whitek387的博客

我们在java开发时，使用Thumbnails工具类能帮助我们对图片进行很好的处理，Thumbnails对图片的操作进行了很好的封装，往往很复杂的步骤能用一行代码就完成。Thumbnails支持：指定大小进行缩放 按照比例进行缩放 不按照比例，指定大小进行缩放 旋转 水印 裁剪 转化图像格式 输出到OutputStream 输出到BufferedImage1、导入mvn包<dependency> <groupId>net.coobird</

SpringBoot可以直接导入依赖，通过注解方式实现话不多说~淦淦淦！！！！！！<dependency> <groupId>com.fasterxml.jackson.dataformat</groupId> <artifactId>jackson-dataformat-xml</artifactId></dependency>在方法上加上注解 @RequestMapping(value="/test"

SpringBoot中在包含有大量的注解，针对跨域问题，也提供了对应的注解@CrossOrigin@CrossOrigin源码参考：@Target({ ElementType.METHOD, ElementType.TYPE })@Retention(RetentionPolicy.RUNTIME)@Documentedpublic @interface CrossOrigin { String[] DEFAULT_ORIGINS = { "*" }; String[] DEF

java.lang.IllegalStateException: Failed to load ApplicationContext at org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate.loadContext(DefaultCacheAwareContextLoaderDelegate.java:132) at org.springframework.test.context.support.

```java@RestControllerpublic class indexController { @Value("${com.neuedu.name}") private String name; @Autowired private PayConfig payConfig; @GetMapping("/index") public User index(){ User user = new User(); .

报错：org.springframework.beans.factory.BeanCreationException: Errorcreating bean with name ‘indexController’: Injection of autowireddependencies failed; nested exception isjava.lang.IllegalArgumentException: Could not resolve placeholder‘com.neuedu.name.