qq_38004174的博客

int hello = System.identityHashCode("hello");System.out.println(hello);hello = System.identityHashCode("hello");System.out.println(hello);hello = System.identityHashCode(new String("hello"));Syst...

springboot 获取jar包所在目录 /** * 如果已打成jar包，则返回jar包所在目录 * 如果未打成jar，则返回target所在目录 * @return */ public static String getRootPath() throws UnsupportedEncodingException { // ...

import javax.servlet.http.HttpServletRequest;动态获取域名： @RequestMapping("/7") public Object t7(HttpServletRequest request) { String s = request.getRequestURL().toString(); Syste...

Java代码：URL url = this.getClass().getResource("/");System.out.println("URL: " + url.toString());System.out.println("URL: " + url.toString());System.out.println("getFile：" + url.getFile());System.o...