# springboot3Stu **Repository Path**: javafdx/springboot3-stu ## Basic Information - **Project Name**: springboot3Stu - **Description**: No description available - **Primary Language**: Unknown - **License**: Not specified - **Default Branch**: master - **Homepage**: None - **GVP Project**: No ## Statistics - **Stars**: 0 - **Forks**: 0 - **Created**: 2024-09-04 - **Last Updated**: 2024-12-16 ## Categories & Tags **Categories**: Uncategorized **Tags**: SpringBoot3 ## README #### IDEA快捷键汇总 1. alt + insert 快捷创建方法 2. ctrl + i 实现接口方法 3. alt+enter 实现接口并创建文件 #### spring脚手架 https://start.spring.io/ https://start.aliyun.com/ 配置项目信息(左边)和所需依赖(右边) 生成,预览,分享 导入到 IDEA **IDEA创建SpringBoot项目** NewModule-->SpringInitializr #### String常用方法 1. ```java // 模板格式参数拼接 return String String.format("姓名是%s,年龄是%d", this.name, this.age); ``` 2. ```java // 不为空就转成大写 return String Optional.ofNullable(email).orElse("no email").toUpperCase(); ``` 3. ```java // 字符串以特定元素分隔 return String StringJoiner joiner = new StringJoiner("-"); String s = joiner.add(id.toString()).add(name).add(qty.toString()).toString(); System.out.println("商品信息 = " + s); ``` 4. ```java // 截取 String str = msg.substring(0, 5); ``` 5. ```java // equals比对 boolean flag = s1.equals(s2); // ==对比 boolean f = s1 == s2; ```