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164 问题

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3 回答

1513 浏览

java - 无法解决 JSONException Android Studio

我不知道我的JSONData出了什么问题，但是我的代码捕获了 JSONException，也许它是无效值......？我带有 json 数据的 url 是：这个网站。我已经在这个网站上使用了Json，它可以工作，但是这个页面没有 Json... 为什么？

这是我的代码：

我的代码停止后String jsonData = response.body().string();进入Log.e(TAG, "Exception caught: ", e);

我想要来自Posts > content的字符串

我该如何解决这个问题？干杯!

日志猫：

2015-04-24T10:23:29.470

0 投票

1 回答

1200 浏览

java - 价值Apache of type java.lang.String cannot be converted to JSONObject</h1> <div id="body"><p>I am sending json from servlet to android application , and the following exception occurs : -</p> <pre><code> org.json.</a> </h3> <div class="s-post-summary--content-excerpt"> </div> <div class="s-post-summary--meta"> <div class="s-post-summary--meta-tags tags js-tags t-cñ t-ûnet t-aspûnet-mvc t-aspûnet-mvc-4 t-actionfilterattribute"> <a href="/tags/java" class="post-tag flex--item mt0 js-tagname-cñ" title="" rel="tag">java</a><a href="/tags/android" class="post-tag flex--item mt0 js-tagname-cñ" title="" rel="tag">android</a><a href="/tags/json" class="post-tag flex--item mt0 js-tagname-cñ" title="" rel="tag">json</a><a href="/tags/servlets" class="post-tag flex--item mt0 js-tagname-cñ" title="" rel="tag">servlets</a><a href="/tags/jsonexception" class="post-tag flex--item mt0 js-tagname-cñ" title="" rel="tag">jsonexception</a> </div> <div class="s-user-card s-user-cardminimal"> <div class="s-user-card--info"> <div class="s-user-card--link d-flex gs4"> </div> </div> <time class="s-user-card--time" style="margin-left:5px;"> <span title="2022-04-18 08:34:11Z" class="relativetime"> 2015-05-08T12:32:05.700</span></time> </div> </div> </div> </div><div id="question-summary-71909431" class="s-post-summary js-post-summary" data-post-id="71909431" data-post-type-id="1"> <div class="s-post-summary--stats js-post-summary-stats"> <div class="s-post-summary--stats-item s-post-summary--stats-itememphasized" title="Score of 0"> <span class="s-post-summary--stats-item-number">0</span> <span class="s-post-summary--stats-item-unit">投票</span> </div> <div class="s-post-summary--stats-item " title="1 answers"> <span class="s-post-summary--stats-item-number">1</span> <span class="s-post-summary--stats-item-unit">回答</span> </div> <div class="s-post-summary--stats-item " title="2980 views"> <span class="s-post-summary--stats-item-number">2980</span> <span class="s-post-summary--stats-item-unit">浏览</span> </div> </div> <div class="s-post-summary--content"> <h3 class="s-post-summary--content-title"> <a href="/questions/30800927" class="s-link">java - 从字符串创建 json 对象时出现 Json 异常</a> </h3> <div class="s-post-summary--content-excerpt"> <p>我正在尝试从 string 创建一个 json 对象。我从服务器获取此字符串，然后将“替换为\”。但我仍然遇到错误。这是我的 json</p> <p>这是我的java代码</p> <p>我传递的 repsonseStr 值是</p> <p>任何人都可以帮忙。错误是</p> <blockquote> <p>org.json.JSONException：1 [字符 2 第 1 行] 处缺少值</p> </blockquote> </div> <div class="s-post-summary--meta"> <div class="s-post-summary--meta-tags tags js-tags t-cñ t-ûnet t-aspûnet-mvc t-aspûnet-mvc-4 t-actionfilterattribute"> <a href="/tags/java" class="post-tag flex--item mt0 js-tagname-cñ" title="" rel="tag">java</a><a href="/tags/json" class="post-tag flex--item mt0 js-tagname-cñ" title="" rel="tag">json</a><a href="/tags/jsonexception" class="post-tag flex--item mt0 js-tagname-cñ" title="" rel="tag">jsonexception</a> </div> <div class="s-user-card s-user-cardminimal"> <div class="s-user-card--info"> <div class="s-user-card--link d-flex gs4"> </div> </div> <time class="s-user-card--time" style="margin-left:5px;"> <span title="2022-04-18 08:34:11Z" class="relativetime"> 2015-06-12T10:33:43.217</span></time> </div> </div> </div> </div><div id="question-summary-71909431" class="s-post-summary js-post-summary" data-post-id="71909431" data-post-type-id="1"> <div class="s-post-summary--stats js-post-summary-stats"> <div class="s-post-summary--stats-item s-post-summary--stats-itememphasized" title="Score of 0"> <span class="s-post-summary--stats-item-number">0</span> <span class="s-post-summary--stats-item-unit">投票</span> </div> <div class="s-post-summary--stats-item " title="1 answers"> <span class="s-post-summary--stats-item-number">1</span> <span class="s-post-summary--stats-item-unit">回答</span> </div> <div class="s-post-summary--stats-item " title="304 views"> <span class="s-post-summary--stats-item-number">304</span> <span class="s-post-summary--stats-item-unit">浏览</span> </div> </div> <div class="s-post-summary--content"> <h3 class="s-post-summary--content-title"> <a href="/questions/31138508" class="s-link">android - 验证 json 但 JSONException 未终止的对象</a> </h3> <div class="s-post-summary--content-excerpt"> <p>我的问题已被多次询问，但我找不到解决问题的方法。</p> <p>我正在尝试解析 API: <a href="http://leminimaliste.info/api/get_posts/?count=10" rel="nofollow">1</a>，这是有效的 JSON</p> <p>为此，我构建了一个函数来解析数据：</p> <p>在 AsyncTask 中，我使用缓冲区恢复 Json 字符串 allPostsJsonStr 并取消转义结果以避免 Unicode 字符。</p> <p>我调用函数来解析结果：</p> <p>在尝试/捕获等...</p> <p>我有一个错误：</p> <blockquote> <p>错误 JSONException 在 {"status":"ok","count":1,"count_total":79,"pages":79,"posts":[{"id":1320,"type" 的字符 510 处未终止对象:"post","slug":"vibram-fivefingers-spyridon-mr-ou-comment-allier-legerete-et-plaisir-du-trail","url":" <a href="http://leminimaliste.info/vibram-fivefingers-spyridon-mr-ou-comment-allier-legerete-et-plaisir-du-trail/" rel="nofollow">http://leminimaliste.info/vibram- Fivefingers-spyridon-mr-ou-comment-allier-legerete-et-plaisir-du-trail/</a> ","status":"publish","title":"Vibram FiveFingers Spyridon MR ou comment allier légèreté et plaisir du Trail" ,"title_plain":"Vibram FiveFingers Spyridon MR ou comment allier légèreté et plaisir du Trail","content":"Je souhaite aujourd'hui vous faire un retour sur mon dernier Trail en date avec mes petites nouvelles, les Spyridon MR de VFF。</p><p></p> </blockquote> <p>我注意到它与出现在 JSONString 的“内容”中的 html 代码相关联，但我不知道如何纠正这个错误。</p> <p>我需要帮助，谢谢</p> </div> <div class="s-post-summary--meta"> <div class="s-post-summary--meta-tags tags js-tags t-cñ t-ûnet t-aspûnet-mvc t-aspûnet-mvc-4 t-actionfilterattribute"> <a href="/tags/android" class="post-tag flex--item mt0 js-tagname-cñ" title="" rel="tag">android</a><a href="/tags/json" class="post-tag flex--item mt0 js-tagname-cñ" title="" rel="tag">json</a><a href="/tags/parsing" class="post-tag flex--item mt0 js-tagname-cñ" title="" rel="tag">parsing</a><a href="/tags/jsonexception" class="post-tag flex--item mt0 js-tagname-cñ" title="" rel="tag">jsonexception</a> </div> <div class="s-user-card s-user-cardminimal"> <div class="s-user-card--info"> <div class="s-user-card--link d-flex gs4"> </div> </div> <time class="s-user-card--time" style="margin-left:5px;"> <span title="2022-04-18 08:34:11Z" class="relativetime"> 2015-06-30T12:35:24.800</span></time> </div> </div> </div> </div><div id="question-summary-71909431" class="s-post-summary js-post-summary" data-post-id="71909431" data-post-type-id="1"> <div class="s-post-summary--stats js-post-summary-stats"> <div class="s-post-summary--stats-item s-post-summary--stats-itememphasized" title="Score of 0"> <span class="s-post-summary--stats-item-number">0</span> <span class="s-post-summary--stats-item-unit">投票</span> </div> <div class="s-post-summary--stats-item " title="2 answers"> <span class="s-post-summary--stats-item-number">2</span> <span class="s-post-summary--stats-item-unit">回答</span> </div> <div class="s-post-summary--stats-item " title="1458 views"> <span class="s-post-summary--stats-item-number">1458</span> <span class="s-post-summary--stats-item-unit">浏览</span> </div> </div> <div class="s-post-summary--content"> <h3 class="s-post-summary--content-title"> <a href="/questions/31525327" class="s-link">java - JSONException 对..Android 应用没有价值</a> </h3> <div class="s-post-summary--content-excerpt"> <p>我知道有很多关于这个特定错误的帖子，但没有一个能解决我的问题，而且我是 Android 开发的新手。由于此错误，我无法在应用程序的 listView 中查看数据。</p> <p>以下是我的代码：</p> <p>我意识到在以下附近发生错误：</p> <p>这是logcat数据：</p> <p>JSON 外观的简要视图：</p> <p>如果有任何建议可以彻底解释和证明为什么会发生此错误，我将不胜感激。非常感谢。</p> </div> <div class="s-post-summary--meta"> <div class="s-post-summary--meta-tags tags js-tags t-cñ t-ûnet t-aspûnet-mvc t-aspûnet-mvc-4 t-actionfilterattribute"> <a href="/tags/java" class="post-tag flex--item mt0 js-tagname-cñ" title="" rel="tag">java</a><a href="/tags/android" class="post-tag flex--item mt0 js-tagname-cñ" title="" rel="tag">android</a><a href="/tags/json" class="post-tag flex--item mt0 js-tagname-cñ" title="" rel="tag">json</a><a href="/tags/parsing" class="post-tag flex--item mt0 js-tagname-cñ" title="" rel="tag">parsing</a><a href="/tags/jsonexception" class="post-tag flex--item mt0 js-tagname-cñ" title="" rel="tag">jsonexception</a> </div> <div class="s-user-card s-user-cardminimal"> <div class="s-user-card--info"> <div class="s-user-card--link d-flex gs4"> </div> </div> <time class="s-user-card--time" style="margin-left:5px;"> <span title="2022-04-18 08:34:11Z" class="relativetime"> 2015-07-20T20:01:31.717</span></time> </div> </div> </div> </div><div id="question-summary-71909431" class="s-post-summary js-post-summary" data-post-id="71909431" data-post-type-id="1"> <div class="s-post-summary--stats js-post-summary-stats"> <div class="s-post-summary--stats-item s-post-summary--stats-itememphasized" title="Score of 0"> <span class="s-post-summary--stats-item-number">0</span> <span class="s-post-summary--stats-item-unit">投票</span> </div> <div class="s-post-summary--stats-item " title="1 answers"> <span class="s-post-summary--stats-item-number">1</span> <span class="s-post-summary--stats-item-unit">回答</span> </div> <div class="s-post-summary--stats-item " title="606 views"> <span class="s-post-summary--stats-item-number">606</span> <span class="s-post-summary--stats-item-unit">浏览</span> </div> </div> <div class="s-post-summary--content"> <h3 class="s-post-summary--content-title"> <a href="/questions/31546662" class="s-link">java - JSONException：没有值（解析 JSON 图像）</a> </h3> <div class="s-post-summary--content-excerpt"> <p>我正在尝试解析 JSON 数据并使该数据在 Android 应用程序的列表视图中可用。</p> <p>我收到以下错误：</p> <p>我的代码：</p> <p>我知道错误发生在以下情况，但我不明白我哪里出错了：</p> <p>JSON数组的简要视图：</p> <p>我很感激任何关于为什么会发生这种情况的见解。谢谢你。</p> <p>（PS：我意识到有很多类似的帖子，我试图应用他们的解决方案但没有运气。）</p> </div> <div class="s-post-summary--meta"> <div class="s-post-summary--meta-tags tags js-tags t-cñ t-ûnet t-aspûnet-mvc t-aspûnet-mvc-4 t-actionfilterattribute"> <a href="/tags/java" class="post-tag flex--item mt0 js-tagname-cñ" title="" rel="tag">java</a><a href="/tags/android" class="post-tag flex--item mt0 js-tagname-cñ" title="" rel="tag">android</a><a href="/tags/json" class="post-tag flex--item mt0 js-tagname-cñ" title="" rel="tag">json</a><a href="/tags/parsing" class="post-tag flex--item mt0 js-tagname-cñ" title="" rel="tag">parsing</a><a href="/tags/jsonexception" class="post-tag flex--item mt0 js-tagname-cñ" title="" rel="tag">jsonexception</a> </div> <div class="s-user-card s-user-cardminimal"> <div class="s-user-card--info"> <div class="s-user-card--link d-flex gs4"> </div> </div> <time class="s-user-card--time" style="margin-left:5px;"> <span title="2022-04-18 08:34:11Z" class="relativetime"> 2015-07-21T18:15:32.460</span></time> </div> </div> </div> </div><div id="question-summary-71909431" class="s-post-summary js-post-summary" data-post-id="71909431" data-post-type-id="1"> <div class="s-post-summary--stats js-post-summary-stats"> <div class="s-post-summary--stats-item s-post-summary--stats-itememphasized" title="Score of 0"> <span class="s-post-summary--stats-item-number">0</span> <span class="s-post-summary--stats-item-unit">投票</span> </div> <div class="s-post-summary--stats-item " title="1 answers"> <span class="s-post-summary--stats-item-number">1</span> <span class="s-post-summary--stats-item-unit">回答</span> </div> <div class="s-post-summary--stats-item " title="6261 views"> <span class="s-post-summary--stats-item-number">6261</span> <span class="s-post-summary--stats-item-unit">浏览</span> </div> </div> <div class="s-post-summary--content"> <h3 class="s-post-summary--content-title"> <a href="/questions/31675294" class="s-link">android - Android Facebook Graph API JSONException'电子邮件没有价值'</a> </h3> <div class="s-post-summary--content-excerpt"> <p>我正在尝试使用<a href="http://www.coders-hub.com/2014/07/how-to-add-facebook-sdk-in-android.html?showComment=1438080895397#c6692710950011005416" rel="nofollow">此</a>链接集成 Facebook android sdk。一切运行完美，除了我在尝试获取<code>email</code>登录用户时收到一个 JSONException。</p> <p>下面是我得到的logcat，</p> <blockquote> <p>07-28 16:22:37.420: W/System.err(15793): org.json.JSONException: 电子邮件没有值 07-28 16:22:37.421: W/System.err(15793): 在 org.json .JSONObject.get(JSONObject.java:354) 07-28 16:22:37.421: W/System.err(15793): 在 org.json.JSONObject.getString(JSONObject.java:510) 07-28 16:22 :37.421: W/System.err(15793): 在 in.airangle.foodapp.activities.TestActivity$1$1.onCompleted(TestActivity.java:83) 07-28 16:22:37.421: W/System.err(15793) : 在 com.facebook.GraphRequest$1.onCompleted(GraphRequest.java:295) 07-28 16:22:37.421: W/System.err(15793): 在 com.facebook.GraphRequest$5.run(GraphRequest.java:1243 ) 07-28 16:22:37.421: W/System.err(15793): 在 android.os.Handler.handleCallback(Handler.java:615) 07-28 16:22:37.421: W/System.err(15793 ): 在 android.os.Handler.dispatchMessage(Handler.java:92) 07-28 16:22:37.422:W/System.err(15793): 在 android.os.Looper.loop(Looper.java:153) 07-28 16:22:37.422: W/System.err(15793): 在 android.app.ActivityThread.main (ActivityThread.java:5000) 07-28 16:22:37.422: W/System.err(15793): 在 java.lang.reflect.Method.invokeNative(Native Method) 07-28 16:22:37.422: W/ System.err(15793): at java.lang.reflect.Method.invoke(Method.java:511) 07-28 16:22:37.422: W/System.err(15793): at com.android.internal.os .ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:821) 07-28 16:22:37.423: W/System.err(15793): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:584) 07-28 16:22:37.423: W/System.err(15793): 在 dalvik.system.NativeStart.main(Native Method)main(ActivityThread.java:5000) 07-28 16:22:37.422: W/System.err(15793): 在 java.lang.reflect.Method.invokeNative(Native Method) 07-28 16:22:37.422: W /System.err(15793): at java.lang.reflect.Method.invoke(Method.java:511) 07-28 16:22:37.422: W/System.err(15793): at com.android.internal。 os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:821) 07-28 16:22:37.423: W/System.err(15793): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:584 ) 07-28 16:22:37.423: W/System.err(15793): 在 dalvik.system.NativeStart.main(Native Method)main(ActivityThread.java:5000) 07-28 16:22:37.422: W/System.err(15793): 在 java.lang.reflect.Method.invokeNative(Native Method) 07-28 16:22:37.422: W /System.err(15793): at java.lang.reflect.Method.invoke(Method.java:511) 07-28 16:22:37.422: W/System.err(15793): at com.android.internal。 os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:821) 07-28 16:22:37.423: W/System.err(15793): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:584 ) 07-28 16:22:37.423: W/System.err(15793): 在 dalvik.system.NativeStart.main(Native Method)android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:821) 07-28 16:22:37.423: W/System.err(15793): at com.android.internal.os.ZygoteInit.main(ZygoteInit .java:584) 07-28 16:22:37.423: W/System.err(15793): 在 dalvik.system.NativeStart.main(Native Method)android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:821) 07-28 16:22:37.423: W/System.err(15793): at com.android.internal.os.ZygoteInit.main(ZygoteInit .java:584) 07-28 16:22:37.423: W/System.err(15793): 在 dalvik.system.NativeStart.main(Native Method)</p> </blockquote> <p>我的理解是，我们应该有办法使用<code>LoginManager</code>and获取用户详细信息<code>GraphRequest</code>。如果有人有任何想法，请帮助我。</p> </div> <div class="s-post-summary--meta"> <div class="s-post-summary--meta-tags tags js-tags t-cñ t-ûnet t-aspûnet-mvc t-aspûnet-mvc-4 t-actionfilterattribute"> <a href="/tags/android" class="post-tag flex--item mt0 js-tagname-cñ" title="" rel="tag">android</a><a href="/tags/facebook" class="post-tag flex--item mt0 js-tagname-cñ" title="" rel="tag">facebook</a><a href="/tags/email" class="post-tag flex--item mt0 js-tagname-cñ" title="" rel="tag">email</a><a href="/tags/jsonexception" class="post-tag flex--item mt0 js-tagname-cñ" title="" rel="tag">jsonexception</a> </div> <div class="s-user-card s-user-cardminimal"> <div class="s-user-card--info"> <div class="s-user-card--link d-flex gs4"> </div> </div> <time class="s-user-card--time" style="margin-left:5px;"> <span title="2022-04-18 08:34:11Z" class="relativetime"> 2015-07-28T11:42:23.380</span></time> </div> </div> </div> </div><div id="question-summary-71909431" class="s-post-summary js-post-summary" data-post-id="71909431" data-post-type-id="1"> <div class="s-post-summary--stats js-post-summary-stats"> <div class="s-post-summary--stats-item s-post-summary--stats-itememphasized" title="Score of 0"> <span class="s-post-summary--stats-item-number">0</span> <span class="s-post-summary--stats-item-unit">投票</span> </div> <div class="s-post-summary--stats-item " title="1 answers"> <span class="s-post-summary--stats-item-number">1</span> <span class="s-post-summary--stats-item-unit">回答</span> </div> <div class="s-post-summary--stats-item " title="1593 views"> <span class="s-post-summary--stats-item-number">1593</span> <span class="s-post-summary--stats-item-unit">浏览</span> </div> </div> <div class="s-post-summary--content"> <h3 class="s-post-summary--content-title"> <a href="/questions/31875491" class="s-link">java - org.json.JSONException: Value <div of="" type="" java.lang.string="" cannot="" be="" converted="" to="" jsonobject="" during="" the="" debugging<="" h1=""> <div id="body"><pre><code>I develope android application ,one of my concept is pass user rating of </a> </h3> <div class="s-post-summary--content-excerpt"> </div> <div class="s-post-summary--meta"> <div class="s-post-summary--meta-tags tags js-tags t-cñ t-ûnet t-aspûnet-mvc t-aspûnet-mvc-4 t-actionfilterattribute"> <a href="/tags/java" class="post-tag flex--item mt0 js-tagname-cñ" title="" rel="tag">java</a><a href="/tags/android" class="post-tag flex--item mt0 js-tagname-cñ" title="" rel="tag">android</a><a href="/tags/json" class="post-tag flex--item mt0 js-tagname-cñ" title="" rel="tag">json</a><a href="/tags/jsonexception" class="post-tag flex--item mt0 js-tagname-cñ" title="" rel="tag">jsonexception</a> </div> <div class="s-user-card s-user-cardminimal"> <div class="s-user-card--info"> <div class="s-user-card--link d-flex gs4"> </div> </div> <time class="s-user-card--time" style="margin-left:5px;"> <span title="2022-04-18 08:34:11Z" class="relativetime"> 2015-08-07T10:25:07.343</span></time> </div> </div> </div> </div><div id="question-summary-71909431" class="s-post-summary js-post-summary" data-post-id="71909431" data-post-type-id="1"> <div class="s-post-summary--stats js-post-summary-stats"> <div class="s-post-summary--stats-item s-post-summary--stats-itememphasized" title="Score of 0"> <span class="s-post-summary--stats-item-number">0</span> <span class="s-post-summary--stats-item-unit">投票</span> </div> <div class="s-post-summary--stats-item " title="1 answers"> <span 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class="s-post-summary--stats-item-unit">回答</span> </div> <div class="s-post-summary--stats-item " title="25283 views"> <span class="s-post-summary--stats-item-number">25283</span> <span class="s-post-summary--stats-item-unit">浏览</span> </div> </div> <div class="s-post-summary--content"> <h3 class="s-post-summary--content-title"> <a href="/questions/32034444" class="s-link">java - 如何添加 jar 文件并使用命令提示符进行编译？（错误：发生 JNI 错误，请检查您的安装）</a> </h3> <div class="s-post-summary--content-excerpt"> <p>我从 github 分叉了一个项目，当我想运行它时会出错。我添加了<code>org.json</code>jar 文件<code>jdk\lib</code>并为其设置了 Path 变量。我编译了代码，但没有错误，但是当我运行它时，出现如下异常：（并且我正在使用命令提示符运行它）</p> <blockquote> <p>... 7 更多</p> </blockquote> </div> <div class="s-post-summary--meta"> <div class="s-post-summary--meta-tags tags js-tags t-cñ t-ûnet t-aspûnet-mvc t-aspûnet-mvc-4 t-actionfilterattribute"> <a href="/tags/java" class="post-tag flex--item mt0 js-tagname-cñ" title="" rel="tag">java</a><a href="/tags/exception" class="post-tag flex--item mt0 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