Question

我正在使用MULE ESB并且有一个流程，旨在将所有结果从Mysql数据库中提取出来并将所有结果放在一个JSON文件中。但是我将结果作为单独的JSON文件获取，而不是一个JSON文件（这是期望的结果）

这是我的配置文件

<context:property-placeholder location="classpath:mysql.properties,classpath:smtp.properties" />
<smtp:connector name="emailConnector" fromAddress="${smtp.from}" subject="${smtp.subject}" doc:name="SMTP" validateConnections="true"/>
<jdbc-ee:connector name="jdbcConnector" dataSource-ref="MySQL_Data_Source" validateConnections="false"  queryTimeout="10" pollingFrequency="10000" doc:name="JDBC"> 
    <jdbc-ee:query key="Users" value="SELECT * FROM test ORDER BY id ASC"></jdbc-ee:query>  
</jdbc-ee:connector>
<jdbc-ee:mysql-data-source name="MySQL_Data_Source" user="${mysql.user}" password="${mysql.password}" url="${mysql.url}" transactionIsolation="UNSPECIFIED" doc:name="MySQL Data Source"></jdbc-ee:mysql-data-source>
<flow name="flows1Flow1" > 
    <jdbc-ee:inbound-endpoint queryKey="Users" connector-ref="jdbcConnector" doc:name="JDBC"></jdbc-ee:inbound-endpoint>
    <json:object-to-json-transformer doc:name="Object to JSON"/>

    <file:outbound-endpoint path="C:\Users\IEUser\Desktop\New folder" doc:name="File" responseTimeout="10000"></file:outbound-endpoint>  
</flow>

Answer 1

你使用的是什么版本的骡子？您使用的jdbc连接器已弃用3.5+。我能够使用3.7.1中的以下配置获得您期望的结果：

     @Override
     protected void onCreate(Bundle savedInstanceState) {
      super.onCreate(savedInstanceState);
      setContentView(R.layout.activity_postlist);
      ListView listView = (ListView) this.findViewById(R.id.postListView);
        PostItemAdapter itemAdapter = new PostItemAdapter(this,
        R.layout.list, listData);
        //this.accessWebService();
        listView.setAdapter(itemAdapter);

     }




     03-15 16:11:12.104: E/AndroidRuntime(844): FATAL EXCEPTION: main
03-15 16:11:12.104: E/AndroidRuntime(844): java.lang.RuntimeException: Unable to start activity ComponentInfo{ie.ucc.bis.is4432calculator/ie.ucc.bis.is4432calculator.secondActivity}: java.lang.NullPointerException
03-15 16:11:12.104: E/AndroidRuntime(844):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1647)
03-15 16:11:12.104: E/AndroidRuntime(844):  at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1663)
03-15 16:11:12.104: E/AndroidRuntime(844):  at android.app.ActivityThread.access$1500(ActivityThread.java:117)
03-15 16:11:12.104: E/AndroidRuntime(844):  at android.app.ActivityThread$H.handleMessage(ActivityThread.java:931)
03-15 16:11:12.104: E/AndroidRuntime(844):  at android.os.Handler.dispatchMessage(Handler.java:99)
03-15 16:11:12.104: E/AndroidRuntime(844):  at android.os.Looper.loop(Looper.java:123)
03-15 16:11:12.104: E/AndroidRuntime(844):  at android.app.ActivityThread.main(ActivityThread.java:3683)
03-15 16:11:12.104: E/AndroidRuntime(844):  at java.lang.reflect.Method.invokeNative(Native Method)
03-15 16:11:12.104: E/AndroidRuntime(844):  at java.lang.reflect.Method.invoke(Method.java:507)
03-15 16:11:12.104: E/AndroidRuntime(844):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839)
03-15 16:11:12.104: E/AndroidRuntime(844):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597)
03-15 16:11:12.104: E/AndroidRuntime(844):  at dalvik.system.NativeStart.main(Native Method)
03-15 16:11:12.104: E/AndroidRuntime(844): Caused by: java.lang.NullPointerException
03-15 16:11:12.104: E/AndroidRuntime(844):  at android.widget.ArrayAdapter.getCount(ArrayAdapter.java:291)
03-15 16:11:12.104: E/AndroidRuntime(844):  at android.widget.ListView.setAdapter(ListView.java:454)
03-15 16:11:12.104: E/AndroidRuntime(844):  at ie.ucc.bis.is4432calculator.secondActivity.onCreate(secondActivity.java:42)
03-15 16:11:12.104: E/AndroidRuntime(844):  at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)

HTH

MULE ESB结果来自数据库作为JSON数组

1 个答案: