qq_17303159的博客

https://mvnrepository.com/

快速建方法public void $FORMAT$(){ $END$}

linux环境下，java应用启停脚本参考(start.sh/stop.sh)stop.sh

@echo offsetLocal EnableDelayedExpansionset CLASSPATH="for /R ./lib %%a in (*.jar) do ( set CLASSPATH=!CLASSPATH!;%%a)set CLASSPATH=!CLASSPATH!"echo !CLASSPATH!

pom.xml<?xml version="1.0" encoding="UTF-8"?><project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.o

-Xloggc:/data/logs/gc/test-service_gc.log //指定GC日志的路径-Xmx1G //设置JVM最大可用内存-Xms1G //设置JVM最小内存, 此值可以设置与-Xmx相同，以避免每次垃圾回收完成后JVM重新分配内存。-XX:G1NewSizePercent=25 //新生代比例下限-XX:G1MaxNewSizePercent=50 //新生代比例上限...

jps 查看当前运行的java进程[root@localhost ~]#jps52952 Application...jps -l 查看当前运行的java进程,显示包名[root@localhost ~]#jps -l52952 com.example.Application...jstack pid 打印某一当前Java进程的堆栈信息[root@localhost ~]#jstack 529522021-01-19 15:36:31Full thread dump .

java自带注解

GitHub - alibaba/fastjson: A fast JSON parser/generator for Java.maven依赖<dependency> <groupId>com.alibaba</groupId> <artifactId>fastjson</artifactId> <version>1.2.76</version></dependency..

<dependency> <groupId>org.apache.commons</groupId> <artifactId>commons-lang3</artifactId> <version>3.8</version></dependency>StringUtils工具类boolean isEmpty = StringUtils.isEmpty(xxxStr);b.

依赖 <!--添加web支持 --> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> <version>2.1.1.RELEASE</version&

依赖 <dependency> <groupId>org.quartz-scheduler</groupId> <artifactId>quartz</artifactId> <version>2.3.0</version> </dependency>job任务package com.exam

配置注入shiroFilter时，这里使用的是ShiroFilterFactoryBean，该类继承了spring的FactoryBean接口，会调用getObject方法创建Filter这里创建的SpringShiroFilter间接继承OncePerRequestFilter，所以所有请求都会经过这个方法登录用户在浏览器中点击登陆按钮达到后端后会先将subject和securityManager绑定到ThreadLocal中到达登陆controller中后..

依赖jar包<dependency> <groupId>commons-io</groupId> <artifactId>commons-io</artifactId> <version>2.8.0</version></dependency>正式代码import org.apache.commons.io.FileUtils;import java.io.*;...

assembly依赖<build> <plugins> <!--执行命令打包 mvn clean assembly:assembly --> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-assem

<?xml version="1.0" encoding="UTF-8"?><Configuration status="info"> <Appenders> <Console name="console" target="SYSTEM_OUT"> <PatternLayout pattern="%d{yyyy-MM-dd HH:mm:ss,SSS} %-5p %c{2}(%F:%L) - %m%n"/.

List<String> demoList = new ArrayList<>();demoList.add("h");demoList.add("e");demoList.add("l");demoList.add("l");demoList.add("o");List<String> newList = demoList.stream() //获取流对象 .sorted() .

jvisualvm程序启动添加jvm参数-Djava.rmi.server.hostname=127.0.0.1 #服务器端ip-Dcom.sun.management.jmxremote.port=8089 #服务器端 jmx开放的端口号-Dcom.sun.management.jmxremote.ssl=false #关闭ssl-Dcom.sun.management.jmxremote.auth...

下面的操作可以将不是很主要的代码折叠起来，idea社区版亲测有效// <editor-fold> //java代码。。。// </editor-fold>参考链接：https://www.cnblogs.com/jiahuafu/p/4384543.html

代码：https://github.com/google/guava文档：https://github.com/google/guava/wikimaven依赖 <dependencies> <dependency> <groupId>com.google.guava</groupId> <artifactId>guava</artifactId>.

依赖 <dependency> <groupId>ch.qos.logback</groupId> <artifactId>logback-classic</artifactId> <version>1.2.3</version> </dependency>配置：<?xml version="1.0" encoding="..

mvn clean install -Dmaven.test.skip=true

实现java.lang.reflect.InvocationHandler通过java.lang.reflect.Proxy创建代理对象参考代码：https://github.com/TarsCloud/TarsJava/blob/master/core/src/main/java/com/qq/tars/client/ObjectProxy.javahttps://github.com/TarsCloud/TarsJava/blob/master/core/src/main/j...

在maven面板中点击下面 "Execute Maven Goal" 图标输入命令： -U idea:idea

Java版本import java.util.HashMap;import java.util.Map;public class Main { public static String KEY="TEST-KEY"; public static void main(String[] args) { Map<String,Filed> map= new HashMap<>(); map.put(KEY,new.