Question

我正在尝试创建一个从我的网站解析代码并将其显示在listActivity上的应用程序。我试过使用几个网站......它们都运行良好。但是后来我的网站显示了这个java.lang.NegativeArraySizeException：-1异常！

package com.example.hamad.jsonparsingverybasic;

import android.content.Context;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;
import android.os.AsyncTask;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.widget.TextView;

import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.Reader;
import java.net.HttpURLConnection;
import java.net.URL;

public class MainActivity extends AppCompatActivity {

    public static final String TAG = "log";
    TextView network;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        network = (TextView) findViewById(R.id.networkStatus);

        if (isNetworkAvailable()) {
            GetBlogPosts getBlogPosts = new GetBlogPosts();
            getBlogPosts.execute();
            network.setText("Network: Available!");
        } else {
            network.setText("Network: Not available!");
        }
    }

    private boolean isNetworkAvailable() {
        ConnectivityManager manager = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);
        NetworkInfo networkInfo = manager.getActiveNetworkInfo();
        boolean netWorkAvailable = false;
        if (networkInfo != null && networkInfo.isConnected()) {
            netWorkAvailable = true;
        }
        return netWorkAvailable;
    }

    private class GetBlogPosts extends AsyncTask<Object, Void, String> {
        int responseCode = 0;

        @Override
        protected String doInBackground(Object[] params) {
            try {
                URL blogURL = new URL("http://trapedzone.com/api/info/");
                HttpURLConnection connection = (HttpURLConnection) blogURL.openConnection();
                connection.connect();

                responseCode = connection.getResponseCode();
                if (responseCode == HttpURLConnection.HTTP_OK) {
                    try {
                        InputStream inputStream = connection.getInputStream();
                        Reader reader = new InputStreamReader(inputStream);
                        int contentLength = connection.getContentLength();
                        char[] charArray = new char[contentLength];
                        reader.read(charArray);
                        String responseData = new String(charArray);
                        Log.v(TAG, responseData);
                    } catch (Exception e) {
                    }
                } else {
                    Log.e(TAG, "Bad response code: " + responseCode);
                }
            } catch (Exception e) {
                Log.e(TAG, "Error: " + e);
            }
            return "Code: " + responseCode;
        }
    }
}

执行时，它会在我的网站http://trapedzone.com上抛出java.lang.NegativeArraySizeException：-1异常，但在我在其他网站http://trapedhost.com上使用它时效果很好请帮忙。我的网站是否存在问题，或者我可以在java代码中修复这些问题。

Answer 1

如果您发布了堆栈跟踪，这将有所帮助。

但是，您发布的代码中只有一行可能会生成该错误： char [] charArray = new char [contentLength];

所以，我猜想connection.getCOntentLength（）返回-1。

我在我的博客上得到了java.lang.NegativeArraySizeException：-1

1 个答案: