Java调用php检索SQL数据

我希望有人能帮我解决这个问题。我在尝试从java运行一些后端php代码时遇到了一个问题，这些代码提取sql数据并通过gson发送回。我已经将其用作模型，但是，我似乎无法超越返回的HTTP 400响应代码。我已经编辑了以下java控制台以删除标识名称，但是，上下文应该保持不变

security: JSS is not configured
network: Connecting https://secure.justhost.com/<server>/<folder>/<php program name>.php with proxy=DIRECT
network: Cache entry not found [url: http://secure.justhost.com:443/crossdomain.xml, version: null]
network: Connecting http://secure.justhost.com:443/crossdomain.xml with proxy=DIRECT
network: Connecting http://secure.justhost.com:443/ with proxy=DIRECT
java.io.IOException: Server returned HTTP response code: 400 for URL: http://secure.justhost.com:443/crossdomain.xml
    at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown Source)
    at com.sun.deploy.net.CrossDomainXML.check(Unknown Source)
    at com.sun.deploy.net.CrossDomainXML.check(Unknown Source)
    at sun.plugin2.applet.SecurityManagerHelper.checkConnectHelper(Unknown Source)
    at sun.plugin2.applet.AWTAppletSecurityManager.checkConnect(Unknown Source)
    at sun.net.www.http.HttpClient.openServer(Unknown Source)
    at sun.net.www.protocol.https.HttpsClient.<init>(Unknown Source)
    at sun.net.www.protocol.https.HttpsClient.New(Unknown Source)
    at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.getNewHttpClient(Unknown Source)
    at sun.net.www.protocol.http.HttpURLConnection.plainConnect(Unknown Source)
    at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(Unknown Source)
    at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown Source)
    at java.net.HttpURLConnection.getResponseCode(Unknown Source)
    at sun.net.www.protocol.https.HttpsURLConnectionImpl.getResponseCode(Unknown Source)
    at newposting.GetCategories(newposting.java:864)
    at newposting.<init>(newposting.java:170)
    at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
    at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
    at java.lang.reflect.Constructor.newInstance(Unknown Source)
    at java.lang.Class.newInstance(Unknown Source)
    at com.sun.deploy.uitoolkit.impl.awt.AWTAppletAdapter$1.run(Unknown Source)
    at java.awt.event.InvocationEvent.dispatch(Unknown Source)
    at java.awt.EventQueue.dispatchEventImpl(Unknown Source)
    at java.awt.EventQueue.access$200(Unknown Source)
    at java.awt.EventQueue$3.run(Unknown Source)
    at java.awt.EventQueue$3.run(Unknown Source)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.security.ProtectionDomain$1.doIntersectionPrivilege(Unknown Source)
    at java.security.ProtectionDomain$1.doIntersectionPrivilege(Unknown Source)
    at java.awt.EventQueue$4.run(Unknown Source)
    at java.awt.EventQueue$4.run(Unknown Source)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.security.ProtectionDomain$1.doIntersectionPrivilege(Unknown Source)
    at java.awt.EventQueue.dispatchEvent(Unknown Source)
    at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
    at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
    at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
    at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
    at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
    at java.awt.EventDispatchThread.run(Unknown Source)
basic: exception: java.lang.reflect.InvocationTargetException.
java.lang.RuntimeException: java.lang.reflect.InvocationTargetException
    at com.sun.deploy.uitoolkit.impl.awt.AWTAppletAdapter.runOnEDTAndWait(Unknown Source)
    at com.sun.deploy.uitoolkit.impl.awt.AWTAppletAdapter.instantiateApplet(Unknown Source)
    at sun.plugin2.applet.Plugin2Manager.initAppletAdapter(Unknown Source)
    at sun.plugin2.applet.Plugin2Manager$AppletExecutionRunnable.run(Unknown Source)
    at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.reflect.InvocationTargetException
    at com.sun.deploy.uitoolkit.impl.awt.OldPluginAWTUtil.invokeAndWait(Unknown Source)
    ... 5 more
Caused by: java.lang.RuntimeException: java.security.AccessControlException: access denied ("java.net.SocketPermission" "secure.justhost.com:443" "connect,resolve")
    at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown Source)
    at sun.net.www.protocol.http.HttpURLConnection.getHeaderField(Unknown Source)
    at java.net.HttpURLConnection.getResponseCode(Unknown Source)
    at sun.net.www.protocol.https.HttpsURLConnectionImpl.getResponseCode(Unknown Source)
    at newposting.GetCategories(newposting.java:864)
    at newposting.<init>(newposting.java:170)
    at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
    at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
    at java.lang.reflect.Constructor.newInstance(Unknown Source)
    at java.lang.Class.newInstance(Unknown Source)
    at com.sun.deploy.uitoolkit.impl.awt.AWTAppletAdapter$1.run(Unknown Source)
    at java.awt.event.InvocationEvent.dispatch(Unknown Source)
    at java.awt.EventQueue.dispatchEventImpl(Unknown Source)
    at java.awt.EventQueue.access$200(Unknown Source)
    at java.awt.EventQueue$3.run(Unknown Source)
    at java.awt.EventQueue$3.run(Unknown Source)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.security.ProtectionDomain$1.doIntersectionPrivilege(Unknown Source)
    at java.security.ProtectionDomain$1.doIntersectionPrivilege(Unknown Source)
    at java.awt.EventQueue$4.run(Unknown Source)
    at java.awt.EventQueue$4.run(Unknown Source)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.security.ProtectionDomain$1.doIntersectionPrivilege(Unknown Source)
    at java.awt.EventQueue.dispatchEvent(Unknown Source)
    at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
    at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
    at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
    at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
    at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
    at java.awt.EventDispatchThread.run(Unknown Source)
Caused by: java.security.AccessControlException: access denied ("java.net.SocketPermission" "secure.justhost.com:443" "connect,resolve")
    at java.security.AccessControlContext.checkPermission(Unknown Source)
    at java.security.AccessController.checkPermission(Unknown Source)
    at java.lang.SecurityManager.checkPermission(Unknown Source)
    at java.lang.SecurityManager.checkConnect(Unknown Source)
    at sun.plugin2.applet.SecurityManagerHelper.checkConnectHelper(Unknown Source)
    at sun.plugin2.applet.AWTAppletSecurityManager.checkConnect(Unknown Source)
    at sun.net.www.http.HttpClient.openServer(Unknown Source)
    at sun.net.www.protocol.https.HttpsClient.<init>(Unknown Source)
    at sun.net.www.protocol.https.HttpsClient.New(Unknown Source)
    at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.getNewHttpClient(Unknown Source)
    at sun.net.www.protocol.http.HttpURLConnection.plainConnect(Unknown Source)
    at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(Unknown Source)
    at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown Source)
    ... 29 more
security: Reset deny session certificate store

安全性：未配置JSS
网络：连接https://secure.justhost.com///.php 使用proxy=DIRECT
网络：未找到缓存项[url:http://secure.justhost.com:443/crossdomain.xml，版本：null]
网络：连接http://secure.justhost.com:443/crossdomain.xml 使用proxy=DIRECT
网络：连接http://secure.justhost.com:443/ 使用proxy=DIRECT
java.io.IOException:服务器返回了URL:http://secure.justhost.com:443/crossdomain.xml
位于sun.net.www.protocol.http.HttpURLConnection.getInputStream（未知源）
位于com.sun.deploy.net.CrossDomainXML.check（未知源）
位于com.sun.deploy.net.CrossDomainXML.check（未知源）
位于sun.plugin2.applet.SecurityManager.checkConnectHelper（未知源）
位于sun.plugin2.applet.AWTAppletSecurityManager.checkConnect（未知源）
位于sun.net.www.http.HttpClient.openServer（未知来源）
位于sun.net.www.protocol.https.HttpsClient。（未知来源）
位于sun.net.www.protocol.https.HttpsClient.New（未知来源）
位于sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.getNewHttpClient（未知源）
位于sun.net.www.protocol.http.HttpURLConnection.plainConnect（未知源）
位于sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect（未知源）
位于sun.net.www.protocol.http.HttpURLConnection.getInputStream（未知源）
位于java.net.HttpURLConnection.getResponseCode（未知源）
位于sun.net.www.protocol.https.HttpsURLConnectionImpl.getResponseCode（未知源）
位于newposting.GetCategories（newposting.java:864）
在newposting时。（newposting.java:170）
位于sun.reflect.NativeConstructorAccessorImpl.newInstance0（本机方法）
位于sun.reflect.NativeConstructorAccessorImpl.newInstance（未知源）
位于sun.reflect.delegatingConstructor或AccessorImpl.newInstance（未知源）
位于java.lang.reflect.Constructor.newInstance（未知源）
位于java.lang.Class.newInstance（未知源）
位于com.sun.deploy.uitoolkit.impl.awt.AWTAppletAdapter$1.run（未知源）
在java.awt.event.InvocationEvent.dispatch（未知源）处
位于java.awt.EventQueue.dispatchEventImpl（未知源）
位于java.awt.EventQueue.access$200（未知源）
在java.awt.EventQueue$3.run处（未知源）
在java.awt.EventQueue$3.run处（未知源）
位于java.security.AccessController.doPrivileged（本机方法）
位于java.security.ProtectionDomain$1.doIntersectionPrivilege（未知源）
位于java.security.ProtectionDomain$1.doIntersectionPrivilege（未知源）
在java.awt.EventQueue$4.run处（未知源）
在java.awt.EventQueue$4.run处（未知源）
位于java.security.AccessController.doPrivileged（本机方法）
位于java.security.ProtectionDomain$1.doIntersectionPrivilege（未知源）
位于java.awt.EventQueue.dispatchEvent（未知源）
位于java.awt.EventDispatchThread.pumpOneEventForFilters（未知源）
位于java.awt.EventDispatchThread.pumpEventsForFilter（未知源）
位于java.awt.EventDispatchThread.pumpEventsForHierarchy（未知源）
位于java.awt.EventDispatchThread.pumpEvents（未知源）
位于java.awt.EventDispatchThread.pumpEvents（未知源）
位于java.awt.EventDispatchThread.run（未知源）
基本：异常：java.lang.reflect.InvocationTargetException。
java.lang.RuntimeException:java.lang.reflect.InvocationTargetException
位于com.sun.deploy.uitoolkit.impl.awt.AWTAppletAdapter.runOnEDTAndWait（未知源）
在com.sun.deploy.uitoolkit.impl.awt.AWTAppletAdapter.InstanceApplet上（未知源）
位于sun.plugin2.applet.Plugin2Manager.initAppletAdapter（未知源）
位于sun.plugin2.applet.Plugin2Manager$AppletExecutionRunnable.run（未知源）
位于java.lang.Thread.run（未知源）
原因：java.lang.reflect.InvocationTargetException
位于com.sun.deploy.uitoolkit.impl.awt.oldpluginawutil.invokeAndWait（未知源）
... 还有5个
原因：java.lang.RuntimeException:java.security.AccessControlException:access被拒绝（“java.net.SocketPermission”“secure.justhost.com:443”“连接，解析”）
位于sun.net.www.protocol.http.HttpURLConnection.getInputStream（未知源）
位于sun.net.www.protocol.http.HttpURLConnection.getHeaderField（未知源）
位于java.net.HttpURLConnection.getResponseCode（未知源）
位于sun.net.www.protocol.https.HttpsURLConnectionImpl.getResponseCode（未知源）
位于newposting.GetCategories（newposting.java:864）
在newposting时。（newposting.java:170）
位于sun.reflect.NativeConstructorAccessorImpl.newInstance0（本机方法）
位于sun.reflect.NativeConstructorAccessorImpl.newInstance（未知源）
位于sun.reflect.delegatingConstructor或AccessorImpl.newInstance（未知源）
位于java.lang.reflect.Constructor.newInstance（未知源）
位于java.lang.Class.newInstance（未知源）
位于com.sun.deploy.uitoolkit.impl.awt.AWTAppletAdapter$1.run（未知源）
在java.awt.event.InvocationEvent.dispatch（未知源）处
位于java.awt.EventQueue.dispatchEventImpl（未知源）
位于java.awt.EventQueue.access$200（未知源）
在java.awt.EventQueue$3.run处（未知源）
在java.awt.EventQueue$3.run处（未知源）
位于java.security.AccessController.doPrivileged（本机方法）
位于java.security.ProtectionDomain$1.doIntersectionPrivilege（未知源）
位于java.security.ProtectionDomain$1.doIntersectionPrivilege（未知源）
在java.awt.EventQueue$4.run处（未知源）
在java.awt.EventQueue$4.run处（未知源）
在ja
private ArrayList<String> GetCategories ()
    {
    ArrayList<String> cats = new ArrayList<String> ();

    //  preparation
    String charset = "UTF-8";
    String szURL = new String ();
    if (!debugConfiguration)
        szURL = "https://secure.justhost.com/<server>/<folder>/<php program name>.php";
    else
        szURL = "http://localhost/<php program name>.php";
    //  HTTP Post request
    URL object = null;
    try 
        {
        object = new URL(szURL);
        }
    catch (MalformedURLException e) 
        {
        // TODO Auto-generated catch block
        e.printStackTrace();
        }

    HttpsURLConnection con = null;
    try 
        {
        con = (HttpsURLConnection) object.openConnection();
        }
    catch (IOException e)
        {
        // TODO Auto-generated catch block
        e.printStackTrace();
        }

    //add request header
    try 
        {
        con.setRequestMethod("POST");
        }
    catch (ProtocolException e) 
        {
        // TODO Auto-generated catch block
        e.printStackTrace();
        }

    con.setRequestProperty("Content-Type", "application/x-www-form-urlencoded"); 
    con.setRequestProperty(charset, "utf-8");
    con.setRequestProperty("User-Agent", USER_AGENT);
    con.setRequestProperty("Accept-Language", "en-US,en;q=0.5");
    // Send post request
    //con.setDoOutput(true);
    /*
    DataOutputStream wr = null;
    try 
        {
        wr = new DataOutputStream (con.getOutputStream());
        }
    catch (IOException e) 
        {
        // TODO Auto-generated catch block
        e.printStackTrace();
        }
    try 
        {
        wr.close();
        }
    catch (IOException e) 
        {
        // TODO Auto-generated catch block
        e.printStackTrace();
        }
    */
    try 
        {
        int responseCode = con.getResponseCode();
        }
    catch (IOException e) 
        {
        // TODO Auto-generated catch block
        e.printStackTrace();
        }

    BufferedReader in = null;
    try 
        {
        in = new BufferedReader(new InputStreamReader(con.getInputStream()));
        }
    catch (IOException e) 
        {
        // TODO Auto-generated catch block
        e.printStackTrace();
        }

    String inputLine;
    StringBuffer response = new StringBuffer();

    try 
        {
        while ((inputLine = in.readLine()) != null)
            {
            response.append(inputLine);
            }
        }
    catch (IOException e) 
        {
        // TODO Auto-generated catch block
        e.printStackTrace();
        }

    try 
        {
        in.close();
        }
    catch (IOException e) 
        {
        // TODO Auto-generated catch block
        e.printStackTrace();
        }

    Gson gson = new Gson ();    
    jsonArticleCategories[] enums = gson.fromJson(response.toString(), jsonArticleCategories[].class);
    for (int i=0; i<enums.length; ++i)
        {
        jsonArticleCategories jac = enums[i];
        cats.add(jac.get_category());
        }

    return cats;
    }