比较两个版本号大小（工具类）

青旅半醒 2023-10-10 12:02 38阅读 0赞

/**
         * 版本号比较
         *
         * @param v1
         * @param v2
         * @return 0代表相等，1代表左边大，-1代表右边大
         * Utils.compareVersion("1.0.358_20180820090554","1.0.358_20180820090553")=1
         */
        public static int compareVersion(String v1, String v2) {
        
            if (v1.equals(v2)) {
        
                return 0;
            }
            String[] version1Array = v1.split("[._]");
            String[] version2Array = v2.split("[._]");
            int index = 0;
            int minLen = Math.min(version1Array.length, version2Array.length);
            long diff = 0;
            
            while (index < minLen
                    && (diff = Long.parseLong(version1Array[index])
                    - Long.parseLong(version2Array[index])) == 0) {
        
                index++;
            }
            if (diff == 0) {
        
                for (int i = index; i < version1Array.length; i++) {
        
                    if (Long.parseLong(version1Array[i]) > 0) {
        
                        return 1;
                    }
                }
                
                for (int i = index; i < version2Array.length; i++) {
        
                    if (Long.parseLong(version2Array[i]) > 0) {
        
                        return -1;
                    }
                }
                return 0;
            } else {
        
                return diff > 0 ? 1 : -1;
            }
        }
    举例：
    
    Utils.compareVersion("1.0.358_20180820090554","1.0.358_20180820090553")=1
    
    Utils.compareVersion("1.0.360","1.0.358_20180820090553")=1
    
    Utils.compareVersion("1.0.358.2","1.0.358_20180820090553")=-1
    
    Utils.compareVersion("1.0.0.2","1.0.1")=-1