From 5d7b65670282a4fad015e37d567cfa171b162052 Mon Sep 17 00:00:00 2001
From: huliguo <2023611923@qq.com>
Date: 星期二, 20 五月 2025 12:25:19 +0800
Subject: [PATCH] 基础代码
---
pt-common/src/main/java/com/ruoyi/common/core/text/StrFormatter.java | 92 ++++++++++++++++++++++++++++++++++++++++++++++
1 files changed, 92 insertions(+), 0 deletions(-)
diff --git a/pt-common/src/main/java/com/ruoyi/common/core/text/StrFormatter.java b/pt-common/src/main/java/com/ruoyi/common/core/text/StrFormatter.java
new file mode 100644
index 0000000..c78ac77
--- /dev/null
+++ b/pt-common/src/main/java/com/ruoyi/common/core/text/StrFormatter.java
@@ -0,0 +1,92 @@
+package com.ruoyi.common.core.text;
+
+import com.ruoyi.common.utils.StringUtils;
+
+/**
+ * 字符串格式化
+ *
+ * @author ruoyi
+ */
+public class StrFormatter
+{
+ public static final String EMPTY_JSON = "{}";
+ public static final char C_BACKSLASH = '\\';
+ public static final char C_DELIM_START = '{';
+ public static final char C_DELIM_END = '}';
+
+ /**
+ * 格式化字符串<br>
+ * 此方法只是简单将占位符 {} 按照顺序替换为参数<br>
+ * 如果想输出 {} 使用 \\转义 { 即可，如果想输出 {} 之前的 \ 使用双转义符 \\\\ 即可<br>
+ * 例：<br>
+ * 通常使用：format("this is {} for {}", "a", "b") -> this is a for b<br>
+ * 转义{}： format("this is \\{} for {}", "a", "b") -> this is \{} for a<br>
+ * 转义\： format("this is \\\\{} for {}", "a", "b") -> this is \a for b<br>
+ *
+ * @param strPattern 字符串模板
+ * @param argArray 参数列表
+ * @return 结果
+ */
+ public static String format(final String strPattern, final Object... argArray)
+ {
+ if (StringUtils.isEmpty(strPattern) || StringUtils.isEmpty(argArray))
+ {
+ return strPattern;
+ }
+ final int strPatternLength = strPattern.length();
+
+ // 初始化定义好的长度以获得更好的性能
+ StringBuilder sbuf = new StringBuilder(strPatternLength + 50);
+
+ int handledPosition = 0;
+ int delimIndex;// 占位符所在位置
+ for (int argIndex = 0; argIndex < argArray.length; argIndex++)
+ {
+ delimIndex = strPattern.indexOf(EMPTY_JSON, handledPosition);
+ if (delimIndex == -1)
+ {
+ if (handledPosition == 0)
+ {
+ return strPattern;
+ }
+ else
+ { // 字符串模板剩余部分不再包含占位符，加入剩余部分后返回结果
+ sbuf.append(strPattern, handledPosition, strPatternLength);
+ return sbuf.toString();
+ }
+ }
+ else
+ {
+ if (delimIndex > 0 && strPattern.charAt(delimIndex - 1) == C_BACKSLASH)
+ {
+ if (delimIndex > 1 && strPattern.charAt(delimIndex - 2) == C_BACKSLASH)
+ {
+ // 转义符之前还有一个转义符，占位符依旧有效
+ sbuf.append(strPattern, handledPosition, delimIndex - 1);
+ sbuf.append(Convert.utf8Str(argArray[argIndex]));
+ handledPosition = delimIndex + 2;
+ }
+ else
+ {
+ // 占位符被转义
+ argIndex--;
+ sbuf.append(strPattern, handledPosition, delimIndex - 1);
+ sbuf.append(C_DELIM_START);
+ handledPosition = delimIndex + 1;
+ }
+ }
+ else
+ {
+ // 正常占位符
+ sbuf.append(strPattern, handledPosition, delimIndex);
+ sbuf.append(Convert.utf8Str(argArray[argIndex]));
+ handledPosition = delimIndex + 2;
+ }
+ }
+ }
+ // 加入最后一个占位符后所有的字符
+ sbuf.append(strPattern, handledPosition, strPattern.length());
+
+ return sbuf.toString();
+ }
+}
--
Gitblit v1.7.1