kongkong的专栏

代码// 第一个参数明确有值的情况下，报了异常，导致SrpingBoot启不动String[] str = StringUtils.split("localhost",",");System.out.println(str.length);调试了后，才发现StringUtils的包倒错了，一开始还以为是Spring的bug，查看api才发现有注释有可能返回null源码org.springframework.util.StringUtils/** * Split a {@code Str

clone version:5.3.9git clone -b v5.3.9 https://github.com/spring-projects/spring-framework.git

MetadataReader/** * Simple facade for accessing class metadata, * as read by an ASM {@link org.springframework.asm.ClassReader}. * * @author Juergen Hoeller * @since 2.5 */public interface MetadataReader { /** * Return the resource reference fo

# 加注解 才会启动定时器@EnableScheduling# 通过改变cron，会动态调整执行频率@Componentpublic class ChangeCronTask implements SchedulingConfigurer { protected static Logger logger = LoggerFactory.getLogger(Chang...

PathMatchingResourcePatternResolver 根据包路径得到所有匹配的类路径protected Set<Resource> doFindAllClassPathResources(String path) throws IOException { Set<Resource> result = new LinkedHashSet...

配置默认单个数据库# 使用springboot默认属性 配置单个数据源spring: application: name: jdbcdemo datasource: url: jdbc:mysql://192.168.5.212:8066/TESTDB?useUnicode=true&characterEncoding=UTF-8 drive...

1. 配置AsyncRestTemplate@Beanpublic AsyncRestTemplate asyncRestTemplate() { return new AsyncRestTemplate();}2. 注入AsyncRestTemplate@Autowiredprivate AsyncRestTemplate asyncRestTem...

see org.springframework.util.SocketUtilsprivate enum SocketType { TCP { @Override protected boolean isPortAvailable(int port) { try { ServerSocket serverSocket = ServerS...

application.ymlmy: name: 170 port: 12000 username: root servers: - localhost - www.kq.com map: "[/key1]": value1 "[/key2]": value2 /key3: value3 name: king...

#springboot# server.port 从yml或者properties 读取@Value("${server.port}")# 未配置默认2000@Value("${remote.connectTimeout:2000}")# 未配置 则用默认值@Value("${my.server:localhost}")private String myServer;...

1.添加注解 @EnableScheduling没加这个注解，定时器不会跑的2.写具体的业务，方法上要加@Scheduled@Componentpublic class SendMailScheduled { protected Logger logger = LoggerFactory.getLogger(SendMailScheduled.class...

@Bean(name="jmsTopicTemplate")public JmsTemplate topicJmsTemplate(ConnectionFactory connectionFactory) { PropertyMapper map = PropertyMapper.get(); JmsTemplate template = new JmsTemplate...

public interface HandlerInterceptor { /** * Intercept the execution of a handler. Called after HandlerMapping determined * an appropriate handler object, but before HandlerAdapter invokes the ha

 1. 打开地址https://start.spring.io/  2. 输入相关参数3. 点击Generate Project    

int&nbsp;len&nbsp;=&nbsp;p_id.length;&nbsp;String&nbsp;l_sql&nbsp;=&nbsp;"update&nbsp;email_filter&nbsp;e&nbsp;set&nbsp;e.pri&nbsp;=&nbsp;?&nbsp;where&nbsp;e.id&nbsp;=&nbsp;?&

 @ComponentScan  过滤以com.zyxk.sl开头的包，以ForTest结构的类@ComponentScan(basePackages = {"com.zyxk.sl.forumservice","com.zyxk.sl.ctcomponent"}, excludeFilters={ @ComponentScan.Filte...

         假如现在要把系统中，所有的/115开头的路径，转发到别的服务器去，一种方式就是手工一个一个改，另外就是通过filter或者spring拦截器来处理。         如果Controller写个空方法，否则会报404的 @RequestMapping("/115/*/**") public DtoResult emptyMethodFor115() ...

  releases:   https://github.com/spring-projects/spring-framework/releases git clone https://github.com/spring-projects/spring-framework.gitcd spring-framework#看服务器分支git branch -a#查看本地分支...

1. META-INF/spring.handlershttp\://www.kq.com/schema/my=com.kq.mynamespace.DateNamespaceHandler2.  DateNamespaceHandler public class DateNamespaceHandler extends NamespaceHandlerSupport { ...

springboot 启动报错cgLib 方式实现AOP代理问题当我们需要使用CGLIB来实现AOP的时候，需要配置spring.aop.proxy-target-class=true不然默认使用的是标准Java的实现，就会报错解决方法：在yml文件中加入spring: aop: proxy-target-class: true...

@Aspect@Componentpublic class TimeInterceptor { private final Logger logger = LoggerFactory.getLogger(TimeInterceptor.class);// com.xyz.service..*.*(..) //定义在service包和所有子包里的任意类的...

1. pom文件 org.mybatis mybatis 3.2.1 org.mybatis mybatis-spring 1.1.1 2. spring配置文件