| 提交 | 用户 | 时间 | ||
| e7c126 | 1 | package com.iailab.framework.desensitize.core.slider.handler; |
| H | 2 | |
| 3 | import com.iailab.framework.desensitize.core.base.handler.DesensitizationHandler; | |
| 4 | ||
| 5 | import java.lang.annotation.Annotation; | |
| 6 | ||
| 7 | /** | |
| 8 | * 滑动脱敏处理器抽象类，已实现通用的方法 | |
| 9 | * | |
| 10 | * @author gaibu | |
| 11 | */ | |
| 12 | public abstract class AbstractSliderDesensitizationHandler<T extends Annotation> | |
| 13 | implements DesensitizationHandler<T> { | |
| 14 | ||
| 15 | @Override | |
| 16 | public String desensitize(String origin, T annotation) { | |
| 17 | int prefixKeep = getPrefixKeep(annotation); | |
| 18 | int suffixKeep = getSuffixKeep(annotation); | |
| 19 | String replacer = getReplacer(annotation); | |
| 20 | int length = origin.length(); | |
| 21 | ||
| 22 | // 情况一：原始字符串长度小于等于保留长度，则原始字符串全部替换 | |
| 23 | if (prefixKeep >= length || suffixKeep >= length) { | |
| 24 | return buildReplacerByLength(replacer, length); | |
| 25 | } | |
| 26 | ||
| 27 | // 情况二：原始字符串长度小于等于前后缀保留字符串长度，则原始字符串全部替换 | |
| 28 | if ((prefixKeep + suffixKeep) >= length) { | |
| 29 | return buildReplacerByLength(replacer, length); | |
| 30 | } | |
| 31 | ||
| 32 | // 情况三：原始字符串长度大于前后缀保留字符串长度，则替换中间字符串 | |
| 33 | int interval = length - prefixKeep - suffixKeep; | |
| 34 | return origin.substring(0, prefixKeep) + | |
| 35 | buildReplacerByLength(replacer, interval) + | |
| 36 | origin.substring(prefixKeep + interval); | |
| 37 | } | |
| 38 | ||
| 39 | /** | |
| 40 | * 根据长度循环构建替换符 | |
| 41 | * | |
| 42 | * @param replacer 替换符 | |
| 43 | * @param length 长度 | |
| 44 | * @return 构建后的替换符 | |
| 45 | */ | |
| 46 | private String buildReplacerByLength(String replacer, int length) { | |
| 47 | StringBuilder builder = new StringBuilder(); | |
| 48 | for (int i = 0; i < length; i++) { | |
| 49 | builder.append(replacer); | |
| 50 | } | |
| 51 | return builder.toString(); | |
| 52 | } | |
| 53 | ||
| 54 | /** | |
| 55 | * 前缀保留长度 | |
| 56 | * | |
| 57 | * @param annotation 注解信息 | |
| 58 | * @return 前缀保留长度 | |
| 59 | */ | |
| 60 | abstract Integer getPrefixKeep(T annotation); | |
| 61 | ||
| 62 | /** | |
| 63 | * 后缀保留长度 | |
| 64 | * | |
| 65 | * @param annotation 注解信息 | |
| 66 | * @return 后缀保留长度 | |
| 67 | */ | |
| 68 | abstract Integer getSuffixKeep(T annotation); | |
| 69 | ||
| 70 | /** | |
| 71 | * 替换符 | |
| 72 | * | |
| 73 | * @param annotation 注解信息 | |
| 74 | * @return 替换符 | |
| 75 | */ | |
| 76 | abstract String getReplacer(T annotation); | |
| 77 | ||
| 78 | } | |
