私はちょうどそれに入るつもりです。JSON文字列をJSONOjectに変換できないというエラーがLogCatに表示され、このエラーを回避する方法が本当にわからないので、私よりも知識のある誰かが私にアドバイスをくれることを望んでいましたこの問題に参加することができます
ログキャット:
08-02 00:12:28.485: E/JSON Parser(778): Error parsing data org.json.JSONException: Value <!doctype of type java.lang.String cannot be converted to JSONObject
JSONParser クラス
public class JSONParser {
InputStream is;
JSONObject jObj;
String json = "";
public EditText et;
public JSONParser () {
}
public JSONObject readJSONFeed(String URL) {
try{
HttpClient client = new DefaultHttpClient();
HttpPost request = new HttpPost(URL);
//request.setURI(website);
try {
HttpResponse response = client.execute(request);
HttpEntity httpEntity = response.getEntity();
is = httpEntity.getContent();
} catch (ClientProtocolException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
try {
BufferedReader reader = new BufferedReader(new InputStreamReader(
is, "iso-8859-1"), 8);
StringBuilder sb = new StringBuilder();
String line;
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 {
jObj = new JSONObject(json);
} catch (JSONException e) {
Log.e("JSON Parser", "Error parsing data " + e.toString());
}
return jObj;
}finally{}
}{
}}
これは、このエラーが表示される原因となっているメソッドです。
try {
jObj = new JSONObject(json);
} catch (JSONException e) {
Log.e("JSON Parser", "Error parsing data " + e.toString());
}
JSON 文字列を出力しました。
08-02 20:02:27.535: D/JSON String(795): <!doctype html public "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
08-02 20:02:27.535: D/JSON String(795): <html><head><title>Yahoo! - 404 Not Found</title><style>
08-02 20:02:27.535: D/JSON String(795): /* nn4 hide */
08-02 20:02:27.535: D/JSON String(795): /*/*/
08-02 20:02:27.535: D/JSON String(795): body {font:small/1.2em arial,helvetica,clean,sans-serif;font:x-small;text-align:center;}table {font-size:inherit;font:x-small;}
08-02 20:02:27.535: D/JSON String(795): html>body {font:83%/1.2em arial,helvetica,clean,sans-serif;}input {font-size:100%;vertical-align:middle;}p, form {margin:0;padding:0;}
08-02 20:02:27.535: D/JSON String(795): p {padding-bottom:6px;margin-bottom:10px;}#doc {width:48.5em;margin:0 auto;border:1px solid #fff;text-align:center;}#ygma {text-align:right;margin-bottom:53px}
08-02 20:02:27.535: D/JSON String(795): #ygma img {float:left;}#ygma div {border-bottom:1px solid #ccc;padding-bottom:8px;margin-left:152px;}#bd {clear:both;text-align:left;width:75%;margin:0 auto 20px;}
08-02 20:02:27.535: D/JSON String(795): h1 {font-size:135%;text-align:center;margin:0 0 15px;}legend {display:none;}fieldset {border:0 solid #fff;padding:.8em 0 .8em 4.5em;}
08-02 20:02:27.535: D/JSON String(795): form {position:relative;background:#eee;margin-bottom:15px;border:1px solid #ccc;border-width:1px 0;}
08-02 20:02:27.535: D/JSON String(795): #s1p {width:15em;margin-right:.1em;}
08-02 20:02:27.535: D/JSON String(795): form span {position:absolute;left:70%;top:.8em;}form a {font:78%/1.2em arial;display:block;padding-left:.8em;white-space:nowrap;background: url(http://l.yimg.com/a/i/s/bullet.gif) no-repeat left center;}
08-02 20:02:27.535: D/JSON String(795): form .sep {display:none;}.more {text-align:center;}#ft {padding-top:10px;border-top:1px solid #999;}#ft p {text-align:center;font:78% arial;}
08-02 20:02:27.535: D/JSON String(795): /* end nn4 hide */
08-02 20:02:27.535: D/JSON String(795): </style></head>
08-02 20:02:27.535: D/JSON String(795): <body><div id="doc">
08-02 20:02:27.535: D/JSON String(795): <div id="ygma"><a href="http://us.rd.yahoo.com/404/*http://www.yahoo.com"><img
08-02 20:02:27.535: D/JSON String(795): src=http://l.yimg.com/a/i/yahoo.gif
08-02 20:02:27.535: D/JSON String(795): width=147 height=31 border=0 alt="Yahoo!"></a><div><a
08-02 20:02:27.535: D/JSON String(795): href="http://us.rd.yahoo.com/404/*http://www.yahoo.com">Yahoo!</a>
08-02 20:02:27.535: D/JSON String(795): - <a href="http://us.rd.yahoo.com/404/*http://help.yahoo.com">Help</a></div></div>
08-02 20:02:27.535: D/JSON String(795): <div id="bd"><h1>Sorry, the page you requested was not found.</h1>
08-02 20:02:27.535: D/JSON String(795): <p>Please check the URL for proper spelling and capitalization. If
08-02 20:02:27.535: D/JSON String(795): you're having trouble locating a destination on Yahoo!, try visiting the
08-02 20:02:27.535: D/JSON String(795): <strong><a
08-02 20:02:27.535: D/JSON String(795): href="http://us.rd.yahoo.com/404/*http://www.yahoo.com">Yahoo! home
08-02 20:02:27.535: D/JSON String(795): page</a></strong> or look through a list of <strong><a
08-02 20:02:27.535: D/JSON String(795): href="http://us.rd.yahoo.com/404/*http://docs.yahoo.com/docs/family/more/">Yahoo!'s
08-02 20:02:27.535: D/JSON String(795): online services</a></strong>. Also, you may find what you're looking for
08-02 20:02:27.535: D/JSON String(795): if you try searching below.</p>
08-02 20:02:27.535: D/JSON String(795): <form name="s1" action="http://us.rd.yahoo.com/404/*-http://search.yahoo.com/search"><fieldset>
08-02 20:02:27.535: D/JSON String(795): <legend><label for="s1p">Search the Web</label></legend>
08-02 20:02:27.535: D/JSON String(795): <input type="text" size=30 name="p" id="s1p" title="enter search terms here">
08-02 20:02:27.535: D/JSON String(795): <input type="submit" value="Search">
08-02 20:02:27.535: D/JSON String(795): <span><a href="http://us.rd.yahoo.com/404/*http://search.yahoo.com/search/options?p=">advanced search</a> <span class=sep>|</span> <a href="http://us.rd.yahoo.com/404/*http://buzz.yahoo.com">most popular</a></span>
08-02 20:02:27.535: D/JSON String(795): </fieldset></form>
08-02 20:02:27.535: D/JSON String(795): <p class="more">Please try <strong><a
08-02 20:02:27.535: D/JSON String(795): href="http://us.rd.yahoo.com/404/*http://help.yahoo.com">Yahoo!
08-02 20:02:27.535: D/JSON String(795): Help Central</a></strong> if you need more assistance.</p>
08-02 20:02:27.535: D/JSON String(795): </div><div id="ft"><p>Copyright © 2013 Yahoo! Inc.
08-02 20:02:27.535: D/JSON String(795): All rights reserved. <a
08-02 20:02:27.535: D/JSON String(795): href="http://us.rd.yahoo.com/404/*http://privacy.yahoo.com">Privacy
08-02 20:02:27.535: D/JSON String(795): Policy</a> - <a
08-02 20:02:27.535: D/JSON String(795): href="http://us.rd.yahoo.com/404/*http://docs.yahoo.com/info/terms/">Terms
08-02 20:02:27.535: D/JSON String(795): of Service</a></p></div>
08-02 20:02:27.535: D/JSON String(795): </div></body></html>