异常来自Android的Java和PHP REST API JSON解析 [英] Exception parsing JSON from Android Java and PHP REST API

问题描述

我想送一个JSON是这样的：

I want to send a JSON like this:

{"reverseme" : "Reverse Me!" }

因此​​，我创建这个Java：

So I created this Java:

JSONObject jsonToSend = new JSONObject()
    .put("reverseme", "Reverse ME!")

如果我将其转换为字符串，并将其发送给我的API我没有问题：

If I transform it to String and send it to my api I have no problems:

HttpClient client = new HttpClient();
HttpPost post = new HttpPost("http://192.168.0.10/api");

List<NameValuePair> postData= new ArrayList<NameValuePair>();
postParams.add(new BasicNameValuePair("json", jsonToSend.toString()));

post.setEntity(new UrlEncodedFormEntity(postData));

有它会去我的PHP API是如此简单（我测试一些事情）：

There it will go to my PHP API is as simple as this (i'm testing some things):

<?php 
$JSON = json_decode($_POST['json'], true);

print(
    json_encode( Array(
        'reversed' : strrev($JSON['reverseme'])
    ))
); ?>

最后，Java的code来读取响应是这样的：

Finally, Java Code to read the response is this:

HttpResponse httpresponse = client.execute(post);
String jsonstringresponse = EntityUtils.toString(httpresponse.getEntity()); 
JSONObject jsonresponse = new JSONObject(jsonstringresponse);

这使我这个堆栈跟踪：

It gives me this StackTrace:

org.json.JSONException: A JSONObject text must begin with '{' at character 1 of "{\"reversed\": "!EM esreveR"}"
    at org.json.JSONTokener.syntaxError(JSONTokener.java:448)
    at org.json.JSONObject.<init>(JSONObject.java:178)
    at org.json.JSONObject.<init>(JSONObject.java:246)
 -> at com.example.test.MainActivity.onClick(MainActivity.java:67)
    at java.lang.reflect.Method.invokeNative(Native Method)
    at java.lang.reflect.Method.invoke(Method.java:521)
    at android.view.View$1.onClick(View.java:2026)
...

当然我，因为你可以在堆栈跟踪的最后一行看到我有一些，从阅读的EditText，把JSONresult到一个TextView的Andr​​oid UI。

Of course I, as you can see on StackTrace's last line I have some Android UI that read from a EditText and put JSONresult to a TextView.

的问题是，从服务器说到：

The problem is that from server it comes:

"{\"reversed\": "!EM esreveR"}"

这里有什么问题吗？为什么json_en code转义每个字符？难道是字符集问题，或者一些需要清理的还是什么？

What is the problem here? Why does json_encode escape every character? Is it Charset problem or some need of cleaning or what?

在感谢任何意见。

更新1
在Apache的错误日志，我发现这行：

UPDATE 1 On Apache error log I found this line:

[error] PHP Warning:  json_encode(): Invalid UTF-8 sequence in argument in /var/www/controllers/api.inc.php on line 4.

我也曾想过，这可能是连PHP错误配置？

I have thought that it could be even a PHP misconfiguration?

更新2

json_en code正在接受一家西班牙的字符串，这是该错误的原因是：读Atención给出，因为O

json_encode was receiving a Spanish String, that's the reason of that error: Reading "Atención" gives error because of 'ó'.

我暂时使用stripslashes（）函数和删除第一和最后一个字符，使其工作。

I'm temporally using stripslashes() and deleting first and last character to make it work.

推荐答案

当时服务器配置错误，而且PHP被保存在ISO-8859-1字符集让PHP搞砸3种不同的字符集。

Was a Server configuration fault and that the PHP was saved on ISO-8859-1 charset so PHP messed with 3 different charsets.

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