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issue #66 对去重逻辑做了一些调整

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This commit is contained in:
Daniel Qian
2015-01-22 14:06:15 +08:00
parent 3ff9d260f2
commit 3216cb54dd
5 changed files with 55 additions and 13 deletions
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15
weixin-java-common/src/main/java/me/chanjar/weixin/common/util/WxMessageDuplicateChecker.java
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@@ -9,10 +9,19 @@ package me.chanjar.weixin.common.util;
public interface WxMessageDuplicateChecker {
/**
* 检查消息ID是否重复
* @param wxMsgId
* <h2>公众号的排重方式</h2>
*
* <p>普通消息：关于重试的消息排重，推荐使用msgid排重。<a href="http://mp.weixin.qq.com/wiki/10/79502792eef98d6e0c6e1739da387346.html">文档参考</a>。</p>
* <p>事件消息：关于重试的消息排重，推荐使用FromUserName + CreateTime 排重。<a href="http://mp.weixin.qq.com/wiki/2/5baf56ce4947d35003b86a9805634b1e.html">文档参考</a></p>
*
* <h2>企业号的排重方式</h2>
*
* 官方文档完全没有写，参照公众号的方式排重。
*
* <p>或者可以采取更简单的方式，如果有MsgId就用MsgId排重，如果没有就用FromUserName+CreateTime排重</p>
* @param messageId messageId需要根据上面讲的方式构造
* @return 如果是重复消息，返回true，否则返回false
*/
public boolean isDuplicate(Long wxMsgId);
public boolean isDuplicate(String messageId);
}

10
weixin-java-common/src/main/java/me/chanjar/weixin/common/util/WxMessageInMemoryDuplicateChecker.java
View File

@@ -25,7 +25,7 @@ public class WxMessageInMemoryDuplicateChecker implements WxMessageDuplicateChec
/**
* 消息id->消息时间戳的map
*/
private final ConcurrentHashMap<Long, Long> msgId2Timestamp = new ConcurrentHashMap<Long, Long>();
private final ConcurrentHashMap<String, Long> msgId2Timestamp = new ConcurrentHashMap<String, Long>();
/**
* 后台清理线程是否已经开启
@@ -65,7 +65,7 @@ public class WxMessageInMemoryDuplicateChecker implements WxMessageDuplicateChec
while (true) {
Thread.sleep(clearPeriod);
Long now = System.currentTimeMillis();
for (Map.Entry<Long, Long> entry : msgId2Timestamp.entrySet()) {
for (Map.Entry<String, Long> entry : msgId2Timestamp.entrySet()) {
if (now - entry.getValue() > timeToLive) {
msgId2Timestamp.entrySet().remove(entry);
}
@@ -81,12 +81,12 @@ public class WxMessageInMemoryDuplicateChecker implements WxMessageDuplicateChec
}
@Override
public boolean isDuplicate(Long wxMsgId) {
if (wxMsgId == null) {
public boolean isDuplicate(String messageId) {
if (messageId == null) {
return false;
}
checkBackgroundProcessStarted();
Long timestamp = msgId2Timestamp.putIfAbsent(wxMsgId, System.currentTimeMillis());
Long timestamp = msgId2Timestamp.putIfAbsent(messageId, System.currentTimeMillis());
if (timestamp == null) {
// 第一次接收到这个消息
return false;

6
weixin-java-common/src/test/java/me/chanjar/weixin/common/util/WxMessageInMemoryDuplicateCheckerTest.java
View File

@@ -12,21 +12,21 @@ public class WxMessageInMemoryDuplicateCheckerTest {
// 第一次检查
for (Long msgId : msgIds) {
boolean result = checker.isDuplicate(msgId);
boolean result = checker.isDuplicate(String.valueOf(msgId));
Assert.assertFalse(result);
}
// 过1秒再检查
Thread.sleep(1000l);
for (Long msgId : msgIds) {
boolean result = checker.isDuplicate(msgId);
boolean result = checker.isDuplicate(String.valueOf(msgId));
Assert.assertTrue(result);
}
// 过1.5秒再检查
Thread.sleep(1500l);
for (Long msgId : msgIds) {
boolean result = checker.isDuplicate(msgId);
boolean result = checker.isDuplicate(String.valueOf(msgId));
Assert.assertFalse(result);
}