小编Har*_*ran的帖子

我试图从Android工作室运行我的应用程序时遇到以下错误

Execution failed for task ':app:compileDebugJava'. Cannot find System Java Compiler. Ensure that you have installed a JDK (not just a JRE) and configured your JAVA_HOME system variable to point to the according directory.

在网上搜索后,我发现了一些这样的解决方案

export JAVA_HOME=/usr/lib/jvm/jdk1.7.0_45/ 

所以我在android studio dirctory的终端中给出了这个命令但是它没有锻炼它再次显示相同的错误.

假设我的数据库表结构是这样的

id name college address
1  xxx   nnn     xn
2  yyy   nnm     yn
3  zzz   nnz     zn

如果我想根据sql中的名称获取学生详细信息,请选择*from student where name ='xxx',以便在redis数据库中如何实现

更改主机名后gedit没有按预期工作,它始终在我的根"未指定协议"中显示错误

** (gedit:23330): WARNING **: Could not open X display
No protocol specified
Cannot open display: 
Run 'gedit --help' to 

<?xml version="1.0"?>
<!DOCTYPE tsung SYSTEM "/usr/share/tsung/tsung-1.0.dtd">
<tsung loglevel="notice" version="1.0">

  <clients>
     <client host="localhost" use_controller_vm="true"></client>
  </clients>
  <servers>
   <server host="localhost" port="5222" type="tcp"></server>
  </servers>

<load>
    <arrivalphase phase="1" duration="1" unit="minute">
     <users maxnumber="100" interarrival="5" unit="second"></users>
    </arrivalphase>
   </load>
<options>
   <option type="ts_jabber" name="global_number" value="100"></option>
   <option type="ts_jabber" name="userid_max" value="100"></option>
   <option type="ts_jabber" name="domain" value="localhost"></option>
   <option type="ts_jabber" name="username" value="ram"></option>
   <option type="ts_jabber" name="passwd" value="ram123"></option>
  </options>

<sessions> 
<session probability="100" name="jabber-example" type="ts_jabber">

 <request> <jabber type="connect" ack="no_ack"></jabber> </request>
    <thinktime value="2"></thinktime>

 <transaction name="authenticate">
    <request> <jabber type="auth_get" ack="global"></jabber></request>
    <request> <jabber type="auth_set_plain" ack="local"></jabber></request>
</transaction>

    <request>
      <jabber type="presence:initial" ack="no_ack"></jabber></request> …

我想将位图转换为URI转换我正在从该API使用google image search API，我从该URL获取了图像URL，将其转换为位图，然后我希望使用此示例将其从位图转换为URI，但我得到一个空值。

private class GetXMLTask extends AsyncTask<String, Void, Bitmap> {
    @Override
    protected Bitmap doInBackground(String... urls) {
        Bitmap map = null;
        for (String url : urls) {
            map = downloadImage(url);
        }
        return map;
    }

    // Sets the Bitmap returned by doInBackground
    @Override
    protected void onPostExecute(Bitmap result) {

        imagQest.setImageBitmap(result);

        ByteArrayOutputStream bytes = new ByteArrayOutputStream();
        result.compress(Bitmap.CompressFormat.JPEG, 100, bytes);
        String path = Images.Media.insertImage(ctx.getContentResolver(),
                result, "Title", null);
        LivLog.info(this.getClass(), "bit map conversion is" + result
                + path);

    }

    // Creates Bitmap from InputStream and …