73 lines
1.8 KiB
Plaintext
73 lines
1.8 KiB
Plaintext
package com.novelbook.android.netapi;
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import java.util.Random;
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import org.json.JSONArray;
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import org.json.JSONException;
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import org.json.JSONObject;
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public class RandomHost {
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private static final int MAX = 5;
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private static final Random random = new Random();
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//private static final Map<String, int[]> indexsMap = new HashMap<String, int[]>();
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private JSONObject hosts = null;
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private String uri = null;
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private int[] indexs = new int[10];
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public RandomHost(JSONObject hosts, String uri) throws JSONException {
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this.hosts = hosts;
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this.uri = uri;
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String hostName = UrlFactory.getHost(uri);
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indexs = new int[MAX];
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JSONArray us = hosts.getJSONArray(hostName);
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int maxFixIndex = us == null ||us.length()==0 ? 0 :us.length();
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if (maxFixIndex > 0) {
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randomFill(indexs, 0, 0, maxFixIndex - 1);
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}
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for (int i = maxFixIndex; i < MAX; i++) {
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indexs[i] = i;
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}
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//randomFill(indexs, maxFixIndex, maxFixIndex, MAX - 1);
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}
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private static boolean in(int[] values, int maxIndex, int value) {
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for (int i = 0; i <= maxIndex; i++) {
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if (values[i] == value) return true;
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}
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return false;
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}
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private static void randomFill(int[] indexs, int fromIndex, int min, int max) {
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for (int i = min; i <= max; i++) {
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while (true) {
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int value = random.nextInt(max + 1);
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if (value < min) continue;
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if (in(indexs, fromIndex + i - min - 1, value)) continue;
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indexs[ fromIndex + i - min] = value;
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break;
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}
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}
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}
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private int currentIndex = 0;
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public String next() {
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if (indexs == null || indexs.length == 0) return "";
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if (currentIndex >= indexs.length) {
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return "";
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}
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else {
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try {
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return UrlFactory.getUrl(hosts, uri, indexs[currentIndex++]);
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} catch (JSONException e) {
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e.printStackTrace();
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}
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}
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return "";
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}
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}
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