ccc; border-collapse: collapse; width:100%; background:white; }n tbody td, tbody th { vertical-align:top; padding:2px 3px; }n thead th { padding:1px 6px 1px 3px; background:#fefefe; text-align:left; font-weight:normal; font-size:11px; border:1px solid #ddd; }n tbody th { width:12em; text-align:right; color:#666; padding-right:.5em; }n table.vars { margin:5px 0 2px 40px; }n table.vars td, table.req td { font-family:monospace; }n table td.code { width:100%; }n table td.code pre { overflow:hidden; }n table.source th { color:#666; }n table.source td { font-family:monospace; white-space:pre; border-bottom:1px solid #eee; }n ul.traceback { list-style-type:none; color: #222; }n ul.traceback li.frame { padding-bottom:1em; color:#666; }n ul.traceback li.user { background-color:#e0e0e0; color:#000 }n div.context { padding:10px 0; overflow:hidden; }n div.context ol { padding-left:30px; margin:0 10px; list-style-position: inside; }n div.context ol li { font-family:monospace; white-space:pre; color:#777; cursor:pointer; }n div.context ol li pre { display:inline; }n div.context ol.context-line li { color:#505050; background-color:#dfdfdf; }n div.context ol.context-line li span { position:absolute; right:32px; }n .user div.context ol.context-line li { background-color:#bbb; color:#000; }n .user div.context ol li { color:#666; }n div.commands { margin-left: 40px; }n div.commands a { color:#555; text-decoration:none; }n .user div.commands a { color: black; }n #summary { background: #ffc; }n #summary h2 { font-weight: normal; color: #666; }n #explanation { background:#eee; }n #template, #template-not-exist { background:#f6f6f6; }n #template-not-exist ul { margin: 0 0 0 20px; }n #unicode-hint { background:#eee; }n #traceback { background:#eee; }n #requestinfo { background:#f6f6f6; padding-left:120px; }n #summary table { border:none; background:transparent; }n #requestinfo h2, #requestinfo h3 { position:relative; margin-left:-100px; }n #requestinfo h3 { margin-bottom:-1em; }n .error { background: #ffc; }n .specific { color:#cc3300; font-weight:bold; }n h2 span.commands { font-size:.7em;}n span.commands a:link {color:#5E5694;}n pre.exception_value { font-family: sans-serif; color: #666; font-size: 1.5em; margin: 10px 0 10px 0; }n </style>n n <script type="text/javascript">n //<!--n function getElementsByClassName(oElm, strTagName, strClassName){n // Written by Jonathan Snook, http://www.snook.ca/jon; Add-ons by Robert Nyman, http://www.robertnyman.comn var arrElements = (strTagName == "*" && document.all)? document.all :n oElm.getElementsByTagName(strTagName);n var arrReturnElements = new Array();n strClassName = strClassName.replace(/\-/g, "\-");n var oRegExp = new RegExp("(^|\s)" + strClassName + "(\s|$)");n var oElement;n for(var i=0; i<arrElements.length; i++){n oElement = arrElements[i];n if(oRegExp.test(oElement.className)){n arrReturnElements.push(oElement);n }n }n return (arrReturnElements)n }n function hideAll(elems) {n for (var e = 0; e < elems.length; e++) {n elems[e].style.display = 'none';n }n }n window.onload = function() {n hideAll(getEl
最佳答案
长话短说
httpPost.setHeader("Accept", "application/json");
HttpPost的默认“接受”HttpHeader 值是
text/html, image/gif, image/jpeg, *; q=.2,/; q=.2
当使用 text/html 时，django 返回用 HTML 包装的 JSON。如果需要纯 JSON，Accept HttpHeader 值应设置为 'application/json'
关于java - 试图从 Django 服务器获取 JSON 数据到 Android 但获取 HTML，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/27081278/