54 lines
1.3 KiB
Java
54 lines
1.3 KiB
Java
package com.nis.web.task;
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import java.util.HashMap;
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import java.util.List;
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import java.util.Map;
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import java.util.concurrent.Callable;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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public class IpToLongThread implements Callable<Map<Long, String>> {
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private static Logger logger = LoggerFactory.getLogger(IpToLongThread.class);
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private List<String> list;
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public IpToLongThread(List<String> list) {
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super();
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this.list = list;
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}
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public IpToLongThread() {
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super();
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}
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@Override
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public Map<Long, String> call() throws Exception {
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Map<Long, String> map=new HashMap<>();
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logger.info("线程{}开始执行", Thread.currentThread().getName());
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for (int i = 0; i < list.size(); i++) {
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map.put(ipToLong(list.get(i)), list.get(i));
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}
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logger.info("线程{}执行结束", Thread.currentThread().getName());
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return map;
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}
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public long ipToLong(String ipAddress) {
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long result = 0;
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String[] ipAddressInArray = ipAddress.split("\\.");
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for (int i = 3; i >= 0; i--) {
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long ip = Long.parseLong(ipAddressInArray[3 - i]);
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// left shifting 24,16,8,0 and bitwise OR
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// 1. 192 << 24
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// 1. 168 << 16
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// 1. 1 << 8
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// 1. 2 << 0
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result |= ip << (i * 8);
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}
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return result;
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}
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}
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