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Java unique code generation

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Release： 2016-11-10 10:25:37
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private static String beforeBh;
 private static String beforeNum;
public static String codeGenerate() {
   Date now = new Date();
   String behind = now.getTime()+"";
   if(beforeBh==null) {
    beforeBh = behind;
   } else if(beforeBh.equals(behind)) {
    behind = behind +beforeNum;
    beforeNum++;
   } else {
    beforeBh = behind;
    beforeNum = 0;
   }
   return behind;
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代码片段，代码分享，PHP代码分享，Java代码分享 Ruby代码分享，Python代码分享，HTML代码分享，CSS代
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